Air to Air heat pump for a flat ? An improvement on Electric Ceiling Heating.

heat-pump-newbie · 2022-11-16T22:40:06Z

I'm looking at a flat to purchase and rent out. I've come across one that has Electric Ceiling Heating. I've never heard of this before and read that it was used in the 70s/early 80s. Not surprisingly all the flats in the block with an up to date EPC all are rated at E. They also have an off peak immersion for hot water. Does anyone have any experience with this type of heating ? It sounds horribly expensive and possibly a bit useless, though all the flats still have it. In an effort to improve the heating I was wondering if an A2A heat pump could be bolted on the outside wall of the flat if it wasn't too obtrusive ? Any thoughts ?

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Derek M

(@derek-m)

Illustrious Member Member

Joined: 4 years ago

Posts: 4427

18/11/2022 7:52 pm

@heat-pump-newbie

Hi Newbie,

Were you complimenting me on my brilliant installation or the heat pump on it being neat and compact? Of course I did have to get my wife to lift it into place, couldn't possibly risk my back. 😯

I should point out that it is rated at 2.6kW and weighs I think 32kg. A smaller size unit was chosen for two main reasons, one being to gain more experience with ASHP's, and the other to better utilise our solar PV generation in Spring and Autumn and hence reduce our gas consumption. It also provides adequate air conditioning during the hotter Summer days. I do now regret not getting a system with two indoor units being supplied from one outdoor unit, but at the time I was not certain where to mount a second indoor unit.

If you wish to see more details of what is available, go to the Appliances Direct website and look under AC units. Whilst you can buy one for a fraction of the cost of an A2W system, you may struggle to get a local AC Engineer to install it for you. For some strange reason they seem to want to supply you with a unit from their supplier, at much elevated prices. I do believe Appliances Direct can provide an installation service.

The other thing of which you need to be aware, is that an A2A unit does not provide hot water.

👍

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Derek M

(@derek-m)

Illustrious Member Member

Joined: 4 years ago

Posts: 4427

18/11/2022 7:59 pm

Posted by: @mjr

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Posted by: @derek-m

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Just like an A2W heat pump, you need a good flow of fresh air through the outdoor unit

Yes, the unit was much smaller than the recess, with the rest of the grille being basically an intake for the rear of the unit.

If the unit is mounted at ground level there is always the risk of it drawing the colder discharge air back into the intake at the rear. It may be possible to arrange suitable ducting to ensure that the intake air is obtain some distance from the exhaust.

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mjr

(@mjr)

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Joined: 3 years ago

Posts: 301

19/11/2022 8:18 pm

Posted by: @derek-m

↑

Posted by: @mjr

↑

Posted by: @derek-m

↑

Just like an A2W heat pump, you need a good flow of fresh air through the outdoor unit

Yes, the unit was much smaller than the recess, with the rest of the grille being basically an intake for the rear of the unit.

If the unit is mounted at ground level there is always the risk of it drawing the colder discharge air back into the intake at the rear. It may be possible to arrange suitable ducting to ensure that the intake air is obtain some distance from the exhaust.