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Carrier Infinity Furnace Review

The  Infinity 96 gas furnace from Carrier, is billed as one of the most intelligent and highest quality furnaces for consumers who simply want the best furnace for their indoor comfort! The Carrier Infinity 96 Furnace is just one part, the part that handles gas heat, of the full “Infinity System”, which is a total solution for heating, cooling and indoor air quality.

Carrier Infinity Furnace

At 96.6 AFUE (just like gas mileage, higher is better) the carrier infinity furnace claims to have one of the highest efficiency ratings available! When you start taking a closer look however, you really need to watch out for what you are getting, and work very closely with your HVAC Contractor, to make sure your specific size and poise is eligible for the $150 energy tax credit.

Get Three Free Carrier Infinity Quotes Today!

Carrier Infinity 96 Specifications

The Carrier 96 Infinity Gas Furnaces come in every size, to fit every home! Your contractor will tell you which is right for your home, since with Infinity units and the multiple stage burners and variable speed blower, the whole system truly needs to be taken into consideration, much more than other systems!

  • Up to 96.6% AFUE Efficiency
  • 10-year parts limited warranty when properly registered
  • Lifetime limited warranty on heat exchanger
  • ENERGY STAR – As an ENERGY STAR partner, Carrier Corporation has determined that the Infinity® 96 gas furnace meets the ENERGY STAR guidelines for energy efficiency!
  • Infinity Thermostat Control as well as Thermidistat
  • Onboard diagnostics with over 70 parameters
  • 40,000 – 120,000 BTUH Heating Capacity
  • Variable-speed blower motor
  • Aluminized Steel Primary Heat Exchanger
  • Serpentuff Polypropylene-coated Secondary Heat Exchanger
  • Natural Gas or easily convertible to liquid propane
  • 4-way multipoise design means one unit for several applications

The Real World Carrier Infinity Furnace Reviews

We have (2) Infinity systems in our own home, and have sold hundreds to others! Plain and simple, if you are going to decide to take the plunge for one of the highest quality systems on the market, don't do it halfway! As we have repeatedly stated here and at on other HVAC Forums, the Carrier Infinity System is designed to be a total solution, not a piecemeal solution.

In other words – choosing only the Infinity furnace, or only the air conditioner, will not allow you to reap the full benefits of the Carrier Infinity System! If you decide to get a free carrier quote, make sure the contractor understands that you want to install at minimum:

  • Carrier Infinity Gas Furnace
  • Infinity Air Conditioner or Heat Pump
  • Infinity Control Thermostat

There are other components to the infinity system, but as long as you have the major equipment in place to begin with, you can add the others later with very little hassle!

Cost of a Carrier Infinity Furnace

The price you pay for a Carrier infinity Furnace is truly going to vary, based on the HVAC Contractor you are working with, their own wholesale pricing levels from Carrier and of course, the variable they will charge you to install the furnace. By itself, wholesale Carrier Infinity Furnaces cost approximately $1100 for a 40k btu furnace, to more than $1800 for a 120k btu infinity gas furnace.

Many people check on eBay for a Carrier furnace, but you need to beware that Carrier has told us directly, they DO NOT warranty any systems bought on the Internet! (They do allow them to continue to be sold though)

(Learn more about Carrier HVAC Equipment)


Do You Own A Carrier Infinity System?

If so, please leave your own reviews below, as well as where you live and what the system cost you (Approx)

Other Places to Learn More about Carrier Infinity Furnaces

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24 thoughts on “Carrier Infinity Furnace Review

  • March 3, 2010 at 7:56 am

    Dane here from Nola.

    We have a 80k Infinity furnace & 3-ton Infinity Heat Pump system installed in our home. LOVE it!

    Like the author says – if you go for it, go all the way and make sure you get a matched system from a carrier dealer.

