Who is Lennox?
Lennox is an accomplished brand with a long history. It’s earned a great deal of respect in the residential and commercial HVAC markets, partly due to its impressive experience. Most of the manufacturer’s 10,000 employees work out of the company’s headquarters in Richardson, Texas.
Lennox’s Product Offerings
Lennox offers an array of air conditioning systems, ranging from the economical to the cutting edge. Almost all of them have garnered hundreds of customer reviews, and it’s telling that they are overwhelmingly positive. That’s difficult to achieve in the HVAC industry, where buyers usually leave reviews when they are disappointed in their new air conditioner.
Lennox has always made advanced technology a priority for its products. Most recently, the company earned several awards in innovation and green technology with its new line of ultra-low emission furnaces, which bring harmful emissions down by more than 65 percent, compared to low emission furnaces. This approach is also seen in its air conditioners, which leverage the most important advancements in the industry.
All of Lennox’s air conditioners are covered by a warranty. It’s a 10-year warranty on all covered components, a 10-year warranty on the compressor itself, and a 20-year warranty (or a limited lifetime warranty) on the heat exchanger, depending on the model.
This is what Lennox’s air conditioning options look like:
1. The 13ACX – The 13ACX is the least expensive option in the Lennox portfolio, but it still meets federal regulations for HVAC efficiency. With a SEER rating of 13, the 13ACX would represent a considerable efficiency upgrade over most homeowners’ existing systems. The SEER rating describes, in a single metric, how efficient an air conditioner is, by comparing how much cooling the system provides per unit of energy spent.
The 13ACX is an economical HVAC system that is still efficient enough to bring operating costs down. It’s also built to provide years of dependable performance, with a rugged scroll compressor, a direct-drive fan that reduces noise output and the Permaguard cabinet, which is built from heavy-gauge galvanized steel and finished with a baked-on powder coat. Both keep the unit safe from corrosion and weather.
13ACX

Standard Features
SEER rating of up to 13
Sound: as low as 76
Copper tube/aluminum fin coil
Single-speed compressor
PermaGuard steel cabinet
Factory-installed in-line filter drier
5 Year Limited Warranty on covered components including compressor.
2. The EL16XC1 – The EL16XC1 is a step up from the 13ACX model in terms of features. It scores a 17 SEER rating, which sits in that perfect zone of excellent efficiency and affordability. But the EL16XC1 is more than just an improved SEER rating, as it comes with some upgrades.
For one, it is designed with a sound-dampening system, which reduces output decibel levels to just a hair over 70. That’s around the sound of a normal conversation. The EL16XC1 is also compatible with Lennox’s Humiditrol and ComfortSense features. With the Humiditrol, the EL16XC1 provides an extra boost of humidity reducing power, while the ComfortSense thermostat is a programmable piece of control technology with an intuitive touchscreen. With smart use of the ComfortSense, homeowners can cut their energy usage by a significant margin.
EL16XC1

Standard Features
SEER rating of up to 17
Sound: as low as 71
Copper tube/aluminum fin coil
Single-speed compressor
SilentComfort Technology
ENERGY STAR Certified
PermaGuard Cabinet & SmartHinge Louver Design
Factory-installed in-line filter drier
10 Year Limited Warranty on compressor
5 Year Limited Warranty on covered components.
3. The SL18XC1 – The SL18XC1 offers an 18.5 SEER rating, so it’s even more efficient. And it comes with the same durability and controllability features that less expensive Lennox systems offer. In addition to those, the SL18XC1 is built with SilentComfort, which combines insulation and a special fan blade to reduce sound levels even further. Lennox asserts that the SL18XC1 can be installed right outside of a bedroom window without disturbing people inside.
The SL18XC1 is also designed with advanced electronic sensor technology that allows for extremely precise and reliable performance, no matter what weather conditions are present. And with the iComfort S30 thermostat, the SL18XC1 can respond intelligently to how the family cools their home, eventually picking up on those patterns without the need for programming.
SL18XC1

Standard Features
SEER rating of up to 18.5
Sound: as low as 65
Copper tube/aluminum fin coil
Single-speed compressor
Solar Ready Design
SilentComfort Technology
iComfort-enabled technology
ENERGY STAR Certified
PermaGuard Cabinet & SmartHinge Louver Design
Factory-installed in-line filter drier
10 Year Limited Warranty on covered components including compressor
4. The XC25 – The XC25 is the pinnacle of Lennox air conditioning technology, with a SEER rating of 26. It doesn’t get much more efficient than that, and the XC25 manages this rating while also running with SilentComfort technology.
What makes the XC25 stand out against other Lennox air conditioners is its variable capacity, inverter compressor. Whereas a single-stage compressor is either running at full capacity or off, the XC25 can make extremely fine adjustments in compressor capacity to consistently put out optimal cooling and energy efficiency. Air conditioners spend most of their energy switching on and off, but a variable compressor reduces the need for the compressor to cycle as often. This also minimizes wear and tear on the system. Finally, this compressor design also pulls close to 30 percent more humidity out of the air, compared to a single-stage compressor.
And that’s in addition to Lennox’s impressive durability and controllability features.
XC25

Standard Features
SEER rating of up to 26
Sound: as low as 59
Copper tube/aluminum fin coil
Single-speed compressor
Solar Ready Design
SilentComfort Technology
iComfort-enabled technology
ENERGY STAR Certified
PermaGuard Cabinet & SmartHinge Louver Design
Factory-installed in-line filter drier
10 Year Limited Warranty on covered components including compressor
Lennox may not have the same level of brand awareness as Carrier, American Standard or others, but it’s still a reliable option that brings the same leading edge features that the larger brands offer.