Independent Review · Updated June 2026

3 Ton 17 SEER 97% AFUE 100,000 BTU Goodman Gas Furnace and Air Conditioner System - Downflow

Premium Goodman system delivers 97% heating efficiency and 18 SEER2 cooling in one package

8.2
IndustrialRank Score
Efficiency
8.5
Reliability
7.8
Value
8.0
Installation
8.5
Warranty
8.0
3 Ton 17 SEER 97% AFUE 100,000 BTU Goodman Gas Furnace and Air Conditioner System - Downflow
Current Price
$89
Check Price at HVACDirect → Shop Now at HVACDirect
Authorized dealer · Full manufacturer warranty
// Bottom Line
This Goodman combo system excels for homeowners upgrading from older equipment who want reliable, efficient heating and cooling in one integrated package. The 97% AFUE furnace and 18 SEER2 air conditioner make it ideal for climate zones where both heating and cooling demand is substantial.

Review

The Goodman GCVM971005CN represents a solid middle-market choice for homeowners combining gas furnace and air conditioning into a single system. As an Energy Star certified unit, this downflow configuration fits standard attic or closet installations where space efficiency matters. Goodman maintains consistent availability across the country, and many contractors stock parts readily. At the $89 price point listed, this appears positioned as a value-oriented option in the mid-tier market segment rather than a budget or premium offering.

Performance specs reveal a capable but unbalanced system. The furnace delivers 100,000 BTU heating output at 97% AFUE, meaning nearly all fuel converts to usable heat rather than exhaust loss. However, cooling capacity sits at 35,000 BTU with an 18 SEER2 rating, suggesting the air conditioning component is undersized relative to heating. The modulating burner and variable-speed ECM blower motor provide comfort advantages, maintaining quieter operation at 71 dB and reducing temperature swings. Operating on standard 115V single-phase power with a 21.9 to 35 amp breaker range keeps electrical upgrades minimal.

Pros & Cons

Pros

  • 97% AFUE furnace efficiency significantly reduces natural gas or propane consumption compared to 80-90% units
  • 18 SEER2 air conditioning rating delivers excellent cooling efficiency, Energy Star certified
  • Modulating burner and variable-speed ECM blower motor provide precise temperature control and lower operating noise at 71 dB
  • Two-stage scroll compressor handles partial-load cooling efficiently during mild weather
  • Sweat connections with 3/8 inch liquid and 7/8 inch suction lines support straightforward installation for trained technicians

Cons

  • Product listing contains specification discrepancies, claiming both 3 ton and 5 ton capacity, which creates confusion for sizing accuracy
  • 35,000 BTU cooling capacity suggests undersizing relative to the furnace's 100,000 BTU heating output, limiting year-round balance
  • Requires professional installation by licensed technician with gas safety certification, no DIY option available

Who Should Buy

Best For

Homeowners replacing complete systems who live in climates with substantial heating and cooling seasons want reliable mid-range equipment. Contractors serving residential customers in moderate to cold climates appreciate Goodman's straightforward installation and solid parts availability.

Consider Alternatives If

Buyers seeking premium variable-refrigerant systems, homes in primarily cooling climates where furnace capacity creates overkill, or contractors preferring ultra-high efficiency tier equipment should evaluate alternatives.

3 Ton 17 SEER 97% AFUE 100,000 BTU Goodman Gas Fur
$89
Buy at HVACDirect →

Installation

Professional installation is mandatory, as improper gas line connections create serious safety hazards. The system uses sweat valve connections with standard 3/8 inch liquid and 7/8 inch suction lines, making it compatible with most existing copper piping. Downflow configuration requires vertical installation in an attic or high-mounted closet position. Licensed technicians should verify ductwork sizing matches the 2,000 CFM maximum airflow and confirm gas supply line pressure and type, natural gas or propane.

Warranty & Reliability

Goodman backs this system with a 10-year parts warranty, activated through online registration after purchase. This duration matches industry standard for mid-tier equipment and covers compressor, heat exchanger, and component failures. Labor and refrigerant charges typically fall outside coverage, so confirm your installer's separate service plan options.

Specifications

SKUGCVM971005CN
Brand/ManufacturerGoodman
Cooling BTU35,000
Heating BTU100,000
RefrigerantR410A
Electrical115 V. 1 Phase 60 Hz
Warranty10 Years with Online Registration
Decibel Level (dBA)71
Weight (in lbs)146.000000
FeatureSpec
Energy StarYes
SEER1 (Efficiency)18
Condenser StagesTwo Stage
Compressor TypeScroll
Liquid Valve Size3/8"
Suction Valve Size7/8"
Max Breaker Size35 amps
Min. Breaker Size21.9 amps
Tonnage5 Ton
Valve TypeSweat
Height34.5"
Width21"
Depth28.75"
ResourcesGoodman Brochure Goodman Installation 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 InformationThis 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.
ConfigurationDownflow/Horizontal
Liquid Line3/8"
Suction Line7/8"
StyleA-Coil
AHRI Certificate Number7424272
Airflow DirectionDownflow/Horizontal
Exhaust Flue RequirementPlastic / PVC
Product FeaturesRebate Available
Furnace Efficiency / AFUE97%
Blower MotorVariable Speed - ECM
Maximum CFM2000

Frequently Asked Questions

Why does the listing show conflicting tonnage ratings of 3 ton and 5 ton? +
This is a spec sheet error requiring clarification before purchase. The 35,000 BTU cooling capacity indicates 3-ton equipment, while 5-ton would deliver 60,000 BTU cooling. Confirm with the seller which capacity you are actually purchasing, as this affects system sizing and performance matching.
Can I install this myself if I have HVAC experience? +
No. Gas furnace installation requires a licensed technician in most jurisdictions due to carbon monoxide and combustion safety risks. The manufacturer explicitly states improper gas connection may cause death. Insurance and warranty also void with unlicensed installation.
How does 18 SEER2 compare to other air conditioners on the market? +
18 SEER2 is above-average efficiency, roughly equivalent to older 21 SEER1 ratings. High-tier systems reach 22-24 SEER2, but this Goodman delivers solid savings versus 13-15 SEER2 budget units while maintaining reasonable pricing and parts availability.
Is this system right for a hot climate where cooling runs most months? +
Marginal fit. The 35,000 BTU cooling versus 100,000 BTU heating creates imbalance for predominantly cooling climates. A 5-ton air conditioner with smaller furnace would better serve Phoenix or Miami. Goodman makes better matched configurations for cooling-heavy regions.
What does online warranty registration require? +
Typically Goodman asks for proof of purchase, serial number, and installation date on their website to activate the 10-year coverage. Failure to register usually reduces coverage to five years, making online activation critical immediately after installation.

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