  • April 5, 2010 at 1:43 pm

    For a Carrier Infinity 96 gas furnace, and a direct – vent application, could you tell me, what diameter the PVC vent outlet is & what diameter have the intake air inlet. The owner manual doesn’t specify any dimensions.

  • April 5, 2010 at 2:00 pm

    @ Veronica –

    Its likely going to depend on the size of the furnace you have. Carrier however, only supplies 2 sizes of concentric venting kits for condensing furnaces.

    2 or 3 inch.

    You should talk to the place you purchased the furnace. They should have access to the exact info you need.

  • April 28, 2010 at 11:45 am

    We’re building a new home and the HVAC contractor spec’d CARRIER 58MCB080-116, 80,000 BTU INPUT, 92% AFUE EFFICIENT FURNACES. I asked about upgrading to the variable speed Infinity and he wants $1895 each on top of the current bid. From the wholesale numbers in the article, this seems high. Any comments on this?

  • April 28, 2010 at 12:17 pm

    Chris –

    Sounds a little high to me.

    The only real difference should be the different thermostat (Assuming they would put in an Infinity TStat) and possibly 1 hour extra time for a higher skilled technician to come by and make sure it all works correctly.

    The price difference on the furnaces themselves are less than half of the upgrade cost diff and everything else is the same. (duct, vent, etc) Are they replacing the outdoor condensers with 2-speed infinity as well? I mean… is there more to it than just the furnace upgrade?

  • April 28, 2010 at 12:33 pm


    Thanks for the quick reply. Yes, they are also asking for an additional $1895 to upgrade each of the AC units to a 2-stage model.

    I just sent the salesman an email asking why he spec’d the Base model and his only suggested upgrade is to the ICS system. In your opinion, are there other more middle-of-the-road units like the Performance 93 that would be less?

  • April 28, 2010 at 12:53 pm

    Wow… so you are saying he wants an additional $3800 (+/-) to go from a 92% model furnace, to the Infinity system for both in and outdoor units?

    Have you gotten other quotes from different Carrier dealers yet? This one sounds very high.

    Even from a base model – 13seer AC system with the 92% furnace, the maximum difference in cost to a contractor would be less than 2k per system. (That’s less than 2k on top of what you are already paying)

    Sounds like they are just doubling their cost… and going from there!

    I would suggest getting a few more equipment quotes.


  • August 28, 2010 at 8:02 pm

    Must replace h/a unit for upstair in my home. Have rec. 6 estimates ranging from $5,000 to $10,500.
    Carrier 15 seer split hybrid heat pump single 3 stage w/ single speed compressor..$5,897.81
    Trane 15 seer split hybrid dual fuel $6,450
    Nutone high efficiency hybrid heat pump $$6,494.
    All have the same basic 10 yr warranty on equip with 1 year labor.

    I will be heating/cooling appx. 1700sq.ft of living space. My current system still gives great service. It is a GE installed in 1976 but has had to be repaired 3 times in past 6 mos. so I believe it is time for a new system. If I select the correct unit I will qualify for the Federal Tax credit.

    Can anyone give me advise on which brand is best and if the above prices are too high?

  • January 18, 2011 at 10:29 pm

    I am re-editing my previous comment/complaint as there were several typos.

    We have come to the conclusion that the investment made to purchase a Carrier Infinity 5 years ago was the worst that we have made. We paid approx $11K through a Sears contract in Brooklyn, New York in 2005. Since, our home has been the coldest, and now we regret having removed our good old faithful furnace. It might have been bulkiy and costly but it was toasty and warm. The Carrier Infinity comes on and goes off when it feels like. When you are really depending on the furnace to work, which is when the temperature drops, it fails to come on. The machine hums and sings and makes weird noises all the time.

    Earlier today, a Sears technician visited and has diagnosed a problem as a motor gone bad. Is the motor only good for 4 winters at the price paid? Also we can’t even leave our home for a winter vacation because we are so fearful of the system breaking down (like it did) in our absence over the holidays. This is what I call psychological warfare, having to constantly have this furnace on your mind. We had to make several long distance calls from where we were to the US to try and remedy and pacify the situation with our loved ones, but it was fruitless. Those in the home spent Christmas in New York not only with one of the worst blizzard, but aso in a a very very cold house.

