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XC21 Air Conditioner

Dave Lennox Signature® Collection

XC21 Air Conditioner

The quietest and most efficient two-stage central air conditioner you can buy3

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Rated 4.8 out of 5 by 99 reviewers.
Rated 5 out of 5 by Terrific system and coordination with heating and thermostat was a selling feature An excellent unit which delivers everything it promised too. Wisper quiet and with remote access and coordination with our wifi thermostat and gas furnace, it is a winning combination for us. December 27, 2012
Rated 5 out of 5 by This product has great features This product has a really no noise even if you stand beside it it's hardly heard. December 19, 2012
Rated 5 out of 5 Effienct I am pleased with this air conditioner and the two stage is perfect for what I needed to cool my house! December 11, 2012
Rated 5 out of 5 by Does exactly as advertised This is an extremely quiet efficient product that cooled our house far better than our previous unit. December 5, 2012
Rated 5 out of 5 by Very quiet This product, although the size is imposing, runs very quietly. Give some serious thought as to where it is positioned on your property as it is a very large eyesore. December 5, 2012
Rated 5 out of 5 by Best airconditioner to own the air conditioner is very quiet and accurate When comparing the set temp to my accurate thermometer it is within +/- 1degree and does not run frequently saving electric costs Thanks for good quality, December 3, 2012
Rated 5 out of 5 This product has great features The quiet is great -- my attic door doesn't rattle anymore. Remote wifi/smartphone monitoring and control works great and will save money. The dehumidifier feature improves indoor air noticably. December 2, 2012
Rated 5 out of 5 by Love the efficiency. Very quiet and much more efficient than last system. December 1, 2012
Rated 5 out of 5 by Very happy with this product Old AC was worn down-looked for a new from various sources. Am very pleased witht the performance so far. November 29, 2012
Rated 5 out of 5 by Super quiet! Unit is very quiet. Our air conditioner is placed in the center of our 1963 South Florida home so we can hear it from just about any room we are in. We are very happy with this new unit and can barely hear it which is a huge difference from our last unit. It is a pricey unit though so hopefully it will show a return with lower electric bills. November 27, 2012
Rated 5 out of 5 by This product is quiet. This model is so quiet I don't even realize it is on. It does a wonderful job of cooling my house. I love it! November 27, 2012
Rated 5 out of 5 by Very quite running Liked how system communicates for best efficiency and environment control November 26, 2012
Rated 5 out of 5 by the produce is working very well so far we are happy with the new ac/heater. we have only had it under a month. we have been comfortable. November 26, 2012
Rated 5 out of 5 by This product has excellent features The outdoor condensing unit has a grille construction that protects the unit in a very effective manner. The unit is very quiet-we hardly ever hear it running. The entire unit is durable and well constructed. It is not flimsy in design. The compressor unit is extremely quiet. November 26, 2012
Rated 5 out of 5 by Great features. I was extremely impressed with operationa\s and industry leading SEER rating. November 24, 2012
Rated 5 out of 5 by XC21air conditioner Exceptionally quiet unit. Variable speed air handler Works very well. November 23, 2012
Rated 5 out of 5 Amazing unit This unit is so efficient, my electricity costs have already gone down in the first month we used it. Also, the WiFi feature and the smartphone app is awesome! It is so quiet, you don't even know its running. November 23, 2012
Rated 5 out of 5 by very balanced cooling in all areas of the house With my original furnace i always had hot spots in my house now with the proper size and balancing of the system the whole house has a better overall cooling distribution November 21, 2012
Rated 5 out of 5 by All it claims to be Quiet, efficient, but most of all.....keeps entire house cool! Does what it says it will do. November 21, 2012
Rated 5 out of 5 by Impressed with features. XC21 Air Conditioner performs as advertised. Very pleased with with the quiteness and performance. November 20, 2012
