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  1. #1
    Lunk1's Avatar
    Lunk1 is offline aka "JOB"
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    Where are my HVAC specialists?

    I need some ideas based on supplied specs.

  2. #2
    lovbyts's Avatar
    lovbyts is offline Knowledgeable Member
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    I just had one installed. Have you used any of the online calculators? I also had SEVERAL people come out and give me bids so I got a good idea what I needed. I also found a few good HVAC forums and joined one to do some research. There are some good engineers/HVAC specialist who are willing to help you figure out what you need.
    http: // hvac-talk. com/vbb/forum.php

    What do you got going? I might be able to help.
    Last edited by lovbyts; 06-18-2014 at 02:10 AM.

  3. #3
    lovbyts's Avatar
    lovbyts is offline Knowledgeable Member
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    Well where are the specs?

  4. #4
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    derekkpapa1 is offline Anabolic Member
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    I could help give up specs

  5. #5
    Lunk1's Avatar
    Lunk1 is offline aka "JOB"
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    I need to estimate cost on an air intake unit that will push conditioned air 50-75 FPM down the length of 100 feet to be then exhausted out through a 3 stage hepa filter system. The system should creat a very slight negative pressure. Ohhh and it needs to be CHEAP lol.

  6. #6
    Lunk1's Avatar
    Lunk1 is offline aka "JOB"
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    16 feet wide..

  7. #7
    lovbyts's Avatar
    lovbyts is offline Knowledgeable Member
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    Need to know what it is going into, how big, number of vents and back pressure.

    Its best you try the forum or just get several hvac bids. After a few you can tell who is full of bs and not and research online what model to go with.

    Dont go just cheap but reliable. Most expensive but very good reputation is trajectory but its more high end with all the bells and whistles. Cheap is Colman but I have read to many problems with the units and customer support.

    I went with Goodman

  8. #8
    Lunk1's Avatar
    Lunk1 is offline aka "JOB"
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    Its for a shooting range silly goose. There needs to be conditioned air blown in 15ft behind the shooter and exhausted out at the firing line through 3 stage hepa filtration. It needs to move at no less than 50fpm past the shooter. It would be in a space 16X100X10. The negative pressure should be approx. 10%

  9. #9
    lovbyts's Avatar
    lovbyts is offline Knowledgeable Member
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    You can get 3 stage he;p filterarion for any of the system, that's not an issue but what is is knowing and testing for the back pressure and stuff by someone who knows what they are doing. You dont want a system that is to big because it will burn itself out due to back pressure except for some of the HIGH end models that can regulate all that internally but you are looking at $20k probably.

    I did a LOT of shopping in research and had bids from $10K up to $25K for pretty much the same type of systems. The two most expensive was the trane and a no name and of course those where the two highest pressure sales people also claiming what a GREAT deal I would get. lol

    The estimates are free so I would schedule minimum of 5 if not 10 so you have plenty of options then throw what you got for estimates on the hvac site I gave you and see what they say or suggest then run it back past a couple of the guys you might want to use. If they are unwilling to answer questions you dont want to use them.

    You can also decide after getting the basic specs you want to DIY and there are a lot of places including Amazon that sell units pretty reasonable if you are comfortable hooking everything up yourself once you know what you need/want.

    The biggest thing to remember if you decide to DIY is you will not have any warranty even if they claim you will. MAYBE parts if something goes wrong in 1yr but that's it.

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