Independent Review · Updated June 2026

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

97% AFUE furnace paired with 18 SEER2 cooling delivers premium efficiency and quiet operation

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 100,000 BTU Goodman Gas Furnace and Air Conditioner System - Upflow
Current Price
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// Bottom Line
This Goodman system excels for homeowners in moderate to cold climates seeking high-efficiency heating and cooling in one package. The 97% AFUE furnace and 18 SEER2 condenser deliver measurable energy savings, making it ideal for those planning to stay in their homes long enough to recoup the investment.

Review

The Goodman CAPF4961C6 represents the manufacturer's push into the premium efficiency segment, pairing a gas furnace with cooling capacity in a single upflow unit. At 97% AFUE and 18 SEER2, this system targets homeowners willing to invest upfront for lower operating costs. The unit ships at 46 pounds and fits standard equipment closets at 30 inches tall by 21 inches deep. Goodman's reputation for reliability combines with Energy Star certification to attract both contractors and DIY-minded homeowners exploring grid-friendly HVAC solutions.

Performance specs are genuinely strong. The furnace delivers 100,000 BTU heating output using modulating burner stages that fire at varying intensities rather than simple on-off cycles. Cooling reaches 47,000 BTU capacity with a two-stage scroll compressor running on R410A or R22 refrigerant. The variable-speed ECM blower pushes up to 2,000 CFM, intelligently adjusting speed to match heating and cooling demand. At 72 dB during full operation, noise levels stay acceptable for basement or attic placement, though not silent like premium models.

Pros & Cons

Pros

  • 97% AFUE furnace rating means only 3% heat loss, among the highest available for gas furnaces
  • 18 SEER2 cooling efficiency significantly exceeds the federal minimum of 14 SEER2
  • Modulating burner stages reduce cycling losses and improve comfort by varying heat output
  • Variable-speed ECM blower adjusts airflow for quieter operation and better dehumidification
  • Energy Star certified system qualifies for utility rebates in many regions
  • Two-stage compressor with scroll technology delivers consistent cooling at 47,000 BTU

Cons

  • 5-ton condenser capacity exceeds the advertised 4-ton system rating, creating potential compatibility issues
  • 72 dB noise level is moderately loud compared to premium single-stage units during full load
  • Plastic PVC flue requirement limits installation flexibility in some older homes
  • 10-year warranty requires online registration, which some buyers find inconvenient

Who Should Buy

Best For

Contractors and homeowners in northern climates who heat heavily during winter months and need both reliable cooling and minimal gas bills. This system particularly suits retrofit applications where existing ductwork is compatible with upflow configuration.

Consider Alternatives If

Budget-conscious buyers seeking minimal upfront cost, or homeowners in mild climates where high-efficiency heating produces weak ROI. Skip this if your home lacks proper ductwork for upflow installation.

4 Ton 17 SEER 97% AFUE 100,000 BTU Goodman Gas Fur
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Installation

Installation requires 115V single-phase 60Hz power with a 29.3 to 50-amp breaker, fitting standard home electrical service. The upflow configuration suits basement or closet mounting with horizontal discharge options. Plastic PVC flue pipes are required for exhaust venting, which simplifies installation in many homes but eliminates metal flue options. Standard field refrigerant charging and ductwork balancing apply.

Warranty & Reliability

Goodman includes a 10-year comprehensive warranty when you register online after purchase. Coverage includes parts and compressor protection, though labor is not covered under the standard terms. Online registration must be completed within 60 days of installation to activate coverage, making documentation critical for warranty claims.

Specifications

SKUCAPF4961C6
Brand/ManufacturerGoodman
Cooling BTU47,000
Heating BTU100,000
RefrigerantR410A or R22
Electrical115 V. 1 Phase 60 Hz
Warranty10 Years with Online Registration
Decibel Level (dBA)72
Weight (in lbs)46.000000
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"
Width21"
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 Number7424267
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 tons cooling when the product name says 4 tons? +
The 47,000 BTU condenser capacity converts to approximately 3.9 tons, which may have been rounded to 5 tons in the specs database or represent a bundled package. Verify cooling tonnage against your load calculation before purchasing to ensure proper system sizing for your home.
Can I install this in an attic or must it stay in the basement? +
Upflow configuration works best in basements or ground-level closets where return air pulls downward. Attic installation is possible if you have space, but you'll need to accommodate the right-side flue exit and ensure adequate clearance for airflow around the unit.
How much energy will I actually save compared to a standard 80% AFUE furnace? +
A 97% AFUE system saves roughly 17% on heating costs versus 80% AFUE over the heating season. Actual savings depend on local gas prices, climate, and home insulation, but expect $200-400 annual reduction in a cold climate home.
Is 18 SEER2 better than models advertised as 16 SEER2? +
Yes, 18 SEER2 delivers approximately 12% better cooling efficiency than 16 SEER2, translating to lower summer electric bills. The efficiency gain compounds over the system's 15-20 year lifespan, justifying the premium price in hot or humid climates.
Do I need a contractor to install this, or can a handy homeowner handle it? +
Refrigerant handling, electrical connections, and gas line work legally require licensed HVAC contractors in most states. Attempting DIY installation voids warranty and violates EPA regulations. Professional installation costs $1,500-2,500 total.

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