Lennox Signature Heat Pumps

Lennox Signature Heat Pump Overview

The Lennox Signature heat pump series consists of three units models ranging in SEER ratings from 18.5 to as high as 23.5 and are all Energy Star qualified. The HSPF on these units ranges from 9.7 to 10.2.

Each of the units feature the manufacturer's proprietary Silent Comfort technology, which delivers sound levels as low as 63dB, and a silent cover fan grille that keep operation of the composite fan blades quiet. The Silent Comfort feature utilizes sensors that cause the blades to rotate faster in the event of being covered by debris or ice. The units are surrounded by a galvanized steel cabinet with a baked-on powder finish, and the steel base is coated with zinc for durability. The XP25 uses Precise Comfort Technology, which makes frequent, small adjustments to best maintain interior comfort.

Among other options, the Signature heat pump series can be combined with SunSource solar modules that power the heat pump, resulting in what Lennox claims to be a 50-percent reduction in cooling and heating bills. In addition, when a Signature product is installed with the iComfort Wi-Fi thermostat, the compressor can make 1-percent output adjustments. iComfort-enabled technology is available for communication among home comfort components.

The Lennox Signature heat pump series consists of several models, including the XP25, XP21 and SL18XP1, along with the discontinued Signature 15CHPX and XP19.

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Consumer Reviews of Lennox Signature


  • Very Satisfied
  • Somewhat Satisfied
  • Neutral
  • Somewhat Unsatisfied
  • Very Unsatisfied
  • #3 of 17 Lennox Heat Pump
  • 29.41% of customers recommended

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Lennox Signature Heat Pump Reviews

Showing 16-17 of 17 reviews

"Get what you pay for"

5.0 rating
Very Satisfied

We bought out home three years ago and our gas bill for the first winter was $340 a month. I Was livid. It was the original unit(8yrs. old) and was a low-mid grade 10 seer contractor grade Carrier. We bought a Lennox signature series 19 seer Heat pump with a 2 stage motor.Our gas bill went down $200 the next winter and our electric bill also took a nice dip as well. It comes with 10 yr parts and compressor warranty and it was well worth the money spent. 10 thousand For an entire new system, heat pump,furnace,a-coil,humidifier and thermostat. Runs smooth and quiet. My neighbors unit drowns out the sound mine makes. His was replaced last year with a Trane, and is 15 feet away from my unit.For those who had problems with their Lennox units all I can say is mine is tip top, and I had a top notch installer. You get what you pay for.

Scott B.


1.0 rating
Very Unsatisfied

F. Caputo

Lititz, PA

Other Signature Reviews

According to online reviews, many consumers are happy with their purchase of their Signature heat pump--even when a problem has occurred. As one reviewer on the Lennox site explained, when their unit had a drain backup, the thermostat disabled, leading the homeowner to call a technician rather than keeping the unit running. "This likely saved my flooring," the homeowner writes.

However, a few homeowners report that these units can be noisier than advertised. One reviewer says that, in general, the unit does operate quietly, until the thermostat is set to a few degrees warmer. This can cause the unit to operate at top speed, a noisy process. In addition, a number of online reviews include significant trouble with the Lennox warranty.

Signature Warranty

The Lennox warranty provides a 10-year limited warranty on the Signature heat pump's compressor and all remaining covered components.

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