Partner with a Heat Pump OEM Factory in China

Are you looking to invest in a business but unsure which sector to enter? One option worth considering is partnering with a trusted heat pump OEM factory. There are many benefits to this route, especially if the factory produces heat pumps with DC Inverter technology.

The heat pump business is profitable right now, largely because temperatures in many places have become extreme due to climate change. Winters in some regions are bitterly cold, while summers are intensely hot. As a result, people all over the world are looking at the benefits of heat pumps and installing them in their homes. Many are standard heating and air conditioning users who feel the burden of high monthly electricity bills, particularly when extreme temperatures last for months at a time. According to the International Energy Agency (IEA), global heat pump sales have grown rapidly as households seek more efficient heating and cooling.

So why partner with a heat pump OEM factory? What exactly is an OEM? What is the DC Inverter found in modern heat pump products, and what specifications are actually available for wholesale supply? This guide covers all of it, along with the OEM capabilities a serious factory should offer.

What a Heat Pump OEM Factory Means

You have probably heard the term OEM, or Original Equipment Manufacturer. This term refers to a manufacturer that provides goods and labor to bring a product to market. An OEM also produces components used to assemble a finished product, as in the case of a heat pump OEM factory.

These manufacturers typically offer an OEM service where buyers can order products from the factory under the buyer’s own brand label, which they then resell. Many new business owners want to launch products but are constrained by the lack of a production location, or they do not have the resources to run their own factory operations. OEM solves this problem.

You can contact a company that provides OEM manufacturing services through its website. Do not hesitate to apply for cooperation with companies that already have products on the market and regularly offer OEM services.

Companies of this type are usually well established and have their own product development teams. These internal teams handle product design, product testing, and professional marketing over a relatively long and refined process. You can trust these companies because they typically have original ideas, innovative in-house designs, and proven production processes ready to execute. You just need to confirm that the heat pump OEM factory has been carrying out manufacturing for a long time, developing technological innovations that have helped many partners succeed.

Air Source and Air-to-Water: Getting the Terminology Right

Before discussing specifications, it is worth clarifying terminology, because buyers frequently encounter several names for what is broadly the same category and the distinctions matter when specifying.

An air source heat pump extracts heat from outdoor air rather than from the ground or a body of water. This is the most widely installed type worldwide because it requires no excavation, no borehole, and no access to a water source, which makes it the practical choice for the majority of buildings.

An air-to-water heat pump describes where the heat goes. It takes heat from outdoor air and transfers it into water, which then circulates through underfloor heating loops, radiators, or a domestic hot water cylinder. This is distinct from an air-to-air unit, which blows conditioned air directly into the room like a split air conditioner.

The distinction is practically important for a distributor. If your market installs hydronic heating, meaning water-based underfloor heating or radiators, you need air-to-water units. If your market installs ducted or split air systems, you need air-to-air. The two are not interchangeable, and confirming which your customers actually install is the first specification decision.

Legom manufactures air source, air-to-water heat pumps. They draw heat from outdoor air and deliver hot or chilled water to a hydronic system, which is why they pair naturally with underfloor heating, radiators, and hot water cylinders.

What Is DC Inverter Technology in a Heat Pump?

The DC Inverter is one of the most important features to look for when choosing a heat pump OEM factory, and it is worth understanding why. A conventional fixed-speed heat pump compressor runs at full power or switches off entirely, cycling on and off to maintain temperature. A DC Inverter compressor, by contrast, adjusts its speed continuously, ramping up or down to match the actual heating or cooling demand at any given moment.

This brings several practical advantages. A DC Inverter heat pump, paired with a DC brushless fan motor, can achieve stepless capacity adjustment. By matching output to real demand rather than running at full power unnecessarily, the system significantly reduces the energy consumption of both the compressor and the fan.

For the end customer, this means lower electricity bills, quieter operation, more stable temperatures, and longer equipment life. The reason equipment life improves is worth spelling out: every start-up cycle places mechanical and electrical stress on a compressor, so a unit that modulates instead of starting and stopping repeatedly simply accumulates less wear over the same number of operating hours.

For a business owner, offering DC Inverter heat pumps means selling a product that genuinely outperforms cheaper fixed-speed alternatives, which is a meaningful competitive advantage. Every Legom heat pump uses a high-efficiency full DC inverter compressor across the entire capacity range.

Efficiency: Understanding COP and What Drives It

Efficiency is the reason heat pumps exist commercially, and it is measured as the Coefficient of Performance, or COP. This is simply the ratio of heat output to electricity input. A COP of 4 means the unit delivers four units of heat for every unit of electricity it consumes.

