Size of furnance?


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Old 04-19-13, 08:06 AM
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Size of furnance?

Hi, All
I have an older house (1960's) that is 850 sq ft with 1 floor & partly finished basement. I have put new windows, 1-3/4" foam on outside, & some extra insulation in attic. The furnance is 60,000 btu. I live in eastern Ontario & possible to see -35C. Do I still need 60,000 or would I be better with somethin smaller?? Oh, Natural gas, if it makes a differance.. Thanks Roger
 
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Old 04-20-13, 06:41 AM
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A manual J load calculation needs to be done in order to answer your question. This is something you can do by purchasing the software.... or you can call a HVAC professional to do it for you.
 
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Old 04-20-13, 08:13 AM
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Thanks, I have no idea what that is,, Sorry, but is a "J load" a math thing (like HP & Torque) with a formula?? I've never heard of it, but would be interested to learn what it is,,, Roger
OK I Googled it & your right, It's not just a numbers thing I can do,, Time to call someone Thanks,, Roger
 
 

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