Underfloor Running Costs

[Chris_32]

Thanks for your help everyone, I will look into the wet system now as it seems much more economical and easier to install than I thought.

 

[Chris_32]

That then makes you have to be a plumber...

I thought the same thing

 

[Time's Ran Out]

These new 'smart meters' show how much the electric UFH costs to run. We did a small kitchen end of last year with 3sq mts of Ufh and when I put it on to test it cost almost 10p an hour!
I was always under the impression it was 1/2p per metre per hour i.e. 3sq mts = 1 & 1/2 p per hour . Doesn't seem much 10sq mts = 5p for 6 hours = 30p x 30 days = £9.00 a month = £108 a year for 1 floor !!
Do careful use is needed.

 

[J Sid]

yes John, but it's not on the 24 hours a day. Correctly set up it kicks in and out to maintain the required temp. Higher morning and evening when at home and lower at night when not needed, as you well know 😉

 

[Time's Ran Out]

Somewhere in my calculations I based it on 6 hours use a day.

 

[Chris_32]

20m2 can easily be done on a single circuit pump (if it's in the same room) you probably wouldn't even need a manifold. If you have a drawing of your extension I would be happy to do a pipe layout and a quote for you.

Hi David. I have some drawings of existing heating layout and proposed extension that I can email you over for a quote if thats ok. What is your email address?

 

[Dan]

Or contact our forum sponsor @Uheat - Jake

That was a bit naughty of David from UFH Store.

 

[Myatix]

Hi Chris, We thought about having electrical underfloor heating mats put in our extension but after we spoke to a consultant it made a lot of sense to use wet underfloor heating. There is a lot more to it than just how many watts the mat draws. You also need to take into consideration insulation and heat loss calculations. IE: The type and number of windows you have in the house the thickness of the walls etc etc... All of this will have a huge impact on your electricity bill.
Also the chances of an electrical heat mat going wrong over a 10 year period is alot greater than a wet underfloor heating system having issues and wet underfloor heating systems tend to be a lot easier to fix. (Not very easy to pull up an electrical mat and change it if it short circuits or malfunctions.)
Most water based underfloor heating systems have a 25 to 50 year guarantee on pipe so definitely something to consider.

Good luck with the project! 🙂

 

[Dan]

Hi Chris, We thought about having electrical underfloor heating mats put in our extension but after we spoke to a consultant it made a lot of sense to use wet underfloor heating. There is a lot more to it than just how many watts the mat draws. You also need to take into consideration insulation and heat loss calculations. IE: The type and number of windows you have in the house the thickness of the walls etc etc... All of this will have a huge impact on your electricity bill.
Also the chances of an electrical heat mat going wrong over a 10 year period is alot greater than a wet underfloor heating system having issues and wet underfloor heating systems tend to be a lot easier to fix. (Not very easy to pull up an electrical mat and change it if it short circuits or malfunctions.)
Most water based underfloor heating systems have a 25 to 50 year guarantee on pipe so definitely something to consider.
Good luck with the project! 🙂

And your connection with them is?

 

[Myatix]

Hi Dan,

Sorry I don't know what you mean? We had our underfloor heating installed in 2016. I was just trying to point Chris to someone we found to be very helpful in advising us when we installed our underfloor heating. No one here seems to have mentioned that "heat loss calculations" are the key to calculating and installing an effective underfloor heating system.