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13HPX Heat Pump

Merit® Series

13HPX Heat Pump

Economical, environmentally responsible home cooling and heating

Even in the hottest summer months, the 13HPX works efficiently to enhance your comfort. Compared to an older system, this heat pump can save you significantly on your monthly utility bills.


Here are some of the top features of the 13HPX:

Efficiency rating meets or exceeds 13.00 SEER / 7.70 HSPF

Dependable scroll compressor provides smooth, efficient and reliable operation.


Features and Benefits

Energy Efficiency

  • Efficiency rating meets or exceeds 13.00 SEER and 7.70 HSPF—which can save you hundreds of dollars a year, compared to a standard heat pump
  • High-efficiency outdoor coil—provides exceptional heat transfer and low air resistance for high-efficiency operation

Quiet Operation

  • Sound levels— as low as 76 dB
  • Direct-drive fan—precision-balanced direct-drive outdoor fan is designed to provide quieter operation and longer product life

Home Comfort

  • Dependable scroll compressor—provides smooth, efficient and reliable operation
  • Designed to work with the Humiditrol® whole-home dehumidification system*

Environmental Responsibility

  • Chlorine-free R-410A refrigerant—provides exceptional comfort without exacting a costly environmental toll

Reliable Performance

  • PermaGuard™ Cabinet—heavy-gauge, galvanized steel construction, louver coil guard, baked-on powder finish and durable zinc-coated steel base provide long-lasting protection against rust and corrosion.

Warranty and Specs

Warranty and Specs

13HPX Product Literature

Product Brochures


13HPX Heat Pump Product Brochure

Installation Manuals


13HPX Heat Pump Installation Manual


Rated 4.4 out of 5 by 25 reviewers.
Rated 5 out of 5 by Perfect for our needs and quiet! We needed a 25 year old system replaced in our office. The 13 HPX works great and is super quiet. A huge improvement for the comfort and work environment of our office. August 4, 2014
Rated 5 out of 5 by This HVAC was an excellent choise. We replaced an old HVAC with a new Lennox unit. It preforms so much better and is much quieter. Best decision we could have made! August 1, 2014
Rated 5 out of 5 by This product has many qualities and features. We are very pleased with our new Lennox 13HPX heat pump unit. Already, we are seeing a decrease in our electric bill. The unit is very efficient, clean, and much quieter than our previous heat pump. We appreciate the value as well as the performance. July 30, 2014
Rated 5 out of 5 by Economical and quiet This Heat Pump has some great economy features. The thermostat allows you to set your cooling preferences while you are gone. It's so much quieter than our other unit and it seems to keep the house consistantly cooler when it shuts off than our previous unit. July 25, 2014
Rated 5 out of 5 by Packs alot of power This unit packs a lot of power and if very efficient. I have always had great service form Lennox products. This unit replaced an old Lennox unit that lasted 16 years without any problems. Happy Lennox Customer! July 19, 2014
Rated 5 out of 5 by Satisfied so far Seems to work very well as an A/C unit. We will have to wait and see how it works as a heat pump. Seems a bit noisy, like it is vibrating in the fan area when in operation. July 2, 2014
Rated 5 out of 5 by heat pump quiet unit, do not see major savings, but this is a very hot season June 21, 2014
Rated 5 out of 5 by Very durable product We puchased this system last summer and it has kept our power bill down and kept us comfortable. With a family, we needed something affordable and reliable. Very happy. January 11, 2014

*Must be accompanied by either a variable speed air handler or furnace and the ComfortSense® 7000 Series touchscreen thermostat

Recognitions and Certifications

UL Listed (C)(US) AHRI Certified C Good Housekeeping HRAI Canada

© 2014 Lennox International Inc.