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  1. Replies
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    Probably won't qualify for the credit unless you...

    Probably won't qualify for the credit unless you dump the furnace...


    Do I have to replace both my heating and air conditioning to qualify for the tax credit?
    Answer


    The law does...
  2. Replies
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    +1 The only time you use a furnace in Phoenix...

    +1

    The only time you use a furnace in Phoenix is after the electric rates drop - winter electricity costs in Phoenix are about a nickel a kw - cheap enough that you can afford to run a heat pump...
  3. Replies
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    Heat pumps can last a very long time in Phoenix. ...

    Heat pumps can last a very long time in Phoenix. I replaced the original Trane unit on my house last year - it was 21. My Bro's house in Phx has the original Carrier unit on the roof, it's 23. He...
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    Unfortunately, during the summer in Phoenix it's...

    Unfortunately, during the summer in Phoenix it's alot more profitable for a servicing company to run 10 "emergency" calls than to spend a couple of days installing and fine-tuning a system.

    The...
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    If you're in Phoenix, APS offers subsidized...

    If you're in Phoenix, APS offers subsidized ductwork leakage testing. I would start there. finding a qualified contractor in the area is going to be a challenge, but the guys on the APS list are at...
  6. Replies
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    If your basement is below 32 degrees you're in...

    If your basement is below 32 degrees you're in danger of having your pipes freeze, and at temps above that the COP of heat pumps makes them work just dandy.

    I'm surprised an HVAC guy would be...
  7. Replies
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    The tank I replaced was there 22 years. As it...

    The tank I replaced was there 22 years. As it is, I don't see removing the airtap to be that big of a deal.

    As for my climate being warmer than most - I wouldn't argue that, however my...
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    I installed an Airtap in my house about a year...

    I installed an Airtap in my house about a year ago. Works great and the power consumption is a nothingburger - about $10 a month, according to my kill-a-watt meter, at 22 cents/kw. If you've got...
  9. Replies
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    5,149

    one unit of energy = one unit of heat. ...

    one unit of energy = one unit of heat. Typically, standard electric water heaters are a little less than one.

    With a heat-pump water heater, one unit of energy = 2 (or slightly more than 2)...
  10. Replies
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    two year payback for solar? Maybe if you've got...

    two year payback for solar? Maybe if you've got an Enron accountant...
  11. Replies
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    I use a 2 stage unit in Phoenix - we've got very...

    I use a 2 stage unit in Phoenix - we've got very low humidity as well - if you're sensitive to low humidity an add-on "bypass" humidifier can bring the numbers up for not alot of bucks. They're not...
  12. Replies
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    3,921

    I've got an Airtap Heat Pump water heater sitting...

    I've got an Airtap Heat Pump water heater sitting on top of a conventional (50 gallon) electric water heater. The airtap draws about 700 watts when it runs, and according to my kill-a-watt meter my...
  13. Replies
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    1,608

    Expensive work often isn't good work in the hvac...

    Expensive work often isn't good work in the hvac trade either. I had several quotes for my new system, and all proved to be taking short cuts that would have impaired it's performance.

    Manual...
  14. Replies
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    4,954

    neither is available in 1/2 ton increments. ...

    neither is available in 1/2 ton increments. You'll find the price difference between the two is a nothingburger though. For my money, I'd get the dsz "c" model, which will work with the...
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    I'd look more at the heating load than the...

    I'd look more at the heating load than the cooling load - your basement isn't going to require much if any cooling unless it's a walk-out or very exposed.

    For that area of the country, i'd...
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    Until the trade finds a way to "weed out" the bad...

    Until the trade finds a way to "weed out" the bad apples, who expect to get paid like rock-stars for low quality work, you can't blame the public for just picking the "cheap" contractor. Odds are,...
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    Yup... lets put this cat back in the bag... the...

    Yup... lets put this cat back in the bag... the internet is "evil" because it allows consumers to figgur out how much things cost - and how much they're paying the installer...

    Oh, yeah... ...
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    FWIW, one of the op's previous posts indicates...

    FWIW, one of the op's previous posts indicates 1550 sq/ft in the northeastern US. 3 tons might be excessive based on that info..
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    Goodman's two-stage units are only available in...

    Goodman's two-stage units are only available in full-ton increments. According to what I've read, stage one is roughly 75% capacity, or in your case - 3 tons. I have a DSZ - 18 , 4-ton unit...
  20. Replies
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    That's a really great idea for hospitals - those...

    That's a really great idea for hospitals - those guys are going to make some serious money!

    At least until China spools up and starts making $99 knock-offs...
  21. Replies
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    Yes, they're profit makers, but the media filters...

    Yes, they're profit makers, but the media filters do an excellent job.

    Dust, dander, pollen and dust mites are proven to be allergens to some people, and there's pretty convincing evidence that...
  22. Replies
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    Sorry, but I just don't buy the "fragrance" issue...

    Sorry, but I just don't buy the "fragrance" issue - even if I did, it isn't something you can do much to prevent - if you look closely at some of the "unscented" products you buy, you'll find...
  23. Replies
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    2,016

    Why would the contractor care if the customer...

    Why would the contractor care if the customer knows the cost? People have known for years to the penny what car dealers pay for the product, and using your example - we know how much a steak costs....
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    This is a pretty nasty statement - as a...

