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  1. Attic Ventilation/Power Exhaust Question

    HVAC
    A few days ago I came across this admonition (from a vent manufacturer's website) - "Never mix two different types of attic EXHAUST vents on the same roof above a common attic (wind turbines, roof-top louvers/box vents, gable-end louvers, ridge vents or power fans). Doing so can short-circuit...
  2. Problem with condenser fan

    HVAC
    Greetings All - Hoping to get some direction on how to tackle this issue. New capacitor installed New contactor installed Verified 240 volts to contactor Verified proper amps to the condenser fan Verified condenser fan is good through OHM test The condenser fan struggles to start spinning...
  3. New Home - Ceiling Fan Bracket

    Electrical
    We moved into a newly-built home and bought some ceiling fans. When I went to install them I noticed the boxes in the ceiling don't seem to support ceiling fans. They're held in with drywall screws and don't seem secure enough to hold the weight of the fans. I'm trying to figure out what to do...
  4. Old Sears Power Miser 80 Furnace Fan won't turn on when set to "Auto"

    HVAC
    I have an old Sears Power Miser 80 Furnace and the fan blower won't turn on when the thermostat is set to "Fan Auto". The furnace ignites, the Fan Limit Control spins around while heating up and when it hits the fan notch, nothing happens. Eventually the furnace will reach the shut off notch and...
  5. Crawlspace automatic dehumidifier /fan combo

    Electrical
    I want to keep my crawl space dry without spending a fortune on electricity from dehumidifier. Right now I switch between fan and dehumidifier depending on season. I live in northeast. I had heavy rains this spring sump dump stopped working and my dehumidifier got flooded. Now I'm in the market...
  6. Dead bathroom ventilation fan - any chance of repair?

    General DIY Discussions
    Hello all - my first post, so thanks in advance and I'm happy to have found the site! I've just had a bathroom ventilation fan die on me. I got out the ladder and expected it to be an easy fix; figured I'd be able to swap out the old motor for a new one and voila. But it, unfortunately...
  7. venting and insulating ceiling with rigid foam

    Insulation
    Good morning! Writing to you from Vancouver, Canada, which I understand to be climate zone 4. I've gutted my second floor bathroom. We're going to have the ceiling follow the roof deck (ie, the other side of this sloped ceiling is the roof). The rafters are a meagre 3.5 or 4 inches. I am...
  8. condenser fan not working help

    HVAC
    ac works great condenser fan spins i have cold air. the heater however will not stay running typically runs 30 mins they cuts off and hums or the fan will not kick on at all and just sits there humming while we freeze. i've replaced the capacitor and that didnt fix anything im low on cash for...
  9. Bath fan exhaust routing

    HVAC
    Hi folks, I have a Panasonic recessed light style bath fan ready to install. I've cut a hole over the shower stall (unit is UL listed for showers if GFCI protected) and moved it to the attic to dry-fit. The roof system is 2x4 trusses on 24" centers, with low pitch and 18" of headroom where...
  10. Dimmer/fan combo switch controlling next switch

    Electrical
    I've replaced all the outlets and switches in my house, so I'm fairly comfortable and confident in these matters, but that may have been my downfall this time around. I replaced a switch with a new dimmer/fan combo to control a new ceiling fan, now the switch at the end of the line only works...
  11. Kitchen ceiling light fixtures all went out !

    Electrical
    Greetings all, I had a ceiling fan and light die some months ago, also the lighted switch that controlled it went out on the wall. I put it on the back burner for repair( no pun intended) as I had other lighting I could use in the area that was adequate. There was a fluorescent bulb over...
  12. Switching light switch

    Electrical
    Hi, I'd like to replace a fan/light switch in my house. The current switch is one unit with two switches controlling either on/off for the fan/light independently. The replacement switch is one unit that has two multi-setting swtiches for each the fan/light. Current switch is wired three black...
  13. Bathroom Vent Fan Test

    HVAC
    Tissue would not stick. Buy a new one?
  14. Bathroom fan/light: Fan only spins if nudged

    Electrical
    Good morning, I have a bathroom vent/light combo made by Hunter. It is wired to two switches: one for light, one for fan. Light is fine. Flipping the wall switch for fan, I can hear the hum of the motor (?) but the fan itself won't start spinning unless I nudge it - often a poke with a paint...
  15. Two Switches, One for Fan and Light, Other for Just Fan

    Electrical
    Hello, Could one wire two different switches, where one switch controls both a bathroom light and a fan, and the other switch just controls the fan? Background: I want to be able to turn on both my bathroom light and fan when I enter the bathroom (motion sensor switch for this), then once done...
  16. Carrier 40AQ024300BB Fan Won't Stop

    HVAC
    Fan on 40AQ024300BB unit will not stop running, with compressor also running all the time in cooling mode, even if temperature is set above ambient (Heat Pump) When I turn off fan at thermostat or remove call for fan in inside unit on the contractor relay, fan kept running. Replaced contactor...
  17. Fan not spinning

    Electrical
    Hello, I have a Ceiling fan which doesn't run when turn on. Without the blades I can get it going after a little push. I suspected the capacitor, so tested the capacitor with a micrometer. It's a five wire CBB61 capacitor without the following: Gray-->Red should be 4uf------->micrometer...
  18. Electrical code for fan pre-wiring

    Electrical
    Hey guys, I'm building a house with Pulte builder in Nashville, TN and have a question about fan pre-wiring. They are charging $130 for just fan-prewiring that includes fan brace and an additional switch to operate fan and light separately. I was reading somewhere (lost the link) that new...
  19. Wiring Hole House / bathroom fan

    Electrical
    Hello, I have a fan in a bathroom that acts as both a bathroom ventilation fan and a whole house fan. The fan has 2 switches on the wall. One up high which is a standard timer switch (single pole) that runs the fan on a timer and one down low that a user can use to turn on the fan at any...
  20. Have to manually start outside AC fan turning

    HVAC
    Everyone, I've tested everything I can test and even replaced the big capacitors on my HVAC unit outside to try and get it working; the problem is that once you turn the A/C on, or the temp inside reaches a point where the fan needs to kick-on, you have to go outside with a gun cleaning rod and...
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