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Type: Posts; User: hivacer

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  1. Replies
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    Adding return to each room will have absolutely...

    Adding return to each room will have absolutely no effect, the reason its hotter and colder up there is because the thermostat is on the first floor and each floor has its own profile therefore needs...
  2. Replies
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    nothing wrong with that setup for the return, you...

    nothing wrong with that setup for the return, you need the supply to run longer up there and less downstairs. zoning, adding returns will make no difference.
  3. Replies
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    St louis pipefitters union

    I am a journeyman mechanical pipefitter already, will i have to go through there apprenticeship again? Is there any work? I do Hvac and piping, i can do sheet metal work too. Looking for a better...
  4. Replies
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    1,432

    ditto stick a cheap blue fiberglass filter in...

    ditto stick a cheap blue fiberglass filter in there until another return is installed, filter grilles are fine but you need 2 of them at least and all the duct going back to the air handler needs...
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    I would put it all the way up against the house...

    I would put it all the way up against the house and bond it to the house foundation, meaning drill holes in the foundation, drive rebar and wire in so it cant come out and then pour your pad, if you...
  6. Thread: Open return?

    by hivacer
    Replies
    10
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    1,329

    your gonna need a power or steam humidifier on...

    your gonna need a power or steam humidifier on the supply, and as far as the ducts, it seems having ducts would be better, but if this basement is within the conditioned space it should be ok, if not...
  7. Thread: combustion air

    by hivacer
    Replies
    11
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    1,267

    i would use 3/4 armaflex, or 1 1/2" fiberglass...

    i would use 3/4 armaflex, or 1 1/2" fiberglass with pvc fitting covers, either way, i think the fiberglass will be easier and cleaner looking
  8. Replies
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    5,391

    ditto

    ditto
  9. Replies
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    1,124

    1 cfm per square foot will get you close but if...

    1 cfm per square foot will get you close but if you want it to be right gotta have the load of each room and know what size duct it takes to get the btus where they gotta go
  10. Replies
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    2,867

    All of your ductwork is undersized for that...

    All of your ductwork is undersized for that furnace the filter included, you will need a bigger trunklines and more registers or itll never work
  11. Replies
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    7,060

    round metal pipe, tape the joints and seams,...

    round metal pipe, tape the joints and seams, slide foil flex over for insulation, mark saddle locations cut and screw over flex into round pipe, flex for branch runs, only way to go everything is...
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    878

    ptac or pthp

    ptac or pthp
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    605

    it will work as long as its on one of the sides,...

    it will work as long as its on one of the sides, and not the front or back, generally the front is where the pipes come out, the front and back are very restrictive for airflow, the sides will be...
  14. good for you!

    good for you!
  15. Replies
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    1,810

    the mini splits will probably be about double,...

    the mini splits will probably be about double, and if they break you might be waiting on parts for a couple days in iowa, If it were my home I would probably get a water heater like a polaris to heat...
  16. Yea not to uncommon of a situation, ive ripped...

    Yea not to uncommon of a situation, ive ripped out brand new systems in brand new homes myself for this very reason, I would consider geothermal if you have the money there are federal tax rebates...
  17. Replies
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    3,962

    on a sidenote, packaged and rooftop units usually...

    on a sidenote, packaged and rooftop units usually come with a filter rack for 2 2" filters, yet when we install split systems you rarely see 1 filter that is even large enough!
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    3,962

    merv 8 would be a little better but I go by a...

    merv 8 would be a little better but I go by a simple formula on any 1" pleated filter, 2 cfm of air per 1 square inch of filter, so 1 ton of ac needs 400 cfm, so if you have a three ton 1200 cfm you...
  19. Do you have ac? if not maybe you could fish...

    Do you have ac? if not maybe you could fish insulated pex through the ductwork to baseboard radiators and put in a modulating boiler, probably a pricey proposition, would require some...
  20. They may be looking for a balancing report as...

    They may be looking for a balancing report as well if they are requiring dampers, not much use in putting in dampers if the system isnt balanced. This is usually done by a third party and they will...
  21. Replies
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    3,962

    you should really have them install a media air...

    you should really have them install a media air cleaner like an aprilaire 2200 or something similar, those 3m filters are terrible, its like putting a paper bag in front of your blower, seriously...
  22. Replies
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    Just curious what the point of checking this is...

    Just curious what the point of checking this is anyway, you cant get a gas furnace with an output much lower than 32000 btus anyway, seems like you would be better off with a 2 stage heat pump with a...
  23. When it comes to navien, noritz and rinnai yes...