That figure looks impossible until you understand the mechanism. A heat pump does not generate heat; it moves heat that already exists in the outdoor air into the building. Because it is transporting energy rather than creating it, it is not bound by the ceiling that limits combustion or electric resistance heating, where a maximum of one unit of heat per unit of fuel or electricity applies. Legom heat pumps reach a COP of 4 or more under favourable conditions.

Three factors determine what COP you actually achieve in service, and a distributor who understands them can advise customers accurately rather than quoting a headline number.

Flow temperature. The lower the water temperature the heat pump must produce, the higher its COP. A unit supplying 35°C water to an underfloor system operates far more efficiently than the same unit supplying 55°C to radiators. This single factor has more influence than any other, and it is why underfloor heating and heat pumps are so consistently specified together.

Outdoor temperature. As ambient air gets colder, there is less heat available to extract, so COP declines. This is unavoidable physics rather than a product weakness, and it applies to every air source heat pump regardless of manufacturer.

Building heat loss. A poorly insulated building demands higher flow temperatures to stay warm, which pushes the heat pump into its less efficient operating range. This is why insulation improvements so often accompany heat pump installations, and why an honest supplier raises the subject rather than promising savings the building cannot deliver.

Why R32 Refrigerant Matters

Every Legom heat pump runs on R32 refrigerant, which has a Global Warming Potential of 675. For comparison, the older R410A that R32 replaces has a GWP several times higher, which is why regulatory phase-downs across many markets are pushing the industry toward lower-GWP alternatives.

The commercial implication for a distributor is worth understanding. Under the European F-Gas Regulation and equivalent rules elsewhere, high-GWP refrigerants face progressive restriction, which means equipment charged with them becomes harder and more expensive to service over time. Sourcing R32 equipment today avoids selling your customers into a servicing problem several years out.

R32 also brings a technical benefit beyond compliance. It has strong heat absorption characteristics during evaporation, which supports a higher coefficient of performance, and it requires a smaller refrigerant charge for the same output than R410A. Less refrigerant in the circuit means a lower total environmental impact even before accounting for the difference in GWP.

Cold-Climate Performance Down to -35°C

Legom heat pumps are engineered to keep operating in ambient temperatures as low as -35°C, which is well beyond the range where many standard units lose usable output.

This capability is what makes the range viable in cold-climate markets. Legom exports heat pumps to distribution partners in Poland, Russia, and Australia, covering conditions from Central European winters through to Australian hot water applications. For a distributor operating in a cold market, the -35°C rating is often the specification that determines whether a heat pump can serve as the primary heat source at all rather than requiring a supplementary system.

One honest qualification belongs here. Performance does decline as ambient temperature falls, which is normal for any air source heat pump. A unit rated to -35°C continues working at that temperature but delivers less output than at 7°C, so cold-climate projects should be sized against the local design temperature rather than the nominal rating. A supplier who explains this is giving you the information you need to specify correctly.

The Heat Pump Range Available for Wholesale Supply

Legom manufactures air source heat pumps in four capacities, covering small residential through to light commercial applications. Every unit shares the same core platform: R32 refrigerant, full DC inverter compressor, reversible heating and cooling, operation to -35°C, and CE and RoHS certification.

5kW Heat Pump

The entry point in the range, sized for small to medium houses with two to three bedrooms. It shares the compact residential platform with the 6kW and 9kW models.

6kW Heat Pump

A step up for medium homes with moderate heat demand, on the same platform as the 5kW unit.

9kW Heat Pump

The largest of the residential platform units, suited to medium and larger homes, and to older properties where heat loss is higher.

Parameter	5kW / 6kW / 9kW
Heat source type	Air source, air-to-water
Heating capacity	5 kW / 6 kW / 9 kW
Functions	Heating and cooling, reversible
Refrigerant	R32 (GWP 675)
Compressor	High-efficiency full DC inverter
Minimum ambient operating temperature	Down to -35°C
Coefficient of Performance	Up to 4 or more
Power supply	Single phase, 220 to 240V, 50Hz
Certification	CE, RoHS
Recommended application	Residential heating and cooling

16kW Heat Pump

The high-capacity model, built for large homes and light commercial buildings where heat demand is higher. It uses the same R32 and full DC inverter platform, scaled up for larger loads while retaining low-temperature operation.

