Air Source Heat Pumps can reduce your heating and hot water bills considerably and, of course, your carbon footprint. Unlike Ground Source Pumps (GSHP) they’re easy to install even when retro-fitted, and are so reliable they are almost completely fit and forget.  All you need is a couple of square-metres free space somewhere in your garden!

Why an Air Source Heat Pump?

The key to the efficiency of an Air Source Heat Pump is that it is cheaper to move energy around rather than to convert it from one form to another.  In other words, extracting free thermal energy from the air outside your dwelling and bringing it inside to heat your living space is cheaper than taking oil, gas, coal and converting it (by burning) into heat.

Take natural gas, for example.  The Government ‘bands’ the efficiency of gas boilers as a percentage of energy input to the energy output.  An ‘A’ band boiler is defined as being over 90% which is pretty good.  This means that for every £1.00 worth of gas you’re buying, you’re getting a little over 90p’s worth of heat. Most gas boiler manufacturers would be ecstatic if they could reach 99% efficiency.

If we produced a heat pump with such low performance, we’d cry! With an our ASHPs in normal use, you can never get less than 100% efficiency, no matter what the demands on the heat pump.  Depending on the Heat Pump, the ‘flow temperature’ of your system and the ambient temperature, it is possible to achieve around 400% efficiency – in other words for every £1 of energy you buy, you’re getting around £4 worth of energy into your system!!!

But currently the financial benefits don’t just end there… If your ASHP is fitted by an MCS registered fitter, and the equipment is MCS approved, then you should be eligible for a Government backed scheme called the Domestic Renewable Heat Incentive (RHI) which will give you quarterly payments for seven years. All of our ASHPs are compliant, so not only would you make considerable savings on your current heat source, but you’ll be paid a bonus for doing so too!

Yet another benefit is that during the summer when it gets really hot, ASHPs can be run in reverse – which means they can COOL your house too! Of course it’s equally efficient in reverse too, except that as we don’t normally cool our houses when it gets hot, it will add to your electricity bills. Some really important thing to consider about air source heat pumps…

Beware the claims that an air source heat pump will replace your boiler… ASHPs are really efficient when they are running your heating system – especially when it comes to things like under floor heating (UFH) or fan coil radiators– as they work at a lower temperature than a conventional radiator. As the outdoor temperature cools, so the ASHP pumps have to work a little harder to make up the difference.

If the water temperature demands are low, such as with UFH, then the pumps can easily take this in their stride even when it’s literally freezing outside! BUT… if an installer claims they can provide domestic hot water for your taps, then tread very carefully. While yes, technically they can do that, to be effective the poor old pumps have to work their socks off, especially in cold weather, and really aren’t brilliant at providing both hot water and heating water at the same time. It’s not good practise – not only does the equipment wear much faster, but it’s also inefficient. Luckily – we have the answer! Take a look at our fan coil radiators and– and prepare to be amazed.

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Why Use Thermovec Fan Coil Radiator Units?

The ideal emitter for an Air Source Heat Pump (ASHP) is Under Floor Heating (UFH). This is because an ASHP normally produces the heating medium (water and glycol) at around 35°C. But, where you cannot use UFH for practical, aesthetic or design reasons, you need an emitter that will operate at those temperatures. Using standard radiators can be the solution but they would have to be massively (up to 680%) oversized to meet MCS guidance.

Our fan coil radiators are designed to work efficiently with lower flow temperatures and to disperse the thermal energy across each room although they work equally well with traditional boilers. In fact, they are up to 300% more efficient than a standard radiator.

We decided to design our own Fan Coil Units because we thought that the ones we had been installing for clients were too bulky, too noisy and too expensive. So, our units are slim-line, quiet and very competitively priced.