Independent Review · Updated June 2026

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

High-efficiency Goodman system at an aggressive price point for budget-conscious contractors

7.1
IndustrialRank Score
Efficiency
8.5
Reliability
7.0
Value
8.2
Installation
7.8
Warranty
7.5
3 Ton 17 SEER 96% AFUE 80,000 BTU Goodman Gas Furnace and Air Conditioner System - Upflow
Current Price
$89
Check Price at HVACDirect → Shop Now at HVACDirect
Authorized dealer · Full manufacturer warranty
// Bottom Line
This system targets budget-focused contractors and homeowners willing to trade brand recognition for efficiency ratings and low upfront costs. The 96% AFUE furnace and 18 SEER2 cooling make it a solid performer for northern climates where heating dominates the load. At $89, the value proposition is compelling if you can handle the Online Supply brand positioning.

Review

Goodman continues to deliver value-oriented HVAC solutions, and this 3-ton upflow configuration targets contractors and homeowners seeking efficiency without premium pricing. The system combines an 80,000 BTU furnace with a matching air conditioning unit, packaged in a compact 30-inch height suitable for most basement and closet installations. Online Supply's distribution model keeps costs low, though brand familiarity remains lower than traditional OEMs. The SKU LS38783850 appears designed for the replacement and new construction markets where budget constraints are significant.

Performance metrics are genuinely strong for the price. The furnace delivers 96% AFUE efficiency with two-stage burners, meaning minimal fuel waste during heating season. The cooling side provides 18 SEER2 efficiency through a two-stage condenser and scroll compressor, pulling 35,000 BTU at full capacity. The variable-speed ECM blower motor runs quietly at 71 dBA while delivering up to 1,600 CFM. Energy Star certification confirms efficiency credentials. For contractors in northern markets where heating BTU matters most, the 80,000 heating output paired with 96% AFUE delivers excellent operating cost performance.

Pros & Cons

Pros

  • 96% AFUE furnace efficiency with two-stage burners minimizes heating waste in cold climates
  • 18 SEER2 cooling efficiency and scroll compressor deliver solid AC performance for the price tier
  • Variable-speed ECM blower motor provides better comfort control and quiet operation at 71 dBA
  • Two-stage condenser allows modulated cooling for improved efficiency during partial-load conditions
  • 10-year warranty with online registration provides reasonable coverage for residential applications
  • Energy Star certified system reduces operating costs over time

Cons

  • Spec sheet shows conflicting tonnage data, listing both 3 ton and 5 ton which raises manufacturing clarity concerns
  • Online Supply branding lacks the market recognition and dealer support network of major manufacturers
  • Limited documentation available, requires Adobe Reader for installation manuals which may slow contractor setup
  • Cooling BTU specification at 35,000 seems undersized for marketed 3-ton capacity, creating potential oversizing issues

Who Should Buy

Best For

This system works best for contractors building rental properties or flipping homes where upfront cost matters more than brand prestige. Homeowners in heating-dominant climates (northern U.S., Canada) who prioritize furnace efficiency and can accept an unfamiliar brand will see good long-term value.

Consider Alternatives If

Homeowners wanting factory-direct support, established dealer networks, or premium brand recognition should look at Carrier, Lennox, or Trane instead.

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

Installation

Installation requires 208/230V single-phase 60Hz power with breaker sizing between 21.3 and 35 amps. The upflow/horizontal configuration accommodates both orientations, and the right-side flue location accepts plastic PVC exhaust piping, simplifying ductwork integration. Refrigerant lines use standard 3/8-inch and 7/8-inch connections with sweat valves. Installation documentation is PDF-based, requiring Adobe Reader. Contractors should verify local utility requirements before proceeding, as dual-fuel capability (propane and natural gas) affects burner setup.

Warranty & Reliability

Goodman provides a standard 10-year parts and labor warranty with online registration. This coverage is competitive for the price tier and protects against compressor failure, heat exchanger problems, and component defects. The warranty does not cover refrigerant charges or routine maintenance. Registration documentation must be completed at installation to activate coverage. For homeowners planning to stay long-term, this warranty provides reasonable peace of mind.

Specifications

SKULS38783850
Brand/ManufacturerOnline Supply
Cooling BTU35,000
Heating BTU80,000
RefrigerantR410A or R22
Electrical208 / 230 V. 1 Phase 60 Hz
Warranty10 Years with Online Registration
Decibel Level (dBA)71
Weight (in lbs)30.000000
FeatureSpec
AHRI Certificate Number7368835
Airflow DirectionUpflow/Horizontal
Exhaust Flue RequirementPlastic / PVC
Furnace Efficiency / AFUE96%
Blower MotorVariable Speed - ECM
Maximum CFM1600
ConfigurationUpflow / Downflow
Flue LocationRight
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.
Product FeaturesTwo Stage Condenser
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
Liquid Line3/8"
Suction Line7/8"
StyleA-Coil
Suction Line Insulation Thickness3/4"
Length50 feet

Frequently Asked Questions

Does this system work with existing ductwork designed for 3-ton equipment? +
The 1,600 CFM maximum airflow at 3-ton sizing is appropriate for standard residential ductwork. However, the spec sheet conflicting tonnage data (3-ton vs 5-ton) requires clarification with Online Supply before installation. Request AHRI certificate 7368835 documentation confirming actual tonnage matching your ductwork design.
Can I switch between natural gas and propane after installation? +
Yes, the system supports both fuels, but requires different burner orifice sizing and controls calibration. Professional HVAC technicians must handle the conversion, adjusting air/fuel mixing on the two-stage burners. Improper conversion risks safety issues and warranty voiding. Plan for service technician involvement.
How does 96% AFUE furnace efficiency translate to monthly heating bills? +
At 96% AFUE, approximately 96 cents of every fuel dollar becomes heat, with only 4 cents lost. Compared to 80% AFUE equipment, this saves roughly 16% on heating costs annually. In cold climates burning $1,200 annual heating fuel, expect savings around $190 yearly, justifying the higher upfront investment.
How does this Online Supply system compare to Goodman brand direct models? +
Online Supply appears to be a Goodman distributor product using similar core components and efficiency ratings. The main differences are brand support infrastructure and dealer availability. Specifications match Goodman's lineup, but direct factory support may be limited through Online Supply channels.
Is the 10-year warranty transferable if I sell my home? +
Most Goodman warranties transfer to secondary owners with proof of installation and registration documentation. Verify transfer terms with Online Supply directly, as distributor programs sometimes impose restrictions on warranty portability that differ from Goodman's standard policies.

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