Gas Furnaces
Today's new high efficiency furnaces can save up to 50% in operating costs over a ten-year-old furnace. Many 1990 and earlier model furnaces have Annual Fuel Utilization Efficiency (AFUE) ratings of 65% or less. The minimum AFUE rated furnace that can be sold in the United States today is 80% for the Southeast and Southwest, with 90% being the minimum in the North.
Our current product offering starts at 80% AFUE and goes all the way to a very efficient 98%+ AFUE rating. Depending on your average usage, higher AFUE rated furnaces can significantly reduce your gas bill.
The DOE’s regional breakdown by state is as follows:
- North – 80% AFUE
- Southeast – 90% AFUE
- Southwest - 90% AFUE

Let M & B Heating and Air Conditioning Help Pick The Right Furnace For Your Home
We offer many furnaces with variable and multi-speed features that can provide enhanced indoor comfort by slowly ramping up to your thermostat setting rather than simply turning on at full speed. This alleviates the "cold air blow" often associated with single speed furnaces, and dramatically reduces system noise. Call us now at (317) 318-4642.
Gas Furnace Product Offering
High-Efficiency, Modulating, Variable-Speed, ECM Gas Furnace-R32View Brochure |
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| Model Family: GRVM97-R32 |
| Annual Fuel Utilization Efficiency: Up to 97% AFUE |
| Energy Star Certified: ENERGY STAR® Certified |
| Blower Motor: VariableSpeed ECM |
| Gas Valve: Modulating |
| Inducer Draft Motor: variable-speed induced draft blower |
| Fan Heating Operation: Multiple continuous fan speed options |
| Factory Warranty Parts: 10-Year Parts Limited Warranty |
| Heat Exchanger Warranty: 20-Year Heat Exchanger Limited Warranty + One-Time Heat Exchanger Replacement Limited Warranty* (Yrs 21-99) |
| Sound Level: Quiet operation |
Manufacturer's Stated Benefits:
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Two-Stage, Multi-Speed, ECM Gas Furnace GD9T96View Brochure |
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| Model Family: GD9T96-R32 |
| Annual Fuel Utilization Efficiency: Up to 96 AFUE |
| Energy Star Certified: ENERGY STAR Certified |
| Blower Motor: Energy-efficient, multi-speed ECM blower motor |
| Gas Valve: Two-stage gas valve |
| Inducer Draft Motor: Quiet two-speed induced draft blower |
| Fan Heating Operation: Low continuous fan speed |
| Factory Warranty Parts: 10-Year Limited Warranty |
| Heat Exchanger Warranty: Lifetime Limited warranty |
| Sound Level: Quiet Operation |
Manufacturer's Stated Benefits:
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Single-Stage, Multi-Speed, ECM Gas FurnaceView Brochure |
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| Model Family: GR9S92-R32 |
| Annual Fuel Utilization Efficiency: Up to 92% AFUE |
| Energy Star Certified: No |
| Blower Motor: Multi-speed ECM blower motor |
| Gas Valve: Single-stage gas valve |
| Inducer Draft Motor: Quiet single-speed induced draft blower |
| Fan Heating Operation: Single Stage |
| Factory Warranty Parts: 10-Year Parts Limited Warranty |
| Heat Exchanger Warranty: 99YR Heat Exchanger Limited Warranty with registration within 60 days |
| Sound Level: Quiet Operation |
Manufacturer's Stated Benefits:
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Single-Stage, Multi-Speed ECM, Multi-Position Gas FurnaceView Brochure |
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| Model Family: GR9S80-R32 |
| Annual Fuel Utilization Efficiency: 80% AFUE |
| Energy Star Certified: No |
| Blower Motor: Multi-speed ECM blower motor |
| Gas Valve: Single-stage gas valve |
| Inducer Draft Motor: Quiet, single-speed draft induced |
| Fan Heating Operation: Single Stage |
| Factory Warranty Parts: 10-Year Parts Limited Warranty |
| Heat Exchanger Warranty: Lifetime Heat Exchanger Limited Warranty |
| Sound Level: Quiet Operation |
Manufacturer's Stated Benefits:
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