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  1. Replies
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    I have adequate return air upstairs for 5 tons....

    I have adequate return air upstairs for 5 tons. Prior to the new unit all were on a single zone with all returns upstairs. No returns in basement. New geo unit is 4 ton two speed compressor. Old unit...
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    I think that may be the problem. They installed a...

    I think that may be the problem. They installed a 17 x 20 return. We are looking to install a grill with dampers so we can throttle that back some. Otherwise great equipment and even better great...
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    Zoning Issue Need Advice

    Just installed a new Waterfurnace geo unit as a replacement for a worn out LP gas furnace and AC. Home is a single story ranch with full finished basement. During the new install we zoned off the...
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    My thoughts are: 1. We plan to stay put for many...

    My thoughts are:
    1. We plan to stay put for many years (we were in Paducah 16 yrs)
    2. Utility rates are not going down in the future
    3. Somewhat larger investment up front with Geo but I think ROI...
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    UPDATE: We are moved in!!! Found out our LP usage...

    UPDATE: We are moved in!!! Found out our LP usage is 800 gal per year average. I have had 2 quotes for Geothermal and both were for Waterfurnace 5 series 4 ton units. With rebates it is...
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    New House Blower Door Test

    Just moved into our new house. Prior to taking possession had a blower door test and energy audit performed. 2823 sq ft (conditioned) ranch with a walk-out. Two unconditioned spaces in basement...
  7. This is the Ask Our Pro's forum. In order to post...

    This is the Ask Our Pro's forum. In order to post a response here, you must have verified qualifications and have been approved by the AOP Committee. You may ask a question by starting a new thread....
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    Haven't taken possession yet but expect to soon. ...

    Haven't taken possession yet but expect to soon. I think the numbers work for Geo if it can be done in the twenty five-thirty range. I know from my time on here that LP is a pretty expensive...
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    I should say that the estimate 1200-1300 a year...

    I should say that the estimate 1200-1300 a year was using a GSHP. I will say I put in my info for Paducah and the calculator was very close. I just have never owned a home using LP. My experience...
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    Heat Pump or Geothermal in St. Louis

    I am moving to St. Louis, Missouri area from Paducah, KY. We have bought a house single story full brick ranch built in 2000 with full walkout basement. 2228 sq ft main level and another 2228 sq ft...
  11. Techs arrived today and left without a solution. ...

    Techs arrived today and left without a solution. They think there is water being left in the furnace and not draining. Drain lines are clear so they left to return tomorrow. Flame in sight glass...
  12. Yes they are both 58MVB's. I checked the...

    Yes they are both 58MVB's. I checked the downstairs furnace (which is working fine) and got these values:
    low fan 665 cfm-0.13
    med fan 972 cfm-0.22
    high fan 1171 cfm-0.29

    The service guys are...
  13. I have a 2 new 58MVB80's installed in June. I...

    I have a 2 new 58MVB80's installed in June. I have a similar problem with my attic unit. Throwing a 33 code only occassionally, usually during high stage heat call. Otherwise fine. Techs have...
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    New Carrier Furnace Problem

    We had 2 new Carrier HVAC HP/Condensing Furnaces installed in May. Everything was fine but due to the high temps at that time it was impossible to fully check out the heating. Well it is Saturday...
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    Been running today with the fan on Auto and...

    Been running today with the fan on Auto and humidity is maintaining what the stat calls for 46-47%. So do I have an issue or is it alright? If I have constant low fan humidity increases. I did...
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    New Carrier Install is this OK????

    2 new duel fuel Carrier 3T HP's installed 2 story home infinity controls on both. One in basement zoned for basement and 1st floor. Second attic install for 2nd floor. Cooling is very good for all...
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    New Carrier Infinity install Questions

    Installation of new infinity system wrapping up. Looks like they did a nice job. This was a old 23 yo York system replacement. I had a 2 ton unit serving the basement and a 3 ton unit serving our...
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    So no real difference? I had noticed that one...

    So no real difference? I had noticed that one coil offered a little more efficient cooling and the other was better at heating. Not by much though.
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    OK but what is the difference between the 4821A...

    OK but what is the difference between the 4821A and the 4321A coils? I am buying 2 systems they are quoting the 4821A coils in both a horizontal and vertical config.
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    Carrier CNPH*4321A* or CNPV*4821A* Coil

    I was looking through the AHRI site for qualifying Carrier systems. My quotes are in and I have put a deposit down. They are going to order my system any day now. I have been quoted 25HPA636A30,...
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    We have lived here 13 years and the only time I...

    We have lived here 13 years and the only time I turn it on is in Jan/Feb when the temp down there gets fairly cool. I set the stat at 60. The same in the summer, in late July/Aug it starts to get a...
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    Yes they sit side by side in the same room. The...

    Yes they sit side by side in the same room. The dealer is returning tomorrow to remeasure and do the calcs. Do you think this is a good idea or should I keep the old system?
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    No according to the Carrier website it is a 2...

    No according to the Carrier website it is a 2 stage scroll with a 16.5 seer/9.5 hspf rating. The infinity HP is 19 seer / 9.5 hspf.
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    It is 2 stage scroll compressor

    It is 2 stage scroll compressor
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    Zone or No Zone

    We currently have 3 completely seperate HVAC units in our home. One each for the upstairs (3 ton), downstairs (3 ton), and basement (2 ton). They are 20+ year old yorks. We are in the process of...
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