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Type: Posts; User: fat bob

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  1. Replies
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    Compressor cuts out on high speed

    I'd like your thoughts on this problem. I have a Carrier 38TDB 4 ton with a two-stage compressor. It's been super hot here. In the afternoon, when the compressor tries to switch to high stage, it...
  2. Yes I'm sure you're right about using the right...

    Yes I'm sure you're right about using the right materials. I've finally figured out how my duct work was installed, and have looked at other houses under construction. Apparently the common way...
  3. Often the most leakage is at the supply boots. ...

    Often the most leakage is at the supply boots. If the boots aren't sealed to the drywall ceiling you will have a lot of leakage there. It's relatively easy to seal all of these from the attic or...
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    You might also consider a mini-dehumidifier. I...

    You might also consider a mini-dehumidifier. I got one for my master. I also have an exhaust fan, but the mini-dehumidifier is nice especially in winter, since it generates some heat, uses only 60...
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    When you say you clean the coil, do you mean the...

    When you say you clean the coil, do you mean the outside unit or the indoor unit? When a tech says the "coil" is dirty, I believe he's usually referring to the indoor coil.
  6. 120+ is not unusual. The amount of venting you...

    120+ is not unusual. The amount of venting you describe is also common but may not be adequate. There are many ways to address your problem. I suggest ruling out obvious problems first. If the...
  7. Replies
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    Running two big dehumidifiers all the time uses a...

    Running two big dehumidifiers all the time uses a lot of electricity. I have a small portable Sears model that uses 500 watts. Are the dehumidifiers drawing in fresh air? If yes you may be...
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    There are two-stage furnaces that have a high and...

    There are two-stage furnaces that have a high and low setting for the blower and the burners. Not the same as a variable speed blower. Variable speed is nice because it will automatically adjust to...
  9. The Halo brand has a sticker on the inside you...

    The Halo brand has a sticker on the inside you can see if you remove the bulb and trim. It will say "IC" somewhere, like H7ICAT means 7 inch, IC, airtight. Not sure about other brands. The ICs are...
  10. Thread: boot rails

    by fat bob
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    2,140

    Dremel with the most oversized cutting wheel that...

    Dremel with the most oversized cutting wheel that will work with it.
  11. Replies
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    1,456

    If you don't believe radiant barriers work, try...

    If you don't believe radiant barriers work, try this simple experiment. Take two identical water glasses, and cover the outside of one with ordinary aluminum foil. Fill each glass with the same...
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    Not an expert but I do live in Austin and commend...

    Not an expert but I do live in Austin and commend your interest in an alternative design. Good luck with it. I would focus on humidity concerns. Austin doesn't get a lot of rain but don't let the...
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    Jiffy Lube didn't change the oil filter

    Just before wifey left to get her oil changed, I whipped out a Sharpie and made a mark on the filter. Sure enough, she returns and the filter is untouched by human hands. She calls to complain,...
  14. The easiest way is with a caulk gun or a squeeze...

    The easiest way is with a caulk gun or a squeeze tube of caulk. Mastic comes in a caulk tube. Really any kind of caulk will work.
  15. If your problem is leakage, you need to remove...

    If your problem is leakage, you need to remove the registers and caulk the gap between the drywall and the boot. Caulking around the registers won't do anything.
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    1,447

    I doubt this will completely solve your problem,...

    I doubt this will completely solve your problem, but any kind of leaks in the ceiling will have a bigger effect on heating than cooling, since cool air sinks and the effect of ceiling leaks is...
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    That's a shame. Looks like a clever design. The...

    That's a shame. Looks like a clever design. The bathroom fans should have their own dampers, so the damper at the wall is a backup of sorts. You should be okay with a regular vent. I glued a...
  18. Replies
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    Not sure I understand your system, but if you can...

    Not sure I understand your system, but if you can find a way to cut off the supply to your hot water lines and backflush them, that may help. I have ordinary hot water heater tanks. I can backflush...
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    1,257

    I've wondered whether a simple device could...

    I've wondered whether a simple device could capture heat stored in my attic in the winter. I have a dark roof, and on a sunny day it is not unusual for the temperature outside to be around 60,...
  20. Replies
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    Mine look like that. Six year old Carrier evaps...

    Mine look like that. Six year old Carrier evaps in a humid climate. It may be galvanic action caused by dissimilar metals touching, or ordinary rust. Doesn't seem to be a big deal. Painting them...
  21. Replies
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    3,212

    If it drains above the trap, its a good idea to...

    If it drains above the trap, its a good idea to clean out the trap with a bottle brush occasionally. The gunk tends to build up at the trap. It's really quite easy. If the plumbing is plastic you...
  22. Replies
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    1,734

    A portable AC might work, if you have a window. ...

    A portable AC might work, if you have a window. The AC sits inside the room and a tube attaches to a flat panel that fits in the bottom of the window. You hardly notice the panel from outside.
    ...
  23. Replies
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    1,361

    It's a good idea to run fans when you shower, to...

    It's a good idea to run fans when you shower, to reduce humidity and mildew problems. Running the fan when the dryer is running sounds like a bad idea; that's just going to compete with the dryer...
  24. Replies
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    On the issue of partial coverage, I think a...

    On the issue of partial coverage, I think a decent analogy is window blinds, which also block radiant heat. Closing the blinds halfway will keep a room cooler. If you plot the room temperature over...
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    I had a problem with vaulted ceilings I wanted to...

