If you aren't venting the second pipe outside then the system is definitely installed incorrectly. That is almost the entire point of a high efficiency furnace
Appreciate the content, Reuben. It certainly is allowed, but one would need to also consider the pressures in the combustion appliance zone. Having any other non-direct vented appliances in the zone, including clothes dryers, could cause a backdraft situation. Though allowed, I think it is strongly advised to direct vent a high efficiency furnace because it is easy and also very few people/installers foresee the problems that can that can occur with a depressurized CAZ. Are you seeing combustion air ducts in these situations? I typically don’t.
Such as my house where my air return seems to not do it's job and when the furnace is on you can feel the air rushing under the basement door. We only have the exhaust vented outside, the combustion air just comes from the basement, they didn't even put the elbow in. It seems that they cheaped out on the HVAC install when they built this house.
Great video, learned a ton here.
Thank you sir
Good to know!
If you aren't venting the second pipe outside then the system is definitely installed incorrectly. That is almost the entire point of a high efficiency furnace
If the intake is from something like a garage, is that a direct or non-direct vent system?
Appreciate the content, Reuben. It certainly is allowed, but one would need to also consider the pressures in the combustion appliance zone. Having any other non-direct vented appliances in the zone, including clothes dryers, could cause a backdraft situation. Though allowed, I think it is strongly advised to direct vent a high efficiency furnace because it is easy and also very few people/installers foresee the problems that can
that can occur with a depressurized CAZ. Are you seeing combustion air ducts in these situations? I typically don’t.
Yes, it's quite unusual to *not* have a combustion air duct coming into the mechanical room in a Minnesota home.
Such as my house where my air return seems to not do it's job and when the furnace is on you can feel the air rushing under the basement door.
We only have the exhaust vented outside, the combustion air just comes from the basement, they didn't even put the elbow in. It seems that they cheaped out on the HVAC install when they built this house.
Is it worth it to get rid of a chimney and put in a power vent, or keep the chimney so that the power vent doesn’t have a chance to break
So to keep it simple. Two pipes are allowed closer to windows and doors? Single pipes should be four foot?
That's correct.
Any old home build on the ground should never have an underpressure, as radon gasses and humidity from the ground is then sucked in.
Are combustion air vents required in the room if you only have the single vent installation?
what kind of plastic pipe i have to use?
3” pvc
just standart 3" ? PVC or CPVC or other one?
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Love the scripture on your wall ❤