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Heat pumps

A place to get help with air source and ground source heat pumps, sharing experiences with other MoneySavers.

New to the heat pumps board? start here
💬 Some other boards on the Forum that might be relevant * Green & ethical MoneySaving * Energy * In my home (includes DIY) ℹ️ Some relevant guides elsewhere on MoneySavingExpert.com * Heat pumps explained * Heat pump grants 💡 If there's a link you think we should include here, please send me a message!
A2A Heat Pump / Air Con
As with the 29/5/2025 changes I understand that it's possible to install air con / A2A heat pump without planning permission? We don't have radiators / gas at the property and air to water heat pump costs even after grant were just too high, hence I was thinking of getting A2A mostly for heating and casual 5-7 days a year…
MCs noise assessment
Hi does anyone know how to assess multiple barriers to calculate -db difference? The mcs calculator allows to pick a wall or fence but I have by between the heat pump and neighbour and I’d like to know if can combine or similar ? Also if needed can I include a third acoustic barrier around it and how could I factor the…
Anyone replaced central heating with air to air in bungalow?
As per title wondering if this is a good idea vs keeping central heating and heating a heat pump. Im thinking going immersion for hot water but the idea of being able to cool and heat rooms and dehumidify etc is quite appealing. That with cheaper cost cos bungalow with suspended timber floor means I don’t have to lift…
Ducted A2A heat pump
Hi all, does anyone have experience of ducted air to air heat pumps? I used to have a heat recovery ventilation system. It didn't work very well so I removed it, but the duct routes are still there which makes me wonder if this would be a good route to go down.
180L Cylinder
Just have British Gas come out for survey today. My space can only fit slim cylinder but BG only have 180L the biggest. He tried to convince me this should be enough for my 133m2 3 bed bungalow and 5 of us (3 young kids, but they will grow...). I think this is really marginal although we only have 2 bathrooms and it is…
Damaged Installation of ASHP
Good morning I recently had an Air source Heat Pump installed and the fins was damaged on completion. I notified the company and an operatives visited and tried to repair them. A small amount was not repaired due the excess dent, they explained this will not effect the performance or any warranty etc. I asked for this to…
ASHP heating problem
I have a Samsung ashp heating pump, no air in the rads to bleed, no error on the screen, although there is one in the logs. The system shows as both heating and water on, but no matter what I do, I cannot get any heating
Extending a property with an ASHP and underfloor heating
Hoping for some advice from those more knowledgeable, please Have viewed a property we really like this morning which was built about 3 years ago with an ASHP and underfloor heating, neither of which I know anything about. We would need to build on, either a ‘proper’ extension and/or a conservatory/sun room (with a proper…
BUS grant and NRPF
I was wondering whether the Boiler Upgrade scheme (BUS) comes under the category of No Recourse to Public Funds (NRPF) Or is this something one can make use of without violating the NRPF especially for those who are on Visa?.
My ASHP Journey in Bonnie Scotland.
We have our new ASHP - just three weeks now and I want to get the best from it. As it was part funded by a renewables grant we also had a phenomenal amount of additional insulation put in the attic. We have 2 zones - upstairs and downstairs. I have so far left the settings as put by the installer. 20 downstairs 18…
People Saying Heat Pumps are Rubbish - Are They?
I think most of the people I've spoken to have always read "something" about heat pumps being a bit rubbish for heating homes and having showers. But I rarely see this from people who have them installed, where the general view seems to be fairly positive. I understand it's a bit of a learning curve coming from a gas…
Heat Pump EPC bad
I'm viewing a property this week with a heat pump. Why would the EPC be so bad?? What information do I need to obtain from the vendor? It's an old cottage
Calculating how many kWh/day electricity a heat pump will consume (worst case)
Hi all, apologies for asking this here as well as in the Green and Ethical section but it's buried away in a thread mainly about something else. I'm trying to work out what battery capacity I'll need to run an ASHP on off peak electricity on a cold winter day. At the moment I have gas central heating. I have a 15 kWh…
What's your monthly SCOP
As there are a few of us with ASHPs installed, I thought I'd start a thread to compare monthly SCOPs so we can see how we are performing.I had my 12kW Samsung ASHP installed in June. It's been heating DHW over the summer and we are just now starting to get a feel for heating. It's an oversized unit, so we won't be able to…
The 1m boundary planning rule for ASHPs scrapped from 29/05/2025 in England and Wales
The government has passed legislation that comes into force on 29/5/2025 that amends existing legislation, removing the 1m boundary requirement for permitted development in England and Wales: https://www.legislation.gov.uk/uksi/2025/560/introduction/made The relevant part is Part 5 (3)(c), which states:…
Battery with heat pump but no solar - your thoughts
Hi all,We're just starting our retrofit journey and have had a home energy assessment which gives rough guide costs for each of the project elements. Obviously we are going for a fabric first approach, adding more insulation above the ceilings, reducing drafts where possible & replacing our ancient double glazing (at a…
Water tank placement
Hello My gas boiler is near end of life and I am looking at my options. I live in a 3 story 4 bed detached house with fairly new radiators that are about 2x the BTU that are needed in each room and the heating uses 15mm plastic pipes embedded in the studded walls. I have 3 bathrooms. I am looking into if a heat pump will…
Radiator Fans rather than upgraded Radiators with ASHP
SO we all know that with more efficient low flow temps for an ASHP it is likely that rads may be undersized. The correct option is of course to fit larger rads but I was wondering if Radiator Fans could be used instead as a short term solution? With rads it is easy to find the heat output at different flow rate but I can't…
3 way valves
Hi, I have an IVT HT+ E7. Last September (2024) I noticed the flow to the UFH was getting hot when the Heatpump was heating the DHW. I opened her up and saw the 'disk' on the 3 way valve just turning slowly. It wasn't stopping at one particular outlet, just kept turning. Not sure if this was a micro-switch problem inside…
Octopus Heat Pumps
Currently have gas central heating and hot water cylinder. Boiler is fairly efficient and works well, but is 16 years old. 4-bed detatched, reasonably well insulated house and about 6000kWh per annum gas usage. Considering replacing with heat pump and have contacted Octopus for a quote. They currently instal Daikin. Has…

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Heat pumps

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