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

// Bottom Line

This Goodman system targets budget-conscious homeowners and contractors who need reliable heating and cooling without premium pricing. It delivers respectable 16 SEER cooling efficiency and 80% AFUE heating, making it solid for moderate climates where both seasons matter.

Review

The Goodman 2.5 ton gas furnace and air conditioner system represents a practical entry point for homeowners balancing budget constraints with seasonal comfort needs. This combo unit pairs an 80,000 BTU furnace with a 29,000 BTU cooling capacity, designed for upflow installation in homes under 2000 square feet. Online Supply prices it at $2053, positioning it competitively against mid-range alternatives. The system earned AHRI certification (204633302) and carries a 10-year warranty, targeting contractors and homeowners who prioritize reliability over luxury features.

Efficiency numbers tell the real story here. The air conditioning side delivers 16 SEER performance, qualifying for ENERGY STAR designation and reducing summer utility costs substantially. The furnace operates at 80% AFUE with two-stage burners, meaning it fires at reduced capacity during mild days and full power when temperatures drop. The variable-speed blower motor runs up to 2000 CFM, optimizing airflow and comfort. However, the scroll compressor employs single-stage operation, cycling completely on and off rather than modulating, which some buyers may perceive as less precise climate control.

Pros & Cons

Pros

16 SEER rating qualifies for ENERGY STAR, reducing long-term cooling costs significantly
80,000 BTU furnace with two-stage burners provides efficient heating without overshooting comfort
Variable-speed blower motor adjusts to 2000 CFM maximum, improving comfort and reducing noise
Competitively priced at $2053 for a complete 2.5 ton system with matched components
10-year warranty with online registration provides solid peace of mind for homeowners
A-coil style with upflow/downflow configuration suits most residential installations

Cons

Single-stage compressor cannot modulate cooling capacity, cycling on and off rather than fine-tuning
80% AFUE is adequate but not outstanding compared to modern 95%+ AFUE alternatives available today
71.5 dB noise level is slightly louder than premium models, noticeable during operation

Who Should Buy

Best For

Homeowners in moderate climates seeking dependable cooling and heating without premium pricing are ideal candidates. Contractors building rental properties or spec homes will appreciate the value proposition and straightforward installation requirements.

Consider Alternatives If

Buyers in cold climates should explore higher AFUE furnaces, and those prioritizing whisper-quiet operation should consider variable-capacity compressor systems.

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

$2053

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Installation

Installation requires standard mechanical skills with HVAC experience. The system accepts both natural gas and propane, accommodates metal exhaust flues, and operates on 120V single-phase 60Hz power with 17.1 to 25 amp breaker requirements. Suction and liquid line sizing use 7/8 inch and 3/8 inch connections respectively, with 50 feet of pre-insulated suction line included. Dimensions of 30 by 21 by 21 inches fit most furnace closets and utility rooms.

Warranty & Reliability

The 10-year parts and compressor warranty requires online registration to activate full coverage. This is standard industry protection that covers defective components and labor at authorized dealers. Registration takes five minutes and extends peace of mind through the first decade of operation. Evaporator coil coverage receives separate Goodman documentation for reference.

Specifications

SKU	LS38783850
Brand/Manufacturer	Online Supply
Cooling BTU	29,000
Heating BTU	80,000
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.
AHRI Certificate Number	204633302
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

How does 16 SEER compare to older air conditioning systems I might replace? +

A 16 SEER unit delivers approximately 40% better cooling efficiency than 10 SEER models from 15 years ago. This translates to roughly $200 to $300 annual savings in cooling costs for average homes. The ENERGY STAR rating confirms it meets EPA efficiency thresholds, qualifying for some utility rebates.

Can this furnace run on propane instead of natural gas? +

Yes, the Goodman supports both propane and natural gas with proper configuration. You'll need a licensed HVAC technician to adjust burner jets and gas valve settings for your fuel type. Ensure your propane supply line meets code requirements before installation begins.

What does the variable-speed blower motor actually do for me? +

The variable-speed blower adjusts fan speed based on heating or cooling demand, running slower during mild weather and faster during extreme temperatures. This reduces noise, improves humidity control, and lowers electricity consumption compared to single-speed motors that run at full capacity constantly.

Is single-stage cooling really worse than variable-stage systems costing more? +

Single-stage compressors cycle fully on and off, which works fine for most climates but may cause temperature swings in mild weather. Variable-capacity models modulate output smoothly and cost 30% to 50% more. For moderate climates, this Goodman handles comfort adequately without premium expenses.

Do I need to register the warranty online right away? +

Registration is required to activate the full 10-year coverage. Most dealers handle this at installation, but verify before signing the final paperwork. Keep your registration confirmation and AHRI certificate for future service calls or warranty claims.

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