Air Source Heat Pumps

colwood54

hi this is my first post on this site so please bare with me.
im planning a single story extension (approx 5mx 6m) on my mid terrace house in south east. we currently have storage heaters on E7, for ages ive considered gch but now electicity seems to be getting cheaper and storage heaters lovely and quiet so want to stick with electric. i do have gas piped to house but currently capped off. does anyone have any suggestions on how to heat the new extension. im quite keen on ufh and wondered about an ashp. how would this work with the current storage heaters etc. sorry if i seem a little stupid but only just started to investigate options.

rhodod

how much do these roughly cost to install?

richardc1983

It depends on a number of factors but to have an air to air heat pump installation costs after you have bought the equipment could be about £500.

rhodod

i would be looking at air to water, if im reading it right. This would and could be set up to heat the radiators in my home at the minute?

richardc1983

rhodod wrote: »

i would be looking at air to water, if im reading it right. This would and could be set up to heat the radiators in my home at the minute?

Yes but you have to bear in mind the flow temps are lower so they dont get as hot as your gas boiler currently makes your radiators so it might be appropritate to get larger radiators that would take advantage of the lower flow temps.

See here:

http://forums.moneysavingexpert.com/showpost.html?p=30958513&postcount=206

albyota

rhodod wrote: »

i would be looking at air to water, if im reading it right. This would and could be set up to heat the radiators in my home at the minute?

Or check out the Sanyo ECO CO2 kit heats to 65\degrees without electrical backup and can be used with existing Rads, however quite expensive at the mo, around £8.6K for the 9kW system.

arty68

The sanyo is not MCS at the moment so as the dragons would say 'for that reason I'm out'

http://www.microgenerationcertification.org/Home+and+Business+Owners/Microgeneration+Products/Heat+Pumps/Air+Source+Heat+Pump

Also the sanyo is not more efficient may produce 65c but the cop will be low at that temp.

albyota

arty68 wrote: »

The sanyo is not MCS at the moment so as the dragons would say 'for that reason I'm out'

http://www.microgenerationcertification.org/Home+and+Business+Owners/Microgeneration+Products/Heat+Pumps/Air+Source+Heat+Pump

Also the sanyo is not more efficient may produce 65c but the cop will be low at that temp.

It is true the Sanyo kit is not on the MCS list but will be from August we are being told, so will therefore be eligable for the RHI.

The 9kW system has a COP of 2.2 at minus 5 with an output of 9.39kW and an input of 4.3 kW, water flow 65 return 35

The Sanyo ECO uses CO2 NOT R410A refrigerant gas, CO2 can run at much greater pressures hence higher temps.

clc5

I was about to spend £1700 replacing my G rated combi gas boiler but after reading about the upcoming Renewable Heat Incentive scheme I'm thinking an Air Source Heat Pump providing heating and hot water might be a better investment. My well insulated 3 bed semi has 10 radiators. I don’t have a water tank. Can anyone give me a rough idea of what I would expect to pay for a decent quality ASHP system? Also, what about maintenance costs? And, apologies if this seems a daft question, do I have to get new pipe work and radiators and all the disruption that entails? Any advice would be appreciated.

rhodod

richardc1983 wrote: »

Yes but you have to bear in mind the flow temps are lower so they dont get as hot as your gas boiler currently makes your radiators so it might be appropritate to get larger radiators that would take advantage of the lower flow temps.

See here:

http://forums.moneysavingexpert.com/showpost.html?p=30958513&postcount=206

i dont have a gas boiler, i currently have a coal fire with a back boiler heating my radiators.