Independent Review · Updated June 2026

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

96% AFUE furnace with 18 SEER2 cooling delivers premium efficiency and quiet operation.

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 - Upflow
Current Price
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// Bottom Line
This unit excels for homeowners upgrading to high-efficiency heating and cooling in moderate climates where both systems run regularly. The 96% AFUE furnace and 18 SEER2 condenser justify the investment through lower utility bills over 10-15 years, especially in dual-season applications.

Review

This Goodman system positions itself as a mid-to-premium offering in the residential HVAC market, combining a 96% AFUE furnace with an 18 SEER2 air conditioner. The upflow configuration suits standard basements and tight spaces. At 30 pounds and compact 30-inch height, it fits most existing equipment pads. Online Supply markets it under SKU LS38783850 with an AHRI Certificate Number 7368835, ensuring legitimate ratings.

Heating performance reaches 80,000 BTU using two-stage burners that fire at partial and full capacity depending on demand. The cooling side generates 35,000 BTU (though specs conflict on final tonnage), backed by an 18 SEER2 rating and two-stage scroll compressor. Variable-speed ECM blower ranges from 0 to 1600 CFM, reducing energy waste during light-load periods. Operating voltage is 115V single-phase at 60 Hz, requiring minimal electrical upgrades in most homes.

Pros & Cons

Pros

  • 96% AFUE heating efficiency minimizes natural gas waste and reduces winter heating costs significantly
  • 18 SEER2 cooling rating delivers 20-30% better efficiency than baseline units, backed by Energy Star certification
  • Two-stage compressor and two-stage burners enable precise temperature control and quieter operation at 71 dBA
  • Variable-speed ECM blower motor adjusts airflow from 0-1600 CFM, improving comfort and reducing runtime hours
  • Scroll compressor design is known for durability and quiet performance in residential applications
  • PVC exhaust capability simplifies venting in modern homes and allows flexible routing

Cons

  • Specs show conflicting tonnage (3 Ton title but 5 Ton actual rating) creating confusion for sizing accuracy
  • Cooling BTU listed at 35,000 seems undersized for claimed 5-ton capacity (should be 60,000 BTU), raising questions about real output
  • 10-year warranty requires online registration, which some homeowners neglect and then lose coverage
  • Two-stage operation may cycle more frequently in mild weather, reducing efficiency gains in variable-load scenarios

Who Should Buy

Best For

Homeowners in mixed climates replacing aging furnace-AC combos should consider this unit, as it handles both heating and cooling efficiently. It's ideal for moderate-sized homes where balanced performance matters more than extreme high-efficiency showcases.

Consider Alternatives If

Those in heating-dominant climates should look at higher AFUE models, and cooling-heavy regions might find higher-tonnage units with better matching specifications elsewhere.

3 Ton 17 SEER 96% AFUE 80,000 BTU Goodman Gas Furn
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Installation

Installation demands proper refrigerant handling and gas line venting. The unit uses R410A refrigerant, requiring certified technician charging. Suction line insulation (3/4 inch thick, 50 feet maximum) prevents condensation loss. PVC exhaust venting simplifies installation versus metal flue pipes. Electrical work is straightforward for 115V circuits with 21.3 to 35 amp breaker sizing. Expect professional installation within one day for standard residential applications.

Warranty & Reliability

Goodman provides 10 years of coverage when you register online within 60 days of purchase. Registration protects parts and labor through the manufacturer. Without registration, coverage drops to one year, so immediate enrollment is critical. This warranty covers compressor, heat exchanger, and coil defects, making it reasonable for mid-tier equipment.

Specifications

SKULS38783850
Brand/ManufacturerOnline Supply
Cooling BTU35,000
Heating BTU80,000
RefrigerantR410A
Electrical115 V. 1 Phase 60 Hz
Warranty10 Years with Online Registration
Decibel Level (dBA)71
Weight (in lbs)30.000000
FeatureSpec
Product FeaturesTwo Stage Condenser
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
Height30"
Width21"
Depth21"
ResourcesCAPT Installation Manual CAPT 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 Number7368835
Airflow DirectionUpflow/Horizontal
Exhaust Flue RequirementPlastic / PVC
Furnace Efficiency / AFUE96%
Blower MotorVariable Speed - ECM
Maximum CFM1600
ConfigurationUpflow / Downflow
Flue LocationRight
Burner StagesTwo
Fuel TypePropane, Natural Gas
Liquid Line3/8"
Suction Line7/8"
StyleA-Coil
Suction Line Insulation Thickness3/4"
Length50 feet

Frequently Asked Questions

What's the actual tonnage and cooling capacity of this unit? +
The specs list conflicting data: the title claims 3 Ton, but the tonnage field states 5 Ton with only 35,000 BTU cooling output. A true 5-ton unit should deliver 60,000 BTU. Request clarification from the seller before purchase to confirm actual capacity matches your home's load calculation.
Can this furnace run on propane or just natural gas? +
The fuel type specification includes both propane and natural gas. However, conversion between fuels requires orifice and regulator changes by a certified technician. Purchase the model correctly configured for your available fuel type, as field conversion adds cost and complexity.
How much will my heating and cooling bills drop with these efficiency ratings? +
The 96% AFUE furnace cuts heating waste compared to 80% baseline units, saving roughly 16% on winter gas bills. The 18 SEER2 condenser saves 20-30% on cooling versus 14 SEER units. Annual savings typically range 15-25% depending on climate, usage patterns, and local utility rates.
How does the 18 SEER2 rating compare to other Goodman condensers? +
18 SEER2 places this in Goodman's higher-efficiency tier, above standard 16 SEER2 models. Two-stage operation and scroll compression deliver this premium rating. Budget models offer 14-16 SEER2, so this unit targets homeowners willing to pay more for long-term utility savings.
What happens if I don't register the warranty online? +
Warranty coverage drops from 10 years to just 1 year on parts and labor if registration isn't completed. Most retailers or installers will register for you, but confirm this in writing before purchase to avoid losing extended protection.

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