LMSC Have you got them installed in every room ? I don’t see this as replacing the boiler though. Thx mate.
It’s very situational, Dave has a bungalow, so many solutions will work that might not work so well in a large property. When/if they ban gas boilers, I will be going down a similar route for heating…with 2 multisplit units across 8 -10 internal cassettes. This is even though there is no 6K grant for air to air systems!
This is because a heat pump air to water system would be hugely expensive for my property. I would have to have every radiator and all the microbore replaced with normal pipe. I have at least 12 rads to be replaced with much larger ones…the whole hot water side to be dealt with. I estimated a cost well in excess of 26K, which doesn’t include redecorating and flooring costs, or most of the hot water costs/shower replacement etc..! All the pipework is either under the floor or in the walls. So even with a grant, the cost is a ludicrous 20K+ for me! An air to air system would cost about 12K with no grant!
There is some governmental wrong thinking about properties that are not new build specifically for air to water heat pumps and politicians have some one dimensional thinking which allows us to get ripped off by the heat pump manufacturers. Why is a air to water heat pump 10kW Monoblock from 10K to 12K when a 10kW Multisplit with 5 cassettes can be purchased for 3K…one has to ask what’s going on. As we know anything where a grant is involved, we as consumers never see the money (it goes into other pockets)…It was the same with the electric car grant.
This winter rather than heat the whole house, I used the inverter aircon in heat mode in the loft room to keep warm in the evenings…way cheaper than what central heating the house would have cost. To be cold, my gas central heating would have cost me £8 per day, so be comfortable £10 per day, frost protection only cost me £4.5 per day which maintained the rest of the house at about 14C. 8 hours of heating the very large loft room nice and warm would only cost about 90p a day max.