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Renewables Air Source Heat Pumps

Air Source Heat Pumps at Bassetts Northern Ireland

Thinking about an Air Source Heat Pump for your home? Bassetts heating design engineers are at the forefront of renewable heating innovation. Call us for advice on any heat pump question.

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An Air Source Heat Pump is a green alternative to gas and oil boilers, air-source heat pumps absorb heat from the outside air to heat your home and hot water. They can still extract heat even when air temperatures are as low as -15°C!

Air Source Heat Pumps are a popular renewable solution for homeowners looking to reduce rising fuel bills. When designing your dream home, it is important to incorporate a heating system that fits your lifestyle. Studies have shown an Air Source Heat Pump and underfloor heating work excellently together in order to achieve a comfortable, environmentally-friendly warmth in your dream home.


An Air Source Heat Pump uses energy absorbed from the air and transfers it to the water based heating system via a vapour/compression cycle.

The process uses a refrigerant gas R32/R290 which has a low boiling point. When the R32/R290 gas is exposed to external air it heats up and compresses causing the temperature to increase. It then changes from a gas to a liquid before passing through a heat exchanger transferring heat to the heating system. As the heat is transferred to the heat exchanger the liquid changes back to a gas and the cycle is repeated.


Our experienced team of heating design engineers have been in the business for over 40 years. Our team has carried out research on numerous types and models of Air Source Heat Pumps. At Bassetts we have partnered with the best Air Source Heat Pump manufacturers and are confident in the brands that we trust. We can design and supply all your home heating requirements.

Questions about costs, installation or which brand of Air Source Heat Pump is right for you? Send us an enquiry below and our team of heating experts will be in touch. 

Benefits of an Air Source Heat Pump

You Control Your Heat Demand

Air Source Heat Pumps utilise integrated technology to smartly manage heat demand and provision between space heating and hot water to ensure that a property’s heat demand is continuously met in the most efficient manner.

Quality of Heat

Traditional heating systems and fuels such as gas and oil provide heating in ‘blasts’ either when required or as per programming. Air Source Heat Pumps provide high-grade consistent heat at lower temperatures over a longer period of time. The result is a more ambient type of heat provision that is boosted further by the increased heat retention in new dwellings.

Saving on Energy Bills

Typically, an Air Source Heat Pump is somewhere between 25 – 30% more cost-effective in a new build to run than their traditional heating alternatives.


Air Source Heat Pumps work most efficiently with underfloor heating as the main heating source within the home, as this is designed to run at a lower flow temperature ideally 35 degrees.

Aluminium radiators are also an excellent choice for the ASHP because of their high conductivity and low temperature requirements, designed at a flow temperature of 45 degrees.

2Steel radiators can also work but because they require a higher flow temperature and the size of the steel radiator must increase to compensate for the temperature drop which in turn will reduce wall space.

Easy to install, run and maintain

The installation of the Air Source Heat Pump is straight forward and no more time consuming than that of an oil boiler for the plumber, once it has been set up by the commissioning engineer, the end user will only have to set the room thermostats to their desired temperatures. Maintenance is carried out once a year and the process is clearly set out within the service book.

Yes, here in Northern Ireland and throughout the UK we have a very suitable climate for Air Source Heat Pumps, as we very rarely get long periods of below minus temperatures, our average temperature in heating season is 7 degrees, which works well with Air Source Heat Pumps.

As we use Mono-Bloc Air Source Heat Pumps the servicing is very simple. You must ensure the ASHP unit is clean and clear of debris as in dirt, leaves etc. and make sure the magnetic filter is clean. We would recommend checking these twice a year.

A Mono-Bloc Air Source Heat Pump has all the refrigerant incorporated in the outdoor unit. A split unit Air Source Heat Pump has an outdoor and indoor unit which has the refrigerant running between the two units. A split unit must be serviced and checked by an F-Gas registered engineer annually. (Usually the charge for this service can be between £300 and £400 pounds annually).

Ideal location would be as close to the building as possible to avoid any heat loss from the unit into the building. Ideally south facing to avoid harsh weather and wind conditions.

Air Source Heat Pumps can be used with underfloor and/ or radiators. The underfloor or radiators must be sized to run at a lower flow temperature usually 30 – 45 degrees, to main the efficiency of the ASHP.

Yes, however Photo-voltaic systems work best with direct sunlight which is season dependant and usually not the months when we use our heating systems.

Yes, which is ideal for heating hot water during the summer months when we have a good amount of sunlight.

Not at all, Air Source Heat Pumps running at their maximum load, make no more noise than a dishwasher running. At one metre away it will be approximately 54db.

Air Source Heat Pumps run most efficiently at lower flow temperatures opposed to an oil or gas boiler running at higher flow temperatures. To retrofit an ASHP into an older dwelling, you may need to do additional work, e.g. upgrading your radiators, insulation, windows, ventilation etc. Air Source Heat Pumps will work and can run at a higher flow temperature, but in turn will be more expensive. Please bear this in mind when thinking of installing in a retrofit project. Our heating experts can best advise the optimum heating system for this.

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