What Would a Pro Do ? - High Efficiency Change Out in Middle Of Winter w/Snow on the Roof ?
Please lend me your learned opinions. My furnace is dying - the furnace guy who was performing a tuneup showed me the "piccolo tubes" for the forced air furnace which no longer had holes - but were corroded into long slots - IE the burner is shot .. So it is new furnace time ..Problem is - it is a question between a high efficiency furnace and an 80% furnace that can use the existing 4" flue-pipe.
It is the middle of winter and there is snow on the roof. The house is a 1 story rambler with a 2-12 low pitch roof with torch-down rolled roofing .. The furnace is located in the garage and the roof sheeting is literally 8 feet above the furnace - where the hole for the plastic pipe would be 6" from the roof crown/ridge. The furnace guy said he cant run the plastic out the sidewall of the garage because of the soffet vent that extends along the side of the house - extending across the garage and the attick crawl space above the homes living space. IE Didnt want to put the exhaust vent for the furnace near the attic vent - and the house has a 1 1/2 over hang which would trap the gasses or something ,,.
QUESTION: The furnace guy said he was concerned about "breaching" a roof in the middle of winter because no adhesives or calks would cure unless it was atleast 40 degrees out. What do you think is prudent ? He said he could do a temporary vent seal thing as best he could - but coundlnt guarantee it until he could finish the seal job when things warm up. The problem is that this is torch down - a rolled asphalt product and not 3 tab - it is like poking a hole in a membrane - rather than tiered roofing . Any ideas would be appreciated - it is more for my expectations as to what I should expect given these facts ..
On the other hand I could have him put in an 80& 2 stage & be done with it ,,. but he said the $$ of gas will rise & thus the value of the high efficiency .. regardless of the interveening hassle .. any ideas would be appreciated ! Regards,