furnace installation problem?
We just had our newÃ£ÂÂAC+furnace installed last week and it works fine. However, our plumber checked our attic today, and he pointed that the vent pipe on furnace, which sends carbon monoxide outside the house, had about 8 screws on it for connection. He said this is not a good thing, since it could lead to potential leakage of carbon monoxide. He also showed us the vent pipe on our older furnace(we have 2), and there was no screw on it!
Is my plumber correct? Did the installers do a lousy job?