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  1. Replies
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    464

    Are you a technician?

    Are you a technician?
  2. Replies
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    184

    Just FYI - TXV means Thermostatic eXpansion...

    Just FYI - TXV means Thermostatic eXpansion Valve, so TXV valve is redundant.
  3. That's 10 years beyond the "best when used by...

    That's 10 years beyond the "best when used by date!"
  4. Replies
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    780

    Update: I went to the job Friday and recovered...

    Update:
    I went to the job Friday and recovered the refrigerant. I added some R-22 and pressurized the system with nitrogen to 575 PSI and closed the service valves. I did not isolate the coil from...
  5. The air conditioner cannot generate any water...

    The air conditioner cannot generate any water when it is off. Is there humidifier connected to your system that might have a water valve that does not shut off completely?
  6. Replies
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    356

    That is a lousy strategy. It will not save...

    That is a lousy strategy. It will not save energy. Just set the thermostat to a higher temperature to conserve energy.
  7. Do you have the manual for the thermostat? If...

    Do you have the manual for the thermostat? If not, you can find it online. Check each scheduled period to make sure it is not set for fan on. Some Honeywell thermostats have a "circ" mode to run the...
  8. Replies
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    426

    Poll: Instead of guessing at the problem you should...

    Instead of guessing at the problem you should call a tech to completely inspect your system. Most occupants blame the thermostat because that is what they see most often. Thermostats are rarely the...
  9. I haven't seen a Chrontherm in a long time. So...

    I haven't seen a Chrontherm in a long time. So long that I thought they weren't making them any longer.
    How old are the thermostats? Most Honeywell thermostats have a 5 year warranty. Do they have...
  10. A furnace is not needed. Your situation calls for...

    A furnace is not needed. Your situation calls for a fan coil unit and a condensing unit. Be sure to have the ducts inspected and determine that they are adequate for the house and equipment.
  11. WOW! That stuff sounds great. Where do I get me...

    WOW!
    That stuff sounds great. Where do I get me some of that?!
  12. It is the sound of refrigerant pressures...

    It is the sound of refrigerant pressures equalizing after the cycle. It is normal.
  13. Replies
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    96

    Furnaces are not rated in tonnage. They are rated...

    Furnaces are not rated in tonnage. They are rated by Btu input. Your's looks like a 105,000 Btu.
  14. Please clarify "air intake chamber tunnelled...

    Please clarify "air intake chamber tunnelled chute." Are you referring to a framed enclosure that is used for return air? There's nothing wrong with using that space for refrigerant pipes but some...
  15. I haven't measured velocity in these instances...

    I haven't measured velocity in these instances but there have been times when I could observe water blowing off the coil and removing the 3M filter solved it. I concluded it was a reduction in...
  16. Air velocity is what blows water off the coil....

    Air velocity is what blows water off the coil. Undersized ducts, dirty coil, dirty or restrictive filter are all possible causes.
  17. Replies
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    780

    No inspection. This is a company I worked for 20...

    No inspection. This is a company I worked for 20 years ago. Their salesman thinks equipment can be installed under stairs and in cubby holes.
    Now we get the work of fixing their crazy...
  18. Replies
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    780

    Really? Leak check- HOW?

    I can't pull the coil without demolishing the wall. How did they expect to service this?
  19. Replies
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    898

    I have not measured air flow in that instance....

    I have not measured air flow in that instance. However, on more than one occassion I have stopped the problem of water blowing off the coil by simply removing the 3M 1" pleated filter.
    I could...
  20. Thread: Wrong Diagnosis

    by kdean1
    Replies
    6
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    463

    Because every phone call I get, the customer...

    Because every phone call I get, the customer tells me their system needs freon. :grin2:
  21. Replies
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    452

    I have never heard of that test? Is it a test of...

    I have never heard of that test? Is it a test of the duct system or the refrigeration system? Why do they say you need it?
  22. Please read the words in red at the top of the...

    Please read the words in red at the top of the page - NO ​DIY ADVICE!
  23. And there's your problem. 28 in. hg is not a...

    And there's your problem. 28 in. hg is not a vacuum.
  24. Replies
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    218

    This is a classic air distribution problem. You...

    This is a classic air distribution problem. You need to have the duct system assessed before restricting part of it. Only someone at your location can check air flow to the bedroom AND whether you...
  25. Replies
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    445

    Inverter driven systems modulate their capactity...

