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  1. Replies
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    The septic tank is about 10' west of the room and...

    The septic tank is about 10' west of the room and the air vent for the tank is about 20' away from the room.

    The nearest vent serves the first floor bathroom and comes out of the roof one level...
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    Aerobic septic tank smells inside house

    We have an NPS aerating septic tank and one basement bedroom smells of chlorine every time the septic tank is in an aeration cycle. The septic tank doesn't have a chlorine post-treatment system.
    ...
  3. Four 3-way switches, two lights, two ganged device boxes.

    What's the best practice method to wire a lighting circuit where 3-way switching is required for both feeds on a two circuit track light installation?

    The track has a shared neutral and two hot...
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    Sounds like the neutral ('common') is open...

    Sounds like the neutral ('common') is open somewhere in or before the 3-gang box. Check all neutral connections for loose hookups. Use a continuity checker or ohmmeter to check for neutral...
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    Without taking duct losses into account, the best...

    Without taking duct losses into account, the best case for a properly balanced 4" duct is about 900 BTU/hr, or 250 watts equivalent. Actual heat delivered will be lower because of heat loss through...
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    You'll get zero volts across the hots but 120...

    You'll get zero volts across the hots but 120 from hot to ground if both hot wires are attached to the same leg (phase) at the panel. Each hot must be on a different leg to get 240.

    If you're...
  7. The prohibition against oversizing ACs does not...

    The prohibition against oversizing ACs does not apply to minisplits, however, as they are variable capacity. Oversizing a minisplit--within reason--only means higher initial costs and much faster...
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    The fan speed button on the Evolution thermostat...

    The fan speed button on the Evolution thermostat sets fan speed for when the system is idle. Fan speed is set by the thermostat (without any user adjustment options) when the system is heating or...
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    You'd need to be nuts to use a ventless fireplace...

    You'd need to be nuts to use a ventless fireplace as a heat source. At the absolute best, they're nothing more than slightly safe conversation pieces.

    Do a heat loss calc and either get some...
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    As in said in my post...

    As in said in my post in your other thread, you need to do a load calculation. Heat loads can't be guessed.

    Your existing HVAC might have the capacity to support another 500 sq ft of living...
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    There's no such thing as a rule of thumb for...

    There's no such thing as a rule of thumb for heater sizing. You must do a load calculation to estimate how much power you'll need to heat a given room.

    Heating requirements vary hugely depending...
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    Any air-permiable insulation you add will get...

    Any air-permiable insulation you add will get soaked unless you install an air/moisture barrier over the insulation.

    The concepts involved aren't that much different from insulation and vapor...
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    Unlike window ACs, ductless minisplits are a...

    Unlike window ACs, ductless minisplits are a fairly big investment. It's worth taking the trouble to size them properly.

    Get a copy of HVAC Calc or RHVAC (the demo is good enough) and do a heat...
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    Each return vent should be sized for the room (or...

    Each return vent should be sized for the room (or collection of rooms) it serves. A simple rule of thumb is to match the effective cross sectional area of all supply vents in the immediate vacinity...
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    Single stage equipment that can cope with -70...

    Single stage equipment that can cope with -70 will have a big problem with short cycling in actual (i.e. down to -40) weather. That won't be good for efficiency, good for the remaining life of the...
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    From your description it doesn't sound like your...

    From your description it doesn't sound like your grounding is code compliant or particularly safe. House ground wires must be connected to a good quality ground connection--a hose bib doesn't count....
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    Unexpected flames in gas appliances are never a...

    Unexpected flames in gas appliances are never a good thing.

    Turn off the gas to the heater and call a plumber.
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    The difference is that residential AC equipment...

    The difference is that residential AC equipment and furnaces don't produce enough condensate to keep their respective traps full all year.

    AC condensate will keep the AC trap full in summer, but...
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    Remote hose bib uphill from house

    I want to add a ground-mounted hose bib at the front of our lot, about 20' away from the house and 30' above both the incoming water line and the lowest tap in the house.

    Unfortunately, trenching...
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    Both condensing furnaces and AC coils produce...

    Both condensing furnaces and AC coils produce condensate. Both produce condensate only when they are operating: AC in summer, furnace in winter.

    The condensate line on a condensing furnace is...
  21. I'm not aware of any thermostat that can do what...

    I'm not aware of any thermostat that can do what you want.

    I wouldn't bet on the fan being able to correct an 7-10 degree spread between floors, either. You might need zoning.
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    Code in Canada (where the OP is located)...

    Code in Canada (where the OP is located) specifically requires dual circuit split outlets in kitchens. Canada's various code authorities don't consider the requirement unsafe.
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    Bad idea. Septics don't like solids.

    Bad idea. Septics don't like solids.
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    I believe the Evolution filter sensing system was...

    I believe the Evolution filter sensing system was specifically designed for Bryant/Carrier's 3.5" media filter and EAC units. It probably won't give meaningful results when confronted with standard...
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    Our electrical code has very specific...

    Our electrical code has very specific requirements for kitchen outlets. Kitchen receptacles must be either 20A with both outlets on one circuit (e.g. standard wiring) or 15A split. In most...
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