backdraft

I have a Bradford White Defender hot water heater with power vent RG1PV50S6N. The physical L shape of our house walls catches nasty backdrafts that go up the 45 degree angle exhaust pipe and down into our basement where the hwh is located. This happened with our bathroom vent too in the soffit...

This came with the house and I noticed there's a huge backdraft in the kitchen. I was wondering where would the backdraft damper go in such a system? The ducts go under the deck to the house and it's all buried in the walls. The range hood has this opening but there's no damper here Any...

Hello, I installed a new Rheem 50 gallon natural gas water heater to replace my old Rheem 50 gallon. I noticed after it ran for probably a half-hour the plastic trim pieces around the water lines was melting. The vent is very simple just an elbow on about a 45 then straight out the block wall...

We have a new home and one bathroom fan in particular has horrible cold backdraft from outside. The damper with the fan is angled at the top and bottom. It's not stuck. I suspect it is leaking in air or worse blowing open from the other side if enough air is hitting the flap. That particular...