Review
The Goodman GMVM970804CN occupies a practical middle ground in the residential HVAC market. At $736, this 3-ton upflow system combines gas furnace and air conditioning in one package, making it attractive for full-system replacements. Goodman's reputation for straightforward, serviceable equipment appeals to both homeowners and contractors. The unit carries Energy Star certification and includes a 10-year warranty with online registration, signaling manufacturer confidence in durability.
Performance specs justify the mid-market positioning. The air conditioning side delivers SEER 18 efficiency through a two-stage scroll compressor and R410A refrigerant, translating to meaningful cooling savings for homes experiencing hot summers. Heating efficiency reaches 97% AFUE with an 80,000 BTU modulating burner that adjusts output rather than cycling on and off. The variable-speed ECM blower motor runs at capacity matching demand, avoiding the energy waste of constant high-speed operation. Maximum airflow of 1,600 CFM suits standard three-ton ductwork.
Pros & Cons
Pros
- SEER 18 cooling efficiency with two-stage compressor delivers measurable energy savings on cooling bills
- 97% AFUE furnace rating means efficient heating, especially for homes in moderate to cold climates
- Modulating burner stages optimize gas usage rather than simple on-off operation
- Variable-speed ECM blower motor adjusts to actual heating and cooling demand, reducing runtime waste
- Energy Star certified with 10-year warranty when registered online, providing reasonable protection
Cons
- Tonnage spec mismatch: listed as both 3 ton and 3.5 ton across documentation, creating uncertainty
- 71 dB noise level is noticeably louder than premium competitors, may be heard from adjacent rooms
- Requires 115V single-phase power and 21.9 to 35 amp breaker, limiting some installation scenarios
Who Should Buy
Best For
Homeowners in moderate to cold climates replacing 10+ year old systems, and HVAC contractors stocking reliable mid-range inventory for price-sensitive customers. This system delivers measurable efficiency gains without luxury pricing.
Consider Alternatives If
Anyone in extremely hot climates where cooling dominates energy costs should compare three-stage compressors, and homes near bedrooms should consider quieter models below 68 dB.
Installation
Professional installation is mandatory, not optional. Gas connections require licensed technician work in most jurisdictions due to safety codes. The unit requires 115V single-phase power with 21.9 to 35 amp breaker capacity. Upflow configuration with A-coil design fits typical attic or basement installations. PVC exhaust flue is acceptable. Weight of 142 pounds demands proper support, especially if ceiling-mounted.
Warranty & Reliability
Goodman backs this system with 10 years parts and labor coverage upon online registration. This is above baseline but below premium manufacturer warranties. Registration is simple and typically costs nothing. Coverage applies to manufacturing defects but excludes neglected maintenance or improper installation. Most contractors include this as standard practice.
Specifications
| SKU | GMVM970804CN |
| Brand/Manufacturer | Goodman |
| Cooling BTU | 35,000 |
| Heating BTU | 80,000 |
| Refrigerant | R410A |
| Electrical | 115 V. 1 Phase 60 Hz |
| Warranty | 10 Years with Online Registration |
| Decibel Level (dBA) | 71 |
| Weight (in lbs) | 142.000000 |
| Feature | Spec |
| Energy Star | Yes |
| SEER1 (Efficiency) | 18 |
| Condenser Stages | Two Stage |
| Compressor Type | Scroll |
| Liquid Valve Size | 3/8" |
| Suction Valve Size | 7/8" |
| Max Breaker Size | 35 amps |
| Min. Breaker Size | 21.9 amps |
| Tonnage | 3.5 Ton |
| Valve Type | Sweat |
| Height | 34.5" |
| Width | 21" |
| Depth | 28.75" |
| Resources | Goodman Brochure Goodman Installations Instructions Goodman Parts Manual Goodman Service Manual Goodman Specifications Goodman Technical Information Goodman User Information Goodman Warranty You will need Adobe® Acrobat® Reader to view PDF documents. |
| Safety Information | This gas appliance requires a trained technician to install. Improperly connecting gas lines or improperly connecting a gas flue or venting may result in death. By purchasing this item, you are agreeing that you are using a trained technician to install this gas appliance. We will not be responsible for any injury or property damage arising from improper service or service procedures. Whoever installs or services this unit assumes responsibility for any personal injury or property damage which may result. Many jurisdictions require a license to install this equipment. PROPOSITION 65 WARNING This product and many products on our site may contain a chemical know to the state of California to cause cancer or birth defects or other reproductive harm. For more information about Proposition 65 please Click Here. |
| Configuration | Upflow/Horizontal |
| Liquid Line | 3/8" |
| Suction Line | 7/8" |
| Style | A-Coil |
| AHRI Certificate Number | 7424266 |
| Airflow Direction | Upflow/Horizontal |
| Exhaust Flue Requirement | Plastic / PVC |
| Furnace Efficiency / AFUE | 97% |
| Blower Motor | Variable Speed - ECM |
| Maximum CFM | 1600 |
| Burner Stages | Modulating |
| Fuel Type | Propane, Natural Gas |
Frequently Asked Questions
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