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  1. Replies
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    Appear to be. Had stuck contactor a few months...

    Appear to be. Had stuck contactor a few months ago and the service tech said the coils looked clean.
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    Delta T change

    Lately it has been running continous and not keeping up. I live in NC and the past few weeks have been around 90 with the thermostat set at 78 it will only cool to 80. Using a crude temperature...
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    Dumb Question about to launch... Can those...

    Dumb Question about to launch... Can those ratings go down as the unit ages? What factors cause that (compressor, blower motor, lines and coils build up)? I appreciate the information.
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    RPKA-036JAS and RBHA-17J155FBA is the pairing. ...

    RPKA-036JAS and RBHA-17J155FBA is the pairing. Thanks! :-)
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    567

    Agreed. Any ideas on what may have caused it? ...

    Agreed. Any ideas on what may have caused it? Stuck contactor outside? Low Freon pressure (thought this would freeze up everything)?
  6. Replies
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    Rheem RPKA-036JAS frozen line?

    I just relocated from Florida and my brand new Carrier Infinity system to NC with a 20 year old Rheem RPKA-036JAS and RBHA-17J155FBA. Want to change it out after being spoiled by the new technology...
  7. Thanks everyone. My parents have decided to...

    Thanks everyone. My parents have decided to proceed with a 15 SEER Goodman with the 10 year parts/labor warranty. There is a rebate with the power company and the cost is manageable. This will be...
  8. So it sounds Haier maybe not be a Cadillac of the...

    So it sounds Haier maybe not be a Cadillac of the HVAC world. So is it possible the leak could be in a joint possibly coming into the unit with absolutely no issue on the coil? Any ideas on what to...
  9. Haier Unit A/H leaking bad... what to do?

    My parents live in Florence SC and have a Haier unit about 5-6 years old (I guess). They have been having issues starting in January and the tech stated low in refrigerant. 2 months later the leak...
  10. Replies
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    RHEEM RBHA-17J15SF8A Filter

    I am moving from Florida to NC and purchased a home with an older HVAC. It is a RHEEM RBHA-17J airhandler with the 3 ton coil. I have no idea what size filter goes in the unit. Also does anyone...
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    Static Pressure Decrease????

    I just got a new carrier infinity installed a few weeks ago and the static pressure was 0.36 @ 1008cfm. It is now 0.28 @ 1008cfm. How is that possible? Could I have developed a leak in my duct? ...
  12. Replies
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    Is the lower cfm just because of the comfort...

    Is the lower cfm just because of the comfort setting to minimize temperature swings? It is a humid day today and the dehumidification feature kicked in. It slowed low speed cfm down to the upper...
  13. I am not a carrier guy but a carrier owner. I...

    I am not a carrier guy but a carrier owner. I have learned the following but maybe wrong so feel free to double check me.

    The Infinity & Thermidistat controls are designed to control humidity. ...
  14. We are in a heat wave so 3Tons is well sized. ...

    We are in a heat wave so 3Tons is well sized. With the first stage at a little over two I think my unit will work out nicely throughout the year. I will post kwh change next month because after...
  15. I am no professional but was wondering if your...

    I am no professional but was wondering if your friend has the same size unit? Same type of unit?
    Do you and your friend have the same attic insulation/venting?
    Does your temperature remain...
  16. Replies
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    1,235

    Optimal cfm for 3 Ton Infinity

    I have a new Carrier Infinity a/h (FE4) and controller with a performance (25HPA6) outdoor unit. It is a 3 Ton system and I was wondering about the cfm? It doesn't go above 1008 even with the...
  17. It has been in for over a week and wow. I...

    It has been in for over a week and wow. I increased my return and can't even hear it running in the house. My static pressure is around 0.19 on low speed and below .40 on high speed. It maintains...
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    High Speed is 1008 cfm @ 0.36 static pressure and...

    High Speed is 1008 cfm @ 0.36 static pressure and 829 rpm.
    Humidity is set @ 52 and currently 46%.
    Low Speed is 735 cfm @ 0.19 static pressure and 608 rpm

    My house is 10 years old (pretty good...
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    Thanks for the replies. My sales rep is planning...

    Thanks for the replies. My sales rep is planning on coming out next week and I just wanted to understand all the options that will be there. I bought the unit for cost savings and the rebates so of...
  20. Replies
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    Is that setting in the air handler or thermostat?

    Is that setting in the air handler or thermostat?
  21. Replies
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    It is programmed for 78/68 until 6:00 then 77/68...

    It is programmed for 78/68 until 6:00 then 77/68 and final 9:00 is 76/60 with it in full auto. I just hope in high cool it will push closer to 1200cfm or at least 1100. From what I have read, the...
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    Yes. In stage two it should be a full 3Tons and...

    Yes. In stage two it should be a full 3Tons and stage 1 is backs up to like 2.1 or something (the air handler should follow). The lower stage is for dehumidification by increasing run times at a...
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    I was getting a 22 degree drop across the coil...

    I was getting a 22 degree drop across the coil and when he was checking it out. I am just concerned with the cfm being lower than "standard" that it would effect my overall cooling. I don't want a...
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    They just installed it yesterday so I will see...

