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  1. HVAC
    I am in the planning stage of putting in a Heat Recovery Ventilator (HRV) in a two-story colonial with basement. I have central air located in the basement with a full set of supply and return ducts in every room (except none in the unfinished basement, and no return ducts in the two bathrooms...
  2. HVAC
    I am remodeling my basement and am frustratingly (is that a word?) going through the building permit process. One of the city's requirements is that I provide a minimum of 6'-8" clearance beneath my furnace ducts. Most are right at or slightly above 6'-8". One length is shy by about 1-1/2 inches...
  3. HVAC
    I am installing new ductwork in my home, currently there is no A/C and the heat is hot water radiators. I am using mastic and UL rated foil tape to seal all the joints and connections. My question is, can I apply the foil tape to the inside of the duct? In other words, since this is all new...
  4. HVAC
    Hi everyone, I live in a modern stucco sided two story house with an attic. Both of the bathrooms upstairs have windows with no exhaust fans. I'm starting to notice small mold spots in the master bathroom so its time to install exhaust fans in both bathrooms. I'm ok with the fan...
  5. HVAC
    Hi, I have an old furnace in a lake house (~30 years old single wide mobile home) that I frequently use about once a month. The existing furnace is too old and has to go. Window AC are used during summer. I purchased a used Package unit (Carrier 48SS-042 -LP furnace and 3.5 tons AC.) I...
  6. HVAC
    Sorry I don't know how to rotate these attachments. Is it just me or should this plenum be plumb and vertical, and yes.... it is also out of level by 3/8".:eek: I envisioned a tapered transition to a vertical 8" to a 90 degree turn at bottom. The sheet metal work was completed after I was...
  7. HVAC
    Hi all, I'm looking to do my own HRV install and have a question about running ductwork in the attic. I plan to use regular galvanized ductwork in the attic and then insulate the whole attic area (over the ductwork) with R20 of blown cellulose (Canada) Do you see any problems doing it this...
  8. HVAC
    I am doing some structural work in my basement and the only way to get in the steel is to take down a span of ductwork, or to cut it. It looks like I can take out the piece I need to, it's about 3 feet long, on one end is an elbow that turns it upstairs through the floor, and the other end it...
  9. Building & Construction
    The previous owners added on a 160sqft sunroom to the living room. To me it serves no purpose so I want to go through the ceiling and tap into one of the home AC vents to provide central AC to this room addition and then add wood flooring and make it a study/xtra bedroom. Before I hack into...
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