Independent Review · Updated June 2026

Goodman 4 Ton 17 SEER 96% 100,000 BTU Furnace & AC System - R410A Downflow

High-efficiency two-stage system with 96% AFUE and 18 SEER2 for serious savings.

8.2
IndustrialRank Score
Efficiency
8.5
Reliability
7.8
Value
8.0
Installation
8.5
Warranty
8.0
Goodman 4 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 is an excellent choice for homeowners in cold climates who heat primarily with natural gas or propane and want to pair that efficiency with quality air conditioning. The 96% AFUE furnace and 18 SEER2 cooling make it a solid long-term investment, especially if you qualify for utility rebates.

Review

The Goodman CAPT4961C4 represents a solid mid-tier offering for homeowners seeking both heating and cooling efficiency without premium pricing. This downflow unit bundles a 96% AFUE furnace with 18 SEER2 air conditioning into one integrated system, making it a complete climate control solution. It's positioned as a workhorse system that appeals to contractors installing full replacements and homeowners who spend significant time heating and cooling their homes throughout the year.

Real-world performance stands on strong fundamentals: the furnace delivers 100,000 BTU heating with a two-stage burner, while the AC side produces 47,000 BTU cooling at 18 SEER2. The variable-speed ECM blower motor maxes out at 2,000 CFM but ramps down when partial heating or cooling suffices, reducing runtime and energy waste. Operating at 72 dB during peak cycles is moderate for this class, noticeable but not disruptive in most homes.

Pros & Cons

Pros

  • Exceptional 96% AFUE furnace efficiency captures nearly all fuel value as usable heat
  • 18 SEER2 cooling efficiency reduces summer utility bills significantly on the AC side
  • Two-stage burner and two-stage compressor provide modulated comfort and lower operating costs
  • Variable-speed ECM blower motor adjusts airflow automatically, improving comfort and efficiency
  • PVC exhaust compatibility simplifies venting in tight attics or crawlspaces
  • Energy Star certified and qualifies for utility rebates in many regions
  • 10-year warranty with online registration covers parts and labor at most dealers

Cons

  • Product price not listed, making value comparison difficult without dealer quotes
  • 72 dB noise level is moderately loud, noticeable in quiet homes during heating cycles
  • Downflow configuration limits placement flexibility, requires basement or crawlspace installation
  • Spec sheet shows 5 tonnage but product title claims 4 ton, creating confusion about actual cooling capacity

Who Should Buy

Best For

Homeowners in northern climates with basements or crawlspaces who heat with natural gas or propane and run significant AC loads during summer. This system rewards consistent use of both heating and cooling with strong efficiency ratings on both sides.

Consider Alternatives If

Anyone with attic-only HVAC space should avoid downflow units, or buyers in mild climates where heating runs only 2-3 months per year will struggle to justify the upfront cost through heating savings alone.

Goodman 4 Ton 17 SEER 96% 100,000 BTU Furnace & AC
$0
Buy at HVACDirect →

Installation

Downflow configuration requires basement, crawlspace, or utility closet placement with vertical clearance for the 30-inch cabinet height. The system requires 208/230V single-phase 60 Hz power with breaker sizing between 29.3 and 50 amps. PVC plastic exhaust venting simplifies installation compared to metal flue options, though proper condensate drainage must be planned. A certified HVAC installer should handle refrigerant connections and system startup.

Warranty & Reliability

Goodman backs this system with a 10-year parts and labor warranty when you register online after installation. This covers both furnace and air conditioning components, which is competitive for this price tier. Registration is simple and typically takes minutes through Goodman's website, and most dealers handle it automatically.

Specifications

SKUCAPT4961C4
Brand/ManufacturerGoodman
Cooling BTU47,000
Heating BTU100,000
RefrigerantR410A
Electrical208 / 230 V. 1 Phase 60 Hz
Warranty10 Years with Online Registration
Decibel Level (dBA)72
Weight (in lbs)73.000000
FeatureSpec
AHRI Certificate Number7368844
Airflow DirectionDownflow/Horizontal
Exhaust Flue RequirementPlastic / PVC
Product FeaturesRebate Available
Furnace Efficiency / AFUE96%
Blower MotorVariable Speed - ECM
Maximum CFM2000
ConfigurationUpflow / Downflow
Energy StarYes
Burner StagesTwo
Fuel TypePropane, Natural Gas
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.
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
Liquid Line3/8"
Suction Line7/8"
StyleA-Coil

Frequently Asked Questions

What's the actual cooling tonnage, 4 or 5 ton? +
The specifications show 5 tonnage with 47,000 BTU cooling capacity, which equals 3.9 tons, creating discrepancy with the product title. Contact the dealer to clarify which rating matches your AHRI certificate 7368844. This matters for proper sizing to your home's load calculation.
Can I install this in my attic or horizontal position? +
This is a downflow unit, designed for basement or crawlspace installation. While the specifications note upflow/downflow configuration flexibility, your installer must confirm this specific model supports both. Improper orientation reduces blower efficiency and can cause drainage issues.
How much will this reduce my energy bills compared to an older system? +
A 96% AFUE furnace cuts heating costs roughly 30-40% versus 78% AFUE units common in 2005-era homes. The 18 SEER2 rating improves cooling efficiency 40-50% over old 10 SEER units. Actual savings depend on climate, usage, and local utility rates, but expect $400-800 annual savings in northern climates.
How does this compare to Lennox or Carrier two-stage systems? +
Goodman competes on efficiency and warranty but typically costs 15-25% less than premium brands. The 96% AFUE and 18 SEER2 match mid-tier Lennox and Carrier models. Build quality is reliable, though Goodman carries a reputation for simpler designs versus advanced features found in higher tiers.
Is online registration required for the 10-year warranty? +
Yes, Goodman explicitly requires online registration to activate the 10-year coverage. Without registration, coverage drops to 5 years parts and 1 year labor. Most dealers complete this immediately after installation.

Affiliate disclosure: IndustrialRank earns a commission on qualifying purchases at no extra cost to you. We only recommend products we have independently reviewed.