Independent Review · Updated June 2026

3 Ton 17 SEER 97% AFUE 120,000 BTU Goodman Gas Furnace and Air Conditioner System - Upflow

97% efficient furnace paired with high-SEER cooling for year-round comfort

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 120,000 BTU Goodman Gas Furnace and Air Conditioner System - Upflow
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// Bottom Line
This Goodman system excels for homeowners in mixed climates who want solid heating efficiency (97% AFUE) and modern cooling technology (18 SEER1, two-stage compressor). Best suited for upflow installations in homes where furnace replacement timing aligns with AC system upgrades.

Review

The Goodman CAPT4961D4 represents a mainstream approach to combined heating and cooling, pairing a modulating gas furnace with a two-stage air conditioner in a single matched system. Positioned as a solid mid-range option, it targets contractors and homeowners balancing upfront cost against operational efficiency. The upflow A-coil configuration works well in basements and utility closets where space and airflow direction aren't restrictive.

Performance specs tell an interesting story. The furnace delivers 120,000 BTU heating with 97% AFUE, meaning 97 cents of every fuel dollar converts to usable heat, exceptional by historical standards. The AC side produces 35,000 BTU of cooling (matching a true 3-ton capacity) with an 18 SEER1 rating, though unit specs list 5-ton tonnage, which suggests an oversized condenser. Variable-speed ECM blower motor manages up to 2000 CFM, adapting airflow to actual heating and cooling demand. Two-stage compression keeps operation quiet at 71 dB.

Pros & Cons

Pros

  • Exceptional 97% AFUE heating efficiency reduces winter fuel costs significantly compared to 80-90% models
  • 18 SEER1 cooling rating delivers efficient AC performance, earning Energy Star certification
  • Two-stage scroll compressor and variable-speed ECM blower motor provide quiet operation at 71 dB
  • Modulating gas burner adjusts output to match heating demand, improving comfort and efficiency
  • 10-year warranty with online registration provides solid protection for both furnace and AC components

Cons

  • 5-ton AC capacity oversized for typical 3-ton load claims, creating potential efficiency mismatches
  • Requires PVC exhaust flue, limiting retrofit options in homes with masonry chimneys
  • 71 dB noise level runs slightly louder than premium competitors during peak operation

Who Should Buy

Best For

Contractors and homeowners in climates requiring both serious heating and cooling capacity who are installing or replacing upflow systems. Ideal for those seeking ENERGY STAR certification and willing to invest in high-efficiency equipment.

Consider Alternatives If

Anyone needing a downflow-only configuration or those with existing masonry chimneys incompatible with PVC exhaust should look at alternative systems.

3 Ton 17 SEER 97% AFUE 120,000 BTU Goodman Gas Fur
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Installation

Installation requires 115V single-phase 60 Hz power with 21.9 to 35-amp breaker sizing, straightforward for most homes. The upflow configuration needs proper return ductwork below the unit and supply plenum above. PVC exhaust flue requirement limits compatibility with homes using masonry chimneys. Weighing 76 pounds and measuring 30 inches tall by 24.5 inches wide, it fits standard furnace closets. Refrigerant line sets use standard 3/8-inch liquid and 7/8-inch suction lines.

Warranty & Reliability

Goodman provides 10-year comprehensive warranty when you register online after purchase. This covers both furnace and AC components, protecting your investment against defects. Registration is essential, as it determines coverage length. Parts availability is solid given Goodman's national distribution network. Warranty transfers if you sell the home within the term.

Specifications

SKUCAPT4961D4
Brand/ManufacturerGoodman
Cooling BTU35,000
Heating BTU120,000
RefrigerantR410A
Electrical115 V. 1 Phase 60 Hz
Warranty10 Years with Online Registration
Decibel Level (dBA)71
Weight (in lbs)76.000000
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"
Width24.5"
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.
AHRI Certificate Number7424268
Airflow DirectionUpflow/Horizontal
Exhaust Flue RequirementPlastic / PVC
Product FeaturesRebate Available
Furnace Efficiency / AFUE97%
Blower MotorVariable Speed - ECM
Maximum CFM2000
ConfigurationUpflow / Downflow
Flue LocationRight
Burner StagesModulating
Fuel TypePropane, Natural Gas
Liquid Line3/8"
Suction Line7/8"
StyleA-Coil

Frequently Asked Questions

Why does the spec sheet list 5-ton tonnage when this is marketed as a 3-ton system? +
The condenser unit is rated at 5-ton capacity, but pairing it with standard ductwork and a 120,000 BTU furnace creates a functional 3-ton system. This oversizing can slightly reduce seasonal efficiency but provides capacity headroom for extreme weather demand.
Can I install this in a downflow or horizontal configuration? +
The specs indicate both upflow and downflow capability, but the A-coil design and flue location (right side) make upflow the primary intended installation. Verify with Goodman before planning downflow, as ductwork routing and exhaust venting become more complex.
How does 18 SEER1 compare to older SEER ratings? +
18 SEER1 is roughly equivalent to 15-16 SEER under legacy testing. SEER1 uses more realistic conditions, so direct comparisons are imprecise, but this rating represents solid mid-tier efficiency, qualifying for ENERGY STAR status.
Is this system better than a Lennox or Carrier equivalent at the same price point? +
Goodman competes on value and efficiency ratings. This system matches or exceeds many Lennox and Carrier models in AFUE and SEER specs, though premium brands often include upgraded controls and quieter compressors. For budget-conscious buyers, Goodman delivers comparable performance at lower cost.
What happens if I don't register the warranty online? +
Warranty coverage is significantly reduced without registration. Goodman requires proof of online registration within 30 days of installation to activate the full 10-year term. Check your invoice for registration instructions immediately after installation.

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