Best 2 Stage Furnace Options for Your Home
Choosing a two-stage furnace can improve comfort and efficiency by modulating heat output to match demand. This article highlights top two-stage models and related components from trusted brands, focusing on energy savings, installation considerations, and long-term performance. The following picks emphasize 96% AFUE efficiency, multi-speed operation, and flexible configurations for upflow, horizontal, and downflow applications.
| Product | BTU | Stage | Cabinet Width | AFUE |
|---|---|---|---|---|
| Goodman GR9T961004CN | 100,000 | Two-Stage | 21″ | 96% |
| Goodman GR9T960603BN | 60,000 | Two-Stage | 17.5″ | 96% |
| Goodman GRVT961005CN | 100,000 | Two-Stage (Variable-Speed) | 21″ | 96% |
| Goodman GD9T960603BN | 60,000 | Two-Stage | 17.5″ | 96% |
| OEM 36J54-238 Gas Valve | N/A | Two-Stage | N/A | N/A |
Goodman Two-Stage 100k BTU Furnace (GR9T961004CN)
Goodman GR9T961004CN is a upflow/horizontal, multi-speed ECM two-stage furnace rated at 96% AFUE with 100,000 BTU heating capacity. Designed for efficient climate control in medium to larger spaces, it supports 1600 CFM airflow and comes in a 21-inch cabinet width for tighter installations. The two-stage operation helps balance peak warmth with quieter operation and reduced energy usage across variable loads.
Goodman Two-Stage 60k BTU Furnace (GR9T960603BN)
GR9T960603BN offers a compact 17.5-inch cabinet with a two-stage ECM motor and 96% AFUE. This model is well-suited for smaller homes or retrofit projects where space is limited, delivering steady warmth and efficient performance with a 60,000 BTU rating and 1200 CFM airflow. It’s ideal for homeowners seeking a balance between efficiency, cost, and install footprint.
Goodman 80,000 BTU 96% AFUE, 80% System (GR9S960803BN)
GR9S960803BN is an 80,000 BTU furnace with 96% AFUE designed for upflow/horizontal installations. It uses a multi-speed ECM motor to optimize airflow, reduce noise, and improve overall comfort. This model is a solid option for homeowners who want reliable efficiency in standard-size homes and direct-to-venting configurations.
Goodman Downflow Two-Stage Furnace (GD9T960603BN)
GD9T960603BN is a downflow-compatible two-stage furnace with 60,000 BTU and 96% AFUE. Its 17.5-inch cabinet width suits compact spaces, and its ECM motor provides balanced airflow and efficiency for downflow duct layouts commonly used in basements or crawlspace installations. This model expands installation flexibility for retrofit projects where upflow is not feasible.
Goodman 100,000 BTU Variable-Speed Two-Stage Furnace (GRVT961005CN)
GRVT961005CN features a variable-speed ECM motor and two-stage operation for precise comfort and energy efficiency. With a 21-inch cabinet width, this upflow/horizontal furnace replaces older models and emphasizes quiet performance while delivering excellent modulated heat output across varying loads. A robust option for larger homes seeking premium efficiency and control.
Goodman 2 Ton 13.4 SEER2 AC System with 80k BTU Furnace
This bundled system combines a 2-ton SEER2 air conditioner with an 80,000 BTU furnace and an accompanying coil. While primarily marketed as a bundled package, it demonstrates how two-stage and variable-speed heating can pair with efficient cooling to create a cohesive climate solution for American homes, without detailing price specifics or location-based installation notes.
Buying Guide
Key purchase considerations for a two-stage furnace include efficiency, stage control, and installation needs. Look for models with 96% AFUE or higher to maximize energy savings and comfort. Two-stage operation reduces temperature swings and noise compared to single-stage units, but ensure the system matches your home’s size and ductwork capacity.
Installation configuration matters: upflow, horizontal, and downflow designs suit different house layouts. Cabinet width affects fit in tight closets or mechanical rooms—measure available space before selecting a model. Variable-speed ECM motors provide the most refined airflow and quiet operation, albeit at a higher upfront cost.
Compatibility and maintenance are also crucial. Verify that the furnace is compatible with your existing duct system, venting, and electrical supply. Check warranty terms, including registration and professional installation requirements, to ensure long-term coverage. Noise reduction, heat comfort, and energy usage should be weighed against upfront cost and local climate needs.
Performance metrics to compare include BTU capacity, airflow (CFM), and the impact of two-stage or variable-speed operation on peak loads. For homes with variable heating demands or larger footprints, two-stage and variable-speed models generally deliver superior comfort with improved efficiency over traditional single-stage units.