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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 4.2 out of 5 by 21 reviewers.
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
Rated 4 out of 5 by The product is great for price the product is great for the price. I only complaint I have is the unit is loud when running. December 26, 2013
Rated 1 out of 5 by No heat Heat pump does not work. The blower motor does not work. Dealer no longer handles Lennox. Can't get parts. He dropped Lennox because 0f all the problems they were having with Lennox heat pumps. October 13, 2013
Rated 5 out of 5 by Definitely buy!!!!!!! We've had this unit for years here in Canada winters are cold but this heat pump heated the upstairs very nicely it freezes up a lot but we turned the defrost interval to 30 and it helped definitely recommend June 23, 2013
Rated 1 out of 5 by Don't buy We are replacing due to a bud compressor in just under 6 years. Other companies give a ten year. Unit was noisy and froze up often. Shop around when building do not assume that they will put a quality product in, because they will get the cheapest junk they can. This is that junk! June 2, 2013

*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.