Lennox XC21 Air Conditioner

The Lennox XC21 has held “best in class” status in several categories for several years. When comparing two-speed models from other premium brand names like Carrier and Trane, Lennox wins. They just can’t top the near-silent operation or the ultra-high efficiency of this model.

Lennox XC21 Efficiency Ratings

• Efficiency ratings as high as 21.0 SEER (Seasonal Energy Efficiency Ratio)

When the Lennox XC21 was first released, the company was quick to boast it was the “most efficient 2-speed air conditioner money can buy”. Several years later, it still holds that title. Energy Star labels the XC21 as “2018’s Most Efficient”.

Two-Speed AC Compressor

At the heart of the Lennox XC21 is a Copeland dual-stage (two speed) compressor. Lennox engineers were clearly thinking about designing a system that was ultra-quiet and ultra-efficient when creating the XC21. They accomplished both in part because of the compressor.

We have been longtime fans of two-stage compressor technology and it makes perfect sense in a place like Phoenix, AZ. We have to size and design our central air conditioning systems here to deal with 110+ degree weather for several months. For the remainder of the cooling season, and in the late evening those temperatures drop as much as 30-degrees. During those times, the 2-speed compressor shifts down into low speed using less energy and running even quieter.

Lennox XC21 Operating Noise Level

Magic Touch Mechanical ordered and installed the very first Lennox XC21 air conditioner shipped to Arizona. We placed one on backorder for a specific client whose top concern was quiet. Since we’ve installed thousands of air conditioning systems over the past two decades, we know decibel ratings and knew this unit would be a safe bet based on the specifications.

On the day we installed the new unit and started it up, our Installation Manager called one of the owners and said, “There’s something you should know – this unit is not quiet.” Knowing our client waited specifically for this unit and more importantly, because quiet was the utmost concern, panic set in. After a pause, our Install Manager said, “It’s silent!”

Okay, so technically it’s not really silent – but it really is so quiet, it’s hard to tell that it’s even running until you walk up to it and see the condenser fan spinning!

Sound levels are measured in decibels (dB). The Lennox XC21 was measured to run at levels as low as 69dB.

Lennox iComfort Wi-Fi Thermostat 

When you choose the Lennox XC21 air conditioner for your home, we’ll also install a Wi-Fi thermostat  so you can control your new ac unit from anywhere! The Lennox iComfort Wi-Fi Thermostat is the command center for this high-tech machine. The iComfort acts as the hub for all communications as this system actually lets all of the components talk to each other. That may sound futuristic but it’s real and it’s now!

By allowing each component to know what the other is doing, they can all act in unison to deliver precise efficiency as well as perfect comfort to everyone in your home. The iComfort thermostat is very user-friendly, and was designed to be easy to understand and operate from home or away using the free Wi-Fi app.

Upgrade to the Lennox S30 Thermostat

Many homeowners choose to upgrade from the included iComfort to the Lennox S30 Wi-Fi Ultra-Smart Thermostat. This full-color thermostat is truly a work of art and may be the nicest thermostat ever made! Most would say it looks more like an iPad than a thermostat. Check out the Lennox S30 on our THERMOSTATS page.

One of the best features exclusive to the Lennox S30 is the “feels like” feature. The “feels like” feature is similar to the “wind chill factor” and “heat index” we see on local weather reports. It takes into account the humidity, temperature, etc. to provide precise comfort for you and your family.

Lennox XC21 Factory Warranty

When you hire Magic Touch Mechanical to install your Lennox XC21, we register all of the components with the factory for you. All new HVAC Systems require product registration within sixty days of installation. Not all AC companies register the warranty for you! If you don’t hire Magic Touch make sure you do it yourself to avoid coverage lapses or denials.

The Lennox XPC5 comes with a 10-Year parts and compressor “box” warranty. Meaning, even if the home is sold, the warranty stays with the equipment, not only to the original purchaser.

Lennox XC21 Summary

When our customers are happy, we’re happy – and our customers rave about the Lennox XC21! Other than the price tag, there’s really nothing to dislike about this AC unit. Speaking of price tag, the XC21 is a great example of the saying you get what you pay for. It’s definitely not within everyones budget, but for those with the means – it’s worth every cent!

• It’s the quietest 2-speed cooling unit on the market
• It’s the most efficient 2-speed unit on the market
• It’s extremely well designed and built
• It comes with a communicating Wi-Fi thermostat

What’s not to like!

Are You Interested in Lennox XC21 Installation?

Choosing a new cooling and heating system is a 10-15 year plus commitment (unless you choose the wrong installing company). We work in thousands of homes around the Phoenix valley each year and unfortunately see the discomfort, aggravation, and expense their owners deal with when the whole “system” was designed and installed improperly.

Aside from things like free maintenance, an ACCA approved Manual J load calculation, optimized airflow design, and more, there are many things that set a Magic Touch Mechanical installation apart from the others: What’s Included With This Installation?

Schedule a Free home evaluation & system design and compare units & prices side-by-side.

Other Products to Consider

Trane XL18i

Lennox XC16

Mitsubishi MXZ