3 Ton 14 SEER 80% AFUE 80,000 BTU Goodman Gas Furnace and Air Conditioner System - Horizontal Review 2026

// Bottom Line

This Goodman system delivers solid baseline efficiency at an aggressive $2053 price point, making it ideal for budget replacements on smaller homes or rental properties. The 80% AFUE furnace and 14 SEER air conditioner won't compete with high-efficiency models, but the Energy Star certification and variable-speed blower justify the value for cost-sensitive installations.

Review

The Goodman 3-ton horizontal A-coil system represents the value-tier option in modern matched HVAC packages. At $2053, this bundle bundles an 80% AFUE two-stage furnace with an 80,000 BTU heating capacity, paired with a 34,800 BTU (3-ton) air conditioner rated at 14 SEER. It's positioned for contractors managing tight budgets and homeowners who need functional climate control without premium efficiency standards. Online Supply's SKU LS38783850 carries Goodman's reputation without the mid-tier pricing that often accompanies their more robust product lines.

Performance specs show a variable-speed blower motor capable of 2000 CFM maximum, with the furnace burning natural gas or propane at two burner stages for improved part-load operation. The air conditioning side uses a scroll compressor with single-stage capacity, R410A refrigerant, and a decibel rating of 73.5 dBA, placing it in the moderate noise range for residential units. Energy Star certification validates that despite the 80% AFUE rating, the combination meets minimum environmental standards, though heating-dominated regions will notice higher seasonal fuel consumption compared to 90%+ efficiency alternatives.

Pros & Cons

Pros

Aggressive $2053 price for a matched 3-ton system with furnace and coil included
Energy Star certified despite 80% AFUE, with variable-speed blower motor reducing runtime costs
Two-stage burner and single-stage compressor provide reliable part-load efficiency in moderate climates
A-coil design simplifies upflow and horizontal installations without structural modifications
10-year warranty with online registration covers both furnace and cooling components

Cons

80% AFUE is below modern 95%+ standards, meaning higher heating bills in cold climates
14 SEER cooling (actual specs show 16 SEER2 rating, unclear methodology discrepancy) trails current efficiency leaders by 5-8 points
Single-stage compressor cannot modulate capacity, cycling on/off rather than continuous operation

Who Should Buy

Best For

Contractors replacing worn systems on budget-constrained residential jobs in moderate climates, and homeowners in rental properties where upfront cost matters more than operating expenses. The horizontal A-coil configuration works especially well for basement or attic retrofits with tight vertical space.

Consider Alternatives If

Homeowners in northern climates prioritizing heating efficiency, or anyone willing to invest more upfront for 95%+ AFUE and 18+ SEER systems that pay for themselves within 8-10 years through energy savings.

3 Ton 14 SEER 80% AFUE 80,000 BTU Goodman Gas Furn

$2053

Buy at HVACDirect →

Installation

This horizontal A-coil suits basement or utility closet installations with moderate clearance. The unit measures 38.25 inches tall, 29 inches wide, and 29 inches deep, with a 50-foot maximum suction line run. Requires 208/230V single-phase 60Hz service with 18.7 to 30 amp breaker capacity. Metal exhaust flue mandatory for furnace installation. Refrigerant line sizing includes 3/8 inch liquid and 7/8 inch suction connections with 3/4 inch insulation thickness.

Warranty & Reliability

Goodman provides 10 years of parts coverage when registered online, protecting against compressor failure and heat exchanger defects. Registration is straightforward but mandatory to activate the full term, so documentation upon installation is critical. This warranty matches competitor baseline coverage and reflects Goodman's confidence in scroll compressor longevity. Coverage typically excludes labor, requiring contractor service calls to be billed separately.

Specifications

SKU	LS38783850
Brand/Manufacturer	Online Supply
Cooling BTU	34,800
Heating BTU	80,000
Refrigerant	R410A
Electrical	208 / 230 V. 1 Phase 60 Hz
Warranty	10 Years with Online Registration
Decibel Level (dBA)	73.5
Weight (in lbs)	30.000000
Feature	Spec
Configuration	Upflow/Horizontal
Liquid Line	3/8"
Suction Line	7/8"
Tonnage	3 Ton
Style	A-Coil
Height	38.25"
Width	29"
Depth	29"
Resources	Goodman Brochure Goodman Specifications Goodman Installation Manual Goodman Warranty Information Goodman Service Instructions Goodman Kit Instructions Goodman Parts Manual 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.
AHRI Certificate Number	204633302
Airflow Direction	Upflow/Horizontal
Exhaust Flue Requirement	Metal
Furnace Efficiency / AFUE	80%
Blower Motor	Variable Speed
Maximum CFM	2000
Burner Stages	Two
Fuel Type	Propane, Natural Gas
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	30 amps
Min. Breaker Size	18.7 amps
Suction Line Insulation Thickness	3/4"
Length	50 feet

Frequently Asked Questions

How does 14 SEER cooling efficiency compare to current standards? +

14 SEER is solid baseline efficiency, but modern systems achieve 16-18 SEER regularly. The specs show 16 SEER1 rating, suggesting potential methodology differences. For moderate climates with 500-1200 cooling hours annually, this unit recovers its cost difference in 10-12 years versus higher SEER options.

Can this system handle hot climates or heavy cooling demand? +

The single-stage compressor cycles on/off rather than modulating capacity, making it less efficient in sustained heat. For regions exceeding 2000 annual cooling hours, upgrading to variable-capacity compressor systems reduces energy waste. The 34,800 BTU capacity suits 3-ton homes with average cooling load profiles.

What are the installation requirements for the horizontal A-coil? +

Horizontal A-coils fit tight attics and basements without tall ductwork. Requires 50-foot maximum refrigerant line run between indoor/outdoor units, metal furnace exhaust venting, and 208/230V service with 18.7-30 amp breaker. Upflow/horizontal airflow direction simplifies basement retrofit installations.

How does 80% AFUE furnace efficiency impact heating costs? +

80% AFUE means 20% of fuel energy exits as exhaust. Upgrading to 95% AFUE saves roughly 15% on heating annually in northern climates. Over 10 years, the efficiency gap totals 1500-2500 dollars in natural gas costs, though upfront system cost differences are often larger.

Is the 10-year warranty sufficient coverage for this price point? +

Yes. The 10-year parts warranty matches industry standards and covers major failures. However, parts-only coverage excludes labor, so verify contractor service availability before purchase to avoid expensive emergency repairs outside warranty terms.

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