Parameter	16kW
Heat source type	Air source, air-to-water
Heating capacity	16 kW
Functions	Heating and cooling, reversible
Refrigerant	R32 (GWP 675)
Compressor	High-efficiency full DC inverter
Minimum ambient operating temperature	Down to -35°C
Coefficient of Performance	Up to 4 or more
Power supply	Single or three phase, confirm with the technical team
Certification	CE, RoHS
Recommended application	Large homes and light commercial heating and cooling

Range Comparison

Model	Capacity	Power Supply	Best For
5kW	5 kW	Single phase	Small to medium homes, 2 to 3 bedrooms
6kW	6 kW	Single phase	Medium homes, moderate heat demand
9kW	9 kW	Single phase	Medium to large homes
16kW	16 kW	Single or three phase	Large homes, light commercial buildings

A Note on Industrial Scale

It is worth being direct about where this range stops. The 16kW unit covers large residences and light commercial buildings such as offices, shops, and small commercial spaces, either as a single unit or several units in parallel. It is not an industrial-scale product, and buyers requiring heavy industrial process heating or very large district applications need equipment in a different capacity class entirely.

Saying so saves everyone time. A distributor whose market is light commercial and residential is well served here. One sourcing for industrial process heat should look elsewhere, and would rather know that in the first conversation than after a specification exercise.

How to Size a Heat Pump Correctly

Capacity selection is the specification decision that most affects customer satisfaction, and it depends on the building’s heat load rather than its floor area alone.

Both errors carry consequences. An undersized unit runs continuously and still fails to reach temperature on the coldest days, which produces complaints and returns. An oversized unit cycles inefficiently, wearing the compressor faster while delivering worse comfort, because it reaches the set point quickly then shuts down rather than modulating steadily.

The factors that determine load are insulation standard, window area and glazing quality, climate and local design temperature, ceiling height, occupancy, and whether the unit also supplies domestic hot water. A qualified installer performs a heat loss calculation, and for a distributor it is worth insisting on that calculation before confirming an order rather than sizing from floor area.

Applications Available for Wholesale Supply

Underfloor Heating Systems

This is the primary application and the most efficient pairing. The heat pump supplies low-temperature water to a manifold-based floor loop, and because underfloor heating performs comfortably at the 30 to 45°C flow temperatures where a heat pump is most efficient, the two technologies reinforce each other rather than compromising.

For a distributor, this pairing carries a commercial advantage worth noting: selling the heat pump alongside the manifold, floor heating pipe, thermal actuators, and room thermostats turns a single-product sale into a complete system supply, at a higher order value and with the compatibility question already answered.

Residential Heating and Cooling

A single reversible unit covers winter heating and summer cooling, with the 5kW to 9kW models sized for small to large homes and the 16kW model for the largest residences. In markets with both a real winter and a hot summer, this dual function is often the deciding argument against buying separate heating and cooling equipment.

Radiator Central Heating

The heat pump can replace a gas or oil boiler in an existing radiator system, feeding hot water to existing or low-temperature radiators. One technical caveat matters in this application: radiators sized for 70 to 80°C boiler water will demand high flow temperatures from the heat pump, which reduces COP significantly. Oversizing the radiators so they perform at lower temperatures preserves the efficiency benefit, and this should be assessed before a conversion rather than discovered afterwards.

Domestic Hot Water

Paired with a hot water cylinder, the heat pump produces domestic hot water efficiently, covering both space heating and hot water from a single system. In some markets, hot water alone is the primary driver for heat pump adoption because it replaces expensive electric immersion heating.

Light Commercial Buildings

The 16kW model suits offices, shops, and small commercial premises where a single high-capacity unit, or several units operating together, can cover the load. Commercial applications typically require more attention to power supply, since three-phase availability affects configuration, and to noise limits where the outdoor unit sits near neighbouring properties.

Cold-Climate and Retrofit Projects

With operation down to -35°C, the range suits cold-climate regions and renovation projects switching from fossil-fuel heating to an efficient electric heat source. Retrofit projects deserve particular attention to the existing emitters and insulation, since both determine the flow temperature the heat pump will need to produce.

Controls, Configuration, and Connectivity

Control is where a heat pump becomes a system rather than a box, and it is an area where OEM customization is genuinely available.

At the unit level, the controller, display, and operating parameters can be adapted to your control scheme and connectivity requirements as part of an OEM project. This means a distributor with an established control philosophy, or one supplying into a market with particular expectations, is not locked into a single default configuration.

