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  1. Another way of moisture removal (instead of...

    Another way of moisture removal (instead of reheating with gas or hot water) is to install heatpipes and use them for reheat. These require no additional energy use.
  2. http://optimalbuilding.com/files/ele...n_the_room....

    http://optimalbuilding.com/files/ele...n_the_room.pdf

    Interesting read. However, a real world test (as opposed to theories and thoughts and hearsay) by the Florida Solar Energy Center found that...
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    1. If you have rental house you need the HVAC to...

    1. If you have rental house you need the HVAC to work (or you have unhappy and former renters). So CALL the manufacturer and discuss with them to see if they will help. If they will good. If not...
  4. What Teddybear said.

    What Teddybear said.
  5. Skippedover: I would add one comment to your...

    Skippedover:

    I would add one comment to your guide. The good salesman will do two things: (1) A load calculation and (2) ask if the existing unit was keeping the house cool and warm.

    The...
  6. "Seasonal energy efficiency ratio (SEER): Ratio...

    "Seasonal energy efficiency ratio (SEER): Ratio of the cooling output divided by the power consumption. It is the Btu of cooling output during its normal annual usage divided by the total electric...
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    I am extremely confused. 1. "My HVAC works...

    I am extremely confused.

    1. "My HVAC works well to keep home warm in winter and cool in summer."

    2. "I am located in Minnesota. Starting in early fall and through early spring, my house gets...
  8. To answer your question about how two differernt...

    To answer your question about how two differernt people could come up with different Manual J estimates:
    - it is an ESTIMATE (and it can be wrong by 20% even if done very carefully)
    - different air...
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    jimj: I don't recall for sure. It has been a...

    jimj: I don't recall for sure. It has been a year since I read the study but that data might be in the study. I don't think they replaced ducts - just the HVAC units.
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    Oh, and call the BBB. I disagree with Fearless...

    Oh, and call the BBB.

    I disagree with Fearless on cost. In today's difficult economy somebody may give you a really good price to keep their staff employed or because they need the business. A...
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    A guy that takes lots of measurements and then...

    A guy that takes lots of measurements and then uses improper design temps is not really any better at sizing than the guy that uses a rule of thumb.

    Did anyone ask you if the existing unit...
  12. A load calculation is an ESTIMATE and even if...

    A load calculation is an ESTIMATE and even if done perfectly it is still an estimate. Ask what temperature each used for their calculations. A one degree difference in design temps could be the...
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    Actual savings differences between a 15 SEER and...

    Actual savings differences between a 15 SEER and 16 SEER or a 16 SEER and a 17 SEER will be hard to see. Predicted savings are usually higher than actual savings (many reasons). Units are tested at...
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    Udarrell wrote: "If U use a smaller unit that...

    Udarrell wrote: "If U use a smaller unit that runs longer & it pulls the humidity down well below 50%, then the sensible ratio will come back up: at 59F-IWB lower humidity latent load, Sensible goes...
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    Key in mind that a M J calculation assumes that...

    Key in mind that a M J calculation assumes that 1-3 days a year the unit might be slightly undersized. That is, it is not sized for the most extreme day of the year.
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    File a formal complaint with the Better Business...

    File a formal complaint with the Better Business Folks.
  17. Replies
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    Would it be realistic to extrapolate that if a 3...

    Would it be realistic to extrapolate that if a 3 ton system only ran for half the time on the hottest day of the year, that a 1.5 ton unit would be your most appropriate choice?

    Not necessarily. ...
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    Load calc used 75F internal temperature. Our...

    Load calc used 75F internal temperature. Our thermostat is 79F during occupied day, and 78F night.

    There is most of your answer. Heat transfer is a function of Delta T (outside temperature -...
  19. Oversizing heating or cooling units is a bad...

    Oversizing heating or cooling units is a bad idea. A properly sized unit will already be oversized except on the most extreme days (thus it is already over sized about 90 percent of the time).
    ...
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    Interesting answers. Both contractors said...

    Interesting answers.

    Both contractors said the units were properly sized. Contractor A did a load calc while Contractor B used knowledge that in GA the power company did a load calc for the...
  21. Air Mechanic: Once upon a time there was a...

    Air Mechanic:

    Once upon a time there was a company that had a kit you could install on your existing HVAC system. It added a small ground loop to your HVAC making it a hybrid. According to the...
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    The higher-SEER units utilize smaller compressors...

    The higher-SEER units utilize smaller compressors and larger coils (lower compression ratio),

    Okay so what are you disagreeing with? I said a more efficient compressor you said smaller - same...
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    Gotta ask - have you considered adding a bit of...

    Gotta ask - have you considered adding a bit of insulation or maybe sealing the windows? Even some radiant barrier insulation would help.

    18 degrees tells me the system is putting out some cold...
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    Depends upon how much insulation you already...

    Depends upon how much insulation you already have. It is a good product and you can install it yourself. Make sure to keep an air space or it will not work. Probably need to try installing one...
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    Ga-HVAC-Tech said " Mounting a higher SEER...

