new build heating

Lewis · Jul 27, 2016

so in the process of planning regs and my architect wants to know what type of heating we want to put in.
what's the most reliable cost effective heating?

was thinking underfloor heating downstairs (ground source heat pump?)

small log burner in living room.

house is only 100sqm and heating requirement should be extremely low with all the insulation needed nowadays.

ffukedfarmer · Jul 27, 2016

We are in the same situation.

From the little I know I think the payback from renewables such as ground source / air source is too long.

I'm thinking underfloor heating down stairs, a log burner and oil.

Adeptandy · Jul 27, 2016

Definitely go underfloor heating, flow temps are a lot lower therefore cheaper to run as water has poor thermal conductivity. depending on your area you might be stuck on GSHP or ASHP as the planners seem to be looking for that nowadays around here on a new build. If not, I'd go oil if no mains gas close.

Doing it for the kids · Jul 27, 2016

^^^ spot on.

UF heating for sure, rads upstairs. You may need to over size them if using AS/GSHP.

Get an independent heating engineer consultant to give you the pros and cons of all systems, some will sell you something not big enough for the job

J B · Jul 27, 2016

New build on a farm (?)
Plenty of fields nearby (?) = good place for ground source pipes
Newbuild can get the vat back, cheaper than retrospective fit.
The price of oil may not be low for ever!

Food for thought?

ffukedfarmer · Jul 27, 2016

J B said:
New build on a farm (?)
Plenty of fields nearby (?) = good place for ground source pipes
Newbuild can get the vat back, cheaper than retrospective fit.
The price of oil may not be low for ever!

Food for thought?

True, who knows where oil will be in 10 + years time.

I have a digger and 6 acres immediately in front of the proposed house so it will be very easy to lay the pipe. I'm not sure of the cost of the rest of the kit though.

joe soapy · Jul 27, 2016

Also look at heat recovery systems, Local eco house pulls air from under roof and ceilings
back to a heat exchanger room where all his gadgets are, recovers heat from outgoing waste water too. Has a big tank with several coils in at various heights according to temp of the heat source.
Biggish house, and he was complaining about a leccy bill of nearly £2 for the year

Adeptandy · Jul 27, 2016

On plus side for Oil, if your isolated as most of Farms are, you'll struggle to run either GSHP or ASHP off a generator, only a small one needed to run an oil fired system

Doing it for the kids · Jul 27, 2016

If you don't want to spend the money on heating spend it on house design, aspect, insulation etc.

Plenty of folk can live in their new houses all year round with little more than a candle needed to keep them warm on only the coldest days

jamesy · Jul 27, 2016

You can have ufh upstairs too, just installing these at the mo

ImageUploadedByThe Farming Forum1469658906.616309.jpg

Badshot · Jul 28, 2016

If you've solar panels on farm and could use the electricity, air source for sure.

holwellcourtfarm · Jul 28, 2016

We went whole house under floor heating 12 years ago. Great to live with, not expensive and a reasonable DIY install (kit from Nu-Heat). If doing it again we'd have at least 1 radiator for drying clothes in winter (not quite the same laying them on the floor to dry

). With ufh you do just need to learn to use it properly. You can't come in to a cold house and "whack the heating up". It takes 24 hours to respond so you have to pre-empt the weather. Once you learn that it's great.

Ground source heat pump won't work here - low water table and deep sand (low thermal conductivity)..

As said above, some friends built their house 6 years ago and exceeded the building regs on insulation. They have only used their boiler to run the heating about 5 days since then, their log burner in the lounge heats the whole house otherwise.

Clive · Jul 28, 2016

Underfloor is an absolute no brainer, did it in my last house and doing it i the one I'm building now

cheap to run and much nicer, more even heat

saves fortunes on slippers !

as above - double the insulation spec - best payback you can get

Clive · Jul 28, 2016

joe soapy said:
Also look at heat recovery systems, Local eco house pulls air from under roof and ceilings
back to a heat exchanger room where all his gadgets are, recovers heat from outgoing waste water too. Has a big tank with several coils in at various heights according to temp of the heat source.
Biggish house, and he was complaining about a leccy bill of nearly £2 for the year

just had one put in a barn conversion - works the other way as well and help keep things cool when its warms

not cheap though, not sure I would do it again

Mur Huwcun · Jul 28, 2016

Any one on here running UFH off a woodburner with thermal store? Considering a largish thermal store with woodburner and range cooker/boiler as backup with the provisions fitted for solar later on. Will be in a stone build house with and extra 50% extension built onto, extension will be insulated to the max, rest of house only has loft insulation.

SilliamWhale · Jul 28, 2016

Clive said:
Underfloor is an absolute no brainer, did it in my last house and doing it i the one I'm building now

cheap to run and much nicer, more even heat

saves fortunes on slippers !

as above - double the insulation spec - best payback you can get

Clive how much thickness insulation are you using? And are you running off oil boiler?

Clive · Jul 28, 2016

SilliamWhale said:
Clive how much thickness insulation are you using? And are you running off oil boiler?

As the new place is extension / modernisation thickness varies but 200mm of kingspan at thickest (new bits and roofs) 100mm beneath all floors down to 50mm on old walls

We are on mains gas - x2 boilers and megaflows

Bill the Bass · Jul 28, 2016

Insulation is the key. Underfloor heating is good but not essential and as has been said takes getting used to, disadvantages of underfloor heating are leaks if it's a wet system and also floor finish is limited a little - it is very pleasant once you are used to it though.

I have a 9kw wood burner located in middle of the house and some towel rails in the bathrooms and utility run off electric (solar panels on shed roof) and a heat recovery system to shift heat round the house, house has 170mm of insulation.

milkloss · Jul 28, 2016

Don't put ufh under carpet. We put rads upstairs as the other half wanted thick carpets. Put an oil burner outside as they are reliable and cheap to run if oil gets that pricey you can rework that part later.

Only thing I regret doing is putting the hot water tank in the basement as this meant we couldn't use the log burner to do the hot water and heating. You can get 12v battery backup water pumps but they don't satisfy regs or didn't for us.

We also have one room on the ground floor that is 6 inches lower than the rest and this is the coldest and should have specced rads as well as ufh for this room (it's round with 75% external wall) as being a tv room it has carpet.

SilliamWhale · Jul 28, 2016

milkloss said:
Don't put ufh under carpet. We put rads upstairs as the other half wanted thick carpets. Put an oil burner outside as they are reliable and cheap to run if oil gets that pricey you can rework that part later.

Only thing I regret doing is putting the hot water tank in the basement as this meant we couldn't use the log burner to do the hot water and heating. You can get 12v battery backup water pumps but they don't satisfy regs or didn't for us.

We also have one room on the ground floor that is 6 inches lower than the rest and this is the coldest and should have specced rads as well as ufh for this room (it's round with 75% external wall) as being a tv room it has carpet.

What do you mean put an oil burner outside? ie you mean fit an external boiler rather than inside the dwelling?

How is your round room so much colder if it also has uf heating in it? Is it not zoned so it can be a bit warmer there?

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