At the system level, control of a hydronic installation is handled by room thermostats and a base station. This is where smart and app-based control typically sits in practice, since the thermostat is what the occupant interacts with daily. The Legom thermostat range includes models with WiFi status indication and integration into a centralized base station that coordinates zone demand and heat source activation, so a complete installation can offer connected control without every function being duplicated inside the outdoor unit.

For buyers whose specification includes app control or building management integration, the practical approach is to raise it during the specification conversation so the controller configuration and thermostat selection are decided together rather than separately.

How a Heat Pump OEM Factory Works

The market for heat pumps is wide. When starting an eco-friendly HVAC business, you will find many paths to grow. Heat pumps are not only low-emission equipment for home HVAC systems; they are also efficient for larger applications such as offices, commercial buildings, and more.

When you look for a heat pump OEM factory, you will find information about how the company operates. OEM companies with good management structures and high-quality products have a clear and organized way of working. Here is a simple example of how the OEM heat pump manufacturing process works in practice.

Imagine you run an HVAC company that has designed a new line of air-source heat pumps. Your company already has its own design, market research, product testing, and branding. However, you need a thermostat and HVAC valves for each heat pump set, and you do not manufacture these yourself.

A supplier offering OEM services, in this case a heat pump OEM factory, contacts your company about its service. You investigate who they are and discover they have long experience in the heat pump business and the capacity to mass-produce the thermostats and HVAC valves you need. In this arrangement, your company provides the design, branding, manufacturing requirements, packaging requirements, and logo design. If both sides agree, you enter into a cooperation agreement for a defined period. To understand the broader picture of sourcing from China, you can also read our article on choosing a heat pump supplier in China.

Step	What the Buyer Provides	What the OEM Factory Provides
1. Initial contact	Product concept and requirements	Capability overview, samples, references
2. Specification	Design, branding, logo, packaging requirements	Technical feasibility, capacity and material options
3. Sampling	Approval criteria for inspection	Pre-production samples, performance tested
4. Agreement	Order volume, timeline, terms	Pricing, lead time, certification documents
5. Production	Deposit and confirmed order	Mass production under quality control
6. Delivery	Logistics and destination details	Branded, packaged product shipped to buyer

Inside the Factory: The Seven-Stage Production Process

Understanding how a heat pump is actually built helps a buyer ask better questions and identify where quality is determined. Legom’s production follows a seven-stage process at its Jiaxing facility.

1. Component intake. Compressors, heat exchangers, fans, and electronics are inspected for grade and specification. This stage matters more than its simplicity suggests, because component substitution is the most common and least visible way to reduce cost in this product category.

2. Cabinet and chassis build. The outdoor unit chassis, panels, and coil assembly are built and prepared for the refrigeration circuit. Since the unit lives outdoors for its entire service life, corrosion resistance and structural rigidity are established here.

3. Refrigeration circuit assembly. The DC inverter compressor, heat exchangers, and piping are assembled and brazed into a sealed circuit. Braze joint quality determines long-term leak integrity, and a refrigerant leak is the single most common serious failure in this equipment.

4. Vacuum and R32 charging. The circuit is evacuated, the vacuum is held to verify integrity, then charged with R32 to the correct weight. Holding the vacuum is the step that catches leaks before charging, and charge weight accuracy directly affects both efficiency and compressor life.

5. Electrical and controls. The inverter board, sensors, and controller are wired and configured for heating and cooling operation. This is the stage that makes OEM controller customization possible.

6. Performance and leak testing. Every unit is run-tested for heating and cooling output and checked for refrigerant leaks. Note that this is unit-level testing rather than batch sampling, which matters for a product whose failure requires a service visit.

7. Final QC and packaging. Function, finish, and labelling are verified before packaging for export.

What OEM Service Covers in Detail

Buyers frequently underestimate the scope available and discover options after committing. These are the categories a capable heat pump factory can adjust.

Capacity Selection

The engineering team helps you select the right capacity from the 5kW to 16kW range based on the heat load and climate of your target market. This step frequently prevents over-specification, since buyers unfamiliar with heat pump sizing tend to assume they need more capacity than the load requires.

Branding and Appearance

Casing colour, logo, nameplate, and packaging can be customized for private-label supply. For a distributor building a brand, the nameplate matters commercially as well as visually, because it is what the installer and end user see when servicing the unit years later.

Controls and Configuration

The controller, display, and operating parameters can be adapted to your control scheme and connectivity requirements. This is the most technically substantial customization available and the one most worth discussing early, since it affects how the unit integrates with the rest of your product offering.

