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1-20 of 89 Results
  1. HVAC
    Just got a furnace installed after multiple "mess-ups" by the contractor. He never measured the hole the furnace needed to fit through and this we had to emergency request another person to cut a bigger whole and this is the work he left behind, ducts held up by electric wires and they took MY...
  2. HVAC
    Hi all, I’m replacing this old bathroom vent (currently vents into attic) with a new larger Panasonic fan with a sufficient CFM rating for the master bathroom & will add a 6” insulated duct to vent it out of the roof. The current fan is 11” both sides whereas the new fan will need 11” on one...
  3. HVAC
    So, I'm wanting to install rigid ducting for my new downstairs bathroom fan exhaust. I thought it was 4" all along, but I'm dumb as it was actually a 3" duct exiting the side of the home! So I purchased a 4" - 3" reducer to make the ends meet But now... It seems that my reducers 3" end is...
  4. HVAC
    I need to replace my square ductwork due to a bad leak rusting it out. It’s a crawl space and I’m planning on going all round duct. Down draft furnace. House approximately 1450 sqft. I’m looking for pointers on sizing. & On when to reduce. This is an old schematic I made. Ignore the side...
  5. HVAC
    We have two bedrooms over the garage, one of them is always cold/hot depending on the season. It isn't that bad in the winter but in the summer its hot in there at night. I thought it was just the garage but I broke down yesterday and troubleshooted the venting and I think it is not connected at...
  6. HVAC
    I have designed new home build (2 story duplex, concrete slab) with AC and all ducts within air conditioned space. I plan to not have any insulation around the duct because it is all within air conditioned space. Total supply duct length is 48 feet in each unit. Is there reasons to use round...
  7. HVAC
    I am in Texas. It is hot most of year. I seldom use (gas) heater. I have designed new home build (2 story duplex, concrete slab) with AC and all ducts within air conditioned space. Because heat rises seems to me that return ducts make more sense to be near ceiling rather than near floor. (All...
  8. HVAC
    My home in upstate New York consists of a cape cod style main house (2 bedrooms upstairs) built in 1940, and a one-story addition that was put on in the late 80's. The house is heated with hot water baseboards in the new section and cast iron radiators in the original part. The new and old...
  9. HVAC
    I think I know the answer, but want to double check. In the attached image, what is the flexible joint in the duct work? What's the purpose? This system has it on the return side. Is the supply supposed to have one too?
  10. HVAC
    Hello all, I had an maintenance call on my furnace recently and the tech mentioned the humidifier was installed incorrectly. I have 2 return ducts returning into the the furnace and one duct supplying air to the house. The humidifier (currently) is mounted to one of the returns and the 4 inch...
  11. HVAC
    Hi all, I am currently finishing my own basement (I am not a contractor or anything, just a DIYer). The ceiling of my basement is still exposed. I can see the metal pipes that carry air from the utility room to the first floor (See photo) . Now I need to make ductwork in my basement. My question...
  12. HVAC
    There is an article about 2 foot rule of take off. Improve System Performance Using the Two-Foot Rule - HVAC Today In my case, There is already an existing take off from the top , can i directly have another take off from the side of trunk in same bay ? I don't have other option. The below...
  13. HVAC
    So I’m in the process of cleaning my dryer vent ducts. I have already cleaned the “hard metal” duct that runs outside. Now I have to clean the “soft duct” that is attached to the dryer itself. My question is... I have a gas dryer, do I have to shut off the gas if I am going to be removing the...
  14. HVAC
    Hello, I purchased an air scrubber as the one shown here https://library.coburns.com/specs/ACTIVTEK_9960009.PDF The installation per se is rather easy, but complicated by the extremely compact size of the system in my apartment. The info in the pdf says to mount the air scrubber past the air...
  15. HVAC
    I am putting in a very small 1/2 bath in my finished basement. I am trying to figure out the best way to vent and exhaust fan to the outside. Unfortunately, the wall that butts up to the foundation does not have a window and it sits on the opposite side of my patio steps. Of course the joist run...
  16. HVAC
    Hi All, I'm looking for advice on which size of trunk & ducts to use. I've used a ductwork calculator that is associated with Menards and they drew up a plan but it doesn't take into account some things that I need. I have a 1 story house with a basement. The furnace is in the basement. I...
  17. Building & Construction
    I would like to move my dryer down the wall by about 6 feet, but I can't move the exhaust vent (window and gas meter regulator within 36"). I am going to use cabinets which will sit on adjustable legs, so I will have about 4" of space under the toe-kicks. Can I use this space to run my dryer...
  18. HVAC
    I have a 1973 double wide mobile home. I have a Bryant 80 series gas furnace. The past owner seems to have messed up and jerry-rigged the ducting. And I can't seem to find any manual etc. that answers my question. So I'm going to try my luck here: Mobile home furnaces have two heat duct...
  19. HVAC
    I have a Bryant 80 series gas furnace. I think it's from 1973. It's in a doublewide mobile home. The past owner must have destroyed the original round crossover furnace duct tubing. They put in it's place cheap foil type tubing (don't know what to call it) and it's like 8 inches which I...
  20. Appliances
    Hi - this is my first post/time on this forum ever so please bear with me if I’m confusing or doing it wrong. Home Depot just delivered and installed a gas dryer at my home. I knew nothing about proper vent installation at the time. After the installers left I started questioning the common...
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