Radiant Heating in floor

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Posted by: from Edmonton
6/9/2011 at 12:10:12 AM

We are in the process of deciding if we should go with forced air heating verse radiant heating in between the floor joists...for a cabin that we foresee in living in year round.

Question about the difficulty in the actual installation of the plex piping...things to watch out for... the number of zones one should have for a two story 1500 sq. foot cabin.

Dealing with non potable water has promoted the thought of using two hot water tanks , one for tap water and the second for the heating of the cabin... in particular if it would be possible to maintain the house heating tank with a combination of city water and gychol in a closed system? What size of tanks would be advisable to get? Should they be electric or gas? Any maintenance to the system required?

It was suggested to me that I should be considering the use of a boiler verses hot water tanks... Pro's and Con's... I have heard repairs to a boiler system can be costly besides a high cost factor initially to but the system in.

It was suggested to me that I need still need to have an air circulation system installed to help move the air around? Is this so...? Meaning duct work...? or is there an alternative?

If there are any other items that I should consider... I would appreciate your thoughts.

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Date/Time6/16/2011 at 12:35:26 PM


I reccomend you use a qualified HVAC expert to design and install a proper system for you. There is no substitute for experience, smarts, and obtaining a solid warranty so you can rest easy.

I have a good sub-trade if you need one.


Heat rises, so heating the upstairs is not as much of a proble as cooling. Air circulation is required to pull the hot air off the cieling on the second floor and keep the condensation off the windows in winter and distribute the temperature evenly through out your home.

Consider how you will humidify the air during the winter.

How to cool the home in summer.



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