    They just installed it yesterday so I will see how it goes because after the duct work some balancing is also needed. They did a bunch in one day. How about the 1005 cfm? That is 335 cfm/ton and...
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    Carrier Infinity CFM & Stage Selection

    I just had a 3 Ton carrier Infinity system installed and have some questions about how it runs. It replaced a 2.5 Ton Rheem and duct work was performed to increase cfm capacity.

    Anyway:...
  26. I have decided to get off the extra money and go...

    I have decided to get off the extra money and go two stage infinity with the performance outdoor unit. A big investment but I think it is a wise choice. Thanks everyone for your input and help on...
  27. Replies
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    Its always ran a pretty good bit but lately it...

    Its always ran a pretty good bit but lately it has been more than usual. I spoke with another contractor and he says 95 is their design temperature and he is only 40 miles away. My light bull has...
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    A roofer is who I called and they can discuss...

    A roofer is who I called and they can discuss your options. I have read bad things about electric attic fans catching fire and what not but have heard great things about the new solar ones. A...
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    The first question was is 95 a fudged number or...

    The first question was is 95 a fudged number or actual number. The design temperature in my area was 92 but I know that we hit 95 for a few months. I also know that my ac has not been able to keep...
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    I am now set on a 3ton after numbers have been...

    I am now set on a 3ton after numbers have been changed to a 95 degree design temperature. Does anyone know the current draw of an 25HPA636 on first stage and second stage. I was told it is 60%...
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    Thanks! This makes sense. Sense my new a/h will...

    Thanks! This makes sense. Sense my new a/h will be much longer it will pretty much blast right into the 45s with no "runway". I guess if I stay in this configuration turning vanes are a must.
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    I can not believe no one has responded to this. ...

    I can not believe no one has responded to this. I am assuming this is more of a preference thing than performance.
  33. So the final consensus is two stage will be the...

    So the final consensus is two stage will be the way to go if the budget will allow. The XP-17 controller is solid and comparable to the Infinity (PC vs MAC type). The single stage unit would...
  34. Replies
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    Yeah unfortunately money is an issue. I think...

    Yeah unfortunately money is an issue. I think everyone agrees the 3T 2 Stage is the way to go but I can save a bunch of cash (20%) going single stage. One is top of the line carrier (DS) and the...
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    Leaving my unit horizontal hanging in garage and...

    Leaving my unit horizontal hanging in garage and assuming the max 3 Ton unit (1200 or so cfm) does this installation need turning vanes or do the two 45s do a good enough job?
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    My current 2.5 T runs a pretty long time when...

    My current 2.5 T runs a pretty long time when temperature surpasses the design temp. So you are suggesting single stage 2T or dual stage 3T?

    Also if I do get my heat load down to 2T and my unit...
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    Vertical vs Horizontal Hanging Mount???

    My current air handler is hanging in garage horizontal. It has a 90 on the supply to return to the attic (two 45s). I have been told the unit would operate better being mounted vertically. Is the...
  38. What is TXV or TDR & should it be installed with Lennox XP-17?

    I am not an HVAC guy but I am a relay technician so I am assuming TDR is a time delay relay that maybe associated with defrost or an extended run on the air handler after T-Stat is satisfied.
    I am...
  39. Replies
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    2 stage versus single stage for cooling

    I am buying a new heat pump and don't know if single stage or dual stage is the way to go. My house requires 2.5 Tons and got quotes for a 2.5 Ton single stage and 3 Ton dual stage unit. Both have...
  40. The carrrier two stage performance and infinity...

    The carrrier two stage performance and infinity (T-stat & Air Handler) are 15% more on cost.
    3495707 Active Systems PERFORMANCE 16 PURON HP CARRIER AIR...
  41. Never thought of the need for a mini-split. I...

    Never thought of the need for a mini-split. I had bought a portable ac last year to help with the cooling in my master bedroom but to cool the whole house from one location or two seems less...
  42. OK. Today is hot and I want to see if my AC would...

    OK. Today is hot and I want to see if my AC would be OK increasing tonnange by a half.
    Manual J performed for 93 degrees (not sure of inside air used) equals 2.5 tons
    Today = 96-98 degrees
    Inside...
  43. So the icomfort is between the thermidistat and...

    So the icomfort is between the thermidistat and infinity controller? It is closefr to the infinity on basic theory and operation? Running in stage one for that duration would probably be humidity...
  44. I agree it is a better unit but I just don't...

    I agree it is a better unit but I just don't think it is 15% better. I maybe wrong and the Infinity appears to be so smart it sets itself up, automatically adjusts for optimization and...
  45. Thanks Kevin. I am just wondering if it is worth...

    Thanks Kevin. I am just wondering if it is worth the extra 15%. It is a little lower efficency at second stage but I assume on first stage I would save money (1.8 Ton or so compared to 2.5). I...
  46. Lennox XP-17 Versus Carrier Infinity/Performance

    I am upgrading my ac and have two contractors to choose between. Both seem to be very capable of installing but two very different quotes. I am stuck. Please provide your insight on the two...
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