sparcebag Posted July 22, 2008 Share Posted July 22, 2008 Furnass sizing for a 12-1300 Sq.Ft. house,Basement and 1/2 upstairs.Forget the window area just a general Idea of BTUs needed. THANKS Link to comment Share on other sites More sharing options...
sheephead2 Posted July 22, 2008 Share Posted July 22, 2008 65,000 to 80,000 Link to comment Share on other sites More sharing options...
MNice Posted July 22, 2008 Share Posted July 22, 2008 Way to many variables. Quality and quantity of insulation, windows, doors, exposure.....FYI, I have a 1100 sq.ft. split entry with a 40,000 BTU furnace. You really should do an accurate heat loss and I would suggest not to oversize. Link to comment Share on other sites More sharing options...
fastkaw Posted July 22, 2008 Share Posted July 22, 2008 As MNice saidWe need more info...In the old days you could wing it. But not at today gas price.And a 20 year investment. Link to comment Share on other sites More sharing options...
sparcebag Posted July 22, 2008 Author Share Posted July 22, 2008 Just ballparkin,I start the basement next year,I've drawn plans that will change this winter,havent sized windows yet.Got a great deal on a 55000 BTU 80% eff.Most work is myself so year after next framing & roofing,But I will have the winter to do mechanicals & water in the basement or oversized crawl space.Mnnice question, it is yet under 7 ft clearance basement considered crawlspace?? or not legal basement,All I want is storm shelter,mechanial Rm.Storage,And less taxes. Link to comment Share on other sites More sharing options...
MNice Posted July 22, 2008 Share Posted July 22, 2008 You're right, anything under 7' is defined as a crawl space. But, there is nothing that says you can't finish a crawl space for use as storage, ect. Link to comment Share on other sites More sharing options...
fastkaw Posted July 23, 2008 Share Posted July 23, 2008 Spend the money on a high efficiency furnace. 93%In (my) opinion don't buy a variable speed unit. The coast to re-pare is to highat this time.Im not saying they don't work well, just to costly to re-pare. It's a 20 year investment remember.Don't forget to plum in a drain in your so called crawl space. Link to comment Share on other sites More sharing options...
NAMASafetyDirector Posted July 24, 2008 Share Posted July 24, 2008 I'm with Fastkaw, spend the extra money and get yourself a high efficiency unit. 80,000 should do nicely for you. I would also consider installing an off-peak electric heater in the plenum at the same time. It gives you a little flexability on your heating options an can be installed to work in conjunction with the L.P. depending on your needs. Not to mention a discount on your electric bill. The other advantage to the high efficiency unit is you won't have to install a standard chimney pipe like you will on the 80% unit. The high efficiency units use a simple 2" PVC direct vent that you can run right out the side wall. As mentioned before you will need a drain to run the condensation line to dispose of the water. Good Luck! Link to comment Share on other sites More sharing options...
fishandshroom Posted July 25, 2008 Share Posted July 25, 2008 Ballparking BTUs (sq ft x 50) Nobody put a non eff in a home anymore without at least some sort of off peak back up I would go with an off peak plenum heater next choice would be a heat pump theres alot of options out there. Link to comment Share on other sites More sharing options...
sparcebag Posted July 25, 2008 Author Share Posted July 25, 2008 Thanks everyone I believe I'll go with new 93%, chimney required here for wood addon Link to comment Share on other sites More sharing options...
Recommended Posts