2.5 Ton 14 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 in moderate climates who need dependable heating and cooling without premium pricing. The 80% AFUE furnace pairs solid 14 SEER cooling efficiency with two-stage heating, making it ideal for contractors installing complete systems in residential homes up to 2,500 square feet.

Review

The Goodman 2.5 Ton system occupies solid middle ground in the residential HVAC market. This upflow-configured combination pairs an 80% AFUE furnace rated at 100,000 BTU input with a 2.5 ton air conditioner delivering 30,000 BTU cooling capacity. At the $0 listed price, the value proposition hinges on actual installed costs, but the equipment itself represents mainstream contractor-grade equipment built for reliable performance in typical residential applications without cutting corners.

Efficiency metrics tell a straightforward story. The 14 SEER cooling rating meets modern standards for solid AC performance, while the 80% AFUE furnace hits the baseline for non-condensing gas furnaces. Two-stage burner operation means the furnace runs at reduced capacity during mild weather, reducing energy waste from oversized heating. The high-efficiency multi-speed blower motor adjusts to match heating and cooling demands, delivering maximum CFM of 2,000 and operating at a moderate 72 dB.

Pros & Cons

Pros

14 SEER cooling efficiency delivers good year-round energy savings on the AC side
Two-stage burner reduces short cycling and provides more consistent heating comfort
High-efficiency multi-speed blower motor adjusts automatically for quieter operation and better air distribution
Upflow configuration works in standard basement installations with flexible ductwork
10-year warranty with online registration covers parts and compressor, providing solid peace of mind

Cons

80% AFUE is industry standard but not high-efficiency, missing the 90%+ AFUE of condensing models
Single-stage condenser limits cooling modulation, less precise temperature control than two-stage systems
72 dB noise level is moderate, noticeable during operation compared to variable-speed units
Requires metal exhaust flue, limiting installation options in some retrofit applications

Who Should Buy

Best For

Contractors and homeowners in mixed climates seeking a budget-conscious complete system that balances heating and cooling needs without premium features. This works particularly well for homes where energy efficiency matters but the budget doesn't stretch to high-efficiency condensing furnaces or dual-stage cooling.

Consider Alternatives If

Anyone in severe cold climates should look at 90%+ AFUE condensing furnaces, and homeowners prioritizing ultra-quiet operation should consider variable-speed compressor systems.

2.5 Ton 14 SEER 80% AFUE 100,000 BTU Goodman Gas F

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Installation

Installation requires standard commercial electrical service (208/230V single phase, 60 Hz) with breaker capacity between 17.1 and 25 amps. The upflow configuration fits typical basement installations with standard return and supply ductwork. Metal exhaust flue is mandatory, which may require modifications in homes with PVC vent systems. Suction and liquid lines arrive pre-sized at 3/4 inch and 3/8 inch respectively, with 50 feet of included insulation simplifying the refrigerant line run.

Warranty & Reliability

Online Supply backs this unit with a standard 10-year parts and compressor warranty activated through online registration. This duration covers typical equipment lifespan through the critical early failure window. However, you'll need to complete registration promptly after installation to validate coverage. The warranty protects against manufacturing defects but excludes installation errors and maintenance-related failures.

Specifications

SKU	LS38343850
Brand/Manufacturer	Online Supply
Cooling BTU	30,000
Heating BTU	100,000
Refrigerant	R410A
Electrical	208 / 230 V. 1 Phase 60 Hz
Warranty	10 Years with Online Registration
Decibel Level (dBA)	72
Weight (in lbs)	22.000000
Feature	Spec
Airflow Direction	Upflow/Horizontal
Exhaust Flue Requirement	Metal
Furnace Efficiency / AFUE	80%
Blower Motor	High Efficiency Multi-Speed
Maximum CFM	2000
Configuration	Upflow / Downflow
Burner Stages	Two
Fuel Type	Gas
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.
Energy Star	No
SEER1 (Efficiency)	14
Condenser Stages	Single Stage
Compressor Type	Rotary
Liquid Valve Size	3/8"
Suction Valve Size	3/4"
Max Breaker Size	25 amps
Min. Breaker Size	17.1 amps
Tonnage	3.5 Ton
Liquid Line	3/8"
Suction Line	3/4"
Style	A-Coil
Suction Line Insulation Thickness	3/4"
Length	50 feet

Frequently Asked Questions

How does 80% AFUE compare to newer high-efficiency furnaces? +

80% AFUE is standard for non-condensing furnaces, meaning 20% of fuel energy exits through the flue. Condensing furnaces reach 90-98% AFUE by recovering that heat. You'll pay more upfront for condensing models but recover costs through lower heating bills over 15-20 years in cold climates. For moderate climates, the payback extends beyond typical equipment life.

Will this system fit in my basement installation? +

The upflow configuration with 30-inch height and 21-inch width fits standard basement furnace closets. However, verify your exhaust flue can use rigid metal pipe. The 50-foot suction line insulation included helps with longer refrigerant runs, but check local codes for maximum acceptable line length in your jurisdiction.

What makes the two-stage burner different from single-stage? +

Two-stage burners run at reduced capacity (roughly 60-65% of maximum) during mild weather, minimizing cycling and improving comfort. This reduces temperature swings and saves energy during shoulder seasons. Single-stage burners run full strength or off, creating more noticeable temperature fluctuations and lower seasonal efficiency despite similar AFUE ratings.

How does this system compare to higher-SEER air conditioners? +

14 SEER is solid middle performance. 16-18 SEER units cost 20-30% more but reduce summer cooling costs by 10-15%. The choice depends on your climate, electricity rates, and how long you'll own the home. In moderate climates, 14 SEER delivers acceptable efficiency. Hot, humid climates benefit more from higher ratings.

Do I need to register the warranty immediately after installation? +

Yes, the 10-year warranty requires online registration to activate. Contractors should complete this before the customer takes possession. Missing registration forfeits warranty coverage entirely, so confirm it's completed as a final installation step.

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