Sample and Approval Cycle

Samples are produced and performance tested against your specification before production commitment. Treat this as a genuine gate: test the sample in your own market conditions, with your own emitters, in the configuration your customers will install.

Production Batch Testing

Performance and leak test records are available for production batches. For a distributor maintaining quality documentation, or supplying into a market where evidence of testing is expected during procurement, these records have practical value beyond reassurance.

Confidentiality

All OEM and ODM projects are handled under strict NDA, which matters when your specification or branding represents a competitive position you do not want appearing under another label.

Wholesale Terms to Establish Before Ordering

Technical specification is half of a sourcing decision. These commercial points determine whether the relationship works.

Term	Why It Matters
Minimum order quantity	Determines working capital committed to stock
Lead time, standard and OEM	Custom casing or controls extends the timeline
Sample availability	Enables verification before volume commitment
Shipping terms	EXW, FOB, CIF, or DDP shifts cost and risk
Certification documentation	CE and RoHS papers for your regulatory submission
Batch test records	Performance and leak test evidence per batch
Spare parts availability	Compressors and boards for warranty service years later
Warranty scope and process	Duration, valid claims, freight responsibility
Model continuity	Availability of matching units for future projects

Spare parts availability deserves particular emphasis for heat pumps specifically. Unlike a valve or an actuator, a heat pump is repaired rather than replaced when a component fails, and a distributor without access to compressors, inverter boards, and sensors five years after supply cannot honour a warranty. Establish this before the first order, not during the first claim.

Verifying You Are Dealing with a Real Factory

Many companies presenting themselves as heat pump manufacturers are trading companies that subcontract production. The distinction determines who can actually change a specification, investigate a quality issue, or supply a spare part.

Ask what production stages are in-house. For heat pumps this is specific and hard to fabricate: chassis and cabinet assembly, refrigeration circuit brazing, vacuum and refrigerant charging, controls integration, and performance testing. A factory can describe each.

Ask a question requiring line access. Requesting a controller parameter change, or asking what the leak test failure rate is, requires the production floor. A trading company must check and return.

Ask about refrigerant handling. Charging R32 requires equipment, procedure, and trained personnel. A supplier who cannot describe their evacuation and charging process is not performing it.

Request samples and test them yourself. Standard practice in professional procurement, and a factory confident in its product will not resist.

“The new entrepreneurs who succeed in the heat pump business are the ones who understand that an OEM partner is not just a factory that makes a product cheaply. They are looking for a partner whose product development, certification, and DC Inverter technology are already proven, so they can put their own brand on something that genuinely performs. When a new business owner comes to us, I always tell them the most important question is not the unit price. It is whether the factory can show you certification, samples, and a track record of partners who are still working with them years later. And for heat pumps specifically, ask about spare parts. A compressor fails in year four and the customer expects you to fix it. If your supplier cannot send you that compressor, the unit price you negotiated is irrelevant.”
— Maggie Shen, Director of Legom

Legom OEM Factory in China

If you are a genuinely new entrepreneur in the heat pump sector, you can submit a cooperation offer to a company experienced in handling OEM matters. Such a company will handle even logo customization smoothly. You can start looking for a heat pump OEM factory in China, Legom, online.

Legom has dedicated its factory to manufacturing HVAC systems, including heat pumps, along with our OEM and ODM services. Our partners come from many backgrounds. Some are large companies with brands you have known for decades. Others are small companies with a strong commitment to growing their business.

Production takes place at our own facility in Jiaxing, Zhejiang Province, with in-house chassis and cabinet assembly, refrigeration circuit build, R32 charging, electrical and controls integration, and performance and leak testing on every unit. Legom supplies HVAC distributors and underfloor heating system builders across more than 90 countries through over 400 OEM partners, and manufactures the matching components for a complete hydronic system, including manifolds, floor heating pipe, thermal actuators, HVAC valves, and room thermostats.

As a heat pump OEM factory in China, we understand that our role as a supplier of components and equipment can elevate your brand. That is why we work with high dedication so that all our products maintain their authenticity, safety, and quality. If you want to become the next heat pump entrepreneur, contact us about our OEM services. For more on our manufacturing standards and quality control, you can also read about our HVAC OEM factory in China.

Frequently Asked Questions

What heat pump capacities are available for wholesale supply?

