AirEase A98MVK Modulating, Variable-Speed Furnace (Best)
What we believe to be our best furnace. The A98MVK is a modulating gas furnace — instead of just switching on and off, it adjusts its heat output in increments as small as 5%, running at the lowest speed needed to hold your home at a steady, even temperature instead of the usual on/off temperature swings.
- 98% AFUE — turns nearly every dollar of fuel into usable heat
- Stainless-steel heat exchanger, crimped rather than welded for strength, with EHX™ technology to eliminate hot spots that shorten furnace life
- Modulating gas valve with variable-speed blower — fine-tunes both flame and airflow together rather than stepping between fixed speeds
- Silicon nitride hot surface ignitor — no standing pilot light
- Quiet Combustion™ technology — fully sealed burner box and low-BTU burners for quieter operation
- MyHomeComfort™ enabled — control heating and cooling from your phone or with Alexa
- Factory-installed Protection Pro® refrigerant detection system
- ENERGY STAR® certified
AirEase A972VK Two-Stage Furnace (Better)
A great middle-ground option for homes that want high efficiency and steadier comfort without paying for full modulation. The A972VK’s two-stage gas valve runs on a lower flame setting most of the time and only opens up to full output on the coldest days and an ECM variable speed blower motor, so it holds temperature more evenly than a single-stage furnace delivering consistent, whisper-quiet comfort while helping reduce energy use.
- 97% AFUE
- Stainless-steel heat exchanger, crimped rather than welded, with EHX™ technology
- Two-stage gas valve paired with an ECM variable speed blower motor — steadier, more consistent airflow than a fixed-speed PSC motor.
- Silicon nitride hot surface ignitor
- Quiet Combustion™ technology — sealed burner box, low-BTU burners
- Factory-installed Protection Pro® refrigerant detection system
- ENERGY STAR® certified
A972EK Two-Stage Furnace (Good)
A dependable, efficient furnace for homeowners who want solid performance at a lower price point without stepping down to a builder-grade unit. The A972EK’s two-stage gas valve runs on a lower flame setting most of the time and only opens up to full output on the coldest days, so it holds temperature more evenly than a single-stage furnace while running quieter.
- 97% AFUE
- Stainless-steel heat exchanger, crimped rather than welded, with EHX™ technology
- Two-stage gas valve paired with a constant-torque blower motor — steadier, more consistent airflow than a fixed-speed PSC motor, though not full variable-speed
- Silicon nitride hot surface ignitor
- Quiet Combustion™ technology — sealed burner box, low-BTU burners
- Factory-installed Protection Pro® refrigerant detection system
- ENERGY STAR® certified
