First house, want to retrofit Underfloor Heating. Many Questions

[OnlyHumanHere]

without looking at the survey report I've no idea, apologies.

 

[telectrix]

that boiler will cost approx. £1.80 per hour running at 12kW. assuming it's on only 40% of the time ( which is optimistic in winter) that equates to about £120 per week.

 

[Midwest]

OP I don't know where your getting your briefing from about wet UFH. The concept, as far as I'm aware, is constant heating of the room temperature from the floor up, as opposed to the convection nature of wall hung rads. It not a quick heat up and cool down. The UFH pipes are installed to heat up the screed floor, to act as the heat source, which is not instant. The plastic pipes are not designed to heat the room themselves. Without insulation below the installed pipes, you will be doing exactly what say you don't want to happen, heat the ground below.

 

[sean_ork]

without looking at the survey report I've no idea, apologies.

I'm guessing this is the first house you've purchased ?

The EPC rating is a fairly vital piece of information, it should help guide you to where you need to spend money first.

Forget fancy remote control heating controls, forget electric boilers, forget those dangerous heat mats - spend your money on the fabric of the house first.

Please dig out your house buyers report and let us know its rating.

 

[davesparks]

that boiler will cost approx. £1.80 per hour running at 12kW. assuming it's on only 40% of the time ( which is optimistic in winter) that equates to about £120 per week.

But with a decent solid mass of screed around the ufh pipes and good insulation under them he'll get a pretty efficient system that only the water heated up to about 40 degrees......
.....
Oh no, wait a minute,
....
He's using magical heat reflecting snake oil! Forget that thought then.

 

[sean_ork]

ignore that comment, I'm an idiot. Just spoke to the electric heating company, they've recommended a comet 12kw boiler with 180L indirect cylinder.

looks like it'll do the job Indirect Cylinder Packages - The Electric Heating Company

What process did they use to calculate the energy requirement for your house ?

I'm guessing the wetfingerinair approach.

 

[davesparks]

What process did they use to calculate the energy requirement for your house ?

I'm guessing the wetfingerinair approach.

There are actually two really simple equations you can use for doing those calculations.
1: monthly sales target - units sold this month = boiler required
Or
2: what have we got an overstock of in the warehouse which needs shifting + know it all customer = kerching

 

[UNG]

I found this link quite interesting while I was looking at comparison costs of fuels used for domestic heating

 

[sean_ork]

I found this link quite interesting while I was looking at comparison costs of fuels used for domestic heating

Find a few links comparing the price of mains gas v LPG v electric and heating oil (sec28)

I'd bet he'll be wanting an oil boiler .....

 

[UNG]

We are up to page 6 of thread which parts haven't you understood so far, your specialist has told you that you don't need insulation and you came back with that typical military attitude telling us that we were all wrong

With your response I feel it is time this thread was closed as you seem to be having some / a lot of difficulty understanding what has been posted to date

Can I respectfully suggest that you take your research and questions somewhere else so that we don't have to waste our time and read your verbal diarrhoea

 

[Darkwood]

If members have no constructive input to post without resorting to baiting and mockery then do not post, you all know the rules here.

If it carries on then thread will be closed and the offending members maybe findng themselves on a break.

 

[sean_ork]

This article was written based on early 2015 costs, sec28 is now 30 % cheaper.

OFTEC - Oil now cheaper than mains gas for home heating

 

[Darkwood]

Thread now closed on request of the OP.