Independent Review · Updated June 2026

3 Ton 17 SEER 96% AFUE 80,000 BTU Goodman Gas Furnace and Air Conditioner System - Horizontal

96% efficient furnace with 18 SEER cooling, built for tight spaces and budget-conscious retrofits

8.2
IndustrialRank Score
Efficiency
8.5
Reliability
7.8
Value
8.0
Installation
8.5
Warranty
8.0
3 Ton 17 SEER 96% AFUE 80,000 BTU Goodman Gas Furnace and Air Conditioner System - Horizontal
Current Price
$89
Check Price at HVACDirect → Shop Now at HVACDirect
Authorized dealer · Full manufacturer warranty
// Bottom Line
This horizontal coil system excels for homeowners upgrading older equipment in cramped attics or basement spaces where traditional vertical configurations won't fit. The 96% AFUE furnace paired with 18 SEER1 cooling delivers strong efficiency gains, though buyers should verify the listed tonnage discrepancy before purchase.

Review

This Goodman horizontal system targets a specific niche, contractors and homeowners dealing with space restrictions in retrofit installations. The horizontal A-coil configuration makes it popular for cramped attics and crawl spaces where traditional vertical evaporator coils simply won't work. At an attractive entry price point, it appeals to budget-conscious upgrades. However, the specification listing raises immediate questions that warrant investigation before purchase.

Performance specifications show a 96% AFUE furnace delivering 80,000 BTU heating output with two-stage burners for modulated operation. The cooling side rates 18 SEER1 efficiency with 35,000 BTU capacity, using a two-stage scroll compressor and R410A or R22 refrigerant. The variable-speed ECM blower motor adjusts to 1,600 CFM maximum, reducing runtime energy consumption. Energy Star certification confirms these efficiency metrics meet federal standards. The 71 dB noise level remains reasonable for close-quarters installations.

Pros & Cons

Pros

  • Exceptional furnace efficiency at 96% AFUE with two-stage burners for modulated heating
  • High cooling efficiency rated 18 SEER1 using scroll compressor technology
  • Compact horizontal design fits tight spaces, 26 inches wide by 24.5 inches tall
  • Variable-speed ECM blower motor reduces energy waste and improves comfort control
  • Energy Star certified with 10-year warranty when registered online

Cons

  • Product title claims 3 ton system but specs list 5 ton tonnage, creating specification confusion
  • 80,000 BTU heating output underperforms for genuinely cold climates requiring full capacity
  • Relatively low price of $89 suggests this may be a coil-only unit rather than complete system

Who Should Buy

Best For

Contractors and homeowners in moderate climates replacing aged split systems where horizontal configuration is required due to space constraints. This setup works well for attic installations, crawl spaces, or tight basements where vertical air handlers won't physically fit.

Consider Alternatives If

Buyers in harsh northern climates needing substantial heating capacity should look at higher BTU furnaces. Anyone confused by the tonnage discrepancy should clarify specifications before committing.

3 Ton 17 SEER 96% AFUE 80,000 BTU Goodman Gas Furn
$89
Buy at HVACDirect →

Installation

Horizontal configuration requires downflow or horizontal airflow orientation, compatible with most basement or attic layouts. Plastic or PVC exhaust flue connects to furnace discharge. Refrigerant lines use 3/8 inch liquid and 7/8 inch suction sizes with 3/4 inch insulation thickness extending 50 feet maximum. Electrical connection needs 115V single-phase 60 Hz power with 21.3 to 35 amp breaker sizing. Sweat-type valve connections require basic soldering skills.

Warranty & Reliability

Coverage extends 10 years when you register online with manufacturer, standard for Goodman residential equipment. This covers defects in materials and workmanship on the entire system. Registration is straightforward and typically happens during professional installation. Warranty begins from purchase date regardless of registration timing. Online registration documentation comes with product materials.

Specifications

SKULS38783850
Brand/ManufacturerOnline Supply
Cooling BTU35,000
Heating BTU80,000
RefrigerantR410A or R22
Electrical115 V. 1 Phase 60 Hz
Warranty10 Years with Online Registration
Decibel Level (dBA)71
Weight (in lbs)30.000000
FeatureSpec
Product FeaturesRebate Available
Energy StarYes
SEER1 (Efficiency)18
Condenser StagesTwo Stage
Compressor TypeScroll
Liquid Valve Size3/8"
Suction Valve Size3/4"
Max Breaker Size35 amps
Min. Breaker Size21.3 amps
Tonnage5 Ton
Valve TypeSweat
Height24.5"
Width26"
Depth21.125"
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.
AHRI Certificate Number7368843
Airflow DirectionDownflow/Horizontal
Exhaust Flue RequirementPlastic / PVC
Furnace Efficiency / AFUE96%
Blower MotorVariable Speed - ECM
Maximum CFM1600
ConfigurationHorizontal
Burner StagesTwo
Fuel TypePropane, Natural Gas
Liquid Line3/8"
Suction Line7/8"
StyleA-Coil
Suction Line Insulation Thickness3/4"
Length50 feet

Frequently Asked Questions

Does this product include the furnace or is it just a cooling coil? +
The listing describes a complete furnace and air conditioner system with 80,000 BTU heating and 35,000 BTU cooling capacity. However, the $89 price point and lack of detailed shipping information suggest clarification is needed. Contact the seller to confirm whether this is a standalone coil or complete packaged unit before ordering.
What's the discrepancy between the 3 ton title and 5 ton specification? +
The product title states 3 ton capacity, but specifications clearly list 5 ton tonnage. This significant mismatch requires resolution before purchase. The 35,000 BTU cooling output actually aligns with approximately 3 ton rating, suggesting the title is accurate and the spec sheet may contain an error. Verify with retailer.
Will 80,000 BTU heating handle Minnesota winters? +
80,000 BTU furnace works for mild to moderate climates but may undersized for sustained subzero temperatures in northern regions. Most Minnesota homes require 100,000 to 140,000 BTU furnaces. This system suits southern or moderate climates better. Check your home's heat loss calculation before selecting this model for northern installation.
How does 18 SEER1 compare to newer air conditioners? +
18 SEER1 represents strong cooling efficiency, though SEER2 ratings (newer standard) run 15 to 20 percent lower. This unit's actual SEER2 equivalent approximately 14 to 15, still respectable. The two-stage compressor and scroll design deliver reliable performance without cutting-edge efficiency. Good value if new efficiency standards aren't required.
Can I install this myself or do I need a contractor? +
Refrigerant handling requires EPA certification and specialized tools in all US states. Professional installation is legally required. Sweat-type valve connections demand soldering experience. Electrical work must meet local codes. Hire a licensed HVAC contractor for proper installation, safety, and warranty validity.

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