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Uli

02:57PM | 11/18/99
Member Since: 11/17/99
1 lifetime posts
Bvhvac
I want to install a radiant floor heating system for the 1st floor of an addition of my house (approx. 700 SQF). The installation should be done from underneath (crawlspace) by putting the heating elements between the joists. I am not sure if I should go for an electric or a hydronic system. What are the pros and cons ? How efficient is an electronic system for that size ?

I don't necessarily have to shut down the current forced air system completely, but I would like to have more than just a "floor warming" system.

All input is greatly appreciated.

nmottet

09:38AM | 03/11/08
Member Since: 03/10/08
2 lifetime posts
Electric floor heating is most likely the right solution to warm a 700 sq ft area (only about 400-600 sq ft will actually be heated). Hydronic systems are typically used for whole-house systems, although you may want to get a quote from a hydronic manufacturer just to compare (700 sqft is still a large size space and you may find hydronic systems to be a competitive solution, even after factoring in the higher installation costs of a hydronic system).

To select an electric floor heating optionn that will work as a primary heat source, make sure you choose a system rated at 15 watts per square foot. Some systems are only rated at 10 or 12 watts per square foot.

Our Tempzone systems (http://www.WarmlyYours.com) are rated at 15 watts.

A 15 watts system will work very well as a heating solution, although you need to make sure that you're not installing it over a cold cement slab that will suck the heat down. Additional insulation may be needed, and you should talk to your floor heating manufacturer about specifics.

WarmlyYours provides heat loss calculations and will tell you how many square feet need to be heated for primary heat.

Hope this helps,

Nicolas

WarmlyYours
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