Independent Review · Updated June 2026

Goodman 3 Ton 17 SEER 96% 100,000 BTU Furnace & AC System - R410A Downflow

High-efficiency two-stage system combining 96% furnace with 18 SEER cooling

8.2
IndustrialRank Score
Efficiency
8.5
Reliability
7.8
Value
8.0
Installation
8.5
Warranty
8.0
Goodman 3 Ton 17 SEER 96% 100,000 BTU Furnace & AC System - R410A Downflow
Current Price
$0
Check Price at HVACDirect → Shop Now at HVACDirect
Authorized dealer · Full manufacturer warranty
// Bottom Line
This Goodman combo system excels for homeowners seeking balanced heating and cooling efficiency without premium pricing. The 96% AFUE furnace paired with an 18 SEER2 condenser makes it ideal for mixed climates where both seasons demand serious performance.

Review

Goodman's 3-ton (marketed tonnage) downflow system combines a 100,000 BTU furnace with a 35,000 BTU condenser into one balanced heating-cooling package. Positioned as a workhorse mid-tier option, this unit targets cost-conscious homeowners and contractors who prioritize efficiency ratings over brand prestige. The 96% AFUE furnace and 18 SEER2 condenser place it squarely in today's efficiency-conscious market without the premium pricing of name-brand competitors like Lennox or Carrier.

Performance metrics reveal a genuinely capable system. The two-stage scroll compressor and variable-speed ECM blower motor work together to match capacity to actual demand, avoiding the energy waste from constant on-off cycling. At 71 dB, noise levels run acceptable for residential use, though noticeably higher than inverter-driven units. Cooling delivers 35,000 BTU with two-stage precision, while heating provides robust 100,000 BTU output. The 145-pound condenser, sized at 21 inches wide by 28.75 inches deep, fits standard outdoor pads.

Pros & Cons

Pros

  • 96% AFUE furnace efficiency means 96 cents of every heating dollar converts to home warmth, minimizing waste
  • 18 SEER2 rating with two-stage compressor delivers responsive cooling and quieter operation at 71 dB
  • Variable-speed ECM blower motor adjusts airflow automatically, improving comfort and reducing energy consumption
  • Two-stage burner operation matches heating to demand, avoiding temperature swings and extending equipment lifespan
  • Energy Star certified, qualifying for utility rebates that offset initial system cost
  • 10-year parts warranty with online registration provides solid peace of mind for mid-range equipment

Cons

  • 5-ton cooling capacity creates sizing mismatch with 3-ton marketing claim, requiring careful HVAC load calculation
  • Requires licensed technician for gas line installation due to safety protocols and local code requirements
  • 71 dB noise level runs louder than inverter-driven premium models during full-capacity operation
  • Downflow configuration limits installation flexibility for homes without basement or crawlspace placement options

Who Should Buy

Best For

Homeowners in moderate climates upgrading aging furnace-AC combinations who want solid efficiency without paying premium brand prices. Contractors installing split systems for clients seeking 96%+ heating efficiency and competitive cooling performance with rebate eligibility.

Consider Alternatives If

Buyers needing ultra-quiet operation or living in cramped mechanical closets should explore variable-refrigerant-flow models or inverter compressors.

Goodman 3 Ton 17 SEER 96% 100,000 BTU Furnace & AC
$0
Buy at HVACDirect →

Installation

Professional installation is non-negotiable for this gas furnace system. Technicians must verify proper gas line sizing, confirm venting through PVC or plastic flue materials, and ensure electrical setup matches the 115V, 1-phase, 60 Hz requirement with 21.9 to 35-amp breaker capacity. Refrigerant lines require sweat-joint copper with proper flaring. Expect a full day for experienced crews. Ductwork compatibility and downflow configuration availability are critical pre-purchase considerations.

Warranty & Reliability

Goodman backs this system with 10 years of parts coverage when you register online within the first 30 days of purchase. This warranty covers compressor, heat exchanger, and refrigerant circuit components but typically excludes wear items like capacitors and contactors. Registration is straightforward and essential, as warranties default to shorter periods without it. This mid-tier coverage reflects Goodman's positioning between budget brands and premium manufacturers.

Specifications

SKUGCVC961005CN
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)145.000000
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 Number7368844
Airflow DirectionDownflow/Horizontal
Exhaust Flue RequirementPlastic / PVC
Product FeaturesRebate Available
Furnace Efficiency / AFUE96%
Blower MotorVariable Speed - ECM
Maximum CFM2000

Frequently Asked Questions

The listing says 3 ton but specs show 5 ton. Which is correct? +
The unit is a 5-ton cooling system marketed as 3-ton due to marketing conventions. This specification mismatch requires HVAC load calculations before purchasing. Verify the 35,000 BTU cooling capacity matches your home's square footage and climate zone. Oversizing wastes energy and reduces dehumidification efficiency.
Can I install this myself to save money? +
No. Gas furnace installation requires EPA-certified technicians in most jurisdictions. Improper gas connections create deadly carbon monoxide risks and void warranties. Electrical and refrigerant work also demand licensed professionals. Budget $1,500-$2,500 for professional installation labor.
How does 18 SEER2 compare to newer models? +
SEER2 testing uses more realistic conditions than old SEER ratings. At 18 SEER2, this unit performs 15-20% better than typical 13-14 SEER units from ten years ago. Premium inverter models reach 20-22 SEER2 but cost significantly more and require compatible thermostat and controls.
Should I buy this or spend more on a Carrier or Lennox? +
Goodman delivers comparable efficiency at lower cost, though brand reputation and dealer support differ. Carrier and Lennox offer slightly quieter operation and extended warranties. For budget-conscious buyers in competitive markets, Goodman's 96% AFUE and 18 SEER2 provide solid returns on investment without premium pricing.
What does the 10-year warranty actually cover? +
Parts coverage includes compressor, heat exchanger, and refrigerant components. Labor coverage varies by dealer and region, typically ranging from 1-5 years. Register within 30 days online to activate full coverage. Labor, refrigerant, and installation issues require separate HVAC service plans.

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