2.5 Ton 13 SEER 96% AFUE 40,000 BTU Goodman Gas Furnace and Air Conditioner System - Horizontal Review 2026

// Bottom Line

This Goodman package system works best for homeowners replacing older equipment in modest-sized homes or those prioritizing heating efficiency over cooling performance. The 96% AFUE furnace is the standout feature, while the 13 SEER air conditioner offers respectable cooling without premium pricing.

Review

Goodman's 2.5-ton horizontal package system lands squarely in the practical middle of the HVAC market. This combination furnace and air conditioner targets homeowners who need dependable heating and cooling without paying for premium variable-speed components. At this price point, the system delivers core functionality that contractors have trusted for years. The horizontal A-coil configuration suits tight attic spaces or crawlspaces where vertical installation isn't feasible.

The furnace shines with its 96% AFUE rating, meaning 96 cents of every heating dollar converts to useful heat. Cooling performance sits at 13 SEER, meeting current DOE standards for 2.5-ton units but lacking the efficiency of 16+ SEER models. The furnace produces 40,000 BTU of heat while the air conditioner delivers 30,000 BTU of cooling capacity. Single-stage operation means the system runs at full capacity whenever called, without modulation for partial loads or increased comfort.

Pros & Cons

Pros

Exceptional 96% AFUE furnace efficiency reduces heating costs significantly compared to 80-92% alternatives
13 SEER cooling meets current minimum federal standards for 2.5-ton units
Multi-speed blower motor allows customized airflow and quieter operation modes
40,000 BTU heating and 30,000 BTU cooling handle most single-family homes adequately
10-year warranty with online registration provides solid long-term protection coverage

Cons

Single-stage compressor and burner lack modulation for peak efficiency and comfort
73 dB noise level is louder than variable-speed competitors, noticeable during operation
Not Energy Star certified, missing qualification for some utility rebates and incentives

Who Should Buy

Best For

Homeowners in moderate climates seeking a straightforward furnace and AC replacement without fancy features or premium costs. This system suits those who heat more than they cool and want reliable equipment backed by strong warranty support.

Consider Alternatives If

Buyers in hot climates prioritizing cooling efficiency, those wanting variable-speed quiet operation, or anyone qualifying for Energy Star rebates should explore competing options.

2.5 Ton 13 SEER 96% AFUE 40,000 BTU Goodman Gas Fu

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Installation

Installation requires standard 115V single-phase 60Hz power with breaker protection between 16.7 and 25 amps. The unit measures 34.5 inches tall, 17.5 inches wide, and 28.75 inches deep, fitting standard horizontal return plenums. Suction line insulation is 3/4 inch thick with 50 feet of line included. Plastic or PVC exhaust flue venting on the right side accommodates modern condensing furnace design.

Warranty & Reliability

Goodman provides a solid 10-year parts warranty when you register the system online after installation. This coverage protects against compressor failure, heat exchanger defects, and component breakdowns. Registration is straightforward and unlocks the full warranty period. Labor coverage depends on your contractor or service plan, so clarify those details separately.

Specifications

SKU	LS38343850
Brand/Manufacturer	Online Supply
Cooling BTU	30,000
Heating BTU	40,000
Refrigerant	R410A or R22
Electrical	115 V. 1 Phase 60 Hz
Warranty	10 Years with Online Registration
Decibel Level (dBA)	73
Weight (in lbs)	22.000000
Feature	Spec
Energy Star	No
SEER1 (Efficiency)	13
Condenser Stages	Single Stage
Compressor Type	Reciprocating
Liquid Line	3/8"
Suction Line	3/4"
Liquid Valve Size	3/8"
Max Breaker Size	25 amps
Min. Breaker Size	16.7 amps
Tonnage	2.5 Ton
Valve Type	Sweat
Height	34.5"
Width	17.5"
Depth	28.75"
Resources	Goodman Brochure Goodman Installation Instructions Goodman Parts Manual Goodman Service Manual Goodman Specifications Goodman Technical Information Goodman User Information Goodman Warranty You will need AdobeÂ® AcrobatÂ® 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
Style	A-Coil
Airflow Direction	Upflow/Horizontal
Exhaust Flue Requirement	Plastic / PVC
Furnace Efficiency / AFUE	96%
Blower Motor	Multi Speed
Maximum CFM	800
Flue Location	Right
Burner Stages	Single
Fuel Type	Gas
Suction Line Insulation Thickness	3/4"
Length	50 feet

Frequently Asked Questions

What makes the 96% AFUE rating significant? +

AFUE measures heating efficiency as a percentage. At 96%, this furnace converts nearly all fuel to heat compared to older units at 80% or 90%. Over a heating season, this translates to tangible savings on gas bills, especially in cold climates. The remaining 4% escapes through the exhaust flue, which is condensing technology at work.

Can this system handle a larger home? +

The 2.5-ton capacity suits homes around 2,500-3,000 square feet depending on insulation and climate. Undersizing creates inadequate heating or cooling, while oversizing wastes energy. Have a load calculation performed before purchase to confirm tonnage matches your specific home.

Why is 13 SEER considered adequate? +

The DOE currently requires minimum 13-14 SEER for new systems in most regions. Units at 16 SEER or higher cost significantly more but recover costs slowly in mild climates. For moderate cooling needs, 13 SEER delivers acceptable performance without premium pricing. Heavy cooling climates benefit more from higher SEER investments.

How does this compare to higher-end Goodman models? +

Upgraded Goodman systems add variable-speed compressors and multi-stage burners for quieter operation and better part-load efficiency. Those cost 30-50% more but deliver marginal comfort gains for most homeowners. This unit provides sensible baseline performance for cost-conscious buyers.

Is online registration required for warranty coverage? +

Yes, registration activates the full 10-year warranty. Without it, coverage defaults to a shorter period. Registration takes minutes through Goodman's website using your model and serial number.

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