What Is heat Pump Condenser?

Heat pumps are a great way to enhance the comfort of your home through all the seasons. Are you planning to upgrade to a heat pump or have recently made a purchase? It is essential to have the know-how of the function of its different components in the exchange process. On this write up we will focus on the condenser which is one of the four key components of a heat pump.

This component and the compressor are installed outside your house for monoblock systems, while it is located in the internal unit for split heat pumps. There is more on the condenser’s function, importance, maintenance, cost, etc. Let’s dive in.

Heat Pump Condenser: Definition & Function

A heat pump condenser ‘rejects’ the excess heat of a refrigerant and changes it to liquid, allowing for the evaporator stage. Despite the different installation locations in the monoblock and split systems, all heat pump condensers work the same. A condenser is made up of parts like copper coils, fan, compressor and cabinet controls. Other materials like aluminum are used on the coil to enhance the heat transfer process. The main components of the heat exchange process are:

Fan– an induced or forced fan allows for heat transfer in the condenser. It absorbs cold air and releases hot air after it passes through the coil.

Coil– This part works with the compressor to change the refrigerator from gas to warm liquid. It also defrosts the heat pump components in the event of freezing.

Compressor – There are two types of compressors. The rotary compressor and the reciprocal compressor. The compressor plays an important role in the condenser; it feeds the warm liquid to its coil as heated air.

Expansion Valve – This is the part of the condenser that reduces the refrigerant pressure to allow for the evaporator stage.

Evaporator – The evaporator serves the function of bringing in air from the outdoors.

Functions of a Heat Pump Condenser


The refrigerant is at optimum temperature (beyond saturation point) as it exits the compressor. The desuperheating process ‘takes care’ of the excess heat by reducing its temperature to saturation point. This process takes place in the middle of the compressor and the condenser coil.


The refrigerant is now ready to be transformed into the liquid state after it reaches saturation point. This is just one of the stages of the heat exchange process. Nevertheless, it is essential as it allows for easy flow through the cycle.


This is a function of the condenser after condensation of the refrigerant; the refrigerant needs further cooling. The subcooling process takes place at the expansion valve and it ensures the refrigerant retains the liquid state.

Heat Pump Condenser Materials

The material used to manufacture condensers should be corrosion resistant as they are in constant contact with the refrigerator fluid, lightweight and good thermal conductors. Most components are made of metals. The most common options are copper, aluminum and stainless steel due to their efficiency and cost effectiveness.

Heat pump manufacturers use copper to produce heat exchangers that offer durability in harsh operating environments. An advantage of copper condensers over steel ones is that you won’t have to worry about the inefficiency of poor galvanized coatings. Some condenser materials are:


This material is mainly used to make the condenser coil because of its good heat transfer properties. Copper can be combined with aluminum to improve its rust resistance.

Stainless Steel

Condensers made from this material are mostly common in boilers. Copper has better thermal conductivity; up to 20 times, and therefore is preferred over stainless steel for heat pump condensers.


Just like copper, brass is combined with metals like zinc to make it more corrosion resistant. It is non-ferrous, sturdy, and workable which makes it suitable for manufacturing condenser parts.  This alloy is made by blending copper and zinc.


This material is popular for its cost effectiveness, durability, and recyclability. It is rarely used in heat pump manufacture on its own. Rather, it is used with copper on condenser coils to improve the corrosion resistance.

Advantages of Cleaning A Condenser

The benefits of clean condenser components should not be underrated. It is an effective way to ensure the proper running of the entire system.

Energy Efficiency

Heat pumps are popular for their energy efficiency over traditional heating solutions. Why not go further to save on energy? The buildup overworks the condenser, leading to increased energy consumption. This can affect the lifespan of the condenser and the overall function of the heat pump.

Better Comfort

Cleaning and maintenance of both the indoor and outdoor parts of your heat pump is essential in improving the air quality of your home. A dirty heat pump can lead to insufficient heating and cooling. Ensure you clean the condenser coil during the quarterly cleaning routine of the unit.