    Inverter driven systems modulate their capactity to match the load which provides better temperature and humidity control at all outdoor temperatures.
  26. Replies
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    242

    Your house must be enormous to need 12 tons of...

    Your house must be enormous to need 12 tons of cooling! Your first actions should be to have the static pressure checked and then calculate the actual load of the house to match equipment to the load.
  27. Replies
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    This is pretty vauge. Are you saying he is a lazy...

    This is pretty vauge. Are you saying he is a lazy tech and wants to sell a new coil rather than actually look for reason for low suction pressure? Is he with your company or is he a competitor,...
  28. Replies
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    898

    No one has mentioned air filters yet. If it has a...

    No one has mentioned air filters yet. If it has a 1" pleated filter, take it out and the problem will be resolved. Those filters add so much resistance that the air velocity is increased to the point...
  29. Replies
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    445

    The mini split will be more efficient and more...

    The mini split will be more efficient and more comfortable.
  30. Replies
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    650

    Why not pressurize both sides?

    Why not pressurize both sides?
  31. Replies
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    875

    Not legally or safely.

    Not legally or safely.
  32. If you are pulling in insulation from the attic...

    If you are pulling in insulation from the attic it will surely pull in humid outside air. Have you considered a duct blaster test and a blower door test to measure leaks?
  33. Replies
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    445

    To verify how many indoor units are connected you...

    To verify how many indoor units are connected you can count the linesets.
    The High Heat unit is currently available only in single zone. Also it may be less expensive to use two 2-zone units at...
  34. Replies
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    445

    Ductless units will work just fine. Your...

    Ductless units will work just fine. Your contractor should be able to design what you need and size it properly.
  35. Replies
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    I have little confidence in WR products. I've had...

    I have little confidence in WR products. I've had problems with their thermostats and gas valves that were resolved by using a different brand.
    I'd check manifold pressure during operation first,...
  36. Replies
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    If done properly, the load calculations should be...

    If done properly, the load calculations should be close to each other. However some tend to exaggerate to build in more capacity than necessary because they think bigger is better. In fact, smaller...
  37. Replies
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    ^^^ I agree. Replace all the equipment. Be sure...

    ^^^ I agree. Replace all the equipment. Be sure to have the load calculated so you get the right size, not just what was there before.
  38. I cannot understand how the exhaust can exit...

    I cannot understand how the exhaust can exit BELOW ground level. I always run them above ground level.
  39. Thread: Airflow issue

    by kdean1
    Replies
    7
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    328

    It appears your new system is 5 ton capacity....

    It appears your new system is 5 ton capacity. What was the capacity of the old system? A big system will satisfy the thermostat faster which can result in less air delivered to the farthest rooms.
  40. Replies
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    If it is a variable speed motor, the cost to keep...

    If it is a variable speed motor, the cost to keep it on is very low.

    There's are positive and negative aspects to continuous operation.
    Positive - it helps alleviate higher temperature on the...
  41. Here's the error I got trying to open the load...

    Here's the error I got trying to open the load calc software - The address wasn't understood
  42. Replies
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    Or a swimming pool!

    Or a swimming pool!
  43. Replies
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    786

    That's a very low suction pressure. Ask yourself,...

    That's a very low suction pressure. Ask yourself, "Where is the refrigerant in the system when it acts that way?"
  44. Is this your own unit or are you a technician?

    Is this your own unit or are you a technician?
  45. Replies
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    465

    If he didn't check for acid then all he's trying...

    If he didn't check for acid then all he's trying to scare you into buying new equipment.
    Call a for a technician who doesn't make a commission.
  46. Replies
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    Did he detect acid in the system or is he just...

    Did he detect acid in the system or is he just trying to sell you a new system? A contaminated system can be costly to clean thoroughly. However there are steps which can be taken to clean the system...
  47. Replies
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    Reported as DIY. As were your other threads.

    Reported as DIY.
    As were your other threads.
  48. Don't forget - bigger is better! Get the biggest...

    Don't forget - bigger is better! Get the biggest air conditioner you can afford. You'll have plenty of reserve cooling.





    ::DD:
  49. I'm glad you replaced your contractor. Did you...

    I'm glad you replaced your contractor. Did you replace the contactor as well?
    :whistle:
  50. I would be more concerned with the size of the...

    I would be more concerned with the size of the ducts to match the equipment rather than replacing ductboard. Some contractors hate ductboard. If ductboard is properly built and installed there is...
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