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  1. And key on the AC. You don't want a polarized...

    And key on the AC. You don't want a polarized capacitor (capacitors in this size are typically electrolytic and they make them in variants where one lead must always be more positive than the other)....
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    Fridge not cold

    Originally posted 3-06-2013 1:23 AM

    My Amana Fridge/Freezer just died. It sounds like it is running (not sure if I hear just a fan, or fan and compressor), but it isn't cold inside. Both the...
  3. Thread: DVD questions

    by suemarkp
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    Originally posted 3-01-2017 12:38 AM My...

    Originally posted 3-01-2017 12:38 AM

    My Windows 7 came with Windows DVD Maker. I've never used it, but if it is like other MS approaches, it will only play on Windows. Can't hurt to try it...
  4. Thread: DVD questions

    by suemarkp
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    564

    Originally posted 2-28-2017 1:17 AM 1. I...

    Originally posted 2-28-2017 1:17 AM

    1. I think you can put about 2.5 hrs on a DVD, double that on a dual layer, and double each for Blu Ray at HD levels (e.g. Blue Ray, Blue Ray double layer)....
  5. Originally posted 6-23-2017 3:27 PM What makes...

    Originally posted 6-23-2017 3:27 PM

    What makes you think a 6x6 can span 10'? What load are you assuming on that beam? Width isn't buying you much (i.e. a 4x6 carries nearly as much load as a 6x6,...
  6. Originally posted 6-02-2017 1:20 PM Is there...

    Originally posted 6-02-2017 1:20 PM

    Is there anything on top of this entry vestibule, other than a roof? I'm wondering how much weight you need to hold up while replacing the foundation...
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    Originally posted 3-19-2015 11:24 AM Usually,...

    Originally posted 3-19-2015 11:24 AM

    Usually, code applies to new construction and not a retrofit or repair (at least for this depth aspect). One technical design issue would be where do these...
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    Originally posted 12-10-2018 4:47 PM Do you...

    Originally posted 12-10-2018 4:47 PM

    Do you have a diagnostic manual (that shows either trouble codes or explains blinking light sequences)?
    Is the reversing valve working so it is in heat mode...
  9. Originally posted 11-14-2018 7:47 PM By: bulgin ...

    Originally posted 11-14-2018 7:47 PM
    By: bulgin

    thank you! This is extremely useful. I will see if I can get answers to those questions. Very helpful indeed.

    Thanks!
  10. Originally posted 11-14-2018 1:23 PM Before...

    Originally posted 11-14-2018 1:23 PM

    Before installing a HVAC system, a Manual J calculation should be performed. This tells you what size system needs to be installed. However, in order to do...
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    Originally posted 7-28-2017 2:06 PM There...

    Originally posted 7-28-2017 2:06 PM

    There could be so many issues.... is the new unit working properly? Is it sized correctly? Was it installed properly or in a poor place? Are your ducts good?...
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    Originally posted 8-27-2017 9:52 PM Using 10"...

    Originally posted 8-27-2017 9:52 PM

    Using 10" round duct (inside diameter) or an 8x10 rectangle duct, you should be able to easily move 400 CFM.
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    Originally posted 8-27-2017 8:16 PM Area is...

    Originally posted 8-27-2017 8:16 PM

    Area is area, whether rectangle floor holes or round flex duct. You need about 25 square inches to move 100 CFM, 50 square inches for 200CFM and so on. As the...
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    Originally posted 8-27-2017 3:54 PM No....

    Originally posted 8-27-2017 3:54 PM

    No. Calculate the area (pi * r * r). Generally, each time you increase by 2 inches you are approximately doubling the flow. So two 6" ducts equals one 8, two 8"...
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    Originally posted 8-26-2017 7:14 PM I'm pretty...

    Originally posted 8-26-2017 7:14 PM

    I'm pretty sure the CFM rating of the inline fans is with air at zero initial velocity (and the CFM ratings are probably optimistic assuming near 0 friction)....
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    Originally posted 8-26-2017 3:58 PM Sucking...

    Originally posted 8-26-2017 3:58 PM

    Sucking air from right at or around the woodstove is good because it is so hot. But you won't want to use flex duct for that (I'm not sure what its temp rating...
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    Originally posted 8-14-2017 12:17 PM Yes, I...

    Originally posted 8-14-2017 12:17 PM

    Yes, I was wondering if the air intake stack (ceiling capture) was -- near the pellet stove or the one across the room. The Y won't work in your first picture...
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    Originally posted 8-14-2017 12:33 AM If you...

    Originally posted 8-14-2017 12:33 AM

    If you want to have 3 openings, I'd consider using an 8" duct and 8" fan. Then some 8" tee's with 6" on the leg to the bathroom and another similar T for the...
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    Originally posted 8-13-2017 8:57 PM I get 2.6...

    Originally posted 8-13-2017 8:57 PM

    I get 2.6 degrees when I use it for the loss in the crawl space section. Assuming air entering at 80F, crawl space temp of 30F, flow rate 100 CFM, length of run...
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    Originally posted 8-13-2017 2:39 PM I think...

    Originally posted 8-13-2017 2:39 PM

    I think you need at least 10 degrees F to make this workable. So if you have 80 to 85F air, you can probably warm the other rooms to 70F. If they are colder...
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    Originally posted 8-12-2017 7:21 PM Its a...

    Originally posted 8-12-2017 7:21 PM

    Its a complicated question. Here's many of the relevant issues:

    The Y, if it is an equal split (e.g. 7" in, two 6" out) should split the air equally....
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    Originally posted 8-12-2017 1:36 PM You're not...

    Originally posted 8-12-2017 1:36 PM

    You're not going to find an easy answer to the air flow question. Does this fan have a pressure -vs- CFM curve with it (and this also varies by air density...
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    Originally posted 8-12-2017 1:07 PM No the...

    Originally posted 8-12-2017 1:07 PM

    No the tall air suction duct does not need to be insulated. You could use round metal pipe (just as ugly). That's why I suggested a rectangular wood tower -- it...
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    Originally posted 8-11-2017 7:00 PM I don't...

    Originally posted 8-11-2017 7:00 PM

    I don't think it matters much. The fans can handle only so much static pressure on the suction and pressure sides. What is more important is air velocity and...
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    Originally posted 8-10-2017 3:00 PM The...

    Originally posted 8-10-2017 3:00 PM

    The tubing you want is HVAC flex duct. Home Depot has it in 6", 7" 8" and larger sizes (note that 6" flex duct is 10" outside diameter, as the walls are about...
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