How to heat my Huse

renex

LPG_Price_and_Advice wrote: »

Hi if you are looking at LPG, which I would consider as it ticks alot of your boxes; CO2, clean etc etc it is best to try and control the pricing for as long as possible, suppliers will always try to tempt you with a hot price to win your business. Installation is usually FOC or minimal cost although you will need to pick up any building works.
Don’t get to worked up over the pence per litre (ppl) price look at the agreement as a whole e.g. over the two years and work out what it will cost you. Also bear in mind free gas can drastically change your average ppl price over the term of the agreement. I work as a consultant in the field we offer a free of charge service going to market and negotiating on your behalf. Take a look, lpgpriceandadvice.co.uk

thanks for the advice but im feeling more inclined towards a renewable source

lovesgshp

renex wrote: »

thanks for the advice but im feeling more inclined towards a renewable source

Forget LPG. I have one client who changed from that to a retrofit GSHP system. He reckons he has saved thousands of euro over the few years since the change.

Can you not go for underfloor heating, or is it too late at this stage of build?

Are you looking at a GSHP, or a ASHP?

Cardew

renex wrote: »

i spoke to my architect and they said that the rads aren't huge, apparently their not much bigger then normal ones??

If you are having a house built, and are employing an architect, then he should advise you on all your questions.


The crucial factor is the standard of insulation and the heat loss from each room. That will determine the size of the radiator. Bear in mind that with a heat pump you want the room to be warm with a water temperature in the radiators at 30C to 40C - with oil CH it could be 80C


Scores of people have heat pumps on this forum, but they cannot tell you how much you will save.


A well installed heat pump in a new house should achieve a COP of around 3.0. This means for every kWh(unit) of electricity you could get 3 kWh of heat output. So with electricity at 12p/kWh you pay effectively 4p/kWh.

renex

lovesgshp wrote: »

Forget LPG. I have one client who changed from that to a retrofit GSHP system. He reckons he has saved thousands of euro over the few years since the change.

Can you not go for underfloor heating, or is it too late at this stage of build?

Are you looking at a GSHP, or a ASHP?

i will probably go for underfloor as i am still at the planning stage, also i've been informed that if i got a heat pump it would be designed to run at 45 degrees which sounds fine.

renex

Cardew wrote: »

If you are having a house built, and are employing an architect, then he should advise you on all your questions.


The crucial factor is the standard of insulation and the heat loss from each room. That will determine the size of the radiator. Bear in mind that with a heat pump you want the room to be warm with a water temperature in the radiators at 30C to 40C - with oil CH it could be 80C


Scores of people have heat pumps on this forum, but they cannot tell you how much you will save.


A well installed heat pump in a new house should achieve a COP of around 3.0. This means for every kWh(unit) of electricity you could get 3 kWh of heat output. So with electricity at 12p/kWh you pay effectively 4p/kWh.

if you dont mind my enquiry do you happen to work within the energy sector?

lovesgshp

renex wrote: »

i will probably go for underfloor as i am still at the planning stage, also i've been informed that if i got a heat pump it would be designed to run at 45 degrees which sounds fine.

Normal underfloor should operate @ circa 35C at 0C outside,(GSHP), rising higher as outside temps get lower, but the range if pretty much graduated.
I cannot see why the pump would be designed to run @ 45C, as that is quite low.

Smiley_Dan

renex wrote: »

i spoke to my architect and they said that the rads aren't huge, apparently their not much bigger then normal ones??

What does your design stage SAP say with regards space heating requirement? Also how many m² is the house?

renex

im am unsure on the sap report, however i believe that the house will be around 300m2

renex

lovesgshp wrote: »

Normal underfloor should operate @ circa 35C at 0C outside,(GSHP), rising higher as outside temps get lower, but the range if pretty much graduated.
I cannot see why the pump would be designed to run @ 45C, as that is quite low.

45 degrees is quite hot the average bath is about 38/39 degrees

lovesgshp

300 sq mtrs, well insulated with UFH, maximum 14Kw output pump, but maybe down to a 11Kw.