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Why heat pumps are ideal for underfloor heating

Posted by Jason Hobbins on 22 March 2013 at 9:46 am

Heat pumps are the most efficient way to power wet underfloor heating systems. Unlike a gas or oil boiler, which heats water to between 65 and 85°C, a heat pump generates hot water at around 40 degrees. 

Walking on a 65°C floor will scald your feet and crack your floor covering! So if you were to use a conventional fossil fuel boiler for your underfloor heating you have to mix hot and cold water to bring the temperature back down from 65 degrees to a more comfortable temperature – which is extremely inefficient. 

35 – 45°C is a good temperature for underfloor heating, and as it’s inefficient to heat water only to cool down again before you use it, a heat pump is an ideal choice – efficiently producing hot water at the ideal temperature for underfloor heating. 

A word of caution, however! Make sure you factor the use of a heat pump into your underfloor heating installation. Wet underfloor heating works by laying pipes at a set distance apart under the floor. The temperature of the water running through the pipes should determine the spacing between the pipes. Traditional underfloor heating will have distance of 30cm between the pipes, for heat pumps the distance should be reduced to 20cm for better efficiency.

More information about heat pumps and underfloor heating from YouGen

Is a heat pump suitable for my home?

Heat pumps and underfloor heating: perfect partners?

Heat pumps: 10 things a good installer should ask

Using an air source heat pump with an existing heating system: 5 key things to consider

Find a local heat pump installer

Photo source: Wikipedia (Creative Commons Licence by Vesta)


About the author: Jason Hobbins is Managing Director of EnergyMyWay

If you have a question about anything in the above blog, please ask it in the comments section below.

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1 comments - read them below or add one


sdelengComment left on: 6 March 2015 at 12:02 pm

So if I do not know the distance of my pipes, best not to take a chance?


Also, are heat pumps any good with solar installations?  I mean will they require too much electricity.  I am on a mountain si have no soft ground and would need an air source heat pump.



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