2.5 Ton 13 SEER 80% AFUE 60,000 BTU Goodman Gas Furnace and Air Conditioner System - Horizontal Review 2026

// Bottom Line

This horizontal configuration Goodman system works best for contractors and homeowners upgrading older equipment in tight spaces where upflow installation isn't possible. The two-stage gas furnace and single-stage condenser deliver reliable performance at an accessible price point, though it trails high-efficiency competitors in SEER ratings.

Review

The Goodman 2.5-ton horizontal furnace and air conditioner combination targets the mid-market HVAC replacement segment, where cost and dependable operation outweigh cutting-edge efficiency. This SKU LS38343850 system from Online Supply pairs a 60,000 BTU gas furnace with a matching 30,000 BTU condenser in a compact horizontal A-coil configuration. The two-piece design and horizontal orientation make it practical for attic installations, basement retrofits, and retrofit projects where traditional vertical mounting won't work. Weighing 22 pounds and measuring 32.5 inches tall by 26 inches wide and deep, it fits reasonable floor space constraints.

Performance metrics show this system delivers predictable, baseline-grade efficiency. The furnace's 80% AFUE rating means 80 cents of every heating dollar converts to heat, a solid standard that outperforms older equipment but trails premium models at 95% AFUE. The air conditioner achieves 13 SEER, placing it in the efficient-but-not-exceptional category for cooling. The two-stage burner reduces cycling losses by modulating output during partial-load operation, while the multi-speed blower motor supports variable airflow up to 1,200 CFM. Operating voltage is 208/230V single-phase at 60 Hz, requiring a 16.7 to 25-amp breaker and simplifying residential electrical integration.

Pros & Cons

Pros

Two-stage burner on furnace provides modulating heat output, reducing energy waste during mild weather
13 SEER cooling efficiency exceeds baseline standards, delivering 30,000 BTU at reasonable operating costs
High-efficiency multi-speed blower motor allows variable airflow up to 1,200 CFM, improving comfort control
Horizontal configuration accommodates attic or basement installations where vertical clearance is limited
10-year warranty with online registration provides meaningful coverage for residential applications
208/230V single-phase electrical requirement simplifies installation compared to three-phase systems

Cons

80% AFUE rating is standard-tier efficiency, not premium, so heating costs won't match 95%+ AFUE systems
Single-stage condenser lacks variable capacity, running at full power even during light cooling loads
73 dBA noise level is audible during operation, noticeable in quieter residential settings
Not Energy Star certified, reflecting its mid-range efficiency positioning

Who Should Buy

Best For

Contractors installing replacement systems in older homes with horizontal ductwork layouts, and budget-conscious homeowners seeking reliable performance without premium efficiency pricing. This system balances upfront cost savings against moderate operating expenses over its 10-year lifespan.

Consider Alternatives If

Homeowners in high-efficiency markets like California should look at 95%+ AFUE furnaces and 16+ SEER equipment, and anyone prioritizing ultra-quiet operation should consider variable-capacity compressor units instead.

2.5 Ton 13 SEER 80% AFUE 60,000 BTU Goodman Gas Fu

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Installation

Installation suits standard residential ductwork. The system accepts 3/8-inch liquid lines and 3/4-inch suction lines with 3/4-inch insulation thickness, using sweat valve connections. Metal exhaust flue is required for the furnace. The horizontal configuration requires careful placement to maintain level operation and proper refrigerant return. Eight detailed resource documents, including the Goodman installation and technical manuals, guide technicians through setup. Most installations take one to two days for experienced contractors.

Warranty & Reliability

Online Supply backs this unit with a comprehensive 10-year warranty when registered. Coverage includes parts and compressor replacement, protecting against manufacturing defects. The 10-year term matches industry standards for residential equipment. Registration through Goodman's website is straightforward, required to activate full coverage. This warranty reflects reasonable confidence in component durability and provides meaningful peace-of-mind for homeowners.

Specifications

SKU	LS38343850
Brand/Manufacturer	Online Supply
Cooling BTU	30,000
Heating BTU	60,000
Refrigerant	R410A
Electrical	208 / 230 V. 1 Phase 60 Hz
Warranty	10 Years with Online Registration
Decibel Level (dBA)	73
Weight (in lbs)	22.000000
Feature	Spec
Airflow Direction	Upflow/Horizontal
Exhaust Flue Requirement	Metal
Furnace Efficiency / AFUE	80%
Blower Motor	High Efficiency Multi-Speed
Maximum CFM	1200
Configuration	Horizontal
Burner Stages	Two
Fuel Type	Gas
Height	32.5"
Width	26"
Depth	26"
Resources	Goodman Installation Manual Goodman Specifications Goodman Technical Manual Goodman Warranty Information Goodman Brochure 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.
Liquid Line	3/8"
Suction Line	3/4"
Tonnage	2.5 Ton
Style	A-Coil
Energy Star	No
SEER1 (Efficiency)	13
Condenser Stages	Single Stage
Compressor Type	Reciprocating
Liquid Valve Size	3/8"
Max Breaker Size	25 amps
Min. Breaker Size	16.7 amps
Valve Type	Sweat
Suction Line Insulation Thickness	3/4"
Length	50 feet

Frequently Asked Questions

What does 80% AFUE mean for my heating bills? +

AFUE measures furnace heating efficiency. At 80%, your system converts 80 cents of every gas dollar into usable heat, with 20 cents lost up the flue. A premium 95% AFUE system would save roughly 15-20% on heating costs over time, but requires higher upfront investment. The payback period depends on local gas prices and climate.

Can I install this in my attic with horizontal ductwork? +

Yes, the horizontal configuration is designed for this application. The 32.5-inch height fits most attic spaces, and the unit accepts standard ductwork connections. Ensure proper flue venting, refrigerant line insulation to prevent condensation, and adequate clearance for maintenance access. Follow the Goodman installation manual for specific requirements.

How does 13 SEER cooling compare to newer systems? +

13 SEER is solid mid-tier efficiency, exceeding baseline 10 SEER units by about 30%. New high-efficiency systems hit 16-20 SEER, using variable-capacity compressors and advanced controls. For average homeowners, 13 SEER delivers reasonable cooling cost control without premium pricing, though efficiency-focused buyers may prefer newer technology.

Is this system better than my current 10-year-old equipment? +

Likely yes. Older systems typically run 10-12 SEER cooling and 75-78% AFUE heating. This Goodman unit improves cooling by 1-3 points SEER and heating by 2-5% AFUE, translating to 10-15% annual energy savings depending on your climate and usage patterns. Replace if your current system is over 12 years old.

What happens if something breaks during the warranty period? +

Contact Online Supply or Goodman with your registration proof. The 10-year warranty covers parts and compressor replacement for manufacturing defects. Labor coverage varies by installer and warranty plan. Review your specific warranty documents before purchase to confirm labor inclusions.

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