A heat pump is an HVAC unit that heats or cools by moving heat. During the winter, a heat pump draws heat from outdoor air and circulates it through a home's air ducts. In the summer, it reverses the process and removes heat from the house and releases it outdoors.
Variable operation
Heat pumps can work at either a single level of operation or two stages of operation. Lennox has the quietest and most efficient single-stage and two-stage heat pumps you can buy.*
Single-stage
Single-stage HVAC systems are still the most common systems used.
A single-stage heat pump has only one level of heat or cold output.
Two-stage
Two-stage cooling means the heat pump has a compressor with two levels of operation: high for hot summer days and low for milder days. Since the low setting is adequate to meet household-cooling demands 80% of the time, a two-stage unit runs for longer periods and produces more even temperatures.
Longer cooling cycles also translate to quieter, more efficient operation and enhanced humidity control. Compared to a single-stage unit, a two-stage heat pump can remove twice as much moisture from the air. This is important because when moisture levels are high, there's a higher potential for mold and other pollutant problems.
Lennox® heat pumps
Lennox has some of the most precise and efficient heat pumps you can buy.* With industry-leading efficiencies of up to 23.50 SEER and 10.20 HSPF, Lennox® heat pumps can save you hundreds of dollars in utility costs every year. Quiet and efficient, some Lennox heat pumps also contain SilentComfort™ technology, which can make them up to 50% quieter than a standard heat pump.
*Efficiency claim based on comparison of air conditioning and heat pump products' SEER as published in AHRI (January 2015). Actual system combination efficiency may vary; consult AHRI for exact system efficiencies. Precision claim based on the cooling capacity range of the XC/XP25-036 units as compared to equivalent-sized competitive variable-capacity compressor units.
