New HVAC unit or not ????
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  1. #1
    Join Date
    Aug 2008
    Posts
    34

    New HVAC unit or not ????

    Well here is the story :

    I have a 11 year old 3.5 ton Bryant package heat pump with 15 kw heat strips (12 seer) . I contracted my house being built and it is very well insulated . The unit is not given me any trouble but it is a "LOUD" unit and has been from day1 .

    I would really like to upgrade to a American Standard 4wcz6048 4 ton 16 seer package unit with 15 kw strips , but they are expsenvie .

    Pros :

    Very Quiet Unit
    Variable speed motors (better comfort )
    $1500 dollar tax credit which will help me re-coup some of my investment .

    Cons :

    Unit is working fine why spend the extra money

    How much money can I save per month going from a 12 seer to 16 seer dual stage compressor with variable speed ?

    What is the average life span of a heat pump ? I keep reading 12-15 years .

    Any comments are welcome , please give me some feedback .

    Thanks

    Don

  2. #2
    Join Date
    Jan 2004
    Location
    Lancaster PA
    Posts
    67,597
    Whats loud.
    The unit its self, or the air from the registers?
    Contractor locator map

    How-to-apply-for-Professional

    How many times must one fix something before it is fixed?

  3. #3
    Join Date
    Aug 2008
    Posts
    34
    The whole unit itself .

  4. #4
    Join Date
    Aug 2008
    Posts
    34
    How much would be the Avg monthly savings going from a 12 seer to a 16 seer ?


    Thank you

  5. #5
    Join Date
    Aug 2002
    Location
    Office and warehouse in both Crystal River & New Port Richey ,FL
    Posts
    18,836
    Quote Originally Posted by deer66 View Post
    The whole unit itself .
    Inside or outside?

    Very short return duct to grill ,will be noisey regardless of equipment.

    For cost savings ,go here;


    www.hvacopcost.com

  6. #6
    Join Date
    Aug 2008
    Posts
    34
    it is loud outside .Also inside short return air

  7. #7
    Join Date
    Aug 2008
    Posts
    34
    can anyone give me the AHRI rating on a 4wcz6048

    I could not find it .

    Thanks

  8. #8
    Join Date
    Apr 2009
    Location
    WV
    Posts
    75
    Here you go:

    AHRI Certified Reference Number: 1505072
    Model Number: 4WCZ6048A1
    Manufacturer: AMERICAN STANDARD, INC.
    Trade/Brand name: HERITAGE 1
    Cooling Capacity (Btuh): 47500
    EER Rating (Cooling): 12.00
    SEER Rating (Cooling): 16.00
    Heating Capacity(Btuh) @ 47 F: 44500
    Region IV HSPF Rating (Heating): 9.00
    Heating Capacity(Btuh) @ 17 F: 27000

    It meets the tax credit for package units
    Package systems:
    HSPF >= 8
    EER >= 12
    SEER >= 14

  9. #9
    Join Date
    Aug 2002
    Location
    Office and warehouse in both Crystal River & New Port Richey ,FL
    Posts
    18,836
    Why add a half a ton?

    Can you describe the short return(size grille and duct),post pics??

  10. #10
    Join Date
    Jul 2009
    Location
    Houston TX
    Posts
    83
    Well, it's your money. But I say, if it ain't broke, don't fix it.

  11. #11
    Join Date
    Aug 2008
    Posts
    34
    The grill opening takes a 25x25 filter . The duct is 14 inch round coming up from the floor . It is about 7.5 feet from the unit . I use 3m allergy filters with 1000 merv . Change the about every 2-3 months .

    Also I was not wanting to go up another 1/2 ton , but the new units only go from 3 to 4 ton . The 3.5 ton unit does a good job but I am afraid of going down to 3 tons . Also you have to understand I live in Arkansas 100 miles away from anyone that does a Manual J cal . The house is super insulated .

    Walls 2x6 in 16 inch centers with r19 batts , with 1 inch tongue and groove dow board on the outside and house wrap also . Base plate was caulked when building and all holes were foamed . r38 blown in the ceiling , garage is also insulated in the walls and ceiling . Double pane vinyl windows not low e.

    My house only gets direct sun from about noon to three . I do have lots of windows (19) . I also have a 20 foot catherdal ceiling in the living room . Do you think I can drop down to the 3 ton ?

    Becuase of that high ceiling my heating bills are usually the highest .

    Part of the reason for wanting to do this is to get my $1500 back from Obama,because it looks like he is going to be coming after more real soon.

    It is suppose to get back to over 100 degrees this week with high humidity, I know that the return on investment does not justify the expense but I am looking for a little better comfort level(more even temps) ,QUIET , and $1500 back from Obama. Can I get that with this unit ?


    Thanks

  12. #12
    Join Date
    Aug 2008
    Posts
    34
    Another positive is that I have some friends parents that want my unit . The hvac company will not give me anything for the unit . They offered me $500 dollars .

    Also does the t-stat have to be hooked up different or take a special t-stat to run the dual stage compressor ?


    Thanks

  13. #13
    Join Date
    May 2009
    Location
    Metro Atlanta, GA
    Posts
    13
    You sound like you are in the same boat I was a few months ago, with a still working unit, but a desire to become more energy efficient and to take advantage of the tax credit. You might want to consider doing your own manual J as a starting point to see if you need 3 ton or 4 ton. I used the HVAC-Calc software (see link on the top menu of each page on this board) and determined I could go down a half ton from what I had before.

    it's mostly measuring room and window sizes, and knowing what type of insulation you have; something that you look like you have a good handle on already. I was able to give the results to the contractor, who then used them in sizing the unit.

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