Page 4 of 5 FirstFirst 12345 LastLast
Results 40 to 52 of 54
  1. #40
    Join Date
    Jun 2003
    Location
    Madison, WI/Cape Coral, FL
    Posts
    6,455
    Quote Originally Posted by jgriggs View Post
    Lennox
    XP21-048-230
    icomfort thermostat
    CBX40UHV-060
    16.2 SEER Rating

    XP16-048
    even heat on heat strips
    CBX32MV-060

    Still hoping for comments on the 2 proposed systems I listed above. Also, I had a contractor suggest the following two systems:

    3 ton 15seer luxaire heatpump acclamate system OR
    3 ton 17.65seer luxaire heatpump acclamate system


    These would both have the Acclimate Residential Communicating Control which looks like a really cool thing. Any thoughts on the reliability, functionality, or anything else on these units.

    I know posting prices isn't allowed, but am I allowed to ask if it makes sense to go with the second system if it's X amount of dollars more?
    4 ton unit; 2 stages; he said the unit is able to remove humidity; thermostat control can be set to do humidity control; VS blower; recommends ERV; recommends heat pump

    The idea of humidity control from a/c in SF only occurs when the a/c operates long enough to saturate the cooling coil and pan, actually exiting via the drain. At the end of the cooling cycle, any moisture on the coil and pan evaporates back into the home. There is typically 1-2 lbs. on moisture on the coil at the end of the cooling cycle. This require a minimum of 30 minutes of high speed cooling on most coils get any water exiting the pan. Get dehumidification in writting. There is an improvement moisture removal during moderate cooling loads but very little in the cool wet weather.
    Regards TB
    Bear Rules: Keep our home <50% RH summer, controls mites/mold and very comfortable.
    Provide 60-100 cfm of fresh air when occupied to purge indoor pollutants and keep window dry during cold weather. T-stat setup/setback +8 hrs. saves energy
    Use +Merv 10 air filter. -Don't forget the "Golden Rule"

  2. #41
    Join Date
    Feb 2011
    Location
    Lufkin, TX
    Posts
    24
    Beenthere, am I able to ask if the 17.6 SEER system is XXXX amount of dollars more than the 15 SEER system does it make sense to go with it?

    Like I said I know prices aren't allowed, but I'm not telling anyone the price of the 15 SEER system only that the 17.6 SEER system is being quoted as this much more.

  3. #42
    Join Date
    Jan 2004
    Location
    Lancaster PA
    Posts
    68,125
    Quote Originally Posted by jgriggs View Post
    Beenthere, am I able to ask if the 17.6 SEER system is XXXX amount of dollars more than the 15 SEER system does it make sense to go with it?

    Like I said I know prices aren't allowed, but I'm not telling anyone the price of the 15 SEER system only that the 17.6 SEER system is being quoted as this much more.
    No, cost comparisons are pricing questions. And most of us already know what our price difference is between a up to 18 SEER and a 15 SEER system.

    What an upgrade is worth is still determined by the contractor doing the work, and the area its being done in. Along with what your comfort is worth to you, and the budget you impose on yourself.
    Contractor locator map

    How-to-apply-for-Professional

    How many times must one fix something before it is fixed?

  4. #43
    Join Date
    Jul 2008
    Location
    Rochester NY
    Posts
    4,732
    Wow, sounds like an awesome house! 4 tons of heat sounds EXCESSIVE unless it gets colder there than upstate NY. I audited a 2500 sf sprayed home last week, 1100 cfm50. Recommended heat: fart. Size: candle

    Did you orient and design overhangs and windows w regard to sun? If so, might want to contact a HERS Rater about sizing, and getting that place Energy Star rated. Get below 80 and ya got some bragging rights.

    Generally jumping eff levels increases some things other than energy use. Servicability and durability tend to be better when you get better equipment.
    Which makes more sense to you?
    CONSERVATION - turning your thermostat back and being uncomfortable. Maybe saving 5-10%
    ENERGY EFFICIENCY - leaving your thermostat where everyone is comfortable. Saving 30-70%

    DO THE NUMBERS! Step on a HOMESCALE.
    What is comfort? Well, it AIN'T just TEMPERATURE!

    Energy Obese? An audit is the next step - go to BPI.org, or RESNET, and find an auditor near you.

  5. #44
    Join Date
    Feb 2011
    Location
    Lufkin, TX
    Posts
    24
    tedkidd, we have 24" overhangs on the whole house. We also have a front porch that covers 2 of the front windows and a back porch that covers two of the back ones.

    The other two in the front that aren't covered are only exposed to the sun for a very short period of the day as the sun sets.

    The three windows in the back that aren't covered will only be exposed in the morning for a couple of hours and if needed we will put some shade trees back there.

    Two different places that did actual Manual J's on the house came up with different size units. One said 3 tons and one said 3.5 tons.

  6. #45
    Join Date
    Nov 2010
    Location
    Schertz, Texas
    Posts
    5

    Load calcs!

