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Old 04-12-2008, 06:22 AM
LI Sound Grunt
Senior MemberCaptains Club Member
Join Date: Jun 2001
Location: CT
Posts: 18,361
Default RE: Converting Oil Furnace to Gas

Whoever does your install should do a heat loss calc on you house to see what is actually needed. We find that the vast majority of boilers and furnaces are oversized by a large amount. This is a huge fuel waster.

Hey you sound like you know what you are talking about..... Can't an oversized unit be made more efficient by putting in a smaller nozzle and thus increasing the time of heat transfer and lowering the stack temperature? Also, if the unit is "too small" is the only downside that the house will take longer to heat up (and myabe never make it on the coldest day)? - or is the too small unit inherently less efficient? Another question, my son had a hot ait gas unit with airconditioning. For safety reasons alone (he has propane) he is considering changing to oil - Could an Oil/Hot air system still use the same air conditioning system?
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