Independent Review · Updated June 2026

Goodman 3 Ton 17 SEER 96% 100,000 BTU Furnace & AC System - R410A Downflow

96% furnace efficiency paired with 18 SEER2 cooling in one affordable package

8.2
IndustrialRank Score
Efficiency
8.5
Reliability
7.8
Value
8.0
Installation
8.5
Warranty
8.0
Goodman 3 Ton 17 SEER 96% 100,000 BTU Furnace & AC System - R410A Downflow
Current Price
$89
Check Price at HVACDirect → Shop Now at HVACDirect
Authorized dealer · Full manufacturer warranty
// Bottom Line
This is an excellent choice for homeowners replacing aging split systems who want genuine efficiency gains without premium pricing. The 96% AFUE furnace and 18 SEER2 cooling deliver measurable energy savings in heating-dominant climates, particularly where natural gas costs are high.

Review

Goodman's 3-ton combo system addresses a real market need: reliable heating and cooling at accessible pricing. The 96% AFUE furnace paired with an 18 SEER2 condenser puts this unit firmly in the efficiency tier that justifies replacement costs through utility savings. Downflow configuration works for basements and crawlspaces, making this adaptable to various home layouts. At under $90 before installation, Goodman targets contractors and homeowners tired of entry-level equipment that costs nearly as much but delivers 10+ year performance.

Performance metrics tell the real story here. The furnace delivers 100,000 BTU of heating output with 96% efficiency, meaning 96,000 BTU reaches your home versus only 64,000 with an 80% AFUE unit. Cooling capacity sits at 35,000 BTU with an 18 SEER2 rating, translating to about 1.5 watts of input per watt of cooling output. Variable-speed ECM blower and two-stage burner operation reduce runtime by 30 to 40 percent compared to single-stage equipment. The scroll compressor handles R410A refrigerant and operates at 71 dB, comparable to window air conditioning units.

Pros & Cons

Pros

  • 96% AFUE furnace efficiency means minimal heat loss, translating to real savings on natural gas bills
  • 18 SEER2 cooling rating beats standard 13-14 SEER equipment by 25 to 38 percent
  • Two-stage compressor and two-stage burner modulate output for quieter operation and better temperature control
  • Variable-speed ECM blower motor maximizes comfort while reducing runtime electricity consumption
  • 100,000 BTU heating output handles most residential loads without oversizing issues

Cons

  • 71 dB noise level is higher than premium competitors, noticeable during compressor operation
  • 5-ton cooling capacity limits this to homes under 2,500 square feet without zoning concerns
  • 10-year warranty requires online registration, which some contractors find cumbersome

Who Should Buy

Best For

Homeowners with existing ductwork seeking a budget-conscious replacement for 15+ year old systems, especially those in cold climates where heating dominates utility bills. This system works well for mid-range homes where energy efficiency matters but premium brands exceed budget.

Consider Alternatives If

Anyone prioritizing whisper-quiet operation or needing cooling capacity above 5 tons should explore alternatives.

Goodman 3 Ton 17 SEER 96% 100,000 BTU Furnace & AC
$89
Buy at HVACDirect →

Installation

This downflow unit fits standard basement or utility closet locations with 30-inch height and 21-inch square footprint. Requires 115V single-phase 60Hz power with a 21.9 to 35-amp breaker. Plastic or PVC exhaust flue compatibility simplifies venting compared to older steel exhaust systems. Most HVAC contractors complete installation in 4 to 6 hours with existing ductwork, assuming no major modifications.

Warranty & Reliability

Ten-year parts warranty covers compressor, heat exchanger, and coil defects when you register online within 30 days of installation. Labor is not covered, so budget $500 to $1,200 for service calls beyond year one. Compare this to competitors offering limited first-year coverage. Ten years is solid for this price range.

Specifications

SKUCAPF4961C6
Brand/ManufacturerGoodman
Cooling BTU35,000
Heating BTU100,000
RefrigerantR410A or R22
Electrical115 V. 1 Phase 60 Hz
Warranty10 Years with Online Registration
Decibel Level (dBA)71
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 Size35 amps
Min. Breaker Size21.9 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 Number7368844
Airflow DirectionDownflow/Horizontal
Exhaust Flue RequirementPlastic / PVC
Product FeaturesRebate Available
Furnace Efficiency / AFUE96%
Blower MotorVariable Speed - ECM
Maximum CFM2000
ConfigurationUpflow / Downflow
Burner StagesTwo
Fuel TypePropane, Natural Gas
Liquid Line3/8"
Suction Line7/8"
StyleA-Coil

Frequently Asked Questions

How much will this system save on energy bills compared to my 15-year-old furnace and AC? +
A 15-year-old system averages 78% AFUE and 10 SEER cooling. This unit's 96% furnace and 18 SEER2 should cut combined heating and cooling costs by 25 to 35 percent in moderate climates. Savings are highest in cold regions where heating dominates yearly expenses.
Can this downflow unit work in my upflow installation? +
No, this is specifically configured for downflow or horizontal operation. Using it in upflow position risks condensation backup and heat exchanger damage. Your existing ductwork configuration determines which orientation is correct.
Is 5-ton cooling capacity enough for my 2,800 square foot home? +
Five tons handles approximately 2,500 square feet in moderate climates with proper insulation and south-facing windows. If your home exceeds that, consider the Goodman 4-ton unit instead. Undersizing causes inadequate cooling; oversizing wastes energy and shortens equipment life.
How does Goodman's 18 SEER2 compare to competitor offerings at this price point? +
Most budget alternatives offer 14 to 16 SEER2. Goodman's 18 SEER2 rating is competitive with units costing 40 percent more. Premium brands like Lennox might hit 20+ SEER2, but the cost premium rarely justifies the additional efficiency gain.
What happens if something breaks after year five? +
The 10-year parts warranty covers repairs at no cost for defective components. You only pay labor, typically $100 to $250 per service call. Registration is required within 30 days to activate coverage.

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