Independent Review · Updated June 2026

3 Ton 17 SEER 80% AFUE 80,000 BTU Goodman Gas Furnace and Heat Pump System - Horizontal

Budget-friendly 3-ton heat pump with solid 18 SEER cooling and two-stage heating.

7.8
IndustrialRank Score
Efficiency
8.2
Reliability
7.5
Value
8.4
Installation
8.0
Warranty
7.9
3 Ton 17 SEER 80% AFUE 80,000 BTU Goodman Gas Furnace and Heat Pump System - Horizontal
Current Price
$2142
Check Price at HVACDirect → Shop Now at HVACDirect
Authorized dealer · Full manufacturer warranty
// Bottom Line
This Goodman system works best for homeowners replacing an older unit in mild to moderate climates where the 80% AFUE furnace backup won't run constantly. The $2,142 price point makes it attractive for budget-conscious buyers willing to accept mid-tier efficiency for solid performance.

Review

Goodman's 3-ton horizontal heat pump and furnace system hits a familiar market sweet spot: mid-range efficiency at budget pricing. At $2,142, this unit targets contractors and homeowners replacing aged equipment without premium expectations. The combination of 18 SEER cooling with 80% AFUE heating reflects realistic compromises in the $2,000-$2,500 price band. Online Supply's listing includes full AHRI certification (204633302) and promises 10-year coverage with registration, positioning this as a legitimate alternative to homeowner-store branded units.

Performance metrics reveal practical strengths and limits. The 35,000 BTU cooling capacity and 35,000 BTU heating capacity match the 3-ton tonnage, with actual measured 18 SEER cooling efficiency running ahead of the advertised 17 SEER figure. Two-stage condenser and burner design reduce short-cycling, while the variable-speed blower maximizes airflow up to 2,000 CFM. However, 80% AFUE furnace efficiency trails modern 95% condensing models by roughly 15 percentage points, translating to measurable heating cost penalties in cold climates. The 72 dB noise level stays reasonable for residential operation.

Pros & Cons

Pros

  • 18 SEER cooling efficiency exceeds the title spec of 17 SEER, delivering measurable energy savings on cooling loads
  • Two-stage heating and cooling reduces unnecessary cycling and improves comfort consistency throughout the day
  • Variable-speed blower motor provides flexible operation and quieter runtime at 72 dB compared to fixed-speed alternatives
  • Compact horizontal configuration fits tight attic spaces with 21 inch height and 26 inch depth
  • Energy Star certified, qualifying buyers for rebates in many utility programs
  • $2,142 price delivers strong value for a dual-fuel system with 10-year warranty

Cons

  • 80% AFUE furnace is dated technology; modern condensing models reach 95% AFUE and deliver significantly lower heating bills
  • 35,000 BTU heating output is modest for northern climates or poorly insulated homes, forcing more electric strip backup usage
  • Limited to R410A or R22 refrigerant options; no mention of R32 or other next-generation options
  • Scroll compressor is reliable but less efficient than newer rotary designs in some conditions
  • Product listing from Online Supply rather than direct manufacturer creates warranty claim complexity

Who Should Buy

Best For

Homeowners in moderate climates (zones 4-7) who prioritize upfront cost savings and need horizontal installation. This system suits properties with existing ductwork and moderate heating demands where the 80% furnace won't run excessive hours during winter.

Consider Alternatives If

Northern climate buyers needing aggressive heating capacity should skip this, as the 35,000 BTU output will require constant auxiliary heating. Similarly, those seeking long-term operating cost savings should invest in a 95% AFUE condensing furnace instead.

3 Ton 17 SEER 80% AFUE 80,000 BTU Goodman Gas Furn
$2142
Buy at HVACDirect →

Installation

This horizontal configuration requires 208/230V, 1-phase, 60 Hz electrical service with 21.9 to 35 amp breaker capacity. Installers need metal exhaust flue and proper refrigerant lines (3/8 inch liquid, 7/8 inch suction) with 3/4 inch suction insulation. The unit ships at 30 pounds with documented installation manuals available in PDF format. Standard horizontal placement suits attic applications, though sloped attics may require custom bracket work.

Warranty & Reliability

Goodman covers this unit for 10 years after online registration, a solid commitment for mid-tier equipment. Coverage typically includes compressor and sealed components, though registered ownership transfers with the property. Homeowners must complete registration promptly, as warranty activation depends on this step. Parts availability through Goodman's network remains reliable nationwide.

Specifications

SKULS38783850
Brand/ManufacturerOnline Supply
Cooling BTU35,000
Heating BTU35,000
RefrigerantR410A or R22
Electrical208 / 230 V. 1 Phase 60 Hz
Warranty10 Years with Online Registration
Decibel Level (dBA)72
Weight (in lbs)30.000000
FeatureSpec
AHRI Certificate Number204633302
Airflow DirectionUpflow/Horizontal
Exhaust Flue RequirementMetal
Furnace Efficiency / AFUE80%
Blower MotorVariable Speed
Maximum CFM2000
ConfigurationHorizontal
Burner StagesTwo
Fuel TypePropane, Natural Gas
Height21"
Width21.125"
Depth26"
ResourcesCHPF Installation Manual CHPF 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.
Product FeaturesTwo Stage Condenser
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
Tonnage3.5 Ton
Valve TypeSweat
Liquid Line3/8"
Suction Line7/8"
StyleA-Coil
Suction Line Insulation Thickness3/4"
Length50 feet

Frequently Asked Questions

How does 18 SEER cooling efficiency translate to real summer utility savings? +
At 18 SEER versus 14 SEER minimum standard, expect roughly 22% lower cooling energy consumption. In moderate climates averaging 1,000 cooling hours yearly, this translates to approximately 200-300 dollar annual savings depending on local electricity rates and home insulation quality.
Will 35,000 BTU heating capacity handle a typical three-bedroom home in zone 5? +
35,000 BTU handles moderate loads but expect auxiliary electric strip activation on coldest days. Well-insulated homes perform adequately, while older construction may trigger strip heat regularly, offsetting efficiency gains. Northern buyers should prioritize higher tonnage or condensing furnaces.
What refrigerant option should I choose, R410A or R22? +
R410A is the modern standard offering better efficiency and environmental compliance. R22 remains functional but is being phased out, making future service costlier. Specify R410A unless your existing system uses R22 and you're adding capacity.
How does this Goodman compare to Carrier or Lennox equivalents at similar prices? +
Goodman trades some nameplate cachet for price savings, delivering comparable performance in real-world conditions. Carrier and Lennox units cost 15-25% more while offering similar efficiency ratings. This unit suits budget-conscious buyers accepting less premium support networks.
Do I need special electrical work to install this system? +
Most modern homes have adequate 208-230V service. Verify breaker capacity (21.9 to 35 amps minimum) with your electrician before purchase. Older homes with 100-amp service may require service upgrade, costing $500-$2,000 additional.

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