11 Facts on Heat Pump Condenser: What, Size, Type, Replacement

A heat pump is nothing more than an air conditioner in the summer. Let us check out the heat pump condenser’s size, kind, and replacement options.

The condenser’s job is to take the high-pressure gas coming from the compressor and turn it into a liquid. Heat transfer, or the assumption that heat will always migrate from a warmer to a cooler medium, is how the condenser of a heat pump accomplishes this.

The outside unit of a heat pump has a compressor and a condenser coil. In this post, we’ll go into further detail on a variety of topics, including what a heat pump condenser is, how it works, where it should be installed, its size, type, cost, and how it functions.

What is heat pump condenser?

Condensers come in three primary and distinct categories, including evaporative, air-cooled, and water-cooled condensers. Let us examine a heat pump condenser’s definition.

A heat pump device’s condenser is a crucial component. An outside component of a heat pump or air conditioner known as a condenser emits or accumulates heat depending on the season. The same fundamental parts are used in the construction of both heat pump condensers and split air conditioners.

Mitsubishi Heat pump innards side view.agr
Image -Mitsubishi Heat pump innards side view by ArnoldReinhold (CC-BY-SA-4.0) from Wikimedia Commons

Compressed heat from the condenser enters a water heating circuit that circles the radiator in the dwelling. The heat pump condenser is where the heat transfer occurs from the heat pump cycle to the water system.

Heat pump condenser working

The condenser keeps the heat pump and air conditioner operating at their peak levels by carrying out three crucial tasks. Let us watch the heat pump condenser in action.

  • An evaporator coil is first given air to blow over it to start the operation.
  • The refrigerant then receives heat energy that was previously delivered from the air.
  • The heat energy is then transferred in the refrigerant to a condenser coil, where it is released as air is blown across the coil by a fan.
  • Heat is transferred from one area to another by this technique.

Because once refrigerant has been reconstituted to a liquid equilibrium, the condenser rejects condensation, sub-cooled refrigerant, and super-heated refrigerant gas.  

Heat pump condenser location

Under a deck, a heat pump cannot be mounted. Let us look at where the heat pump condenser is.

A heat pump condenser should be installed in a shaded region, avoiding direct sunlight. It ought to be positioned in a place where you can breathe easily. This indicates that there shouldn’t be any substantial barriers closer than three to four feet from the unit.

If a house has numerous condenser units, they should be spaced apart so that they do not obstruct airflow from one another. Any installation that causes air to enter the heat pump from the top will reduce the heat pump’s capacity and efficiency.

Heat Pump Condenser size

Both overhead space and some side room are required for the condensing unit. Let us check the size of the heat pump condenser.

Home sizeHeat pump sizeHeat pump size
1. 500 square feet1 ton12000  BTUs
2. 1000 square feet2 tons24000 BTUs
3. 1500 square feet3 tons36000 BTUs
4. 2000 square feet4 tons48000 BTUs
5. 2500 square feet5 tons60000 BTUs
6. 3000 square feet6 tons72000 BTUs
7. 3500 square feet7 tons84000 BTUs
8. 4000 square feet8 tons96000 BTUs
9. 4500 square feet9 tons108000 BTUs
10. 5000 square feet10 tons120000 BTUs
Different types of heat pump condenser and their respective size

The contractor should arrange the condenser to ensure that it has 20 or more of rooftop headroom on the day the ductless micro split system is installed. There should be at least five inches between the condensing unit’s wall and the ground.

Heat pump condenser types and cost

The most effective heat pump condensers are those that are water-cooled. Let us explore at the many heat pump condenser types, prices, and applications.

