Air Source Heat Pump

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What are air source heat pumps?

Low carbon tech

Air source heat pumps (ASHPs) are a low-carbon technology that provides efficient heating and cooling solutions for homes in any climate.

Summer and Winter

Air source heat pumps (ASHPs) transfer heat from the outside air using electricity to provide both heating and hot water in some models (air to water heat pumps) during the winter. However, they can reverse this process to offer cooling in the summer.

Energy Efficiency

Installing an ASHP can lead to lower utility bills and increased energy efficiency compared to conventional heating technologies. While generally considered environmentally friendly and a viable option for most projects, their efficiency can decrease in very hot and cold climates.

Air source heat pump benefits

Lower carbon footprint

ASHPs use outside air to heat or cool homes with high efficiency, using 1 unit of electricity for 3-4 units of heat. Combining a heat pump and solar panels together can make the system the most sustainable form of heating.

Save money on energy bills

Switching to air source heat pumps can significantly reduce your annual electricity bill.

Can be used for heating and cooling

ASHPs can provide heating in winter and cooling in summer.

Can be used for space heating and hot water

ASHPs can heat water and spaces, with flow temperatures of 60°C for hot water and 35°C for space heating.

Low maintenance

ASHPs require annual servicing by a qualified heating engineer.

Long lifespan

ASHPs can operate for up to 15 years with proper maintenance, and most have 5-year warranties.

Can be integrated with solar PV

ASHPs run on electricity and can be integrated in a new or existing solar PV system.

Air source heat pump disadvantages

Lower efficiency below 0°C and above 35°C

ASHPs lose efficiency below 0°C and above 35°C due to fluctuations in outside air temp, with heat output decreasing as temperature drops and cooling output decreasing as temperatures rise.

Noisy operation

ASHPs can be somewhat noisy, comparable to an air conditioner or light to heavy rain.

Outdoor Installation

ASHP’s need to be installed outside, or ducted from internal plant rooms, requiring louvres and sound attenuation, adding cost to potential projects.

When we moved into our house last year, just as winter was setting in, we realised we needed to retrofit 2x 30yr old gas boilers for our underfloor heating system. After trying to get quotes, install times from other vendors, Radiant were able to come out on short notice and inspect our system / requirements. Sizing the system was quite complex given the type of piping used in original build, the layout of our house, expected usage of each section and the potential heat loss from single pane windows.
Within a few weeks, Radiant were on on site installing 2x new electric heat pumps including the relocation of DHW units / buffer tanks to make better use of our internal space. Once installed, our house was nice and warm throughout the depths of a Southern Highlands winter and the efficiency of the unit was much better, and I continue to gain efficiencies through minor adjustments (timer settings, buffer tank temperatures etc) which I discuss with the Radiant team. Been a pleasure to work with Jimmy and Josh

Ben McCallum

Stop before you do anything with your home heating or cooling, or specifically geothermal or with heat pumps, talk to these guys. We've had a very complicated geothermal heating system, multiple heat exchangers, underfloor heating, pumps and also water cooled AC.
Jimmy and the team were the only ones who knew absolutely everything that needed to be done to get it working properly, efficiently. Not only that they explained everything along the way and made sure the system and us as the users were operating it and it was properly setup. My only wish is that we'd engaged Radian Heating and Cooling earlier in the process it would have saved so much time and effort.
These guys solved lots of problems others couldn't and set the system up much better and with more reliability. They are always ready to answer a quick question and very responsive. I rarely write reviews but these guys really deserve the review and you'll be very happy you engaged them. Thanks Jimmy and team !

AIR SOURCE HEAT PUMP

What are air source heat pumps?

Ben McCallum

James Spenceley

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