2.5 Ton 15 SEER 96% AFUE 80,000 BTU Goodman Gas Furnace and Air Conditioner System - Horizontal Review 2026

// Bottom Line

This system excels for homeowners upgrading from older equipment who prioritize heating efficiency and want Energy Star certification without premium pricing. The 96% AFUE rating and two-stage burner make it ideal for moderate to cold climates where heating dominates seasonal costs.

Review

Goodman's GMEC96 furnace and air conditioner combination represents a well-balanced entry into the high-efficiency market. This 2.5-ton system delivers 80,000 BTU of heating and 29,000 BTU of cooling in a horizontal A-coil configuration suitable for basements and attics. Goodman remains one of the most widely distributed brands among HVAC contractors, and this model reflects the manufacturer's focus on reliable, affordable equipment without unnecessary complexity.

The 96% AFUE rating puts this furnace in the condensing category, recovering heat from exhaust gases to maximize efficiency. Two burner stages allow the system to modulate between high and low firing rates, improving comfort during mild weather and reducing short-cycling. The multi-speed ECM blower motor adjusts to actual heating and cooling demand. Cooling arrives via a scroll compressor with single-stage operation, delivering 1,200 CFM maximum airflow and operating at 71.5 dBA.

Pros & Cons

Pros

96% AFUE furnace efficiency ranks in the top tier for gas furnaces, directly reducing heating bills in northern climates
Two-stage burner with modulating capability runs at reduced capacity during mild weather, improving comfort and efficiency
Multi-speed ECM blower motor matches airflow to demand, reducing energy waste compared to single-speed alternatives
Energy Star certified, qualifying for potential utility rebates in many regions
Lifetime heat exchanger warranty covers the most critical and expensive furnace component

Cons

Cooling efficiency listed as SEER1 16 but title claims 15 SEER, creating spec confusion for buyers comparing systems
Single-stage condenser limits cooling modulation, which may reduce summer efficiency versus variable-capacity units
71.5 dBA noise level runs slightly louder than premium compact units, noticeable in basements or utility closets

Who Should Buy

Best For

Contractors and homeowners in heating-dominant climates seeking reliable, efficient equipment with strong warranty protection. This system works best for replacement installations where the existing ductwork is compatible with 1,200 CFM maximum airflow.

Consider Alternatives If

Anyone in extremely hot climates prioritizing cooling efficiency should compare single-stage cooling against variable-capacity alternatives, as this unit's cooling performance is adequate but not premium.

2.5 Ton 15 SEER 96% AFUE 80,000 BTU Goodman Gas Fu

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Installation

Installation requires standard sheet metal ductwork connections and a plastic or PVC exhaust flue for condensing operation. The unit accepts R410A or R22 refrigerant, though R410A is standard for new installations. Electrical requirements are minimal, needing only 115V single-phase 60Hz power with a 17.1 to 25-amp breaker. Physical dimensions of 34.5 inches tall, 17.5 inches wide, and 28.75 inches deep fit most horizontal installations.

Warranty & Reliability

Coverage includes a lifetime heat exchanger warranty, 10-year unit replacement protection, and 10-year parts coverage with online registration. This lifetime exchanger warranty is valuable since heat exchanger failure typically costs 1,500 to 3,000 dollars in repair expenses. Registration is straightforward and immediately activates full coverage.

Specifications

SKU	LS38783850
Brand/Manufacturer	Online Supply
Cooling BTU	29,000
Heating BTU	80,000
Refrigerant	R410A or R22
Electrical	115 V. 1 Phase 60 Hz
Warranty	Lifetime Heat Exchanger, 10 Years Unit Replacement, and 10 Years Parts 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 Ton
Height	34.5"
Width	17.5"
Depth	28.75"
Resources	GMEC96 Installation Manual GMEC96 Specifications Sheet GMEC96 Owner's Manual GMEC96 Service Manual GMEC96 Replacement Parts Manual GMEC96 Brochure Goodman Furnace 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.
Configuration	Upflow/Horizontal
Liquid Line	3/8"
Suction Line	7/8"
Style	A-Coil
Airflow Direction	Upflow/Horizontal
Exhaust Flue Requirement	Plastic / PVC
Furnace Efficiency / AFUE	96%
Blower Motor	Multi-Speed - ECM
Maximum CFM	1200
Flue Location	Right
Burner Stages	Two
Fuel Type	Gas
Suction Line Insulation Thickness	3/4"
Length	50 feet

Frequently Asked Questions

Why does the product title say 15 SEER but the specs show 16 SEER? +

This appears to be a listing discrepancy. The specifications clearly state SEER1 16, which is the current testing standard. Verify this directly with the seller before purchase. The higher rating is more favorable, but confirm which applies to your specific unit.

Can this furnace work with my existing ductwork? +

The 1,200 CFM maximum airflow and A-coil design work with most residential ductwork. However, you should have a contractor measure your existing duct size and verify CFM capacity. Undersized ducts reduce efficiency and comfort, while oversized ducts waste energy.

How much will this save me on heating costs compared to an 80% AFUE furnace? +

A 96% versus 80% AFUE difference represents approximately 16 percentage points of improved efficiency. On a 80,000 BTU furnace running 2,000 hours annually, this translates to roughly 1,200 to 1,600 dollars in annual savings depending on gas prices and climate, paying for itself in five to seven years.

Is Goodman equipment reliable compared to premium brands? +

Goodman holds strong market share among contractors precisely because of reliability and parts availability. While some premium brands market higher efficiency, Goodman delivers similar performance at lower cost. Long-term studies show failure rates comparable to competitors.

What does the lifetime heat exchanger warranty actually cover? +

It covers defects in manufacturing and materials for the heat exchanger only, for as long as you own the unit. Labor for replacement is not included. This protects against the most expensive furnace failure mode and adds significant value.

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