Different types of heat pump condenserRespective priceVoltageMaterialPower sourceApplicationPhaseFrequency
1. Austin commercial swimming pool heat pump1.50 lakhs220 VPlasticElectricAir conditionersSingle50 Hz
2. ACL PH 18 heat pump4.14 lakhs240 VPlasticElectricIndustrialSingle50Hz – 60 Hz
3. Plastic emerson heat pump3.50 lakhs220 VPlasticSolar energyIndustrialSingle50 Hz
4. Austin Heat pump1 lakh230 V – 380VHeater material – TitaniumElectricSwimming pool heaterSingle50 Hz
5. Plastic Austin commercial swimming  pool1.50 lakhs220 VPlasticElectricCommercialSingle50Hz
6. Austin stainless steel swimming pool2.50 lakhs230 V – 380 VStainless steelElectricSwimming poolSingle50 Hz
7. Commercial heat pump water heater2.56 lakhs220 V- 240 VPlasticElectricCommercialSingle50 Hz
Different types of heat pump condenser, their features,and respective cost and application

A heat exchanger known as water cooled condenser transfers heat from refrigerant vapor to the water that is travelling through this one. This is accomplished by having the refrigerant vapor condense on the tubes outside.

Heat pump condenser replacement

Many heat pumps are also able to cool a building by rejecting heat air after draining it from the enclosed area. Let us review the replacement of the heat pump condenser.

  • Unidentified noises
  • Maintaining price increases for energy
  • Protection of sensitive information
  • The condenser requires ongoing maintenance
  • Approximately ten years old

Unidentified noises

If indeed the controller can discern between typical and unsettling noises the heat pump condenser generates as it functions, the system has to be examined whenever clients detect weird noises. It can indicate that something needs to be altered.

Maintaining price increases for energy

The heat pump is not using energy effectively if the operator does nothing in the face of increased electricity prices. A replacement condenser can assist in reducing those energy expenses if the operator’s heating system is working harder to deliver the same level of warmth and cooling.

Protection of sensitive information

The owner and their family could be at grave risk of experiencing major health issues if the heat pump equipment has a carbon monoxide leak. If the heating unit leaks, a condenser needs to be installed in its place.

The condenser requires ongoing maintenance

The condenser in heat pump needs occasional maintenance owing to normal ageing wear and strain. However, the heat pump system can go along swiftly if the condenser is fixed properly.

Approximately ten years old

Heat pump last between ten and fifteen years on average. The condenser in the system is less effective at cooling and heating the user’s home if there have been double-digit shifts. Utilizing more recent models with higher efficiency ratings may enable users to reduce their monthly electricity costs.

Whenever it pertains to cooling, a heat pump will be more efficient than an air conditioner. Air conditioners use five times as much electricity as heat pumps. An electric kick on a pump that is in heat mode might increase energy consumption.

How often and when should heat pump condenser be replaced?

  • When the heat pump system starts to make noise, the condenser should be replaced.
  • The condenser must be replaced if the furnace, boiler, heat pump, air conditioner, or heat pump is running frequently.
  • When a heat pump user is uneasy in their own house, the condenser has to be changed.
  • When a heat pump system suffers a serious malfunction, the condenser must be repaired.
  • When a heat pump condenser reaches the age of ten years, it should be changed.
  • Older systems should have their heat pump condensers updated when electrical problems are more likely to occur.
  • The heat pump condenser needs to be replaced when an outdated system permits carbon monoxide to enter the house.

What happens if heat pump condenser is not replaced?

  • The heat pump system won’t have any airflow at all if the condenser isn’t replaced. The noises produced by condenser can vary depending on the issue. Strong cries, disruptions, and crunching can be caused by a broken condenser.
  • If the heat pump condenser is not changed, the blower could overheat and destroy the entire system.
  • If the heat pump condenser is not replaced, a bad odor could develop.

Heat pump condenser cleaning

Increase comfort, productivity, and energy savings with a straightforward heat pump device. Let us check out the cleaned heat pump condenser.

