Carrier Infinity Compressor life expectancy?
david_cary
9 years ago
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mike_home
9 years agotigerdunes
9 years agoRelated Discussions
Carrier Performance AC & Carrier Infinity Furnace Pricing
Comments (21)Wow. I feel like a total sucker now. I have 2 estimates for Carrier equipment, each from a Northern NJ contractor: Estimate 1: AC 2.5 Ton 15 SEER 24APA530 Coil CNPVP3017ATA Furnace 70kBTU/80% 58CVA070-14 Honeywell Vision Pro Thermostat Honeywell HE-265 Humidifier Aprilaire 2200 air filter Replace chimney liner $10,347 Estimate 2 Same ac Same coil Same furnace Replace chimney liner Thermostat unknown no filter no humidifier $10,056 Estimate 3 (Lennox) AC: 2.5 ton 13 SEER (Variable Speed) Coil: C33-31 Furnace: 90k BTU 80% AFUE Thermo: Honeywell PRO 4000 Aprilaire 400 Humidifier Chimney liner replacement $9,610 These include installation into existing forced hot air duct system....See Morecarrier infinity greenspeed heatpump
Comments (40)Ok, I am sorry for bugging yall again... but I do appreciate you all helping me. I have been thinking. How does this sound, and tell me please if I need something else? I am going to ask for the Infinity Gas furnace- and matching control (thermostat?) as I said, I really don't even know what to ask for but in doing research and carrier left me a brochure I was reading through it, and see some nice reviews about it. For now I am not concerned about a heat pump, or even an air conditioner. However, is there a such thing as an air conditioner that matches the infinity gas furnace? Please, I know yall base answers on best product for least amount of $, however, I have only one shot to get the funds for this furnace. and I want the best. the best because I know it will last me a long time. I do not care about bells and whistles, No. I just want the best. and as before, tere will have to be new ducts, vents, and anything else that goes with a new system. Is one stage better than 2 stage? what is variable speed? what is a box filter? what is a condensing fan? please, please help me figure this one out, so at least I will know some of what I am asking for and not just accepting what they are telling me? and what seer? of furnace should I ask for or need? thank you in advance. I am sorry for being a bugger....See MoreCarrier Infinity Heat Pump & AC Quote in northern VA
Comments (40)12" return is almost definitely too large for the basement. I have a 6" return in my basement, and I have actually found it to draw ~200-240 cfm (using a barometer) -- plenty in my case with just a few supply outlets. In your case, I have no way of knowing for sure, but I assume it's piped directly (or near) to the inlet of the furnace blower compartment, in which case there is a lot of pressure and it's sucking in a lot of air and making the basement quite negative (not a good thing). So your basement return in that state may have been drawing close to, if not more than, half of the return air the entire system requires. Is the basement floorplan open to the rest of the home or closed off? If typically closed off, I wouldn't be surprised if the basement door had a tendency to close itself when the system was operating. I suppose putting cardboard over half of the grille is one way to reduce its intake capacity. Your older furnace does not (presumably) have a variable speed blower that will vary its RPM in order to maintain a specific CFM setting. That means that while you are noticing more airflow from the rest of the returns throughout the home, in totality your system is receiving less airflow -- no, not a good thing considering your ductwork is likely undersized to begin with. You have decreased its return capacity. To get the SAME (total) airflow from the rest of the returns throughout the home that were not previously drawing as much air generally requires the system to operate at an increased static; with older PSC type blower motors (non variable-speed), this results in decreased airflow. Hence variable speed motors are often termed "constant CFM" as they can adjust (increase) their speed to maintain a constant airflow (cfm) when subjected to as much as 0.8-1.0" of external static pressure (vs. conventional blowers max. of 0.5", which many duct systems are nowhere close to achieving despite it being the standard "design" figure). You can think of the ESP number as a measure of resistance to airflow, in a sense. The fact that you say the (supply?) ductwork is now much warmer is both concerning and telling. It is unwise for me to say much more than that as I am not there to evaluate your system design and give an accurate assessment of the ductwork design/layout, etc. But it suffices to say, with the info you've provided us, your return ductwork is now more restrictive, which would exacerbate any existing airflow issues. You do say it met the set point without tripping the high limit. Please let us know how the system performs as it gets colder out and the system runs more often in its present state. I would like to ask what made you consider replacing the systems (and proceeding to get 8 proposals) in the first place? Are there functional problems with the existing equipment (besides most likely being oversized) or other comfort issues? By now we have at least established that it is likely the existing equipment is a bit oversized and the existing ductwork is marginal -- but that is (unfortunately) exceedingly common on most residential construction. Are you after more efficiency, better comfort, both? It helps us to help you when we know more about your current system's performance. Lastly, I would not factor online reviews into your decision too much. An air conditioner or furnace is not like most appliances (such as a refrigerator) in that the installation practices and quality can make or break even the best equipment selection. There is a good chance that many (but not all) of the negative reviews you read were due to installation errors. This post was edited by ryanhughes on Fri, Nov 22, 13 at 9:51...See MoreCarrier Infinity - any way to reduce defrost cost?
Comments (43)Reading this thread has reaffirmed my decision to upsize the Greenspeed per Carrier's recommendation based on my cooling load. I could have went either way: 3 or 4-ton with my heat load. Too bad they don't make a 3.5 ton, it would have been the perfect size. Last year's polar vortex in NY Long Island really pushed me into the 4-ton. The way I figure the unit will only go into defrost mode below 8-10F. I also have 300sqft of window space, three huge doors and a fireplace. No matter how much my thermal envelope is tightened there will still be leakage in this 75 year-old home. My biggest disappointment so far with the 4-ton is it only reduces its speed to 50% vs 40% for the 3 and 5-ton units. The information across the Internet is just plain wrong on that one. We're charting in brand new territory still, so hope I've added somewhat to the pool of information. Otherwise this unit is *way* better than my wildest expectations. The comfortability factor is way better than my single-stage and well worth the additional cost. I'd go even as far as to say perfect. We had a huge heat snap for two days 65% humidity and temps into the upper eighties still at 80F past midnight. I only used $3.15 for the entire day vs. almost $11 for a similar temp period last year. I also credit my new Sunrise windows with lots of the improvement. At full load the system was using approximately 1150W. It only went up to 70% usage for a very brief period at night. More importantly I could easily maintain rock solid 45% humidity at 73F. Not enough data to really extrapolate much else. The system is so quiet my neighbors asked why I hadnâÂÂt turned it on yet. :) The real test will be this winter though. I'll probably create a new thread to chronicle some of my observations. This post was edited by bsmith on Mon, Jun 2, 14 at 2:42...See Moredovetonsils
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