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  1. 79 down to 73 in an hour on the hottest day? ...

    79 down to 73 in an hour on the hottest day? Talk about seriously oversized.

    You said after the second person left that it wasn't cooling down the house as fast as you expected, but didn't...
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    Sounds like the ductwork isn't insulated and is...

    Sounds like the ductwork isn't insulated and is in close contact with the slab. If you were to measure slab temperatures you might find that the leaving air temp at the problem registers is close to...
  3. Sorry, but something doesn't add up with the...

    Sorry, but something doesn't add up with the description and pictures. The last time I saw a blower and coil that bad was the aftermath of a flooded house that had been left empty for months. I...
  4. I have the exact same panel on my generator. One...

    I have the exact same panel on my generator. One of the breakers feeds a sub-panel that has another 20 circuits on it that feed all of what I consider critical circuits in the house. This is...
  5. Am I reading the question correctly? Are you...

    Am I reading the question correctly? Are you asking if you can use the hydronic water heater to directly supply potable/drinking hot water by adding diversion valves to use either the hybrid or the...
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    A lot of information missing here that might give...

    A lot of information missing here that might give us a chance of figuring out what might be going on. All we really know is that we have a new home in Kentucky on a crawl space with a zoned HVAC...
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    Keep in mind when getting quotes from businesses...

    Keep in mind when getting quotes from businesses out of town that their concern with word of mouth referrals is probably not going to be as high up on their list as the local person. Their concern...
  8. I don't see any evidence of corrosion in the...

    I don't see any evidence of corrosion in the pictures. I've been on calls where the fins were totally gone on the bottom 3-5" of the coil with nothing left but the copper tubes and they still...
  9. The question you're asking is whether or not...

    The question you're asking is whether or not installing a different brand equipment will cause issues as far as how well it works with the other two units in your home. That's an almost impossible...
  10. Read the warranty info on your equipment. They...

    Read the warranty info on your equipment. They usually state very clearly that they will not cover warranty claims that arise from misuse or abuse, both are going to happen if you run the equipment...
  11. Look at units designed to be used/carried in...

    Look at units designed to be used/carried in mines. They are usually designed to do exactly what you need.
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    The clue to your potential problem is not that...

    The clue to your potential problem is not that all of a sudden, after 14 years, your circuit breaker isn't the right size. The clue is that after 14 years something has changed in how the equipment...
  13. Is the problem in cooling or heating mode or...

    Is the problem in cooling or heating mode or both? What thermostat do you have?

    The noise you are describing from the condensing unit can sometimes be associated with the unit defrosting in...
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    The power company has a problem with their side...

    The power company has a problem with their side of the system for sure. It's hard to get them to look for something that's intermittent. My experience is they only tend to get excited when...
  15. Thread: Training

    by firecontrol
    Replies
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    521

    The tech school I went to had a lab full of all...

    The tech school I went to had a lab full of all different kinds of equipment so you could get your hands on things running. The instructor would put faults/problems into each type of equipment so we...
  16. A heatpump water heater needs space around it to...

    A heatpump water heater needs space around it to operate properly. The unit extracts heat from inside the home to heat the water. If the unit is located in a small cramped space with no access to...
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    512

    If you got a quote for a new AC system install it...

    If you got a quote for a new AC system install it should mean someone came to your home to look over what you have now. An outdoor condensing unit sitting on dirt and surrounded with tomato plants...
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    421

    Is the hum coming from the air intake itself or...

    Is the hum coming from the air intake itself or through the ceiling that just happens to be near the air intake?

    Different air speeds can sometimes make a return air grill hum or make noises. The...
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    481

    A floor mounted return on the second floor is not...

    A floor mounted return on the second floor is not doing you much good in AC mode. Hot air rises, and if it's an open stairwell from the 1st floor the upstairs is not only gaining it's own heat it's...
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    The picture is a little fuzzy about what is...

    The picture is a little fuzzy about what is actually being described.

    Is there two separate units in the home (1 for down and 1 for up) or is there just one?

    If there is only 1 unit, where is...
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    Like it was mentioned, if you have maintenance...

    Like it was mentioned, if you have maintenance logs for the unit detailing everything that's ever been done to in in 12 years and they show it's been well cared for you're in luck. If you ask around...
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    What does your hydronic heating system use for...

    What does your hydronic heating system use for radiation? What is it made of as far as metal materials? How old is it?

    Boiler selection is somewhat dependent on all the above factors for...
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    Story behind the picture: Joe, who lives in...

    Story behind the picture:

    Joe, who lives in a city where water rationing has been going on for years now, was talking to his friend Al (who works in the HVAC field) one day and asked him what he...
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    Portable dehumidifiers don't like to run in cold...

    Portable dehumidifiers don't like to run in cold areas. Usually in the manual it will state what minimum temperature the manufacturer would recommend the unit be exposed to when running. Is this...
  25. Could you clarify what you mean by you want to...

