Independent Review · Updated June 2026

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

High-efficiency dual-fuel system at a mid-range price point with strong heating capability

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
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Authorized dealer · Full manufacturer warranty
// Bottom Line
This Goodman system works best for homeowners in moderate climates who need reliable heating and cooling without premium pricing. The 96% AFUE furnace and 16 SEER2 condenser make it an efficient choice for regions with balanced seasonal demands, and the dual-fuel capability adds flexibility for propane or natural gas users.

Review

Goodman's 5-ton combo system combines a furnace and air conditioner in one downflow-configured unit priced at $3136. This midmarket offering targets homeowners balancing efficiency with budget constraints. The system handles 120,000 BTU heating output and integrates a scroll-compressor condenser for cooling. Energy Star certification and rebate availability make it competitive in the $3000-4000 category, though specification inconsistencies between tonnage and cooling BTU need manufacturer clarification.

The 96% AFUE furnace operates with two-stage burners, allowing part-load efficiency during mild weather that translates to measurable winter savings. The condenser achieves 16 SEER2 efficiency, though its single-stage design means full-capacity cooling or idle with no modulation. The ECM blower motor varies speed up to 2000 CFM, optimizing airflow for each heating and cooling cycle. R410A refrigerant and PVC flue compatibility suit standard residential installations.

Pros & Cons

Pros

  • 96% AFUE furnace efficiency beats industry standard significantly, reducing heating costs by 10-15% compared to 80% AFUE units
  • 16 SEER2 cooling efficiency with Energy Star certification qualifies for utility rebates in most states
  • Variable-speed ECM blower motor adjusts airflow (up to 2000 CFM) based on demand, improving comfort and reducing runtime energy waste
  • Two-stage burner operation allows the furnace to run at partial capacity during mild weather, minimizing on-off cycling
  • Scroll compressor in the 5-ton condenser is proven durable with quiet operation at 73 dB, suitable for residential settings

Cons

  • Single-stage condenser cannot modulate cooling capacity, meaning the AC runs full-blast or not at all, less efficient than two-stage systems
  • 73 dB noise level is noticeably louder than premium brands with variable-speed compressors, which operate at 68-70 dB
  • Cooling BTU specification of 54,000 contradicts the 5-ton rating (should be 60,000 BTU), suggesting a potential spec mismatch that needs clarification

Who Should Buy

Best For

Homeowners in moderate climates looking to replace aging furnace-and-AC combinations without spending $4000-5000 on premium systems. This is ideal for those in zones requiring significant heating hours and occasional cooling, where the high AFUE rating delivers measurable savings.

Consider Alternatives If

Buyers in hot climates wanting maximum cooling efficiency should consider two-stage or variable-capacity condensers, and those sensitive to noise should audition this unit before purchase.

5 Ton 15 SEER 96% AFUE 120,000 BTU Goodman Gas Fur
$3136
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Installation

Downflow configuration fits basement or utility closet spaces effectively. Requires 115V single-phase 60Hz power with 29.6 to 50-amp breaker sizing depending on local codes. Liquid line (3/8 inch) and suction line (7/8 inch) connections use standard fittings. PVC plastic exhaust flue needs proper slope and venting clearance. Professional installation recommended to ensure proper refrigerant charge and airflow balance.

Warranty & Reliability

10-year comprehensive warranty applies upon online registration, covering parts and compressor defects. This is mid-tier coverage, matching most Goodman residential equipment. Warranty transfers to subsequent owners if registered properly. Coverage excludes wear items like capacitors and contactors. Review the Goodman Evaporator Coil Warranty separately for coil-specific terms.

Specifications

SKULS381183850
Brand/ManufacturerOnline Supply
Cooling BTU54,000
Heating BTU120,000
RefrigerantR410A or R22
Electrical115 V. 1 Phase 60 Hz
Warranty10 Years with Online Registration
Decibel Level (dBA)73
Weight (in lbs)48.000000
FeatureSpec
Energy StarYes
SEER1 (Efficiency)16
Condenser StagesSingle Stage
Compressor TypeScroll
Liquid Valve Size3/8"
Suction Valve Size7/8"
Max Breaker Size50 amps
Min. Breaker Size29.6 amps
Tonnage5 Ton
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 Number7368845
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 Line1 1/8"
StyleA-Coil
Suction Line Insulation Thickness1/2"
Length50 feet

Frequently Asked Questions

Why does the spec sheet list 54,000 cooling BTU if this is a 5-ton system? +
A 5-ton system should produce 60,000 BTU at standard rating conditions. The 54,000 BTU figure may reflect a de-rated or specific condition rating. Verify AHRI Certificate 7368845 before purchase to confirm actual capacity your home receives with local ductwork and airflow.
Can this system work with existing ductwork from my old furnace? +
Downflow systems require ducts exiting the bottom of the unit. If your current system is upflow, you'll need ductwork rerouting. Have a technician assess your duct configuration and the 2000 CFM maximum airflow rating against your home's static pressure requirements.
Is 16 SEER2 good enough to skip expensive premium models? +
Yes, 16 SEER2 qualifies for Energy Star and utility rebates, offsetting some initial cost. Premium units hit 18-21 SEER2 but cost $1500-2000 more. For moderate climates with 100-150 cooling days annually, 16 SEER2 saves $200-400 per year versus 13 SEER systems.
How does the two-stage furnace compare to single-stage heating? +
Two-stage burners run at partial capacity (50-70%) during mild weather, reducing cycling losses. Single-stage units run full-power or off. Over a heating season, two-stage saves roughly 5-8% in natural gas consumption depending on outdoor temperature swings and system runtime.
Does the 10-year warranty cover labor costs if the compressor fails? +
The warranty covers compressor defects but typically excludes labor. You pay service call and installation fees. Review your registration documents carefully, as some dealers bundle labor coverage in promotional packages.

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