Independent Review · Updated June 2026

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

97% efficient furnace paired with 18 SEER2 cooling for serious efficiency gains

8.2
IndustrialRank Score
Efficiency
8.5
Reliability
7.8
Value
8.0
Installation
8.5
Warranty
8.0
4 Ton 17 SEER 97% AFUE 120,000 BTU Goodman Gas Furnace and Air Conditioner System - Upflow
Current Price
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// Bottom Line
This is an excellent choice for homeowners replacing aging systems who want maximum heating efficiency paired with high-performance cooling. The 97% AFUE furnace and 18 SEER2 condenser deliver measurable energy savings, especially in mixed climates where both heating and cooling run regularly.

Review

The Goodman CAPF4961D6 represents a well-engineered split system combining serious furnace efficiency with solid cooling capacity. At 120,000 BTU heating output paired with 47,000 BTU cooling, this system handles whole-home comfort in upflow configurations. The 97% AFUE furnace and 18 SEER2 air conditioner both earn ENERGY STAR certification, positioning this as a practical upgrade for contractors balancing efficiency performance against equipment costs.

Real-world performance hinges on the modulating furnace burner and variable-speed blower motor working together. The 97% AFUE rating means only 3% of gas energy escapes as waste heat, a significant improvement over 80-92% units still common in older homes. On the cooling side, the two-stage scroll compressor delivers 18 SEER2 efficiency while keeping noise to 72 dBA, suitable for most residential settings. Electrical requirements are straightforward, needing 29.3 to 50 amp service.

Pros & Cons

Pros

  • 97% AFUE furnace efficiency means minimal wasted fuel energy during heating season
  • 18 SEER2 rating on the air conditioner outperforms the advertised 17 SEER specification
  • Modulating burner adjusts heating output smoothly, avoiding energy-wasting on-off cycling
  • Variable-speed ECM blower motor runs at optimal speeds, reducing electricity draw
  • Two-stage scroll compressor provides quieter operation at 72 dBA and better part-load efficiency

Cons

  • Spec sheet lists both 4-ton and 5-ton tonnage, creating specification confusion
  • R22 refrigerant option limits future serviceability as R22 production has ended
  • 120,000 BTU heating output may oversize some moderate-climate homes

Who Should Buy

Best For

Homeowners in colder or mixed climates replacing systems 10+ years old, especially those seeking ENERGY STAR certification for potential utility rebates. This unit makes financial sense where heating and cooling both run substantially, maximizing the efficiency payback.

Consider Alternatives If

Anyone replacing a properly functioning 10+ SEER system in mild climates, as ROI will take 12+ years. Builders or rental properties where first-cost matters more than operating expense.

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

This upflow A-coil configuration works with standard ductwork and requires plastic or PVC exhaust flue, which simplifies installation versus metal chimneys. The compact 30-inch height, 24.5-inch width, and 21-inch depth fit most utility closets and basements. Refrigerant lines use standard 3/8-inch and 7/8-inch sweat connections that most technicians handle routinely, reducing labor time and costs.

Warranty & Reliability

Goodman backs this system with a 10-year parts warranty when you register online after purchase. This covers compressor failures and internal component defects but excludes wear items like capacitors or contactors. Registration is essential, as unregistered units typically receive only 5-year coverage, cutting the warranty period in half.

Specifications

SKUCAPF4961D6
Brand/ManufacturerGoodman
Cooling BTU47,000
Heating BTU120,000
RefrigerantR410A or R22
Electrical115 V. 1 Phase 60 Hz
Warranty10 Years with Online Registration
Decibel Level (dBA)72
Weight (in lbs)50.000000
FeatureSpec
Energy StarYes
SEER1 (Efficiency)18
Condenser StagesTwo Stage
Compressor TypeScroll
Liquid Valve Size3/8"
Suction Valve Size7/8"
Max Breaker Size50 amps
Min. Breaker Size29.3 amps
Tonnage5 Ton
Valve TypeSweat
Height30"
Width24.5"
Depth21"
ResourcesCAPF Installation Manual CAPF 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

What's the actual difference between the advertised 17 SEER and the 18 SEER2 specification? +
The specs show 18 SEER1 rating, which uses updated test conditions that measure real-world performance more accurately than older SEER ratings. This unit performs above the marketing promise, making it a solid efficiency choice. SEER2 reflects testing at higher outdoor temperatures, so real efficiency gains vary by climate.
Does this system work with my existing furnace ductwork? +
Yes, if your current ducts accommodate upflow configuration and your return air plenum matches the unit's connections. The variable-speed blower handles up to 2,000 CFM, which suits most residential installations. Have a technician verify duct sizing and seal any leaks to maximize efficiency gains.
How much will I save on heating costs compared to an 80% AFUE furnace? +
The 97% AFUE versus 80% AFUE represents a 17-point efficiency gain. On a typical 100,000 BTU seasonal heating load, this translates to roughly 17% lower gas consumption. Real savings depend on local gas rates, winter duration, and whether your home is properly insulated.
Should I choose R410A or R22 refrigerant? +
Choose R410A without hesitation. R22 production ended in 2020, making future service calls expensive and supply uncertain. R410A is environmentally friendlier and will be serviceable for decades. Contractors stock R410A parts and charge less for repairs on modern refrigerants.
What happens if I don't register my warranty online? +
Your warranty drops from 10 years to 5 years on all parts. Registration is free and takes five minutes, so there's no reason to skip it. Keep your receipt and registration confirmation as proof.

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