    When we returned from our vacation. we had to purchase additional room heaters the next day because our home was still frigidly cold. Bear in mind that we have bought several other heaters over the last 5 years to compensate the heating deficiency of the Carrier Infinity.

    We are still on the Master Protection Plan and really would like to enjoy the freedom of what it is like to own a troublefree Carrier Infinity that is efficient and as advertised.

  • January 20, 2011 at 12:32 pm


    I deleted your previous comment since you rewrote this one and fixed a couple of typos that were present.

    As for your problems with Carrier, I think it is reasonable to expect better performance out of your unit given its young age and price paid. Is there any chance that the installation could be a portion of the problem? The dirty little secret in the HVAC industry is that installation is one of the biggest reasons that systems shine or falter. I have no knowledge of your installer, but many problems stem from an improper installation from the outset.

    Thanks for dropping a line!

  • January 23, 2011 at 4:09 pm

    I just moved into a house with a Carrier Infinity 96 furnace. It is having intermittent problems (late at night) where the unit starts up but the fan doesn’t seem to kick in fully but the burner stays on and the unit heats up rapidly and begins to emit smoke from the vents. I can typically get to the unit are shut it down when the smell occurs (before the smoke is produced). I can’t repeat the problem with the repair guy here and so, they claim nothing’s wrong (the fire department would have to disagree on that point). Has anyone ever experienced this, and if so, what was the diagnosis?

  • January 24, 2011 at 10:02 pm


    Can’t say that I have personally seen that failure mode on the Carrier Infinity 96. Perhaps one of our readers has seen this particular problem on their Carrier furnace.

  • April 16, 2011 at 7:09 am

    People please be aware that when upgrading to and infinity system you must upgrade your ductwork for maximum system performance and long term life expectancy of the blower motor. Also some registers may have to be upsized and or adding a new register to a room or living area if upsizing the register can’t be done. I live in Southern California and here 80% of the homes have undersized duct work. Normally its 25% undersized, and thats just for standard systems. Carriers Infinity Systems need 25% increased duct size if your existing Duct work is Flex Duct , Even if it was sized correctly for the existing system for maximum effeciency. If you want a Carrier Infinity System make sure to use a carrier authorized dealer. I am a service tech in HVAC now for 16 years and i have seen bad installations of this systems and not being set up right or wired correctly, either by do it your self or bad contractors who are not Carrier Dealers. You can install a system in and if not done correctly it will only work at 80% or less of its capacity and thats money just being wasted. Not to mention the energy also wasted. Trust me you dont want to pay twice for a system installation because replacing parts for this systems is expensive. On a side note when upgrading your system get a dual UV light system installed in the Evaporative Coil. One UV light on bottom of coil and one on top of the coil this will ensure no mold or weird stuff growing on the coil and inturn giving you a bad breathing environment, especially for the children or elderly. One last thing get get a bid from 4 diffrent Carrier Dealers and go with the one that goes and checks your attic or basement and inspects your duct system or air distribution system because thats most likely the contractor that takes pride in system performance.

  • June 7, 2011 at 9:52 am

    I would not recommend an Infinity system. We had a Carrier unit for 20 years, 8 SEER and replaced it with an Infinity 19 SEER. Our utility bills went through the roof, about double. I’ve had the installer out several times, Air Comfort (wouldn’t use them either) and a Carrier representative with no positive results. I recommend checking out the competition.

