I apologize for the length of this post, but since the sewer and HVAC guys I've talked to seem to be stumped, I'll try to explain my situation in as much detail as I can, and hope that someone out there has some answers! For the past three winters (the four before that were fine), I have been getting a tremendous amount of sewer gas build-up in my second-story attic space. I say winters, because I do not have any issues unless daytime highs are in the 50s F or below. Also, the smells tend to start around 8pm, peak at 10pm, and fall off after midnight. To explain the inconsistency: my understanding is that on warm days, the ground is warmed up enough to allow convection to carry sewer gases up and away from roof vents, but on cold days gases can become "trapped" closer to the ground due to temperature inversions (colder air below warmer air). So, given the days/times I'm having problems, I have reason to believe that the sewer gases are mostly coming from neighbors' plumbing vent stacks and entering my attic through soffits and other roof openings. On these cold nights the sewer gas odor is often present outdoors as well, but seems to depend on what the wind is doing. Sometimes I can smell it in my back yard, other times in the front, and often I can smell it in other parts of the neighborhood. In the part of the attic where the gas build-up is strongest, the gas is seeping into the upstairs bedroom below it making it basically unlivable. Also, My HVAC/Furnace units are in the attic, so any time the heat runs, it distributes some of the gas throughout the entire house. The city has already been out multiple times to flush the sewer main and smoke tested for leaks etc. but nothing has helped. However, my neighbors have not been complaining about this issue, which tells me there may be some things I can do myself to keep the sewer gases from building up in the attic. Here are some things I'm considering: 1. Have my next door neighbor install some type of filter on his plumbing vent stack (I already installed a charcoal one on mine and it didn't help). That neighbor is in a one-story house next to my two-story, and the gases seem to be worse on that side of the attic than the other side (my other neighbor has a two-story house). I doubt this would resolve the issue completely, but maybe it would help? 2. Run an ozone generator in my attic on cold evenings. Based on what I've read, this could be pretty effective, though it comes with drawbacks of its own, and does not address the real issue of why the sewer gases are building up in my attic in the first place. 3. Have an HVAC company check for proper system balance. Maybe I have a negative pressure situation in the house/attic that is drawing more air into the attic than normal? 4. Give up and move somewhere else :wall: Thanks in advance for any advice.

Hi everyone i just bought a new water booster pump. I tried placing it myself and i know this may sound dumb but First time i placed the check valve on the outlet and in the opposite direction. Tried to run the pump and the pressure gauge went up but water didn't run. I did some troubleshooting and corrected the placement of the check valve... But ever since when i try to run the pump, the motor just hums and overheats very quickly. The fan behind the motor only runs when i turn it with a screw driver. It runs very slowly and eventually stops. I hope I didn't kill the motor completely coz it did cost an arm and a leg. Ur help will be greatly appreciated My pump is a brisan turbo booster with a pressure tank attached to it. It has no electric controls such as the reset button. ThanKs