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

// Bottom Line

This Goodman system excels for homeowners upgrading cramped attic or crawlspace installations where horizontal configuration is mandatory. The 96% AFUE furnace and 16 SEER condenser deliver measurable utility savings, though the 3.5 ton capacity exceeds the stated 2.5 ton title, creating potential oversizing concerns.

Review

This Goodman combination system represents a solid middle-tier choice for HVAC replacement in challenging installation spaces. The horizontal configuration addresses a genuine market need for homeowners and contractors dealing with attic or crawlspace constraints where traditional upright furnaces and condenser units simply won't fit. Goodman's reputation for no-frills reliability makes this an accessible option for budget-conscious upgrades, though the spec sheet inconsistency between the 2.5 ton title and 3.5 ton actual capacity warrants clarification before purchase.

Performance numbers tell a compelling efficiency story. The furnace delivers 80,000 BTU heating output at 96% AFUE, substantially above the 80 percent federal minimum and competitive with premium alternatives. Cooling capacity reaches 29,000 BTU at 16 SEER, beating the stated 15 SEER specification. The variable speed ECM blower motor with 1,600 CFM maximum capacity cycles intelligently during partial load conditions, reducing wasted energy. Energy Star certification validates these efficiency claims for homeowners seeking documented utility bill reductions.

Pros & Cons

Pros

96% AFUE furnace efficiency reduces heating costs substantially compared to 80% baseline units
16 SEER condenser rating significantly outperforms the 15 SEER title specification
Variable speed ECM blower motor optimizes airflow and reduces runtime energy consumption
Horizontal A-coil configuration fits tight attic and crawlspace installations other systems cannot reach
Two-stage burner provides modulating heat for improved comfort and efficiency during mild weather
Energy Star certified with 10 year warranty when registered online

Cons

Spec sheet lists 3.5 ton cooling capacity, contradicting the 2.5 ton product title, creating sizing confusion
71.5 dB noise level registers as moderately loud for basement or utility room placement
Requires plastic PVC exhaust flue, limiting installation flexibility in older homes with masonry vents
Scroll compressor single-stage design offers no variable capacity modulation during light cooling loads

Who Should Buy

Best For

Homeowners replacing failed furnace-condenser systems in attics or crawlspaces where standard vertical configuration won't fit. Contractors managing retrofits in tight mechanical spaces value the horizontal design and dual-fuel capability for propane or natural gas homes.

Consider Alternatives If

Buyers seeking variable-capacity cooling should explore two-stage compressor options, and those needing quieter operation under 70 dB should evaluate alternative models.

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

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Installation

Horizontal downflow configuration requires careful ductwork planning to prevent condensation and ensure proper refrigerant return flow. The 3.5 ton system demands 115V single-phase 60Hz electrical service with 17.1 to 25 amp breaker sizing, standard in most homes. Plastic PVC exhaust venting is mandatory and non-negotiable, complicating retrofits in homes with existing metal flue systems. Professional installation remains highly recommended for proper line insulation and airflow verification.

Warranty & Reliability

Goodman provides 10 year parts and compressor coverage upon online registration, which is competitive within this equipment class. This extended protection covers compressor failure and major component breakdown, standard industry practice. However, labor costs for repairs fall entirely on the homeowner, so factor service call expenses into long-term ownership calculations. Registration is simple but mandatory to activate 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	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	21"
Width	21.125"
Depth	26"
Resources	CHPF Installation Manual CHPF 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	7368843
Airflow Direction	Downflow/Horizontal
Exhaust Flue Requirement	Plastic / PVC
Product Features	Rebate Available
Furnace Efficiency / AFUE	96%
Blower Motor	Variable Speed - ECM
Maximum CFM	1600
Configuration	Horizontal
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 product title say 2.5 ton but specs show 3.5 ton cooling capacity? +

This appears to be a listing error on the supplier's part. The actual condenser specifications clearly indicate 3.5 ton tonnage with 29,000 BTU cooling output. Verify capacity before purchase to ensure your ductwork and indoor equipment match actual system size, not the misleading title.

Can this horizontal unit be installed in any attic orientation? +

Yes, the horizontal A-coil design fits standard attic spaces with downflow configuration. However, ensure adequate clearance above the unit for maintenance access, proper ductwork slope for condensation drainage, and PVC flue termination through the roof with appropriate weather sealing.

How does the 96% AFUE compare to older furnaces in real heating costs? +

A 96% AFUE furnace converts 96 cents of every fuel dollar into usable heat. Upgrading from an 80% furnace saves roughly 17 percent on heating costs annually. Actual savings depend on climate, usage patterns, and fuel prices, but expect payback within 5 to 8 years for many homeowners.

Is the 16 SEER condenser significantly better than standard 14 SEER units? +

Yes. SEER improvements between 14 and 16 represent approximately 12 percent better cooling efficiency under rated conditions. This translates to measurable summer utility savings, especially in hot climates where air conditioning runtime extends beyond 2,000 hours annually.

Does the 10 year warranty cover labor costs if the compressor fails? +

No. The warranty covers compressor replacement parts and internal components, but homeowners pay all technician labor charges. Budget $500 to $1,200 for service calls depending on your geographic location and HVAC contractor rates.

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