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  1. #1
    Join Date
    Nov 2008
    Posts
    7

    Comment on quoted AC system pricing

    khoile,

    You need to read the site rules before you post.

  2. #2
    Join Date
    Jan 2004
    Location
    Lancaster PA
    Posts
    68,562
    Please read site rules, Thank you.
    No pricing questions.

    You may want to do your own load calc to see what size equipment you need.

    http://hvaccomputer.com/talkref.asp
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    How-to-apply-for-Professional

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

  3. #3
    Join Date
    Nov 2008
    Posts
    7
    Oops Sorry. Will not happen again.

  4. #4
    Join Date
    Jul 2004
    Location
    Massachusetts
    Posts
    6,841
    Here's what you need to know.

    Did the company do a Manual 'J' load calc? If yes, continue with them. If no, drop them and find one that will do the calc. Why? Because the Load Calculation is like the frame of a car, the foundation of a home. Without the load calc, all the rest is just guessed at and stuck together. Without a good frame, when you run the system it'll just fall apart. Not literally but figuratively. It's likely to be out of balance, meaning different temps in each room, short cycle or not have enough capacity for a hot day. Either way, you're risking your entire investment by selecting a company that doesn't do a Manual 'J' calculation before quoting the job. After the Man J come Manual 'D', which is a duct system designed on the loads from Man 'J'. The Man 'S' is used to properly size the equipment, again based on Man 'J'. So you see, everything begins with Manual 'J' calculations. Without them, no 'D', no 'S', you pay big money for something that there's no confidence that it will work at all. Will it cost more getting it from a company that does it right? Sure. Don't you think a car with a frame costs more than one without? You only get what you pay for. If you cut corners to save money, expect the company you're dealing with to cut corners to make money. So you both cheat, they make some money, you end up back here asking what's wrong with your new AC system. We reply, "Well first, did you have a Manual "J" load calculation done?" You say "No" and we say "Can't help you".
    If YOU want change, YOU have to first change.

    If you are waiting for the 'other guy' to change first, just remember, you're the 'other guy's' other guy. To continue to expect real change when you keep acting the same way as always, is folly. Won't happen. Real change will only happen when a majority of the people change the way they vote!

  5. #5
    Join Date
    Nov 2008
    Location
    Massachusetts
    Posts
    44
    Quote Originally Posted by skippedover View Post
    Here's what you need to know.

    Did the company do a Manual 'J' load calc? If yes, continue with them. If no, drop them and find one that will do the calc. Why? Because the Load Calculation is like the frame of a car, the foundation of a home. Without the load calc, all the rest is just guessed at and stuck together. Without a good frame, when you run the system it'll just fall apart. Not literally but figuratively. It's likely to be out of balance, meaning different temps in each room, short cycle or not have enough capacity for a hot day. Either way, you're risking your entire investment by selecting a company that doesn't do a Manual 'J' calculation before quoting the job. After the Man J come Manual 'D', which is a duct system designed on the loads from Man 'J'. The Man 'S' is used to properly size the equipment, again based on Man 'J'. So you see, everything begins with Manual 'J' calculations. Without them, no 'D', no 'S', you pay big money for something that there's no confidence that it will work at all. Will it cost more getting it from a company that does it right? Sure. Don't you think a car with a frame costs more than one without? You only get what you pay for. If you cut corners to save money, expect the company you're dealing with to cut corners to make money. So you both cheat, they make some money, you end up back here asking what's wrong with your new AC system. We reply, "Well first, did you have a Manual "J" load calculation done?" You say "No" and we say "Can't help you".
    Amen. My brother-in-law works for Carrier Corporate, and he takes calls all day from homeowners who want Carrier CORPORATION to size and price the equipment. I suppose the worst part of his job is that he can't laugh at them on the phone when they get upset that he can't price out and size units for them...I can't wait to see him on Thanksgiving, he always has some funny stories to share about the calls he receives...last week he told me he got a call from a homeowner in Michigan who had his phone in one hand, and his cracked heat exchanger in the other...

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