  • June 17, 2011 at 9:56 pm

    Folks, the Infinity system is an incredible system however the installation and start up are critical. The system needs to be installed with its matching evaporator coil and outdoor unit whether a heat pump (hybrid) or variable or 2 stage compressor. This machine when properly installed has many very nice features such as variable staging gas valve, variable speed blower motor, thermidistat, and so much more when the full system is installed and done properly. Your temp is much more accurate, no over shooting, humidity control makes a huge difference in how the air (feels) no cold and clammy, its motor ramping is very nice as it slowly and efficiently meets your set points it can control up to 8 different zones making it not over work where heat or cooling is not needed at the time. These are just a few of the many things the Infinity system can do. BTW I am not even a Carrier dealer but have read and researched it quite a bit and also went to school to learn about the ins and outs of repairing them. One helluva system. Just don’t short change yourself by not going all out. If you are not going to do the whole system there are many other options by many brands that can save you alot of money and do most of what the Infinity can do. Just not all of them and those few are the ones that really give you the ultimate in Indoor Air Quality. Do your research and call your Carrier distributor in your area a find out who is the ( best) at this particular system it needs a very knowledgeable installation and service crew to get it fine tuned. Good Luck and enjoy the savings and quality of air delivery. Again NO short cuts, air cleaner, steam humidification, zoning, minimum 2 stage outdoor or variable outdoor unit.. the whole deal or don’t waste your money. Don’t buy a Lexus with Yugo wheels and tires….

  • July 20, 2011 at 6:27 pm

    Is a quote of $9455 + tax reasonable for a this pair:

    1. Gas Furnace – Infinity 96.6% AFUE (58MVC 080-20)
    2. AC – Infinity Series up to 21 SEER (24ANA1 36A32)


  • August 2, 2011 at 5:43 pm


    Getting the systems installed and running for under $10k seems like a good deal to me for the Carrier Infinity system.


  • September 10, 2011 at 6:41 pm

    Peter says:
    January 23, 2011 at 4:09 pm
    I just moved into a house with a Carrier Infinity 96 furnace. It is having intermittent problems (late at night) where the unit starts up but the fan doesn’t seem to kick in fully but the burner stays on and the unit heats up rapidly and begins to emit smoke from the vents. I can typically get to the unit are shut it down when the smell occurs (before the smoke is produced). I can’t repeat the problem with the repair guy here and so, they claim nothing’s wrong (the fire department would have to disagree on that point). Has anyone ever experienced this, and if so, what was the diagnosis?

    Take your thermostat into diagnostic mode and check for Fault 37 – Heater stuck on. That happens to my Infinity furnace sometimes when we get a brownout or a power spike. It will usually re-set (correct) itself within about 30 minutes if you just leave the furnace or A/C on.

    The Infinity seems to be a pretty good furnace, but you’ve got to keep the connectors on on the controller PCB clean.

  • September 14, 2011 at 3:02 pm

    Thanks for the comment and possible solution Bill!

  • October 31, 2011 at 8:18 am

    What is the filter size on the Infinity?

  • November 8, 2011 at 12:17 am

    We got a quote of $8000 to install a 3.5 ton variable Goodman gas furnace for our 1700 sq ft home in California. This seemed high. Any thoughts? Is the Goodman a good brand, or should we go with a Carrier or Lennox?

  • November 15, 2011 at 6:25 pm

    Don that is usually contingent on how your venting into your furnace is situated. Most installers are going to 4″ thick media filters, but the size of the filters can vary a little.

  • November 15, 2011 at 6:27 pm


    Not knowing your exact specs for your home I would think that is too high. And normally furnaces are measures in BTU’s, not tons (air conditioners and heat pumps are often measured by tons). In general Goodman has a bad reputation, but their quality does appear to be moving in the correct direction. The highest thought of brands tend to be Carrier, Trane, and Lennox, although nearly all companies make a quality furnace these days.

  • April 16, 2012 at 2:38 pm

    We have a 6 year old Carrier Infinity 96. Last night at 2 am, we wake up as smoke were all over our house. Turned out motor is dead and it will cost 1500 part + labor to fix it. .Too scary, will never buy a
    Carrier again.

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