    I had a problem with vaulted ceilings I wanted to warn people about. My roofers & framers dutifully installed roof and soffit vents, but the insulation installer shoved big pieces of insulation...
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    If you have a variable speed blower, an easy...

    If you have a variable speed blower, an easy method to check relative airflow of filters is with a clamp multimeter. Just measure the amps. Doesn't give actual airflow, but I prefer it to earlier...
  27. I'd suggest getting installed quotes. If you...

    I'd suggest getting installed quotes. If you have to convert the 4 inch vent to 6 inch, or run a bigger gas line, the additional installation cost can be substantial.
  28. Replies
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    Sounds like he closed some dampers to decrease...

    Sounds like he closed some dampers to decrease airflow, and closed the registers to maintain the throw. Closing the registers won't have much effect on the amount of air moving through the register...
  29. Plants love condensate. I have a nice synergy...

    Plants love condensate. I have a nice synergy going with my hackberry tree. The AC waters it with condensate, and it provides shade for the condensers and eastern exposure. I've shaped it to arch...
  30. Replies
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    That's interesting. Guess I was wrong about the...

    That's interesting. Guess I was wrong about the dust.
  31. Replies
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    1,372

    One sided works. In summer, the low emissivity...

    One sided works. In summer, the low emissivity of foil facing down keeps heat out of the attic; in winter, the high reflectivity of the foil reflects heat from the living space back down. But the...
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    As long as your windows are about the same size...

    As long as your windows are about the same size and location and un-obstructed, it's very unlikely you would get less airflow upstairs. It's a basic law of fluid dynamics that flow drops to zero as...
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    Not sure but would somthing like this work?...

    Not sure but would somthing like this work?
    http://www.elights.com/h1499ic.html

    expensive. Says new construction but you can usually retrofit a new construction can if you can access it from the...
  34. Replies
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    There are airtight cans and also airtight trims,...

    There are airtight cans and also airtight trims, such as the Halo "Airtite" 30WAT. I've tried both and concluded that the trims are not really airtight unless you really fuss with them and they fit...
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    Best guess is I just got distracted by a phone...

    Best guess is I just got distracted by a phone call or something and stupidly went on to the next tire, leaving two finger tightened only.
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    Drove 5 months with 2 lug nuts missing

    I rotated my tires in December. Over the weekend, while washing the car, I noticed two of the four lug nuts on a rear tire were missing. I probably got distracted and didn't tighten those two and...
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    Seriously, is that normal?

    Seriously, is that normal?
  38. Replies
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    2,773

    Can you access the area where the air exits the...

    Can you access the area where the air exits the dryer drum, behind the lint trap. About every six months, I remove a front panel and an air manifold in this area to get to the fan. The fan and...
  39. Replies
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    6,237

    Dang, you can't. Thought about that after...

    Dang, you can't. Thought about that after posting. I must've used my clamp multimeter to get an amp reading, and then volts x amps to get watts.
  40. Replies
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    I used a Kill-a-Watt to get the 200 watt...

    I used a Kill-a-Watt to get the 200 watt measurement, but you may be right that a kwh reading would indicate that it doesn't constantly draw 200. I'll have to try that. You are right the the gadget...
  41. Replies
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    Your entire focus is on HVAC, which is certainly...

    Your entire focus is on HVAC, which is certainly appropriate if you have a humidity problem. If your main problem is high electricity bills, you should look at other things too. I could give you a...
  42. Replies
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    When the AC is off. Just making the point that...

    When the AC is off. Just making the point that even if the ducts are perfectly sealed, running my fan will still move air through ducts sitting in a hot attic and pick up some of that heat. I've...
  43. Replies
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    My ducts are in the attic and despite my best...

    My ducts are in the attic and despite my best efforts, it still gets mighty hot up there in the summer. The ducts are insulated, but running the fan only converts the ducts into a giant heat...
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    Try running the AC for a few hours. The smell...

    Try running the AC for a few hours. The smell may go away. I get a musty smell every Spring; I think it's just dust that's accumulated on the AC coil fins during the Winter. When you first run...
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    Gore & global warming

    All politics aside, 191,000 kwh is a tad steep. Maybe he should change his filters or something.
    http://www.msnbc.msn.com/id/17382210/
  46. Replies
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    I too have window condensation problems, but have...

    I too have window condensation problems, but have noticed that this never happens at the office. I attribute this to three factors. First, you have more moisture creation in a home with cooking,...
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    1,855

    Plumbing should not cause air leaks because of...

    Plumbing should not cause air leaks because of traps, as long as the pipes are sealed at the wall. Bathroom fans and the dryer vent should have a damper, but fans, can lights, and really all...
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    How high are your ceilings? Low velocity airflow...

    How high are your ceilings? Low velocity airflow (not surprising with 21 registers) and high ceilings could mean that the warm air is staying near the ceiling. What kind of registers? Some of the...
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    I sometimes watch a TV show where potential home...

    I sometimes watch a TV show where potential home buyers come in, with hidden cameras rollling, and make their comments. Sometimes these are expensive homes. Sadly, you never hear anything like "I'm...
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    The humidity functions for furnace and AC are...

    The humidity functions for furnace and AC are completely different. In Winter, the thermidistat has various functions that operate a humidifier. Where you live you do not need a humidifier. In...
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