Introduction

As the world moves toward carbon neutrality, heat pump systems are rapidly gaining momentum as a clean, energy-efficient solution for both heating and cooling. By transferring heat instead of generating it through combustion, heat pumps significantly reduce energy consumption and greenhouse gas emissions.

At Solareast, we are proud to contribute to this global transition with our advanced air-source heat pump technologies. But how exactly do heat pumps work—and why are they becoming the preferred choice for modern homes?

Let’s explore the principles behind this transformative technology.

How Do Heat Pumps Work?

A heat pump system is an energy-efficient alternative to traditional heating methods. Unlike gas or oil furnaces that burn fuel to generate heat, heat pumps simply move existing heat from one place to another—using significantly less energy in the process.

In heating mode, a heat pump extracts thermal energy from the outdoor air, even when it’s cold outside, and transfers it indoors through a refrigeration cycle. In cooling mode, the process is reversed, working much like an air conditioner. This dual-functionality makes it an ideal heating and cooling system for year-round comfort.

Because they don’t rely on combustion, heat pumps are much more environmentally friendly, producing lower carbon emissions and often qualifying for government incentives. In addition, a heat pump for house or commercial use can be integrated with other systems, such as gas boilers or solar panels, to form a hybrid heating solution—providing both flexibility and enhanced reliability in extreme conditions.

Heating and Cooling Cycle Explained

Heating Mode: How Heat Pumps Extract Warmth from Cold Air

In heating mode, a heat pump system absorbs thermal energy from the outdoor air and transfers it indoors using a closed refrigerant cycle. At Solareast, our units utilize low-GWP refrigerants such as R32 and R290, which offer efficient heat transfer and minimal environmental impact.

The cycle begins when high-pressure liquid refrigerant passes through an expansion device, becoming a low-pressure liquid–vapor mixture. This refrigerant enters the outdoor coil, acting as the evaporator, where it absorbs heat from the surrounding air and evaporates into a low-temperature vapor.

The vapor then flows through a reversing valve and accumulator, which removes any leftover liquid before entering the compressor. In the compressor, the vapor is compressed into a high-pressure, high-temperature gas.

This gas travels to the indoor coil, now functioning as the condenser, where it releases its heat into the indoor air. As the gas cools, it condenses into a high-pressure liquid, and the cycle repeats.

Cooling Mode: How Heat Pumps Remove Heat in Summer

In cooling mode, the refrigerant cycle reverses to remove heat from indoor spaces and expel it outside. The indoor coil becomes the evaporator, and the outdoor coil acts as the condenser.

The process begins when high-pressure liquid refrigerant flows through the expansion device, dropping in pressure and temperature to form a low-pressure liquid–vapor mixture. This mixture enters the indoor coil, where it absorbs heat from the indoor air and evaporates into a low-temperature vapor.

The vapor passes through the reversing valve and accumulator, then enters the compressor, where it becomes a high-pressure, high-temperature gas. This gas is sent to the outdoor coil, where it releases its heat to the outdoor air and condenses back into a high-pressure liquid. The cycle then repeats.

Additionally, as warm indoor air flows over the cold evaporator coil, moisture condenses on the coil surface and is collected in a drainage pan, helping to dehumidify the indoor environment during hot and humid months.

Solareast Heating Heat Pump Lineup

Solareast offers a full lineup of air-to-water heating heat pumps, covering both residential and commercial applications with power ranges from 4kW to 200kW.

▸ Residential Series (4kW–24kW)

Designed for apartments, houses, and villas, our residential systems support dual-supply (heating + DHW) or triple-supply (heating + cooling + DHW).
These units are compact, energy-efficient, and typically use R290 or R32 refrigerants, offering both high efficiency and low global warming potential (GWP).
They’re ideal for year-round comfort in modern homes.

▸ Commercial Series (50kW–200kW)

Built for hotels, schools, and public buildings, our commercial heat pumps provide powerful heating and stable hot water supply.
Most models operate with R290 or R410A refrigerants, combining large-scale capacity with proven reliability.
These units feature smart control compatibility and modular design, making them ideal for scalable heating projects.

All Solareast heating heat pumps meet ERP A+++ energy standards, and support full inverter control and IoT integration.

Heating System Setup: How to Connect Your Heat Pump

Underfloor Heating System

This is the most basic and efficient heating setup, delivering stable low-temperature comfort via radiant floor coils. Ideal for residential applications with single-zone heating needs.

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Underfloor Heating + Domestic Hot Water + Solar Heater

A multifunctional solution that integrates space heating, hot water production, and solar energy utilization. This setup improves energy efficiency and supports year-round performance.

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Underfloor Heating + Fan Coil + DHW

Designed for larger homes or villas, this configuration supports dual-temperature zones. It combines underfloor heating, fan coils for cooling, and domestic hot water, all managed through one smart heat pump system.

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Why Choose Solareast Heating Pump System?

Solareast offers a full range of air-to-water heating heat pumps designed for performance, flexibility, and global compatibility. Our systems deliver up to 80°C outlet water, perform reliably at -25°C ambient temperatures, and achieve A+++ energy efficiency with inverter compressor technology. We support multiple refrigerant options—including R290, R32, R410A, and R134a—to meet both environmental standards and diverse regional regulations.

Backed by a vertically integrated supply chain and ISO-certified production, Solareast ensures full control over quality and innovation. With over 20 years of export experience, international certifications (CE, ERP, CB, MCS), and customized OEM/ODM support, we are a trusted partner for heating projects across Europe, North America, and beyond.

Ready to bring high-performance, low-carbon heating to your market? 

Reach out to Solareast and let’s build your solution together.