UFH

[dboden]

Hi, I am thinking of putting UFH down after we have fitted new kitchen.
Does anybody know, or have any experience,
is it expensive to run? we just want to take the chill off tiles.

Thanks

[Dave]

If you put down insulation boards first then they can cut the running cost of the ufh...with out them then it can be expensive to run....plus the insulation boards give you a faster heat up time........the average thickness for best results is 10mm to 12mm......

[CTD Marie]

At CTD we work with Devi on underfloor heating it is electric and mat style.

Running cost are roughly 0.5p to 0.75p a square metre an hour.

If you would like more info i could contact your nearest CTD branch and get them to give you a ring??

Cheers.

[wetdec]

At CTD we work with Devi on underfloor heating it is electric and mat style.

Running cost are roughly 0.5p to 0.75p a square metre an hour.

If you would like more info i could contact your nearest CTD branch and get them to give you a ring??

Cheers.

What wattage is that Marie ?


tiler


..

[Dave]

If it's the concrete one mr T.......it will be 150w per sqr mtr......

The running cost of a cable or mat is dependant upon its rating/output and is based on the units of electricity consumed.

A unit of electricity is 1000watts (1KW) for 1hour at the unit cost of electricity
ie 1500w x Ihr x 6.5p/unit = 9.75p/hr.
operated on ‘off peak’ this would be 1500w x 1hr x 3p/unit =4.5p/hr

The devimat warm floor system costs approximately 0.5p per hour, per m2 to run.

[CTD Marie]

Wetdec i'm finding out more information as we speak as soon as i know i will post it on here.

[dboden]

So... a 150w output will be cheaper to run than 200w?

[Dan]

So... a 150w output will be cheaper to run than 200w?

It certainly would be.

100W/m2 even cheaper.

Remember that if you had 200w/m2 though your heat-up time would be reduced, therefore it wouldn't be on as much as a 100W/m2 system during that time.

With insulation I'd go for 100W/m for taking the chill off the tile.

[wetdec]

Thanks you both for that.

Its a job to know when asked sometimes especially with the differing wattages.

Companies are recomending

100w for house
150 / 200w for conservatories

They are sufficient then ??

[Dan]

Thanks you both for that.

Its a job to know when asked sometimes especially with the differing wattages.

Companies are recomending

100w for house
150 / 200w for conservatories

They are sufficient then ??

As a general rule of thumb I used to say 100W/m for wood and laminates, 150 for interior of the house, 200 for conservatories and out-buildings.
I'd recommend insulation with them all, but if you're not going for insulation then perhaps use the next heating output up from the one you were first thinking.

[Spirit]

With electric UFCH, it is worth remembering that the mat types must not be covered with rugs or furniture which could stop the heat escaping. The covered area could overheat and damage the element. Because of this risk, particularly in living areas, such as lounges and conservatories, I recommend that the customer has a self regulating cable type of heating.

The cable that I use self regulates to 29deg therefore cannot create hotspots.

[CTD Marie]

For the people who were asking about running cost.

I spoke to someone at Devi and they have ionformed me that for 100-150 wattage you are looking at about 0.6p to 0.7p per square metre per hour.

[365drills]

I've lost the maths! My bathroom floor is a small footprint of 2 x square meters. So If I have it installed and run it for three hours a day from 6am to 9am then the maths is..

2x 0.75p for the square meters (total 1.5p)
3hours x 1.5p = 4.5p per day
4.5p = 31.5p per week - £1.26 per month and £15 per year

Is that right ? (or £15 + 40% energy rise this winter = £21 per year)

[dboden]

Sounds about right to me

[dboden]

It sounds like an expensive way to keep the chill off your feet, Apart from warm slippers, does anybody know of any other options?

[smurf21]

carpet