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  1. Ecobee is much better than Nest (less reliability...

    Ecobee is much better than Nest (less reliability issues). It will control all the main features of the equipment equipment as long as its hooked up properly. The outdoor compressor stage will be...
  2. What's wrong with having 4 thermostats? I've seen...

    What's wrong with having 4 thermostats? I've seen houses with a lot more than that. If you're worried about managing them, just go with smart thermostats. You'll be able to manage them all from your...
  3. I think this is a solid plan. Minis are often the...

    I think this is a solid plan. Minis are often the more affordable choice compared tearing the house apart to fix ductwork, and it sounds like the layout of your house is pretty optimal for mini...
  4. The Gree Flexx is not a 5 stage unit. It is...

    The Gree Flexx is not a 5 stage unit. It is variable speed. It is designed to be matched with third party indoor units - which generally means no more than 2 stages of airflow. The Flexx is designed...
  5. My climate is only a little bit warmer than...

    My climate is only a little bit warmer than southern ON, and 60K would be oversized for the vast majority of 1700 sq ft houses here.

    An undersized unit won't use more gas than a properly sized...
  6. That filter is meant to be washed. I'm surprised...

    That filter is meant to be washed. I'm surprised your contractor would not realize that. Why are you trying to replace it?
  7. If you have enough wires in your wall for a 2...

    If you have enough wires in your wall for a 2 stage stat, you will have enough for the 412 - which shouldn't be too much more expensive than a good quality 2 stage stat. Then you can keep taking full...
  8. No, they use a different protocol. The 550 is the...

    No, they use a different protocol. The 550 is the stat you need.

    Another less expensive option is the 412 stat. This will retain full modulation of the furnace, but you lose the other...
  9. First off you need to differentiate between the...

    First off you need to differentiate between the FanHandler and the ECM when it comes to energy savings. FanHandler sells a kit bundling their controller together with an ECM but I wouldn't say this...
  10. Thread: Amana furnace

    by ss120396
    Replies
    26
    Views
    594

    OEM ECM motors have always been ridiculously...

    OEM ECM motors have always been ridiculously expensive, for all brands. And that was a big problem back when there were no aftermarket options.

    Luckily, that's changed. I'm a broken record on...
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    923

    It's not going away, but it's going to become a...

    It's not going away, but it's going to become a lot more scarce and expensive - as if it's not already bad enough today. 40% reduction in HFC production mandated next year, and that's just the start...
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    449

    I'm not familiar with that model, or with Haier...

    I'm not familiar with that model, or with Haier mini splits in general. But if R-32 units are available in your state, yes I would be putting them in. You can get familiar with the...
  13. Yeah, that's typical. Homeowner support lines for...

    Yeah, that's typical. Homeowner support lines for all the manufacturers are pretty much just trained to refer you to a contractor, not much else.

    For a question like this, your contractor would...
  14. Your air handler can control a single stage non...

    Your air handler can control a single stage non communicating heat pump from any manufacturer, with the onboard outputs. This includes variable speed compressor systems that modulate based on...
  15. Sounds like it's set for a single stage outdoor...

    Sounds like it's set for a single stage outdoor unit (factory default). Needs to be changed to 2 stage.

    Since all the settings appear to be at factory defaults, it sounds like this furnace was not...
  16. The company Bristol itself is defunct, but a Thai...

    The company Bristol itself is defunct, but a Thai company bought their assets and apparently started manufacturing them again, mostly for other countries (not including the TS, which has been out of...
  17. Replies
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    343

    No, you can't use a board from another...

    No, you can't use a board from another manufacturer. These boards are driving components like brushless fan motors and inverter compressors directly, and there's no guarantee another manufacturer's...
  18. No, an AC can't be expected to bring the temp...

    No, an AC can't be expected to bring the temp down quickly when it's really hot out. At design conditions, it will be limited to pretty much just maintaining setpoint, as you've experienced.

    Sure,...
  19. Replies
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    825

    That's why I'm trying to figure out what he's...

    That's why I'm trying to figure out what he's actually measuring... The supply numbers are way too high to actually be airflow. I'm pretty sure those numbers are just the velocity of the air...
  20. The Pacific Northwest spans a wide range of...

    The Pacific Northwest spans a wide range of climates... it looks like from one of your earlier posts you're in the Boise area, is that right?

    Assuming that's where you are, the design temperature...
  21. Replies
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    672

    OK that makes more sense. So it used Passivhaus...

    OK that makes more sense. So it used Passivhaus construction methods, but wasn't officially certified. Since there was a blower door test, they should have just plugged that into the Manual J instead...
  22. Replies
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    825

    Your table doesn't make clear what you actually...

    Your table doesn't make clear what you actually measured. Were you measuring face velocity (feet per minute) or was this a traverse to measure airflow (cubic feet per minute)?

    In general a...
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    881

    Did anyone actually measure airflow though? Low...

    Did anyone actually measure airflow though? Low airflow can hurt the reliability and longevity of the system. How do you know you didn't turn airflow down too much?
  24. The compressor for your unit is no longer...

    The compressor for your unit is no longer available, and the manufacturer is out of business. It turned out to be a very unreliable compressor, and Carrier actually had concessions to replace the...
  25. Replies
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    672

    That load calculation makes no sense. You can't...

    That load calculation makes no sense. You can't use the simplified infiltration method on a Passivhaus, their "Tight" value is still way too leaky. And how do you meet Passivhaus standards with a...
  26. Replies
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    672

    Of course she wants it cold enough to hang meat,...

