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  1. Replies
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    Yes, I see now that there is minimal insulation...

    Yes, I see now that there is minimal insulation inside the handler. Although there are some transition boxes on the input and output that don't seem to have any.

    Good question about the sweating,...
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    972

    Air Handler Insulation

    My A/C air handler (no heat) is in my attic and naturally it gets very hot up there. My A/C air handler is fairly big and is completely uninsulated. I assume this is a common practice, but I also...
  3. Thread: A/C coil size

    by don87109
    Replies
    22
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    2,514

    Okay, guys, thanks. I guess a 2 1/2 ton coil...

    Okay, guys, thanks.

    I guess a 2 1/2 ton coil is okay.

    P.S. Yes it has a slug of drain tubes under the coil. It looks tough to clean, luckily I don't have to do it.
  4. Thread: A/C coil size

    by don87109
    Replies
    22
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    2,514

    The coil is a York m3uf032sa and the furnace is a...

    The coil is a York m3uf032sa and the furnace is a lennox g20q3e-75. I don't have the compressor model, but it is a York and I am certain it is a two ton unit.

    My understanding is that the York...
  5. Thread: A/C coil size

    by don87109
    Replies
    22
    Views
    2,514

    I looked up the part number and the manufacturer...

    I looked up the part number and the manufacturer says it is 2 1/2 ton. The increased coil surface probably didn't help, and may have hurt, because the slab coil is larger than the furnace supply...
  6. Thread: A/C coil size

    by don87109
    Replies
    22
    Views
    2,514

    At the time the installer said why he did...

    At the time the installer said why he did it.....to accommodate the furnace specs.
  7. Thread: A/C coil size

    by don87109
    Replies
    22
    Views
    2,514

    The reason the installer used a 2 1/2 ton coil...

    The reason the installer used a 2 1/2 ton coil was that was the furnace minimum A/C rating.

    My guess is that did nothing since he still only had two tons of cooling dictated by the size of the...
  8. Thread: A/C coil size

    by don87109
    Replies
    22
    Views
    2,514

    The install was done maybe 12 years ago. I'm...

    The install was done maybe 12 years ago. I'm trying to decide if I should use that company for another job.
  9. Thread: A/C coil size

    by don87109
    Replies
    22
    Views
    2,514

    It is working okay, but did it make any sense to...

    It is working okay, but did it make any sense to use a 2 1/2 ton evaporator coil with a two ton compressor?

    Especially since this was not an "A" coil, it was a flat car radiator shape. In fact,...
  10. Thread: A/C coil size

    by don87109
    Replies
    22
    Views
    2,514

    A/C coil size

    My son has a furnace rated to have a minimum 2 1/2 ton A/C coil. The contractor who installed his A/C a few years back put in a 2 ton condenser but used a 2 1/2 ton evaporator coil to satisfy the...
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    Thanks, no rudeness taken. I appreciate the time...

    Thanks, no rudeness taken. I appreciate the time you took to amplify my post. Orphaning a W.H. is an important point that I learned here.

    As a non-professional I was talking about my situation in...
  12. Replies
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    I guess that mostly the same thing applies even...

    I guess that mostly the same thing applies even if you are not installing a new furnace.

    The message I got was make sure the chimney is in good shape and conforms to local codes.

    Nice...
  13. Replies
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    Interesting that several manufactures...

    Interesting that several manufactures installation instructions say clay-lined masonry chimneys are okay. Again, I'm talking about 80% units. I have not looked at the higher efficiency units.
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    I don't get it. I'm not saying to "change any...

    I don't get it. I'm not saying to "change any flue type". I'm just saying the manufacturer says it's okay to use a clay-lined masonry chimney for an 80% furnace and common venting with a W.H. is...
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    I looked at one of the new Lennox 80% units and...

    I looked at one of the new Lennox 80% units and it clearly says a clay lined masonry chimney shared with a water heater is okay.
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    Thank you for the help. So far I have one...

    Thank you for the help.

    So far I have one proposal over the phone. That person said he didn't see any problem hooking a new furnace to the same chimney setup. He was talking about an 80% furnace...
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    New Furnace potential problem

    I'm going to get proposals on a new furnace installation, but I am concerned that my chimney cannot handle the modern furnaces. That is, I currently have a water heater and a furnace sharing the same...
  18. Replies
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    The furnace doesn't seem loud to me. When I had...

    The furnace doesn't seem loud to me. When I had the A/C installed maybe 15 years ago the tech was a little concerned but he said his pressure checks were good.

    When I get estimates for a new...
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    704

    Furnace input duct size

    My old Lennox 75,000 BTU furnace has an input duct about 30% smaller than the mfr marking on the side panel. The marking suggests a duct of "24 x 15", but my duct is only 24" x 10". The furnace was...
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    Plugging Natural Gas Line

    I need to remove a nipple and plug off a 1/2" natural gas outlet originally intended for a wall oven.

    Problem is there is no gas shutoff valve inside the house. I see a master shutoff valve...
  21. Replies
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    601

    Okay, I see it now.... I guess I'll have to go...

    Okay, I see it now....

    I guess I'll have to go to one of the DYI sites.

    Thanks

    Don
  22. Replies
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    I just read the forum rules in the registration...

    I just read the forum rules in the registration section and I don't see anything about DIY questions. Can you point me to the rules prohibiting DIY?

    Thanks.
    Don
  23. I had a cell phone fall into salt water. It took...

    I had a cell phone fall into salt water. It took about 10 minutes to retreive it. I soaked and rinsed it in distilled water and than placed it in an air conditioner outlet for a day or two to dry...
  24. Replies
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    601

    Fan Hi Limit Switch

    I have a lennox gas furnace where the flame is cutting out due to the fan limit switch opening. I tried a new fan limit switch, but it did not help. Th blower motor seems to be running normally and...
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    After reading the replies I checked the new...

    After reading the replies I checked the new control, it's a Honeywell 58600f. A quick google check revealed that the igniter is a combination igniter-sensor.

    Special thanks to the guys who...
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