Lennox Residential
Email SignupSign up for email news
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 30 reviewers.
Rated 4 out of 5 by Good unit yet to work the unit to hard but so far has a nice output and the fan will slowly start up and slow down for quiet and smooth operation, although not top of the line id say it does the job. October 16, 2014
Rated 5 out of 5 by delgad9 Unit works very quietly. Saving me 30% from previous electric bill. October 6, 2014
Rated 5 out of 5 by so far so good The unfortunate demise of my old system required the replacement of my heat pump. The Lennox system was one of two that would fit the space in the attic as well as the existing air handler. The unit is cooling well but I haven't used the heat yet. September 23, 2014
Rated 5 out of 5 by Great Unit and Great Buy I definitely do not like spending thousands of dollars on home repairs. However, I can unequivocally say I have upgraded significantly. I am not an ac guy but can absolutely tell the difference from what I had to what I have now with this 13HPX heat pump. This unit is quiet and is rated a SEER 13 which is the minimum rating standard. However, going from a SEER 10 to this unit has substantially improved our home cooling. We haven't hit winter yet but I doubt there will be any problems. You can definitely try other units to get a better SEER rating but stick with the HPX line and not the just the XP. Again great buy for the price and how great it works. September 18, 2014
Rated 5 out of 5 by Very pleased with the efficiency & quality of the product. Impressed with the efficiency of the unit...cooled my house from 98* to 76* in less than 2 hours. September 14, 2014
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

*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.