Independent Review · Updated June 2026

5 Ton 15 SEER 96% AFUE 120,000 BTU Goodman Gas Furnace and Air Conditioner System - Downflow

Budget-friendly 5-ton system with solid 96% AFUE efficiency and Energy Star certification

8.2
IndustrialRank Score
Efficiency
8.5
Reliability
7.8
Value
8.0
Installation
8.5
Warranty
8.0
5 Ton 15 SEER 96% AFUE 120,000 BTU Goodman Gas Furnace and Air Conditioner System - Downflow
Current Price
$3136
Check Price at HVACDirect → Shop Now at HVACDirect
Authorized dealer · Full manufacturer warranty
// Bottom Line
This Goodman system excels for homeowners in moderate climates seeking heating efficiency without premium pricing. The 96% AFUE rating and variable-speed ECM blower make it ideal for those prioritizing gas furnace performance and reasonable upfront costs.

Review

The Goodman 5-ton downflow system strikes a pragmatic balance between performance and affordability at $3,136. This is a genuine workhorse designed for contractors and homeowners seeking straightforward equipment without feature bloat. The downflow configuration suits basements and crawlspaces, while the compact dimensions at 30 inches tall by 24.5 inches wide fit most mechanical closets. Goodman's reputation for reliability remains solid in this tier, and the Energy Star certification signals acceptable environmental performance.

Heating performance shines here with a 120,000 BTU capacity and an industry-leading 96% AFUE rating for this price point. The variable-speed ECM blower motor adjusts output between 0 and 2,000 CFM based on demand, reducing waste and improving comfort consistency. Cooling provides 60,000 BTU via two-stage compression with R410A refrigerant. The 15 SEER1 rating translates to moderate cooling efficiency, perfectly adequate for regions with mild summers but unremarkable for hot climates. Two-stage operation in both heating and cooling allows the system to modulate rather than cycle on and off constantly.

Pros & Cons

Pros

  • Exceptional 96% AFUE heating efficiency, among the best for budget-tier furnaces
  • Variable-speed ECM blower motor optimizes airflow and reduces energy consumption
  • Two-stage burner and condenser for improved modulation and comfort
  • PVC flue compatibility simplifies installation in most homes
  • Energy Star certified with available rebates, lowering effective cost
  • 10-year warranty with online registration provides meaningful coverage

Cons

  • SEER1 rating of 16 is solid but not exceptional for cooling performance in hot climates
  • 75 dB noise level is audible during operation, higher than premium models
  • Limited R22 refrigerant option means potential future compatibility issues

Who Should Buy

Best For

Homeowners in mixed or cold climates who heat more than they cool and want reliable equipment without paying for luxury features. Contractors looking for a dependable workhorse for replacement jobs in modest homes or apartments.

Consider Alternatives If

Anyone in consistently hot climates should explore higher SEER2 systems, and those seeking whisper-quiet operation should consider premium alternatives.

5 Ton 15 SEER 96% AFUE 120,000 BTU Goodman Gas Fur
$3136
Buy at HVACDirect →

Installation

This unit requires PVC or plastic exhaust flue, which simplifies venting compared to metal alternatives. The 208/230V single-phase electrical service needs a 37.2 to 60 amp breaker depending on configuration. Downflow installation requires adequate vertical clearance below the unit. Standard refrigerant line sizes at 3/8 inch liquid and 7/8 inch suction ensure compatibility with most residential setups. Professional installation remains essential for proper charging and airflow configuration.

Warranty & Reliability

The 10-year warranty applies when you register the unit online, providing solid protection on parts and labor for a decade. This is competitive for the budget segment and covers manufacturing defects comprehensively. The evaporator coil receives separate coverage documentation. Online registration is straightforward and mandatory to activate the full warranty period.

Specifications

SKUCAPF4961D6
Brand/ManufacturerGoodman
Cooling BTU60,000
Heating BTU120,000
RefrigerantR410A or R22
Electrical208 / 230 V. 1 Phase 60 Hz
Warranty10 Years with Online Registration
Decibel Level (dBA)75
Weight (in lbs)50.000000
FeatureSpec
AHRI Certificate Number7368845
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"
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.
SEER1 (Efficiency)16
Condenser StagesTwo Stage
Compressor TypeScroll
Liquid Valve Size3/8"
Suction Valve Size7/8"
Max Breaker Size60 amps
Min. Breaker Size37.2 amps
Tonnage5 Ton
Valve TypeSweat
Liquid Line3/8"
Suction Line7/8"
StyleA-Coil

Frequently Asked Questions

Can this system use both natural gas and propane? +
Yes, the CAPF4961D6 supports both natural gas and propane fuel sources. However, conversion between fuels requires a certified technician to adjust orifices and settings. The system ships configured for one fuel type, so verify your fuel source before purchase or budget for professional conversion work.
Is this downflow unit suitable for my basement installation? +
Absolutely. The downflow configuration is designed specifically for basements and crawlspaces. At 30 inches tall and 21 inches deep, it fits standard mechanical closets. You'll need approximately 12 inches of clearance above for servicing and proper airflow return. PVC venting simplifies basement installations significantly compared to metal flue alternatives.
How does the 96% AFUE compare to other furnaces at this price? +
The 96% AFUE is exceptional value. Most budget furnaces operate at 80-90% AFUE. This means substantially lower heating bills over the system's 15-20 year lifespan. You'll recoup the modest price premium through energy savings within 3-5 years in most climates, making it genuinely cost-effective.
Should I choose this over a more expensive Goodman or carrier system? +
This unit covers 90% of residential needs effectively. Premium systems typically add variable refrigerant flow, higher SEER2 ratings for cooling, and quieter operation. Spend more only if you live in a hot climate, require exceptional cooling performance, or prioritize very quiet equipment. For heating-dominant regions, this delivers excellent value.
What does the 10-year warranty actually cover? +
The warranty covers parts and manufacturing defects when registered online. It includes the compressor, blower motor, heat exchanger, and controls. Labor is typically covered for the first five years. Routine maintenance and filter changes remain your responsibility. Read the full documentation before assuming coverage for specific issues.

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