    Ga-HVAC-Tech said " Mounting a higher SEER condenser (AC unit) on a lower SEER coil is a recipe for a mess... At the least your will have higher elec bills.. IF (and that is a big IF) it works... "
    ...
  26. Thread: AC Repair

    by alex_in_fl
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    735

    Did you tell the tech that serviced your unit and...

    Did you tell the tech that serviced your unit and cleaned the coil that it was leaking? If yes then call them back and tell them it is still leaking and ask (politely) if they stand behind their...
  27. Agree Robo. Most people just state that "Oh, it...

    Agree Robo. Most people just state that "Oh, it will remove more humidity because it runs longer." They forget to check the latent heat on each stage. Frequently the latent heat removal to cooling...
  28. I agree with Teddy Bear and RoboTech and the Bald...

    I agree with Teddy Bear and RoboTech and the Bald one.

    And for the record, a major study found that right sizing units did not necessarily improve humidity control (to their total surprise). ...
  29. I think the two speed is a good purchase and...

    I think the two speed is a good purchase and Amana has a good warranty (albeit other companies are upping their warranties to 10 years also - Bryant for one).

    The advantage to the two speed is it...
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    First, if you are going open loop then you don't...

    First, if you are going open loop then you don't have to really worry about loop size. You simply need to insure that the inflow and return wells are as far a part as possible (at least 50 feet). ...
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    You are getting too many different pieces of...

    You are getting too many different pieces of information. And you are all over the place.

    Grab the yellow pages. Call some HVAC companies with medium size advertisements. Ask the cost to have...
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    The most important question is "What equipment do...

    The most important question is "What equipment do the two highest quality installers in your area carry?" That is all you really need to know. You can get a great or defective unit regardless of...
  33. Todd S: Yes, I meant what I said and no, it is...

    Todd S: Yes, I meant what I said and no, it is not necessarily ignorant if you think about it.

    The "sweet spot" on his units is when they operate at "low speed" so if the units run on low all the...
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    I am from Alabama so I understand the concerns...

    I am from Alabama so I understand the concerns expressed by those good ole boy HVAC contractors.

    Here is a simple solution. Build the standard attic, and install radiant barriers. These are...
  35. Hi Deforster2: I do not have the Web Energy...

    Hi Deforster2:

    I do not have the Web Energy Logger (WEL) system but some of my online friends do. This website shows the WEL in operation: http://welserver.com/WEL0043/ .

    FYI - He oversized...
  36. LOL All I want is GREAT BBQ and if my electric...

    LOL All I want is GREAT BBQ and if my electric smoker provides it... well, you'd need an army to get my electric smoker away from me cause I absolutely love BBQ!!!!

    But yes, that is why they...
  37. :oops: Major BBQ tournaments ban the use of...

    :oops:

    Major BBQ tournaments ban the use of electric smokers because you can get just as good or better BBQ using an electric smoker.

    I just wrap wood chunks in tinfoil and place directly on...
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    "Could this be right? I would expect to see water...

    "Could this be right? I would expect to see water running down the windows if it's 20F outside. "

    - I believe any minor condensation on the window should re-evaporate since the humidity is well...
  39. My recommendation (in order) - insulate attic -...

    My recommendation (in order)
    - insulate attic
    - caulk and seal windows
    - check weather stripping at doors (replace)
    - add clear film to any sliding glass doors or large windows
    - check outlets...
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    Tips: Watch the salesman and notice the little...

    Tips:

    Watch the salesman and notice the little things (they tell you something about the company). Did he take some measurements or just walk around? Did he ask if you have any hot/cold areas? ...
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    I agree. I think I will give that a try. It...

    I agree. I think I will give that a try. It seems close to what Lula (the cook/maid/family friend) used to make. Thanks!
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    Blah - but thanks.

    Blah - but thanks.
  43. What shophound said.

    What shophound said.
  44. Replies
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    1989 is older and low efficiency unit. A new one...

    1989 is older and low efficiency unit. A new one will definitely save you money. Here is what I would do:

    - Call the power company and ask if they offer free energy audits (or if they have...
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    You have a 20 year old unit. It works. There...

    You have a 20 year old unit. It works. There are nice rebates and energy costs are going up. Now is a great time to shop instead of waiting until it goes belly up and you have to buy one quick. ...
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    Yea. And 5,000,000 of hits means I still don't...

    Yea. And 5,000,000 of hits means I still don't have a good recipe.
  47. Bought a "lectric" smoker. Tossed the metal...

    Bought a "lectric" smoker. Tossed the metal wood chip box. Soak large wood chips then wrap in tinfoil and place directly attop the electric heating element. Add a large pan of water and come...
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    Tried marinades. Tried rubs. Keep going back...

    Tried marinades. Tried rubs. Keep going back to:

    1. Coat with soy sauce
    2. Sprinkle with garlic or garlic salt
    3. Pinch of salt if you just used garlic
    Let steak sit out for 30 minutes or...
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    Need recipe for Cornbread

    I like crunchy or hard cornbread not the soft "pound cake" variety. Anyone have a good recipe for cornbread?

    Thanks!
  50. If you really want to "watch" your sytem, buy a...

    If you really want to "watch" your sytem, buy a WEL instrumentation package. You can monitor everything - and then more.

    Do you think energy costs are going up or down? If down then go with...
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