2.5 Ton 16 SEER 80% AFUE 100,000 BTU Goodman Gas Furnace and Air Conditioner System - Upflow Review 2026

// Bottom Line

This Goodman system works well for homeowners upgrading from older equipment who want respectable efficiency without premium pricing. The 16 SEER cooling and two-stage heating deliver solid year-round comfort in moderate climates, though the 80% AFUE furnace is middle-of-the-road by today's standards.

Review

The Goodman 2.5 ton combined gas furnace and air conditioner represents a middle-market approach to home climate control. This upflow system pairs a 100,000 BTU furnace with a 29,000 BTU cooling capacity condenser, covering typical single-family homes efficiently without premium pricing. Goodman equipment has earned respect among contractors for reliability, though it typically ranks below Carrier or Lennox in feature sets. Online Supply's availability at competitive pricing makes this an accessible option for homeowners and contractors looking for proven equipment without brand-name markup.

Performance data reveals a balanced, though not cutting-edge, system. The 16 SEER cooling rating meets Energy Star standards and will run substantially quieter than older 10 SEER units at 71.5 dB. The furnace delivers 80% AFUE efficiency, meaning 20 cents of every heating dollar escapes as waste, which lags 90% AFUE competitors. Two-stage burner operation modulates heating output, reducing short cycling. A variable-speed blower motor adjusts CFM up to 2000 based on load, improving comfort during partial-load operation when homes don't need full heating or cooling capacity.

Pros & Cons

Pros

16 SEER rating qualifies for Energy Star certification, reducing cooling costs noticeably
Two-stage burner allows efficient operation during mild heating days, not just full capacity
Variable speed blower motor matches airflow to demand, improving comfort and reducing runtime noise to 71.5 dB
Scroll compressor is proven reliable with lower vibration than reciprocating designs
Standard R410A refrigerant widely available, no technician shortages for service calls

Cons

80% AFUE furnace falls below 90% AFUE models now common, meaning higher winter gas bills long-term
Single-stage cooling compressor runs at full power constantly, less efficient than two-stage alternatives
Spec sheet shows conflicting tonnage data, listing both 2.5 ton and 3.5 ton, creating buyer confusion

Who Should Buy

Best For

Budget-conscious homeowners in moderate climates who want a trustworthy brand without paying for premium efficiency tiers. This system suits those replacing 10+ year old units where the efficiency jump alone justifies the investment.

Consider Alternatives If

Northern homeowners heating heavily in winter should consider 90%+ AFUE models, and those in hot climates needing maximum cooling efficiency should explore 18+ SEER two-stage units.

2.5 Ton 16 SEER 80% AFUE 100,000 BTU Goodman Gas F

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Installation

Installation requires proper line sizing with the included 3/8 inch liquid line and 7/8 inch suction line, both rated to 50 feet with 3/4 inch insulation. Electrical needs 120V single-phase 60Hz service with a 17.1 to 25 amp breaker. The unit accepts propane or natural gas, requiring metal exhaust flue venting. A-coil configuration suits upflow placement in attics or basements. Most contractors complete installation in 4 to 6 hours, though ductwork modifications can extend the timeline.

Warranty & Reliability

Goodman provides a 10-year compressor warranty when you register the system online after installation. Parts coverage typically extends one year from purchase. This mid-range warranty is standard for Goodman's tier, offering solid protection but shorter than Lennox or Carrier's extended options. Keep registration documentation accessible for any future claims to ensure coverage validity.

Specifications

SKU	LS38783850
Brand/Manufacturer	Online Supply
Cooling BTU	29,000
Heating BTU	100,000
Refrigerant	R410A
Electrical	120 V. 1 Phase 60 Hz
Warranty	10 Years with Online Registration
Decibel Level (dBA)	71.5
Weight (in lbs)	30.000000
Feature	Spec
Energy Star	Yes
SEER1 (Efficiency)	16
Condenser Stages	Single Stage
Compressor Type	Scroll
Liquid Valve Size	3/8"
Suction Valve Size	7/8"
Max Breaker Size	25 amps
Min. Breaker Size	17.1 amps
Tonnage	3.5 Ton
Height	30"
Width	21"
Depth	21"
Resources	CAPT Installation Manual CAPT Specifications Sheet Goodman Evaporator Coil Warranty You will need Adobe® Acrobat® Reader to view PDF documents.
Safety Information	PROPOSITION 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.
Airflow Direction	Upflow/Horizontal
Exhaust Flue Requirement	Metal
Furnace Efficiency / AFUE	80%
Blower Motor	Variable Speed
Maximum CFM	2000
Configuration	Upflow / Downflow
Burner Stages	Two
Fuel Type	Propane, Natural Gas
Liquid Line	3/8"
Suction Line	7/8"
Style	A-Coil
Suction Line Insulation Thickness	3/4"
Length	50 feet

Frequently Asked Questions

Why does the spec sheet list both 2.5 ton and 3.5 ton tonnage? +

The product listing contains an error. The title claims 2.5 ton while specs show 3.5 ton. Verify the actual condenser unit tonnage with Online Supply before ordering. This discrepancy suggests data entry mistakes that may affect technical documentation accuracy, making pre-purchase clarification essential.

Is this system compatible with my existing ductwork from a 15-year-old unit? +

Possibly, but professional inspection is mandatory. The system outputs 2000 CFM maximum. If your ducts were undersized for older equipment, upgrade work may be needed to handle proper airflow. Undersized ducts reduce efficiency and comfort significantly, often costing $500 to $1500 to expand.

How much will heating and cooling cost compared to my current system? +

That depends on your current unit's age and efficiency. If replacing a 10 SEER air conditioner, expect 35 to 45 percent cooling savings. If replacing a 60% AFUE furnace, heating bills drop roughly 25 percent. Regional gas and electricity rates heavily influence total cost, so calculate based on your utility rates for accuracy.

Should I choose this or a 18 SEER two-stage unit at higher cost? +

In hot climates with 8+ month cooling seasons, the 18 SEER two-stage pays back within 7 to 10 years through lower cooling bills. In mild climates, 16 SEER typically covers your needs adequately. Two-stage compressors also run quieter and last longer, justifying premium pricing if budget allows.

What does the 10-year warranty actually cover if the unit fails? +

Goodman covers compressor failure and defective parts for 10 years with online registration. Labor costs fall on you unless you purchased an extended service plan separately. One-year parts coverage applies to non-compressor components. Always request full warranty terms before installation.

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