Enhanced System Lifespan

The buildup of dirt and other foreign matter in the condenser coil can affect the function of the entire system over time. It also causes other components to overwork which leads to breaking down from wear and tear. Regular cleaning and maintenance ensure the system functions through its lifespan.

High Performance

A dirty condenser coil is a leading cause of heat pump breakdowns. It can cause performance issues; repairs can be costly and time consuming. A clean condenser coil improves the function of the entire system.

Factors That Affect the Efficiency of a Heat Pump Condenser

Variation In Temperature – An increase in temperature variation of the refrigerator and vapor increases the rate of the heat exchange process.

Material – As mentioned, there are various materials used to make condenser coils. Each of them has different heat transfer properties. Copper has a good heat conductivity. This property is important as it allows for small sized condensers.

Condenser Medium – This is the medium that allows for the gaseous to liquid process of the refrigerator. The two main condenser mediums applicable in heat pumps are air and water. Water is the most efficient medium for heat pump condensers.

Contact – During the heat exchange process, the components of the condenser are in contact with air or water medium. The more the contact, the higher the condenser capacity.


What Causes High Condenser Pressure?

There are various issues that can hinder the proper function of a condenser. The most common problem is dirt and blockage in the coil. You should take prompt action for this problem as it can lead to damage of other heat pump components. Some ways you can prevent and fix it are by firstly, ensuring you exercise proper maintenance by cleaning the dirt buildup, and replacing damaged coils. Also, you can arrange for a heat pump expert to regularly clean the heat pump condenser

Are Heat Pump Condensers Repairable?

When your heat pump condenser is malfunctioning, there are telling signs like higher energy bills, overheating, leakages, and fan failure. There are quick solutions to most of these problems; however, some are more costly and time consuming. Extensive skills are necessary while handling any heat pump condenser repairs, hence ensure you should hire a professional if you don’t have these skills. Some condenser issues that call for repair or replacement are:

● Strange noises during function

● Increased energy consumption

● Insufficient cooling and heating

● A lifespan extending 10 years

Where Should I Place My Heat Pump Condenser?

Ensure your heat pump condenser is properly placed to allow for efficient air circulation and a flowing heat exchange process. You should factor in different parameters of the location; for instance, the outside is an ideal location as there is a limitless supply of air. Nevertheless, clear any bushes, leaves, trees, etc., to avoid blockages. Ensure the condenser is installed away from direct sunlight to avoid damage to its components.

What Is the Heat Pump Condenser Lifespan?

There are various factors that determine whether a heat pump condenser functions throughout its lifespan. Maintenance is key! Additionally, modern heat pump brands might last longer than older ones.

Heat Pump Condenser vs. Heat Pump Unit

There are key differences between the heat pump system and the condenser component. The heat pump functions as an entire unit, while the condenser is an integral part of its function. A heat pump system is more cost effective and energy efficient; purchasing the condenser part separately might be less efficient. Nevertheless, replacing old or malfunctioned condensers is necessary for the proper function of the heat pump system.

A heat pump is more expensive than the condenser; however, you will recover the upfront cost in the long run as you will save on energy bills. Both require proper maintenance and regular cleaning for a longer lifespan. That said, a heat pump unit that is properly cared for will last you up to 20 years while a condenser lasts about 5 years less. The lifespan of the heat pump and condenser is also relative to how often you use either. Technology advancements have allowed for more efficient, compact and environmentally friendly heat pump components.


The main role of the heat pump condenser is the heat transfer process. All condenser types are made up of the same components, but there are different models in the market. You should factor in the size and location of your home while choosing a condenser. It is important to get a professional for any replacement or repairs as its parts are intricate.

Proper maintenance and cleaning are a great way to improve the function of your heat pump condenser and improve the air quality of your home. SPRSUN offers top quality heat pump condensers. Contact us today for a prompt quote.


    Ваша корзина пуста