Up to 19 SEER2 Efficiency Rating*

The highly energy-efficient cooling mode on this heat pump can deliver more than 22% greater energy efficiency than a conventional single-stage heat pump unit. SEER (Seasonal Energy Efficiency Ratio) rates the energy efficiency of your cooling equipment. The higher the SEER rating, the more efficiently your unit operates, saving you money on utility bills. A SEER rating of 18 meets ENERGY STAR^® and CEE Tier 1 and Tier 2 qualifications, potentially making you eligible for tax incentives or local utility rebates.

Up to 8.5 HSPF2 Efficiency Rating*

HSPF (Heating Seasonal Performance Factor) rates the energy efficiency of your heat pump. The higher the HSPF rating, the more efficiently your unit operates, saving you money on utility bills.

Pro Series^™ Systems

Pair this model with a Pro Series^™ variable-speed furnace and a Comfort Sync^® A3 Thermostat, for optimum performance. With higher energy efficiency, premium technology and a smart thermostat, our Pro Series^™ systems give you the highest degree of control over your home environment.

ENERGY STAR^® Certified

The ENERGY STAR program is a joint program of the U.S. Environmental Protection Agency and the U.S. Department of Energy helping us all save money and protect the environment through energy-efficient products and practices.

True Variable-Capacity Cooling

Rather than running at just one speed, the 18LX Inverter-Driven Scroll Compressor changes its speed in small, precise increments and adjust cooling up and down like a dimmer switch. So temperatures are held exactly where you want them, even in extremely hot or cold weather.

Quiet Shift^™ Technology

Allows heat pumps to enter defrost mode without excessive noise. Since refrigerant pressure is allowed to equalize before the switch, the heat pump can dissipate performance-robbing frost and ice quietly.

MHT^™ Technology

MHT^™ Technology helps transfer heat in and out of your home more efficiently. Featuring lanced coil fins for greater coil-to-air contact, rifled tubing for enhanced refrigerant flow, and a fan venturi cover to focus air flow over the coils to more efficiently remove heat in cooling mode and absorb heat from the air in heating mode. That means our air conditioners and heat pumps are designed to last longer and help ensure your home stays consistently comfortable.