ASHP - current going rates? 10 February 2020 at 1:31PM in Green & ethical MoneySaving 22 replies 2.3K views

chamelion

Hi folks,
I'm looking into an ASHP for my home - 4 bed, 2 floor detached, approx 150 sq m. 
I've just received a quote which feels... WAY high. Anyone know of any trusted Essex based installers that could beat this?

• Single Mitsubishi Ecodan 8.5 heat pump
• FTC5 main controller
• wireless thermostat
• wi-fi adaptor
• commissioning
• Approx GBP 9,500 all in.

Already uncomfortable with just a single heat pump, but the price to me is ridiculous given the heat pump itself is only £3500 or so. I don't think £6000 is reasonable for a thermostat + controller + wifi dongle + install?!

chamelion

Anyone...?

mnbvcxz

I'm not sure quite what you are intending but I'm guessing a big outside fan box that then heats up your water for washing and heating?

Then you will claim RHI subsidy payments on it? 
Is that right?
Will your quote include a hot water cylinder or new radiators? Be carefull your house is suitable for this type of heating. 
I  see a similar question on another forum.  They suggest installers like a big markup knowing you will get RHI payments.. https://forum.buildhub.org.uk/topic/13103-air-source-heat-pump-quote/
Lots of other heat pump discussions there too. 
You could also try the moneysavinexpert heating forum which has long threads on heat pumps.

https://forums.moneysavingexpert.com/categories/lpg-heating-oil-solid-other-fuels

chamelion

this is great thank you

* Yes, will claim RHI subsidy
* Would be heating only via a split unit, no hot water or radiators

Just wondering what experience people have had with recent quotes - i'll check out buildhub!

Martyn1981

Oh, I also assumed air to water. That does sound expensive just for a multi-split air to air set up. I hope it's not being padded out because of the MCS/RHI issues.
I'll send a PM with a great site for supplying A/C units, which might give you a basis for costs on which to work from, but obviously i don't know how this might (or might not) work in conjunction with RHI rules.

chamelion

Martyn1981 said:

Oh, I also assumed air to water. That does sound expensive just for a multi-split air to air set up. I hope it's not being padded out because of the MCS/RHI issues.
I'll send a PM with a great site for supplying A/C units, which might give you a basis for costs on which to work from, but obviously i don't know how this might (or might not) work in conjunction with RHI rules.

Thanks Martyn!

Martyn1981

chamelion said:

Thanks Martyn!

Bit late, but can you claim RHI on air to air, I thought it had to be air to water?

chamelion

Martyn1981 said:

chamelion said:

Thanks Martyn!

Bit late, but can you claim RHI on air to air, I thought it had to be air to water?

According to RHI website, when i remove the water component, it still shows me an RHI payment (although lessened). 

mnbvcxz

chamelion said: According to RHI website, when i remove the water component, it still shows me an RHI payment (although lessened). 

Are you sure you are not confusing "Air source" with Air output. The air source heatpumps they mean use air as the source/input but the output is hot water, hence the need for a radiator to use the hot water in.

I would welcome to be proved wrong but I have not heard of anyone finding an air to air heat pump that was eligible for the RHI payments. I think they were left out because they did not wish to encourage air conditioning.

I agree £9000 for an air to air heat pump with a single outlet is about five to ten times as expensive as it should be. So much so that I wonder if you have been quoted for a standard air to water heat pump and things have been confused?

chamelion

mnbvcxz said:

chamelion said: According to RHI website, when i remove the water component, it still shows me an RHI payment (although lessened). 

Are you sure you are not confusing "Air source" with Air output. The air source heatpumps they mean use air as the source/input but the output is hot water, hence the need for a radiator to use the hot water in.

I would welcome to be proved wrong but I have not heard of anyone finding an air to air heat pump that was eligible for the RHI payments. I think they were left out because they did not wish to encourage air conditioning.

I agree £9000 for an air to air heat pump with a single outlet is about five to ten times as expensive as it should be. So much so that I wonder if you have been quoted for a standard air to water heat pump and things have been confused?

holy crap, you're right. 
https://energysavingtrust.org.uk/scotland/grants-loans/renewables/renewable-heat-incentive
"Air to air heat pumps, all log stoves, pellet stoves without back boilers and hybrid PVT are not supported by RHI."

How did not a single one of the quotes I receive make this clear?! They've even attached the RHI calculation PDF... deceptive?!

JKenH

I am confused. The Mitsubishi Ecodan 8.5 heat pump mentioned in the original post is air to water so is likely to be RHI eligible. 

Is the OP looking to heat the whole property with this unit? That is what it appears to be designed for using radiators, I.e. an alternative to a central heating system powered by a gas boiler.

Or is the OP looking for an air to air split unit to locally heat one room with an aircon style unit mounted on the wall and an outside heat exchanger just connected to the one internal unit? It is also possible to get one outside unit to drive several indoor units (multi split) but that is not what the Mitsubishi Ecodan 8.5 heat pump is designed for (as far as I am aware).