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  1. Ask for the ION. It is the same as the...

    Ask for the ION. It is the same as the infinity/evolution.

    It also enhances the cooling functions more than your nest could even think about doing. Not to mention the better staging and enhanced...
  2. Unless you are going modulating/inverter units...

    Unless you are going modulating/inverter units with modulating dampers and proprietary controls. Which is the best but still need even the smallest zone to be able to handle the highest of the lowest...
  3. If it is a heat pump, go with a Lennox aluminum...

    If it is a heat pump, go with a Lennox aluminum matching coil. The only sad thing with Lennox is you only get a 5yr coil part warranty when only the coil is being replaced.

    I would recommend to...
  4. Heatingman is on the right track most likely: ...

    Heatingman is on the right track most likely:

    Think about how the flame sensor is rectified thru the flame: the board sends out the power, as the flame ignites, where does the flame rectify to...
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    Do you have any room air cleaners running during...

    Do you have any room air cleaners running during thes high level readings.

    The epa have found some pco and reactive ion air cleaners can cause higher levels of certain vocs.

    Is this a new or...
  6. If the model numbers are correct, the BTUs are...

    If the model numbers are correct, the BTUs are all over the place:
    Carrier 110k 80%
    Goodmana 100k 80%
    Lennox 70k 93%

    Wonder who actually is the most correct with their golden rule of thumb.
    ...
  7. That is why there is a controller and a bypass...

    That is why there is a controller and a bypass valve. Also I believe they said there is a temp sensor that also hooks to the controller that will only activate the bypass if the water temp is below...
  8. If your going to do it: Talk to these guys,...

    If your going to do it:

    Talk to these guys, they did it on this old house. But remember this old house has done some stuff that was supposed to work great and turned into a big flub.
    ...
  9. Waste of time, effort and materials. Have seen...

    Waste of time, effort and materials.

    Have seen many try to accomplish what you are going for. Never seen any work out at any desired savings or accomplish any substantial pool heating.

    One such...
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    Ventless fireplaces or any fuel burning ventless...

    Ventless fireplaces or any fuel burning ventless heater, you are putting your life and others lives on the line hoping a 2 dollar oxygen depletion sensor does its job and shuts the unit down before...
  11. It sounds like your crawspace is not sealed and...

    It sounds like your crawspace is not sealed and insulated properly with a proper vapor barrier.

    Do you have crawspace vents on the exterior walls? Are they opened or closed?

    Are the crawspace...
  12. The problem: coil failed The solution: replace...

    The problem: coil failed

    The solution: replace coil or system

    Now curveball: home warranty

    Home warranty only attracts low quality contractor sometimes not insured or licensed properly....
  13. My next suggestion would be: Can you get them...

    My next suggestion would be:

    Can you get them low on an interior wall near the floor blowing towards the outside wall? And locate the returns in the ceiling near the outside walls?

    I just find...
  14. If the walls of the basement are about 50% below...

    If the walls of the basement are about 50% below grade and the floor is below grade, it is doubtful you will need any cooling in the summer. You may need a dehumidifier down there in the summer...
  15. Letís dive into this a little. A single stage...

    Letís dive into this a little.

    A single stage 3, 4, or 5 ton will not work well set up for zoning with such small individual zones of 300sqft. It would have to bypass so much air it would be...
  16. I think it would be a great idea to add a return...

    I think it would be a great idea to add a return to each of the bedrooms so they have an active return and no issues when doors are closed.

    Just make sure they are not located next to the supplies.
  17. I see no big issue with your supply static. ...

    I see no big issue with your supply static.

    Your return needs to have the existing return fixed up as stated earlier and I would reccommend another return pipe and grill added to the return plenum...
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    Jeff Donít know what will be available when...

    Jeff

    Donít know what will be available when you need to replace them in the future.

    But I will tell you, now they have the modulating furnaces out, this is what I mainly install now. Your two...
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    Jeff, So all these years later since you got...

    Jeff,

    So all these years later since you got the smaller variable speed 2stages unit.

    How has it been?

    Has it operated quieter than the old oversized unit with less vent noise on low and...
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    Is the flue pipe slopes properly at 1/4 inch per...

    Is the flue pipe slopes properly at 1/4 inch per foot back towards the furnace with no bellows and properly supported every 3ft.

    I had a unit making a terrible burner noise and it was from a wall...
  21. I donít know if the fv series of carrier/icp...

    I donít know if the fv series of carrier/icp support all the function anylonger. I can tell you that the icp/carrier are equipped with the same parts in the same models.

    All of the icp internal...
  22. I have been installing the observer now ion...

    I have been installing the observer now ion systems since they came out. The observer was a dumbed down infinity controller. The ion is the exact same controller as the infinity touch minus the...
  23. I donít know if it is still there as I donít...

    I donít know if it is still there as I donít hardly ever use the fvm4x airhandler any longer.

    I always use the fcm4x as it utilizes the communication ion control which has the highest amount of...
  24. If it is located conditioned space insulating is...

    If it is located conditioned space insulating is not necessary but does not hurt.
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    Neither both builder or economy grade many times...

