Anyone with uf heating

Builderwoman!

Hi

We have underfloor heating from combined solar and wpb in all tiled areas. We have a few questions from others who have uf:

We were wondering what temp most other uf users who use the house all day would have their temps set at. Does your underfloor feel warm to the touch everywhere?

What kind of stats or controls are you using?

Looking forward to hearing from you.

Thanks

jones085

The water from the wpb/solar should be blended down to something between 35-45 degrees flow into the under floor. The living areas will tend to be set at somewhere between 18-22 degrees on the room stat. depending person to person.

The floor will feel colder than the air temp. Even when the underfloor is on.
That is just they way it feels it will in fact be around 25 degrees

The best under floor systems are those set to around 19-20 degrees. With flow temps of around 35-40. You cant tell if the heating is on or off, the house just feels nice.

Regards

Simon

ardara1

The house should FEEL NICE without the underfloor heating having to be on constantly 24/7 - enough heat form solar/lighting and cooking is enough to heat a properly insulated house.

2 days ago it was 12 oC at 6.30 in the morning - there was a frost that night - how can UFH respond to that type of fluctuation?

Builder woman - are you disappointed in the performance of the PANELS/PELLETS/UFH?

Builderwoman!

Thanks Guys. No we are not disappointed (in fact the solar is brill, and wpb is a really good choice) at all but the plumber is finishing up and we feel that uf isn't working well in a couple of areas. We have the temp on master control set at 18 deg (was much higher but everyone who came in complained of the heat) and yet some of the room floors are reading 21 deg when we measure their temp independently. We just want to ensure before he leaves that he has everything right. We feel it's working really well in general but want to ensure that the controls are working too.

jones085

ardara1 wrote:

The house should FEEL NICE without the underfloor heating having to be on constantly 24/7 - enough heat form solar/lighting and cooking is enough to heat a properly insulated house.

2 days ago it was 12 oC at 6.30 in the morning - there was a frost that night - how can UFH respond to that type of fluctuation?

Builder woman - are you disappointed in the performance of the PANELS/PELLETS/UFH?

Its one of the big questions in underfloor. Your right the heating should'nt be on 24/7. How ever a properly insulated house will keep the heat out as well. Its all about delta T's and u values. The idea of the insulation is to stop the fluctuations in temp. The temp may of plumbated outside for a short while but heating or no heating that effect should not be felt. (it's the avarage temp over a period that will eventually bring the house down or up in temp.

The big problem is with areas of high solar gain. The best advice generally is in area's of high solar gain lees is more when it comes to screed thicknesses. Giving the floor more responsivness. It's now possible to achive screed depths of 35mm to whatever you fancy but normally no more than 75mm

Builderwoman!

I agree with Jones re solar gain. In rooms to the front some days the uf at a realatively low 17 deg and a sunny day will give you fanastic heat. North facing rooms are not so good at low temps.