ncountry wrote:Any more results or further progress on the hot air furnace?
Yep ,The final designs are completed and submitted for the metal parts. Now they will be in line for UL testing . They perform better than I had hoped. I can't wait to get official efficiency #s . If they are what I am guessing they are worth all the welding that goes into them . We are using less coal than last year in our drafty old shop and we are able to keep it warmer even though we have had record cold temps this year. Thanks, Dave