    Neither both builder or economy grade many times made worse by builder or economy grade contractors.

    Pick the best contractor you can find and pick the best system from them that you can afford.
  26. That is a box. Probably not the right size...

    That is a box.

    Probably not the right size box

    And I hate ductboard.

    A sheet metal box of proper size sealed with mastic and externally 3 inch insulated if my preferred method..
  27. A box is the proper way to transition two joist...

    A box is the proper way to transition two joist bays.
  28. You need a vapor barrier.

    You need a vapor barrier.
  29. Dan I did not even look at that. Wow that is a...

    Dan I did not even look at that.

    Wow that is a lot of heat even for a 3700sqft house in Ohio.

    Also at 8tons of cooling, that is 462 sqft per ton. Might be grossly oversized on both but I am...
  30. If the ducts are sweating, the ducts are either...

    If the ducts are sweating, the ducts are either not sealed/insulated properly or the airflow is too low causing the ducts to be too cold. Or the humidity in that area is too high from not enough...
  31. Actually looking again at the picture the flex...

    Actually looking again at the picture the flex duct looks like it is mainly only sucking from the left size primarily as the duct connector looks to be directly at the bottom of the joists.

    I...
  32. That is an variable inverter system. I am not...

    That is an variable inverter system.

    I am not familiar with Lennox units enough but looking thru the manual, there are a multitude of setting in the control that will create greater comfort and...
  33. The ideal return duct static before the filter is...

    The ideal return duct static before the filter is .1 which you are over double that at .21

    Think of it this way, if your return static was at the same as your supply static. It would be .11return...
  34. It sounds like the units may be oversized. ...

    It sounds like the units may be oversized.

    However, one question is;
    Xc21 units should be two stage units with matching two stage variable speed furnaces, do you notice the unit starting in low...
  35. So you have about 200 square inches of duct...

    So you have about 200 square inches of duct opening going to about 157 square inch opening that is abruptly changing sizes. So yes that is not helping any. So you are losing over 25% of the air that...
  36. Sounds like you are having a house issue that may...

    Sounds like you are having a house issue that may be also combined with a duct issue.

    Some issues with the house are:
    Undercut doors do not return enough air from the closed off rooms. Need to...
  37. How big is the duct going to it? Is it flex or...

    How big is the duct going to it? Is it flex or hard pipe? How long?
  38. Variable speed units are great. I have had...

    Variable speed units are great. I have had variable speed blower in my house since the 1990ís.

    However poor duct design kills all parts of systems. So regret the contractor/installer you used, not...
  39. At .21 static on the return duct, shows your...

    At .21 static on the return duct, shows your return ducts/grills are undersized.

    Might want to have a contractor develop a plan to enlarge the return ducts/grills or add additional return.
  40. Most likely if you would like to try to reduce...

    Most likely if you would like to try to reduce the static pressure some. I would recommend to try a Honeywell MERV 8 4.5 inch filter and leave the pre filters out.

    A honeywell merv 8 4.5in media...
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    Never heard of a squeeze test. Heat exchanger...

    Never heard of a squeeze test. Heat exchanger metal is rigid and I got some strong hands but donít think I could see anything from a squeeze.

    Also how did he get enough access to squeeze the heat...
  42. In my area based on my areas costs, a evaporator...

    In my area based on my areas costs, a evaporator replacement is usually between 1/4-3/4 the cost of a new system. Depends on if the evaporator coil is still available from the factory and how proud...
  43. We cannot comment on cost as cost is directly...

    We cannot comment on cost as cost is directly related to cost of goods in your area, labor in your area, cost of doing business in your area, cost of living in your area, etc.

    First your preferred...
  44. This is why at my company we push testing static...

    This is why at my company we push testing static pressure and static drops across all components religiously.

    I have had evaporator coils that looked clean on the surface(someone may have surfaced...
  45. If the quote to clean the coil is with it in...

    If the quote to clean the coil is with it in place, you are wasting your money. The only way to properly clean it will be to remove it from the system and throughly clean it with foaming chemicals...
  46. Cleaning it in place is not going to get it clean...

    Cleaning it in place is not going to get it clean at all on a 4row coil fin pack.

    It would be best to at the minimum replace the evaporator coil. But given the age and the poor install, it might...
  47. Without proper zoning control and ductwork...

    Without proper zoning control and ductwork design, the basement is still going to be cold in the winter and frigid in the summer.

    If he cut the holes in the supply pipes going to the first floor...
  48. Too bad there is not a thermostat that would be...

    Too bad there is not a thermostat that would be set able to switch to backup gas at night and then switch back after bringing temp back up in morning to heat pump.

    I suppose it could be done with...
  49. That would be determined by your hvac technician....

    That would be determined by your hvac technician. Sorry this is not a diy forum.

    Have a great day
  50. Phm, Longer run time at a lower capacity which...

    Phm,
    Longer run time at a lower capacity which should reduce humidity if the unit is short cycling due to being oversized. But need to make sure the evaporator temp is set to lower number also.
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