MRCOOL Signature 4 Ton 90k BTU 95% AFUE Downflow Multi-Speed Gas Furnace

Take charge of your winter heating expenses with the MRCOOL® 95% AFUE 4 Ton 90,000 BTU Downflow Multi-Speed Gas Furnace. Built for high efficiency and dependable performance, this furnace delivers strong, consistent heat while helping reduce energy consumption—making it an excellent choice for homeowners who value both comfort and cost savings.

With a 95% AFUE (Annual Fuel Utilization Efficiency) rating, this furnace transforms 95% of its fuel into usable home heat. That means minimal energy waste and maximum savings—especially important during extended cold weather when heating costs can climb.

Designed for downflow configurations, this multi-speed furnace ensures reliable operation and adaptable performance year after year. With a 4-ton capacity and 90,000 BTU output, it’s well-suited for larger homes needing consistent, whole-house warmth.

For added assurance, the MRCOOL 95% AFUE Gas Furnace comes with a 20-Year Heat Exchanger Warranty and a 10-Year Registered Parts Warranty. Count on MRCOOL to deliver energy-smart heating that keeps your home cozy and your costs under control.

Features

• Multi-speed high efficiency (constant torque) blower motor
• Self diagnostics saves last 10 fault codes regardless of power interruption
• Standardized widths for easy coil fit
• 10 year registered parts warranty
• 20 year heat exchanger warranty
• Aluminized steel inshot burners for smooth ignition
• Complies with California’s South Coast Air Quality
• Optional LP kit
• Easily removable slide out blower design
• Constant torque motor produces consistent airflow and even temperatures
• Uses up to 1/3 less energy than a fixed-speed blower
• Left or right utility connections, removable floorbase for bottom return air, zero step horizontal conversion

Specifications

Size and Dimensions