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Proper way to vent a condensing forced air furnace?
I'm looking to buy a new.."used" home built around 1993. After checking the mechanicals out, I found the 80 plus furnace vented a different way than I seen on some other homes that I've visited in the past. First, the intake seems right,coming in from outside on the horizontal,and feeding the furnace, but the exhaust goes straight up and through the roof. Is this the right way to do this? It has a tee at the furnace to catch the condensate and a small barb with a hose to drain away the collected liquid.Plus there's no "jap cap" at the roof..just an open 2"pipe. Doesn't this need to be two street ells making a loop and looking downward to keep out the rain?
After calling my furnace tech buddy, he suggested to eliminate the fresh air intake and let it injest the room air, then use the old abandoned air intake and use it as an exhaust? Good or bad idea? Your input is appreciated..By the way, the furnace is a Temp Star brand, which I've never heard of..AND..It's piped to the roof with schedule 40 PVC..