    Could you clarify what you mean by you want to change to electric heat. First you say electric is cheaper than propane and then you comment on the electric coils the one contractor suggested by...
  26. Could you clarify what you mean by you want to...

    Could you clarify what you mean by you want to change to electric heat. First you say electric is cheaper than propane and then you comment on the electric coils the one contractor suggested by...
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    My Imperial Eastman analog gauges are still going...

    My Imperial Eastman analog gauges are still going strong after almost 20 years. New hoses every 2 years and change out the internal seals every 5 years or so. The vac gauge I use is an OLD analog...
  28. Thread: Slab Leak?

    by firecontrol
    Replies
    8
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    367

    I'm thinking it is just a coincidence. I'd check...

    I'm thinking it is just a coincidence. I'd check the toilets in the home and any outside faucets.

    Unless they use some kind of powered machine to install the new piping it would be very hard...
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    That's under a mobile home. The hole looks like...

    That's under a mobile home. The hole looks like it was made by a four legged home invader that I'm going to bet is living in the duct or at least is taking advantage of the free heating and cooling...
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    What I think would get you the best bang for your...

    What I think would get you the best bang for your buck would be to better insulate the attic to at least R-40 and better insulate all the ducting that is located up there. Look at the ducting and...
  31. You have concerns, which is good. If the...

    You have concerns, which is good. If the contractor you choose is positive that either will work fine then have them put their assurances in writing. Say, if the variable speed doesn't do an...
  32. From the description of the symptoms/issues it's...

    From the description of the symptoms/issues it's definitely a negative air pressure issue within the home. The best way to get the answers you are going to need (to know how to proceed) is to get...
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    Can you describe where the outdoor units are...

    Can you describe where the outdoor units are located? Are they out in the open or enclosed in a fenced in area etc.?

    Have you monitored temperatures in each of the rooms throughout the day?
    ...
  34. I would suspect that adding a booster fan to a...

    I would suspect that adding a booster fan to a properly sized and installed system would not make enough difference at the air handler that you could measure to any certainty.
    Opening and closing...
  35. Adding a second boiler should be easily done. ...

    Adding a second boiler should be easily done.

    The water heater is another story. You don't want the unused tank to sit there for maybe months/years with water not circulating through it as bad...
  36. Build an insulated box around the units in the...

    Build an insulated box around the units in the attic. Make sure it's easily removed for service.

    If you already have furnaces in the attic, just replace them with new furnaces and if they're...
  37. At a minimum the uphill edge of the curb flashing...

    At a minimum the uphill edge of the curb flashing should be under the shingles above it, we even try to get the sides under if possible. Even if they put a bunch of sealant under the curb flashing...
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    You're hesitant to use a 2 stage because you're...

    You're hesitant to use a 2 stage because you're worried about it loosing cooling to the ductwork in the attic, but then say that you are thinking of running the fan continuously to recirculate air...
  39. Contact SoCal Edison and ask if there is another...

    Contact SoCal Edison and ask if there is another connection in their box that could be used to disable the blower when they have your AC turned off. Utilizing that function would still require you...
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    Do you have a central dehumidifier? If connected...

    Do you have a central dehumidifier? If connected to the ductwork for the HP they will turn the fan on to circulate air.
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    I'm curious why there is a damper in that return.

    I'm curious why there is a damper in that return.
  42. The only real way to tell how any size...

    The only real way to tell how any size (thickness) of air filter will work in your system is to measure total static pressure of the system with each option. The thing to consider with different...
  43. This is definitely one of those where pictures of...

    This is definitely one of those where pictures of the outdoor setup would be great. The more pics the better with plenty of detail of all components.
  44. You know that this is a problem. Your builder...

    You know that this is a problem. Your builder knows it's a problem by his own statement. So.......... it's a problem that needs to be addressed.

    The whole purpose of the pan and why it's...
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    468

    One critical bit of information missing on the...

    One critical bit of information missing on the original post. Did the contractor add any refrigerant when he was there on the first visit? Were you home during the service call and did he run the...
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    My advice has always been that ductwork...

    My advice has always been that ductwork (especially in an attic) should be insulated to at least the R value that the attic itself is insulated to, if not better. If it's not insulated I would also...
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    If everything inside the compartment was equally...

    If everything inside the compartment was equally wet I would suspect that your home is under a negative pressure and the intake pipe for the furnace (which is cool because the AC is running) is where...
  48. I'll throw out an idea that is waaaaay out of the...

    I'll throw out an idea that is waaaaay out of the box.

    See if you can find out what the average ground temperature is at your location at about 6-8' down.

    IF you have the foot print of land...
  49. Have you tried manually turning on the fan (via...

    Have you tried manually turning on the fan (via the thermostat) when you're running the exhaust and does it resolve the issue of the negative pressure in the house? Just curious if you've already...
  50. With the open stairwell the cooler air from...

    With the open stairwell the cooler air from upstairs is going to head for the first floor anyhow, so I'd basically turn the downstairs either to a lot warmer temp than normal or turn it off all...
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