Independent Review · Updated June 2026

3 Ton 16 SEER 97% AFUE 100,000 BTU Goodman Gas Furnace and Air Conditioner System - Upflow

High-efficiency Goodman combo system delivers 97% heating and 16 SEER cooling.

8.2
IndustrialRank Score
Efficiency
8.5
Reliability
7.8
Value
8.0
Installation
8.5
Warranty
8.0
3 Ton 16 SEER 97% AFUE 100,000 BTU Goodman Gas Furnace and Air Conditioner System - Upflow
Current Price
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// Bottom Line
This system is ideal for homeowners replacing older equipment who want solid efficiency without premium pricing. The 97% AFUE furnace and 16 SEER condenser make it a smart choice for moderate climates where heating and cooling loads are balanced.

Review

Goodman's 3-ton gas furnace and air conditioning system represents the sweet spot for many residential replacements. This upflow A-coil configuration ships as a matched pair, simplifying both ordering and system optimization. The brand's reputation for durability makes it a contractor favorite, while the Energy Star certification appeals to cost-conscious homeowners. Online Supply positions this unit competitively in the mid-tier market where quality and affordability balance.

The 97% AFUE furnace with modulating burners delivers efficient heating through 100,000 BTU output, while the air conditioner pulls 34,800 BTU cooling capacity at 16 SEER efficiency. The variable-speed ECM blower adjusts airflow up to 2000 CFM based on demand, reducing electricity waste during partial-load operation. R410A refrigerant meets current environmental standards. Electrical requirements are reasonable at 115V single-phase with 18.7 to 30 amp breaker sizing.

Pros & Cons

Pros

  • 97% AFUE furnace efficiency significantly reduces heating costs compared to 80-90% units
  • 16 SEER cooling efficiency qualifies for Energy Star and various utility rebates
  • Modulating burner and variable-speed ECM blower optimize performance across different heating demands
  • 100,000 BTU heating capacity handles most residential needs without oversizing
  • A-coil configuration works in upflow or horizontal installations for flexible placement

Cons

  • Single-stage compressor means cooling cycles on and off rather than modulating for quieter operation
  • 73.5 dB noise level is moderately loud, noticeable during operation in quiet spaces
  • Spec inconsistency shows both 3-ton and 5-ton ratings, creating confusion about actual capacity

Who Should Buy

Best For

Homeowners in mixed-climate zones replacing 15+ year old systems who want proven Goodman reliability at competitive pricing. This combination works well for houses where heating and cooling demands are roughly equal throughout the year.

Consider Alternatives If

Buyers in extremely hot climates seeking maximum cooling should consider higher-tonnage units, and noise-sensitive homeowners would benefit from dual-stage or modulating compressors.

3 Ton 16 SEER 97% AFUE 100,000 BTU Goodman Gas Fur
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Installation

This upflow A-coil system requires standard ductwork modifications and proper line sizing. The 3/8-inch liquid and 7/8-inch suction lines come with 3/4-inch insulation included. Flue exhaust requires plastic or PVC venting to the right side. Most residential installations take 4 to 6 hours for experienced technicians. Proper refrigerant charging and airflow verification are critical for achieving rated efficiency.

Warranty & Reliability

The 10-year parts warranty requires online registration within a specified timeframe after installation. This is stronger than many budget-tier competitors offering 5 years. Coverage typically includes compressor, heat exchanger, and sealed components. Verify registration deadlines and coverage exclusions with your installer to protect your investment.

Specifications

SKULS38783850
Brand/ManufacturerOnline Supply
Cooling BTU34,800
Heating BTU100,000
RefrigerantR410A
Electrical115 V. 1 Phase 60 Hz
Warranty10 Years with Online Registration
Decibel Level (dBA)73.5
Weight (in lbs)30.000000
FeatureSpec
Energy StarYes
SEER1 (Efficiency)16
Condenser StagesSingle Stage
Compressor TypeScroll
Liquid Valve Size3/8"
Suction Valve Size7/8"
Max Breaker Size30 amps
Min. Breaker Size18.7 amps
Tonnage5 Ton
Height34.5"
Width21"
Depth28.75"
ResourcesGoodman Brochure Goodman Specifications 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.
ConfigurationUpflow/Horizontal
Liquid Line3/8"
Suction Line7/8"
StyleA-Coil
AHRI Certificate Number7424267
Airflow DirectionUpflow/Horizontal
Exhaust Flue RequirementPlastic / PVC
Product FeaturesRebate Available
Furnace Efficiency / AFUE97%
Blower MotorVariable Speed - ECM
Maximum CFM2000
Flue LocationRight
Burner StagesModulating
Fuel TypePropane, Natural Gas
Suction Line Insulation Thickness3/4"
Length50 feet

Frequently Asked Questions

What's the actual tonnage, 3 or 5 tons? +
The specifications show conflicting information, 3 tons in the title and 5 tons in the specs table. Based on 34,800 cooling BTU, this is closer to 3-ton capacity. Contact Online Supply or request the AHRI certificate 7424267 to clarify before purchasing.
Can this system fit in a tight attic space? +
At 34.5 inches tall, 21 inches wide, and 28.75 inches deep, the furnace is moderately sized. Upflow configuration works in attics if height clearance exists. The suction line extends to 50 feet, allowing flexible placement away from the condenser unit.
How much money will I save with 97% AFUE compared to older units? +
If replacing an 80% AFUE system, expect 17% heating cost reduction over the equipment's 15 to 20 year lifespan. A 90% unit saves about 7% annually. Actual savings depend on natural gas rates in your area and thermostat settings.
Is 16 SEER worth the cost over 14 SEER alternatives? +
At 16 SEER versus 14 SEER, you're reducing cooling costs by roughly 12-15% over the unit's life. The difference matters most in hot climates with high cooling hours. In mixed climates, payback takes 8 to 12 years depending on electricity rates.
What does the 10-year warranty actually cover? +
Parts coverage includes sealed components and the compressor. Labor is typically not covered. Warranty requires timely registration and proper installation by licensed technicians. Check the fine print for exclusions related to refrigerant, electrical work, or improper sizing.

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