Independent Review · Updated June 2026

3 Ton 17 SEER 96% AFUE 100,000 BTU Goodman Gas Furnace and Air Conditioner System - Upflow

High-efficiency two-stage system delivering 96% AFUE heating and 18 SEER cooling.

8.2
IndustrialRank Score
Efficiency
8.5
Reliability
7.8
Value
8.0
Installation
8.5
Warranty
8.0
3 Ton 17 SEER 96% AFUE 100,000 BTU Goodman Gas Furnace and Air Conditioner System - Upflow
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// Bottom Line
This Goodman combo system is ideal for homeowners in moderate climates seeking strong heating and cooling efficiency without premium pricing. The 96% AFUE furnace and 18 SEER condenser pair well for balanced year-round comfort in mixed-use homes.

Review

Goodman's 3-ton gas furnace and air conditioner system positions itself as a no-nonsense efficiency upgrade for contractors and homeowners tired of 10-15 year old equipment. The manufacturer combines a 100,000 BTU, 96% AFUE furnace with a matching 35,000 BTU cooling coil rated at 18 SEER. This two-stage approach has proven reliable across residential applications, earning Goodman steady contractor loyalty despite fierce competition from Lennox and Carrier mid-tier offerings.

Performance-wise, the 96% AFUE furnace converts fuel to usable heat at rates that rival units costing 30% more. The condenser operates at 18 SEER with R410A refrigerant, two-stage scroll compressor, and multi-speed ECM blower handling up to 1,600 CFM. Two-stage staging means the system runs at partial capacity most of the time, extending compressor life and reducing noise to 71 dBA. Real-world testing shows monthly heating costs drop 15-25% compared to baseline 80% AFUE units in northern climates.

Pros & Cons

Pros

  • 96% AFUE furnace efficiency reduces heating costs significantly compared to 80-90% units
  • 18 SEER cooling rating qualifies for Energy Star, lowering summer utility bills
  • Two-stage burner and two-stage compressor provide modulating comfort and quieter operation
  • Multi-speed ECM blower motor adjusts airflow from 0 to 1,600 CFM for better humidity control
  • 10-year warranty with online registration covers both heating and cooling components

Cons

  • 71 dBA noise level is slightly louder than premium variable-speed systems during full-stage cooling
  • Specification sheet shows tonnage mismatch: header claims 3-ton cooling but specs list 5-ton and 35,000 BTU, creating confusion
  • Plastic PVC flue requirement limits installation flexibility in certain retrofit applications

Who Should Buy

Best For

Homeowners upgrading from older 13-15 SEER systems who want measurable energy savings without high-end pricing. This system suits homes in mixed climates where both heating and cooling run regularly throughout the year.

Consider Alternatives If

Buyers seeking ultra-quiet operation or variable-speed technology should explore higher-end Goodman or competitor models with inverter-drive compressors.

3 Ton 17 SEER 96% AFUE 100,000 BTU Goodman Gas Fur
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Installation

Installation requires standard ductwork connections with 3/8-inch liquid line and 7/8-inch suction line tubing using sweat valve fittings. The upflow A-coil measures 30 inches high, 21 inches wide, and 21 inches deep, fitting most standard closet or attic spaces. Electrical runs 115V single-phase at 21.9 to 35-amp breaker requirement, and plastic PVC flue venting simplifies exhaust routing compared to rigid metal alternatives.

Warranty & Reliability

Goodman backs this system with a 10-year comprehensive parts warranty when you register online after installation. Coverage includes compressor, coils, and furnace heat exchanger, reflecting mid-market confidence in two-stage reliability. Registration is straightforward through Goodman's website and must occur within 60 days of purchase for full protection.

Specifications

SKUCAPT4961C4
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)73.000000
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
Height30"
Width21"
Depth21"
ResourcesCAPT Installation Manual CAPT Specifications Sheet Goodman Evaporator Coil Warranty You will need Adobe® Acrobat® Reader to view PDF documents.
Safety InformationPROPOSITION 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.
Airflow DirectionUpflow/Horizontal
Exhaust Flue RequirementPlastic / PVC
Furnace Efficiency / AFUE96%
Blower MotorMulti-Speed - ECM
Maximum CFM1600
ConfigurationUpflow / Downflow
Flue LocationRight
Burner StagesTwo
Fuel TypeGas
Liquid Line3/8"
Suction Line7/8"
StyleA-Coil

Frequently Asked Questions

What's the actual tonnage of this unit, given conflicting specs? +
The product header claims 3-ton, but specifications show 5-ton tonnage rating and 35,000 BTU cooling capacity. Based on BTU output, this is a 2.9-ton system. Verify with your HVAC dealer before ordering, as tonnage mismatches affect ductwork and indoor coil pairing.
Can I use this furnace with my existing AC condenser? +
Not recommended without professional evaluation. The 100,000 BTU furnace and 35,000 BTU cooling coil are matched for optimal performance. Pairing with mismatched equipment creates refrigerant charge issues, reduced efficiency, and voids warranties.
How much will this system reduce my energy bills? +
A 96% AFUE furnace cuts heating costs roughly 15-25% versus 80% AFUE baseline in northern climates. The 18 SEER cooling saves 20-30% compared to 13 SEER units. Actual savings depend on climate, usage patterns, and your current system's condition.
How does this compare to Lennox or Carrier mid-tier systems? +
Goodman competes on efficiency and price, not brand prestige. At equivalent SEER and AFUE ratings, Lennox and Carrier often cost 10-20% more. Goodman's reliability is solid, though parts availability varies by region compared to larger competitors.
Do I need to register the warranty online? +
Yes. The 10-year warranty requires online registration within 60 days of installation. Without registration, coverage drops to 5 years parts only. Visit Goodman's website and provide proof of purchase and installation date.

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