    When it comes to navien, noritz and rinnai yes they are both standard, i am not familiar with the other models out there, my personal favorite is rinnai because I have one in my home, and it works...
  24. they modulate the gas flow for thermostatic, and...

    they modulate the gas flow for thermostatic, and the restrict the flow when it cannot keep up, so if your in the shower when the washer comes on you dont get cold water just less water
  25. they all have those features standard, as far as...

    they all have those features standard, as far as gas meters go, in my area they are rated for 250,000 btu normally but can flow 500,000 easy, as can the regulators they install, but I would check...
  26. you could duct half of it outside, and then it...

    you could duct half of it outside, and then it would buy itself in a couple of years:yes:
  27. Replies
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    8,863

    btw, we need pics of the install!

    btw, we need pics of the install!
  28. Replies
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    8,863

    what did you do with the condensate, do those...

    what did you do with the condensate, do those come with pumps?
  29. Replies
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    im 220 lbs and can walk on one little spot of a...

    im 220 lbs and can walk on one little spot of a roof and not go through, i wouldnt worry bout the soft roof unless its rotting away or something, spread it out over 3 trusses and it will be fine
  30. Replies
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    2,763

    I would not do dual fuel in florida, up north a...

    I would not do dual fuel in florida, up north a little more yes, but with dual fuel you have to lock out your heat pump to bring on your gas. With electric back up, your heat pump operates all the...
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    Around here you have to special order it and they...

    Around here you have to special order it and they put a coating on the coils and piping to protect it works well, probably any manufacturer can do it, just specify with the dealer that you want your...
  32. If you look at the specs on the units, the 80k...

    If you look at the specs on the units, the 80k modulates down to 19k, and the 50k down to 18k, and they have a 5 to 1 turndown ratio, so really not a difference on the low end, the 80 just gives you...
  33. Ill second the need for the home energy audit and...

    Ill second the need for the home energy audit and blower door test, and I would make any improvements you can before getting a load calc as this will effect your system sizing and duct design. As...
  34. no need to rip out a bunch of radiators in a...

    no need to rip out a bunch of radiators in a retrofit as long as it is set up properly, it will probably never have to pump out 180* water since there are too many baseboard but never the less work...
  35. Looks like munchkin has one that goes up to...

    Looks like munchkin has one that goes up to 50,000 btu max, but the 50 and 80kbtu both modulate to 18k and 19k so not much different, he may be sizing to the 80k for heating your domestic water if...
  36. your boiler will be set up on an outdoor reset so...

    your boiler will be set up on an outdoor reset so the temperature outside will determine the temperature of the water in the pipes, that boiler can modulate down to below 20,000 btus so you will be...
  37. Replies
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    I agree with the heat pump guy, the resistance...

    I agree with the heat pump guy, the resistance back up will require less maintenance, no gas lines, flues, and will last longer, additionaly 2 stage is much better for zoning
  38. Replies
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    4,095

    nothin wrong with vinyl tube, easy to take apart...

    nothin wrong with vinyl tube, easy to take apart and service, but it should be 3/4 vinyl, reducing the size from the outlet of a drain is against manufacturers reccomendations and code, and youll...
  39. Replies
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    nevermind the access panel just realized your...

    nevermind the access panel just realized your right at the end cap, ya you could either patch it with your collar in the patch or just replace the duct, 10x24 duct is probably a frefab item so not...
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    you could install a hinged or camlock duct access...

    you could install a hinged or camlock duct access panel from below and take a piece of sheet metal with the 14" start collar tabbed on it and sealed and position it in the drywall with a fat bead of...
  41. if you do add a safety, go with a wet switch...

    if you do add a safety, go with a wet switch rather than a float type switch, this will kill the system after it detects a very small amount of water the float switches must fill the pan up...
  42. Yea I wasnt even thinking about ductwork just...

    Yea I wasnt even thinking about ductwork just equipment, but it sounds like you have a good Idea of the cost, hopefully you can find someone near you to put it altogether. My company does jobs like...
  43. Seems like a pretty simple set up what you want,...

    Seems like a pretty simple set up what you want, but it will require mechanical drawings and I would only do it on a time and material basis and you wouldnt be off the clock until it was running and...
  44. Sounds like you havent found a good contractor...

    Sounds like you havent found a good contractor who knows how and what to integrate. You should be able to tell them what you want and they can come up with a good solution for you, I agree that...
  45. Replies
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    I would go with a unico if I had a chilled water...

    I would go with a unico if I had a chilled water system like the one unico makes or a geothermal water to water unit, I just dont like how they run with standard dx a/c units, from my experience you...
  46. the new furnace may be slightly more efficient...

    the new furnace may be slightly more efficient than a ah with hot water coil only due to the furnace being 10% more efficient than the boiler, but if you ever plan on changing the boiler I think it...
  47. I would choose the latter if I were you, might...

    I would choose the latter if I were you, might not even need to upsize the nozzle, bet it would be more efficient too. Just cant see having all the extra equipment vents and everything when youve got...
  48. 10:1 turndown means if you have a 100,000 btu...

    10:1 turndown means if you have a 100,000 btu boiler it can modulate down to 10,000 btus to meet its demand

    As for the cost being 100% more I would say that is probably accurate, but lets say you...
  49. I would suggest, new gas condensing boiler with a...

    I would suggest, new gas condensing boiler with a zone for your basement stuff, and a zone for a hot water coil that would go into your new air handler that would also have an evaporator coil for...
  50. Replies
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    r 8 and yes it is usually quicker and easier to...

    r 8 and yes it is usually quicker and easier to slip flex duct over hard pipe than wrap it with fsk. A little care must be taken to insure that the fiberglass doesnts bunch up or tear as it slides...
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