SL18XP1 Single-Stage Heat Pump

The quietest and most efficient single-stage heat pump you can buy.

An essential part of a high-efficiency home

With a SEER of up to 18.50 and an HSPF of up to 10.20, the SL18XP1 can save you hundreds of dollars per year in energy bills through all types of weather.

Solar ready, for the highest possible energy savings

Since it’s part of the Dave Lennox Signature^® Collection, the SL18XP1 can be easily combined with solar roof modules in a SunSource^® Home Energy System. This means it can drastically cut your utility bills and make you eligible for a federal tax credit.

Working quietly in the background

Innovative SilentComfort™ technology combines thick insulation, vibration resistance and a specially shaped fan blade to greatly reduce sound levels.

Dependable performance, even in harsh conditions

The condenser coil is the part of the unit that draws hot air from inside your home and releases it outside. The Lennox Quantum™ coil handles the heat like no other. It’s constructed from aluminum alloy, helping it resist corrosion in harsh conditions like coastal environments.

Enjoy the comfort of connectivity

The SL18XP1 is compatible with the advanced control of the iComfort^® S30 Smart Thermostat, which delivers unparalleled comfort and connectivity, whether you’re home or away.