    Of course she wants it cold enough to hang meat, it's the only way to get that monstrosity to run long enough to remove any humidity!

    My mini split is still going strong after 20 years, zero...
  27. Replies
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    672

    Sounds like a bad HVAC design to me. 2 tons is...

    Sounds like a bad HVAC design to me. 2 tons is ridiculous for a 2400 sq ft Passivhaus in North Carolina. No way that thing even has a load of 1 ton. Should have been able to handled by a mini split...
  28. Being a Bristol TS.

    Being a Bristol TS.
  29. Replies
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    898

    Yes, that's the suction temperature adjustment I...

    Yes, that's the suction temperature adjustment I was referring to. It definitely does help, but doesn't always solve the problem by itself.
  30. Replies
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    898

    I have seen Bosch humidity complaints when the...

    I have seen Bosch humidity complaints when the indoor unit is oversized. They come from the fact that as part of their energy saving algorithm, Bosch's compressor ramps up very slowly (over several...
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    228

    Where are you seeing the 803 available? It's been...

    Where are you seeing the 803 available? It's been discontinued since 2018... Even if you did find one sitting around somewhere, it didn't offer "real" dehumidify on demand. It could only overcool to...
  32. Why not consider a 90% furnace for NH? What...

    Why not consider a 90% furnace for NH?

    What type of gas is he on and are there any rebates are available for Hyper Heat in his area?

    If propane, Hyper Heat would be a good investment for sure....
  33. Replies
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    395

    Yeah, I didn't bother bringing sizing up in my...

    Yeah, I didn't bother bringing sizing up in my last post since the deed was done - but in my area, 2.5 tons would be about right or even a bit oversized for a 2000 sq ft home. Your assumption it...
  34. Replies
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    898

    Gree's cold weather performance is significantly...

    Gree's cold weather performance is significantly better than Bosch. Bosch's 3 ton drops off to 25K capacity at 17 degrees out. Gree's is still putting out full capacity at that temperature. At 5F,...
  35. Replies
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    898

    We can't even answer that, because relative...

    We can't even answer that, because relative pricing can vary by distributor, area, and for each contractor depending on the volume they do, especially for lines like American Standard. If you do a...
  36. Replies
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    415

    First stage vs. second stage isn't that much of a...

    First stage vs. second stage isn't that much of a difference on modern units with the unloading scroll. Nobody has bothered making a thermostat that will do what you're asking - because it just...
  37. Replies
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    898

    This unit has nothing to do with Trane or...

    This unit has nothing to do with Trane or American Standard. Trane merged with the US division of Mitsubishi, so those are the only mini split-type products Trane sells. Trane used to sell Gree...
  38. Replies
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    898

    Looks like a rebadged Gree Flexx to me. ...

    Looks like a rebadged Gree Flexx to me.

    https://www.geappliances.com/content/ductless/downloads/GE%20Connect%20Series/GE%20Connect%20Spec%20Sheet%2008-29-20.pdf
    ...
  39. My first question is... why do you want to do...

    My first question is... why do you want to do this? It would be a massive expense, with high potential for issues if they screw it up (which is likely, given most contractors have little experience...
  40. I think with that unit, you still need to use the...

    I think with that unit, you still need to use the matching air handler though. Don't think you can match it with a furnace like OP wants to do.
  41. Replies
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    395

    Looking at product specs, the M30 is not a...

    Looking at product specs, the M30 is not a communicating thermostat so I see no reason you would have to buy it.

    Hard to really give advice without more specific information. What model Lennox...
  42. That's a tough one, I don't know that there's...

    That's a tough one, I don't know that there's really an official definition.

    I'd recommend checking out this database:

    https://ashp.neep.org/

    They basically count every heat pump with a...
  43. How was the sizing determined? How big is the...

    How was the sizing determined? How big is the house and what is the layout? What model of Climatemaster is going in and will there be zoning?

    You are absolutely right to push for ductwork in the...
  44. Replies
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    326

    You didn't give nearly enough information about...

    You didn't give nearly enough information about the quotes to give feedback (but no prices please, not allowed on this forum).

    What models are being quoted? What Lennox models are being quoted,...
  45. If you're only planning on using the heat pump...

    If you're only planning on using the heat pump during the "transition months", a cold climate model is overkill. The whole point of laying out the cash for a cold climate HP vs. a more basic one is...
  46. Replies
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    556

    Your furnace supports two stages of cooling...

    Your furnace supports two stages of cooling airflow which can be activated by a thermostat/zone panel. Each stage will correspond to one of the nine speeds, which ones will depend on the airflow...
  47. Replies
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    556

    Yes, there are many zone panels out there that...

    Yes, there are many zone panels out there that will do that. But first you need to fix the problem that is causing your system to not system cool properly, regardless of the zoning.
  48. Replies
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    421

    A contractor who routinely does installations at...

    A contractor who routinely does installations at high altitude should know all about how to handle this. Leave it to the pros.
  49. Replies
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    556

    To clarify, you don't actually need a 2 stage...

    To clarify, you don't actually need a 2 stage condenser to take advantage of this feature. Provided you get full, sufficient airflow at max speed, it's safe to turn the blower down 30% when one zone...
  50. Thread: Training

    by ss120396
    Replies
    6
    Views
    513

    Yes, there is hands on training in on all the...

    Yes, there is hands on training in on all the things you mention in HVAC school - but in a lab, not at people's houses. You get experience with that on the job, starting out as a helper - either...
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