Rated 5 out of 5 by Love It!! I couldn't possibly choose one above the other. We love all of the features. The icomfort Wi-Fi is amazing. We can set it to heat the house at 6:00 in the morning when we are getting showered and dressed for the day and then back to a cooler setting by about 7:30 in the winter months and to stay at a cooler setting all day during the summer. The entire unit is very quiet and keeps the house comfortable, no hot or cold spots in the house now. We bought the Pureair filtration system too. The air just feels cleaner and I don't noticed bad odors any longer. Wonderful and well worth the money. Just knowing that it kills germs and viruses is a comfort. I have 3 individuals in my home with weakened immune systems so I really appreciate that feature. We live in the desert so dust has always been a real problem to deal with. Not any more! I dusted thoroughly after it was installed and have been watching to see how well it would do keeping the amount of dust down. It's doing great! I may have to change the filter a little sooner the first time around because it has cleaned the air so well. We have only had to run the furnace a couple of times but again no hot or cold spots and very quiet. November 19, 2012
Rated 5 out of 5 by Bristling with technology, works like a charm... After dozens of hour of research, we purchased two of these units to cool our townhome in Puerto Rico, selecting a 4 ton XC21 for the bedroom areas and a smaller 2 ton XC21 for the living, dining and kitchen areas replacing an older 5-ton unit of nondescript origin. Splitting the units and ducting allowed to us to 'zone' A/C operation as we needed to depending on where we were in the property. Both were paired with with the MV32 variable-speed blower coil/air handling unit and together, these are absolutely be best ACs we have ever had or seen. They were the first XC21's installed on the island -this was back in summer of 2006. Current draw dropped so much that we had to resize the breakers as the units draw less than 25 amps when both are on at the compressor's 'low' speed. The variable-frequency drives on the blower coils and the myriad of operation 'duty curves' programs allowed by configuring the various jumpers on the blower coil control board allow you to set initial run to a lower air handling speed to allow for maximum humidity extraction for a few minutes after the compressors kick in, keeping some circulation going at 20% speed even when the compressors are off, setting blower speed ramp-down speed when the compressors shut off and many other duty cycle options on the blower coils. In short, fantastic pieces of equipment. Worth every penny. They have been running flawlessly for six years, so....don't be afraid of the technology as they are stone reliable. November 19, 2012
Rated 5 out of 5 by Great Cooling Power! Best A/C unit ever purchased. Most efficient and powerful air conditioner on the market. Would HIGHLY recommend this product to ANYONE. November 17, 2012
Rated 5 out of 5 by Excellent product Well designed, engineered and manufactured product. Extremely efficient. Totally quiet. Installed by highly trained and profession technicians. All aspects of installation and use of functions were thoroughly explained. November 14, 2012
Rated 5 out of 5 by This product is the Rolls Royce of A/C Units This is the rolls royce of A/C units. Just had it installed and used ECM who gave me a huge rebate through Lennox and also FPL. The unit has lots of great features and has huge cooling capability. My house will go from 80 degrees to 72 in about 35mins. Also this unit has cut my electric bill in half so it will basically pay for itself in a year :) Very happy with this unit and you will be to. November 13, 2012
Rated 5 out of 5 by Love the performance of this product. Very efficient and super quiet. This unit has perfored flawlessly. It is super quiet and very efficient. Expecting to see lowered electrical bills. November 6, 2012
Rated 5 out of 5 by Great Features Don't understand the technology, but this is a great product. You really can't hear it even when upstairs where the unit is located. The cooling is so efficient that it allows me to adjust the thermostat upwards, thereby saving on my electricity. It is more than adequate for the size (3640 sq ft) of this house. The air quality indoors has also improved alleviating some of the allergy discomfort sometimes experienced by family members. Great Product!!! November 5, 2012
Rated 5 out of 5 by Cut our energy bill in half! This unit is great! It's extremely quiet, and it cut our electric bill in half! We also love the two stage feature. It's like two air conditioners in one. It is a little expensive, but worth it. It's true what they say, you get what you pay for! October 8, 2012
Rated 2 out of 5 by Not "the most quiet". Very loud & noisy. Extremely loud, rattling, noisy and unreliable, but yet very, very pricey. October 6, 2012
Rated 5 out of 5 by quite and very efficient very efficient and quite unit and other tume ups each spring no problems October 3, 2012
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