Legom manufactures air source heat pumps in four capacities: 5kW, 6kW, 9kW, and 16kW. The 5kW model suits small to medium homes with two to three bedrooms, the 6kW and 9kW models cover medium to larger homes, and the 16kW model is built for large houses and light commercial buildings. All four run on R32 refrigerant with a full DC inverter compressor, provide both heating and cooling, operate down to -35°C, and carry CE and RoHS certification. Exact COP, noise level, dimensions, and power supply vary by model and configuration.

Are these air source or air-to-water heat pumps?

Both descriptions apply. Air source refers to where the heat comes from, meaning outdoor air rather than the ground or water. Air-to-water refers to where it goes, meaning into water that circulates through underfloor heating, radiators, or a hot water cylinder. Legom units are air source, air-to-water heat pumps, which is what makes them suitable for hydronic systems. They are not air-to-air units, so they do not blow conditioned air directly into rooms in the manner of a split air conditioner.

How efficient are these heat pumps?

Legom heat pumps reach a Coefficient of Performance of 4 or more under favourable conditions, meaning four units of heat delivered per unit of electricity consumed. Three factors determine the COP achieved in service: the flow temperature required, since lower is better and underfloor heating at 35°C is far more efficient than radiators at 55°C; the outdoor temperature, since colder air holds less extractable heat; and the building’s insulation standard, since a poorly insulated building forces higher flow temperatures. A distributor who understands these three can advise customers on realistic expectations rather than quoting a headline figure.

Can these units serve commercial buildings?

The 16kW model is designed for light commercial applications such as offices, shops, and small commercial premises, either as a single unit or several operating together. For commercial projects, confirm power supply availability since the 16kW model can be configured for single or three phase, and consider noise limits where the outdoor unit sits near neighbouring properties. This range does not extend to heavy industrial process heating or large district applications, which require equipment in a different capacity class.

What about WiFi and smart control?

Controller, display, and operating parameters can be adapted to your control scheme and connectivity requirements as part of an OEM project. At system level, smart and app-based control in a hydronic installation is normally handled by the room thermostats and base station rather than the outdoor unit, since the thermostat is what the occupant actually operates. The Legom thermostat range includes models with WiFi status indication and base station integration for centralized multi-zone control. If app control or building management integration is part of your specification, raise it during the specification conversation so the controller configuration and thermostat selection are decided together.

Why R32 rather than R410A?

R32 has a Global Warming Potential of 675, substantially lower than R410A, and under the European F-Gas Regulation and equivalent rules elsewhere, high-GWP refrigerants face progressive restriction. That has a commercial consequence: equipment charged with restricted refrigerants becomes harder and more expensive to service over time, so sourcing R32 today avoids selling customers into a future servicing problem. R32 also absorbs heat efficiently during evaporation, which supports a higher COP, and requires a smaller charge for the same output.

How cold can these heat pumps operate?

They are engineered to keep operating in ambient temperatures as low as -35°C, which is beyond the range where many standard units lose usable output. This makes them suitable for cold-climate markets, and Legom exports to distribution partners in Poland, Russia, and Australia. Output does decline as ambient temperature falls, which is normal physics for any air source heat pump rather than a product limitation, so cold-climate projects should be sized against the local design temperature rather than the nominal rating.

What is the minimum order quantity and lead time?

These are confirmed at enquiry, since they depend on capacity, configuration, and whether the order involves OEM customization. Standard catalogue units and custom OEM projects run on different timelines, because a custom project requires a sampling and approval cycle before production begins. Contact the technical team with your intended capacities and volumes for current terms, and factor the sampling stage into your launch schedule rather than the production time alone.

Does Legom supply spare parts for warranty service?

Spare parts availability should be established as part of the supply agreement, and it is worth raising early. A heat pump is repaired rather than replaced when a component fails, so a distributor needs access to compressors, inverter boards, and sensors for years after supply in order to honour warranty obligations. Discuss parts availability, lead times for service items, and warranty process with the team before the first order.

Can I source a complete system rather than just heat pumps?

Yes, and for most distributors this is the stronger commercial position. Legom manufactures the full hydronic system at the same facility: heat pumps, manifolds, floor heating pipe, thermal actuators, HVAC valves, room thermostats, and base stations. Sourcing the complete system from one manufacturer means compatibility is designed in rather than assumed, technical accountability sits with a single supplier, and the order value per project is considerably higher than supplying the heat pump alone.

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Reviewed by Maggie Shen, Director at Legom, on July 30, 2026. This guide to partnering with a heat pump OEM factory was reviewed for technical and commercial accuracy, including the current capacity range specifications, R32 and DC inverter technology, cold-climate ratings, and the scope of OEM service.