  • In the beginning of the process, keep in mind the equipment has been switched off at the generator, shut off, or breaker box before starting the process.
  • Wipe the space that surrounds the condenser next.
  • Take off the heat pump’s exterior shell.
  • Uninstall the fan and top grille.
  • Use a condenser coil cleanser or a soap-and-water solution to cleanse the condenser coils.
  • Wash it from the outside using a garden hoses, making sure to strike the fins straight on rather than at an angle.
  • Any bent fins can be straightened with a fin comb.
  • Reinstall the heat pump cover and top grille.
  • Restart the electricity at last.

The owner of the heat pump should at least once a year hire qualified professionals to service the unit. A professional might perform servicing procedures including duct leakage investigation and repair, among others.   

When to clean heat pump condenser?

  • Whenever dirt and dust build up, the heat pump’s condenser needs to be cleaned. Before installing a quality air filter, if at all feasible, clean the fan of any debris. If not, speak to an expert.
  • The condenser must be maintained when the heat pump has an excessive amount of moisture. The user should dial an expert to see if it can be dried out and mended.
  • It is necessary to clean the condenser if it has a bad capacitor.
  • When a heat pump condenser ages, it requires to be swept.
  • The condenser of a heat pump needs to be cleaned when the ducts are unclean or leaky.
  • When the filter is clogged, the condenser needs to be cleaned. Every three months, change the filter.

What will happen if heat pump condenser is not cleaned?

  • The furnace will constantly overheat if a heat pump condenser is not cleaned and a fresh air filter is not used.
  • If a heat pump condenser is not cleaned, it can quickly rust, leak cooling liquid from the heating system, and perhaps irreparably damage other system components like the compressor.
  • If the heat pump condenser is not cleaned, the pressure loss will be larger.

How to fix a heat pump that freezes in the winter?

Only 10 to 15 minutes are usually allotted for defrost mode. Let us look into how to repair a heat pump that clogs during the cold months.

To repair a heat pump that freezes in the winter the defrost cycle can be used. Heat pumps are made to remove the chilly air from a house without freezing. The heat pump must enter defrost mode when it gets too cold to stop this from happening.

The heat pump usually enters air conditioning mode when in defrost mode until the problem with the freezing is resolved. The user can then return to the heat mode. In the winter, it is logical to ice the heat pump. Under specific climate situations is it usual if the entire coil gets a little ice layer.

Heat pump vs. heat pump condenser

The heat pump condenser and the heat pump are separate appliances. Let us see how a heat pump compares to a heat pump condenser.

CharacteristicsHeat pumpHeat pump condenser
1. DefinitionApproximately 85% of the heat is contained at 21 degrees Celsius. A heat pump, which may be used to cool and condition the air within buildings as well as heat them on cold days, makes excellent use of the ground and air outside structures’ propensity to retain a significant amount of heat.The condenser of a heat pump device is an essential part. Depending on the season, a condenser, an exterior part of a heat pump or air conditioner, either emits or absorbs heat. Split air conditioners and heat pump condensers are both built using the same basic components.
2. PerformancePerformance is higher since the heat pump’s efficiency can increase by up to 90%.A heat pump condenser can be more expensive and inefficient than a heat pump device.
3. EconomicalEven though a heat pump is slightly more expensive, the owner will save a lot of money annually.Economically, it is less expensive, but the bill can be more.
4. LifespanWith regular upkeep, it can endure up to 20 years.It has a 15-year maximum lifespan.
5. CapacityLimited.More.
Heat pump vs heat pump condenser

How long heat pump condenser last?

It costs a lot to replace a compressor. Let us observe the heat pump condenser’s lifespan.

A heat pump condenser can last anywhere between 10 and 20 years, with 15 being the standard depending on how frequently it is used. Heat pumps function similarly to air conditioners, although they are frequently utilized for longer periods of time each year because they can supply both warmth and cooling.

An air conditioning system is most likely not worth it if it is older than 12 years. Placing the compressor, nevertheless, is the best alternative if the guarantee on it is still in effect.


This essay leads us to the conclusion that the condenser is a crucial component of a heat pump system. The following subjects are covered: what is a heat pump condenser? where to find a heat pump condenser, how big a heat pump condenser should be and many more.

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