Comfort from the Best of the Best: the Dave Lennox Signature® Heat Pump Collection

When you have to consider heat pump replacement in Mount Pleasant, look no further than the renowned leader, the Dave Lennox Signature® Collection. There's a reason our heat pumps stand the test of time, and it starts with the character that Lennox has built over its more than 100 year existence. Durability and reliability are only the start.

With all three Dave Lennox Signature® Collection heat pumps featuring our SilentComfort® technology, you know from the start that your home won’t be disturbed when it starts running. It’s one of those things that you may not realize is so annoying until you experience the quiet operation that these heat pumps offer. And once you’ve experienced it you’ll be glad you made the decision you did.

While all Lennox products feature superior efficiency, the Dave Lennox Signature® Collection boasts some of the highest efficiency in the area. Saving money every month is very appealing, and when you decide heat pump replacement is looming, you know where to turn. The experts at Olde Towne Heating & Air in Mount Pleasant have the answers to all your heat pump related questions and will work with you individually to uncover a new level of comfort for your home. Give us a call at 843-856-1433 or set up an appointment through our online scheduler and learn more about the superior performance of the Dave Lennox Signature® Collection.

SL18XP1 Heat Pump

The SL18XP1 blends the power of Lennox innovation and SilentComfort™ technology to provide you with the quietest and most efficient single-stage heat pump on the market***. Named a Most Efficient of ENERGY STAR product in 2015 and with high SEER and HSPF ratings, the SL18XP1 heat pump can help you stay comfortable all season long while potentially lowering both your energy expenses and environmental impact. With added features like iComfort® and SunSource® technology, you can improve efficiency (and those utility bills) even further.

  • Up to 18.50 SEER* and 10.20 HSPF** for high efficiency that helps you save on cooling expenses
  • ENERGY STAR® qualified so you can be certain the SL18XP1 has met rigorous energy efficiency requirements
  • SilentComfort™ technology for very quiet operation
  • SunSource® Solar-Ready enables you to add solar modules to generate electricity to reduce energy consumption and utility costs
  • Dual-fuel capability makes it possible to combine with a gas furnace for enhanced comfort and energy use
  • 10-Year Limited Warranty on covered components including compressor
SL18XP Heat Pump
Efficiency Rating (SEER): up to 18.5
HSPF Rating: up to 10.2
Sound Rating: 67
Price Guide: $$$

XP25 Heat Pump

As one of the Most Efficient ENERGY STAR certified products of 2017, the XP25 Heat Pump is the definition of innovation. Keep your home comfort consistent no matter what the weather throws at you with Lennox Precise Comfort® technology. You’ll use energy efficiently and save on your energy bills. The XP25 is 50 percent quieter than a standard heat pump, thanks to SilentComfort™ technology. You’ll barely even know its running. With XP25, you won’t be dissatisfied.

  • Up to 23.5 SEER*and 10.2 HSPF* bringing maximum efficiency
  • SilentComfort Technology brings low sound levels that you’ll barely hear
  • Up to 23.50 SEER* and 10.20 HSPF** for optimal efficiency
  • Precise Comfort technology keeps your temperature within half a degree
  • Variable-capacity innovation makes small adjustments to provide consistent temperatures
  • SunSource® Solar-Ready for easy transition to solar-power system to reduce energy costs
  • PermaGuardCabinet provides high quality materials that are reliable and durable for extra protection
  • ENERGY STAR® Qualified, exceeds several energy standards and may qualify for state and local utility rebates
  • 10-Year Limited Warranty on the XP25’s compressor and covered components
XP25 Heat Pump
Efficiency Rating (SEER): up to 23.5
HSPF Rating: up to 10.2
Sound Rating: 58
Price Guide: $$$$

XP21 Heat Pump

Home comfort is something you should feel, not hear—and that’s precisely what you will find with the XP21. Throw in outstanding efficiency and you’ve got one of the most efficient and reliable two-stage heat pumps available. Don’t just take our word for it, the XP21 was chosen as one of the Most Efficient ENERGY STAR certified products in 2017. Relax and enjoy your time at home while this heat pump takes care of your home’s heating and cooling needs from temperature to humidity control.

  • Up to 19.20 SEER* and 9.7 HSPF* for maximum efficiency
  • SilentComfort™ Technology reduces sound levels for quiet performance
  • SunSource® Solar Ready makes it simple to switch to solar power when you are ready
  • Multi-Stage Scroll Compressor modifies cooling, humidity levels and energy use
  • PermaGuard™ Cabinet offers extra protection against rust and corrosion
  • ENERGY STAR® Qualified, exceeds several energy standards and may qualify for state and local utility rebates
  • 10-Year Limited Warranty on covered components including compressor
XP21 Heat Pump
Efficiency Rating (SEER): up to 19.20 
HSPF Rating: up to 9.7
Sound Rating: 67
Price Guide: $$$

XP17 Heat Pump

The XP17 may have the lowest number in its title, but that doesn’t make it any less remarkable than the other two models in the Signature® Collection. It features the SilentComfort™ technology that everyone is talking about and is the most efficient single-stage heat pump offered.

  • SilentComfort technology, giving you ridiculously quiet operation
  • Up to 17.70 SEER* and 9.50 HSPF**, potentially saving you money year after year
  • SunSource® Solar-Ready to make your solar energy transition easy
  • 10-Year Limited Warranty on your system’s compressor and its covered parts
XP17 Heat Pump
Efficiency Rating (SEER): up to 17.7
HSPF Rating: up to 9.5
Sound Rating: 63
Price Guide: $$$

We know that all of the Dave Lennox Signature® Collection heat pumps are impressive and it’s hard to pick the best one, so give Olde Towne Heating & Air in Mount Pleasant a call at 843-856-1433 and we’ll help you choose the best heat pump replacement option for you. Don’t feel like picking up the phone? Use our online scheduler to set something up. We’re looking forward to working with you to take your comfort to the next level.


* SEER, or Seasonal Energy Efficiency Ratio, measures the cooling efficiency of your air conditioner and heat pump. A higher SEER rating means greater energy efficiency and more savings for you and the environment.

** HSPF, or Heating Seasonal Performance Factor, measures the heating efficiency of your heat pump. A higher HSPF rating means greater energy efficiency, more savings and is better for the environment.

*** The quietest and most efficient single-stage heat pump you can buy. Air conditioners/heat pumps have sound ratings established per AHRI’s test standard: AHRI 270-08 (August 2014). The SL18XP1 has the lowest sound rating of any single-stage heat pump of any major U.S. brand of heat pump equipment. Efficiency claim based on comparison of single-stage heat pump products’ SEER as published in AHRI in June 2015. The SL18XP1 has a maximum rated efficiency of 18.50 SEER.