    As far as the contractors you are speaking with: What kind of load calculations are they running? Are they based off of the Manual J 8th edition? Are they something that is reliable like Elite software or Wrightsoft? Has he actually showed you the results of the load calculations and showed you why the sensible gain on the house is justified by the sensible output of the unit at Lufkin's design conditions (95-77@ at least 50% relative humidity?)? I don't see a lot of guys actually doing that in my area, and it's something that should be standard as far as I'm concerned.

    As far as that goes, I have heard very little against Lennox, except that you have to have a guy that's used to Lennox working on them.

    Lennox does make a 3 ton 2-speed in both systems you are looking at:

    XP21-036-230
    XP16-036-230

    Don't assume that you need a larger unit as opposed to a smaller, see Teddy's comments about humidity control in the home and run-time, and Manual J states:
    "However, slightly undersized cooling equipment-by a margin of 10% or less-may actually provide more comfort at a lower cost..."

    Unfortunately, on 2-speeds, you go up by full tons, so that will be a judgment if it comes out close.

    In Texas, you are not really supposed to size to the heating side of the unit, although I bet you'd be close anyway. Just some food for thought. I'd hate to see you have moisture problems in your brand new house, although admittedly a 4-ton 2-speed may be fine, but if you can get away with smaller, it may cost you less consistently as it runs, and may provide better moisture control and comfort as you go along...

  7. #46
    Join Date
    Jun 2003
    Location
    Madison, WI/Cape Coral, FL
    Posts
    6,455
    Quote Originally Posted by efficiency guy View Post
    As for thought. I'd hate to see you have moisture problems in your brand new house, although admittedly a 4-ton 2-speed may be fine, but if you can get away with smaller, it may cost you less consistently as it runs, and may provide better moisture control and comfort as you go along...
    A well built home like this with a very limited cooling load will not get much humidity control from the a/c. Save the two speed up charge and get the whole house dehu instead addon instead. You will have much better %RH control with or without any cooling load.
    Regards TB
    Bear Rules: Keep our home <50% RH summer, controls mites/mold and very comfortable.
    Provide 60-100 cfm of fresh air when occupied to purge indoor pollutants and keep window dry during cold weather. T-stat setup/setback +8 hrs. saves energy
    Use +Merv 10 air filter. -Don't forget the "Golden Rule"

  8. #47
    Join Date
    May 2010
    Posts
    1,295
    When I see lennox units I go, "winning"

  9. #48
    Join Date
    Feb 2011
    Location
    Lufkin, TX
    Posts
    24
    Quote Originally Posted by beenthere View Post
    No, cost comparisons are pricing questions. And most of us already know what our price difference is between a up to 18 SEER and a 15 SEER system.

    What an upgrade is worth is still determined by the contractor doing the work, and the area its being done in. Along with what your comfort is worth to you, and the budget you impose on yourself.
    Thanks beenthere. That's why I wanted to ask before I posted the price difference.

  10. #49
    Join Date
    Jul 2008
    Location
    Rochester NY
    Posts
    4,732
    Quote Originally Posted by ZeroTolerance View Post
    When I see lennox units I go, "winning"
    Lol.
    "that's hysterical" says Lizzy, my better half.
    Which makes more sense to you?
    CONSERVATION - turning your thermostat back and being uncomfortable. Maybe saving 5-10%
    ENERGY EFFICIENCY - leaving your thermostat where everyone is comfortable. Saving 30-70%

    DO THE NUMBERS! Step on a HOMESCALE.
    What is comfort? Well, it AIN'T just TEMPERATURE!

    Energy Obese? An audit is the next step - go to BPI.org, or RESNET, and find an auditor near you.

  11. #50
    Join Date
    May 2010
    Posts
    1,295
    lol that guys a MESS!

  12. #51
    Join Date
    Jul 2008
    Location
    Rochester NY
    Posts
    4,732
    Or a marketing genius.
    Which makes more sense to you?
    CONSERVATION - turning your thermostat back and being uncomfortable. Maybe saving 5-10%
    ENERGY EFFICIENCY - leaving your thermostat where everyone is comfortable. Saving 30-70%

    DO THE NUMBERS! Step on a HOMESCALE.
    What is comfort? Well, it AIN'T just TEMPERATURE!

    Energy Obese? An audit is the next step - go to BPI.org, or RESNET, and find an auditor near you.

  13. #52
    Join Date
    Feb 2011
    Location
    Lufkin, TX
    Posts
    24
    So let's say we have 3 different contractors who offer Lennox, Trane, and Frigidaire that are all reputable and do the same quality work on their installations....you would prefer the Lennox?

Page 4 of 5 FirstFirst 12345 LastLast

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Comfortech Show Promo Image

Related Forums

Plumbing Talks | Contractor Magazine
Forums | Electrical Construction & Maintenance (EC&M) Magazine
Comfortech365 Virtual Event