    This is a pretty nasty statement - as a businessperson, you always have the opportunity to decline a job - The customer no doubt has family and obligations just like your own - and an equal...
  25. teflon tape... pipe dope... more silly-cone...

    teflon tape... pipe dope... more silly-cone...
  26. Replies
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    So let's summarize... 2800 square foot...

    So let's summarize...

    2800 square foot unfinished house -

    parts of which are over 100 years old... but it's "well insulated"... :whistle:

    HVAC plans call for TWO systems...

    100...
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    +1

    +1
  28. Replies
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    I think if you're concerned about media pricing,...

    I think if you're concerned about media pricing, you would want to stick to standard, widely available components. Your could buy one from the same supplier as the hp, or look for the big guys -...
  29. Replies
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    446

    do the insulation first - your local utility may...

    do the insulation first - your local utility may offer rebates on it and even if they don't, blown in cellulose is very inexpensive and makes a big difference - both in overall comfort and in your...
  30. Replies
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    6,644

    Well, I'm just a homeowner like you - but what...

    Well, I'm just a homeowner like you - but what you've described doesn't sound like a Defect.

    your system was professionally installed - use your internet connection to register the warranty and...
  31. Replies
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    is there insulation in the ceiling? your post...

    is there insulation in the ceiling? your post doesn't make that clear...

    As for 3.5 tons cooling 2800 square feet in 105 degree weather... well, not gonna happen with standard insulation...
    ...
  32. The hvac trade is it's own worst enemy - even...

    The hvac trade is it's own worst enemy - even great, knowledgeable techs write incomplete repair orders, and wimpy proposals that do very little to communicate the value added by a proper install. ...
  33. Replies
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    good lord, edit the prices out of your posts or...

    good lord, edit the prices out of your posts or you'll get banned in two posts...
  34. Replies
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    amana = goodman - for better or worse. No one on...

    amana = goodman - for better or worse. No one on this forum will discuss price - you've got part numbers so you can google them if you want an idea of what your contractor is paying for the parts.
  35. Replies
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    If you check around, you'll find the large...

    If you check around, you'll find the large cabinet media filters can be had for even less than the product mentioned above. The benefit is a change interval of once per year, which can be done at...
  36. Replies
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    Idea #1 stop payment on your check Idea #2,...

    Idea #1 stop payment on your check

    Idea #2, read the thread below.

    http://hvac-talk.com/vbb/showthread.php?t=376342
  37. Replies
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    530

    There's a spec in the install manual for a...

    There's a spec in the install manual for a weighed-in baseline - for example, my Goodman system was factory-filled with enough refrigerant for 15 feet of line. with 1 1/8" line, the spec is .6 ounce...
  38. Replies
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    I don't know about the infinity stat, but I can...

    I don't know about the infinity stat, but I can say that you'll have a hard time telling when a scroll goes into stage 2, unless you're standing right next to it - and usually then, it's the fan...
  39. Replies
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    They're actually very reasonable - especially...

    They're actually very reasonable - especially given the longer change interval.

    If this system is designed from scratch, there's no reason not to incorporate a media filter cabinet into the system...
  40. it sounds a bit like a train hitting the...

    it sounds a bit like a train hitting the brakes...

    skreeeeeeeetch!

    It'll roll you out of bed and frizz your cat's tail for sure - if it's too close to the house.

    There's some youtube...
  41. Replies
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    I'm saying that a 1" filter will be much more...

    I'm saying that a 1" filter will be much more restrictive than a 4" filter of the same size and merv rating. If you want filtered air, use something that won't choke your system. Read the chart...
  42. I have the DSZ 18 heat pump, and on that model...

    I have the DSZ 18 heat pump, and on that model it's very easy to eliminate stage two. Just a matter of leaving a wire off. And you're correct about the air handler, at least as far as the...
  43. Replies
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    1,391

    How about my real-world example: I doubled my...

    How about my real-world example:

    I doubled my attic insulation (to R50) , replaced half of my windows, installed an 18 seer two-stage heat pump - (doubled the return/filter size as well) and...
  44. Replies
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    Standard size is a great idea, but the big-box...

    Standard size is a great idea, but the big-box stores don't carry the thick media filters, which are the only filters that give you a chance to actually filter the air without excessively restricting...
  45. Replies
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    I wouldn't expect much savings based on the...

    I wouldn't expect much savings based on the average bills you posted - you've already got lower heating and cooling costs than most in Phoenix.

    A/S is good stuff, and 2 stage is nice as well.
  46. Return air "cans" are made of thin sheet-metal -...

    Return air "cans" are made of thin sheet-metal - They don't require "major" framing to hold them in place - The builder of my home attached mine to a single stud - all you're supporting is the can,...
  47. The first thing I would do is toss the filtrete...

    The first thing I would do is toss the filtrete filter in the trash. 1" filters are too restrictive because they have insufficient media, unless they're so "open" that they filter nothing.

    The...
  48. Replies
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    I've insulated several garages over the years,...

    I've insulated several garages over the years, mostly in cold climates - in my experience, having anything in the ceiling helps tremendously - summer or winter. Walls don't matter nearly as much. ...
  49. Thread: Loud Return

    by rzyzzy
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    1,288

    Bigger duct = less noise. Was the noise...

    Bigger duct = less noise. Was the noise mentioned before the new unit was installed?
  50. Replies
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    +1 - sounds like a good rule - if you've got a...

    +1 - sounds like a good rule - if you've got a manual J supporting it, how can they argue? It should be required for all installs - bigger, smaller or same size.
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