5 Ton 14 SEER 96% AFUE 120,000 BTU Goodman Gas Furnace and Air Conditioner System - Horizontal Review 2026

// Bottom Line

This Goodman system excels for homeowners in moderate to cold climates who prioritize heating efficiency and want to maximize energy savings. The 96% AFUE furnace paired with a 16 SEER1 condenser makes it ideal for areas with significant heating seasons and moderate cooling demands.

Review

Goodman's 5-ton horizontal system pairs a high-efficiency gas furnace with an air conditioner, creating a complete climate control solution. The furnace delivers 120,000 BTU of heating capacity with 96% AFUE, while the condenser provides 57,000 BTU of cooling. Energy Star certification and manufacturer reputation make this a practical choice for homeowners upgrading older split systems or contractors seeking reliable spec-sheet credentials.

Performance metrics validate the efficiency claims. The 16 SEER1 rating on cooling and 96% AFUE on heating represent above-average efficiency for standard equipment. Two burner stages on the furnace allow it to modulate between high and low output, preventing short-cycling and extending compressor life. The variable-speed ECM blower motor matches airflow to actual demand, cutting runtime waste compared to single-speed alternatives.

Pros & Cons

Pros

Exceptional 96% AFUE furnace efficiency reduces natural gas consumption in heating-heavy climates
16 SEER1 rating on condenser achieves Energy Star certification for cooling performance
Two-stage burner provides better comfort and efficiency control during partial-load operation
Variable-speed ECM blower motor adapts airflow automatically, reducing unnecessary runtime costs
Lifetime heat exchanger warranty plus 10-year parts coverage with registration adds confidence

Cons

Single-stage compressor on cooling side limits efficiency at partial loads versus two-stage designs
73 dB noise level is moderately loud for some residential applications, especially at night
Requires 32.8 to 50-amp breaker sizing, which may necessitate electrical panel upgrades in older homes

Who Should Buy

Best For

Contractors and homeowners replacing systems in homes with ducted upflow or horizontal configurations, particularly in regions with cold winters where furnace efficiency directly impacts utility bills. This system rewards long-term residents who can recoup efficiency gains over 15-plus years.

Consider Alternatives If

Buyers in mild climates where cooling dominates should consider two-stage compressor systems. Those with space constraints should verify the 34.5-inch height and 30-pound weight fit available locations.

5 Ton 14 SEER 96% AFUE 120,000 BTU Goodman Gas Fur

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Installation

This horizontal A-coil unit requires proper ductwork alignment and careful placement in attics or crawlspaces due to its 34.5-inch height and 28.75-inch depth. Suction lines need 3/4-inch insulation over the 7/8-inch connection, and liquid lines use 3/8-inch ports. Plastic PVC exhaust flue is acceptable, simplifying venting compared to metal requirements. Proper refrigerant charge remains critical for 16 SEER1 performance.

Warranty & Reliability

Goodman backs the heat exchanger with lifetime coverage, protecting against the most expensive potential failure. The 10-year parts warranty requires online registration and covers compressor, motors, and coil failures. Labor costs remain the buyer's responsibility. This warranty structure reflects manufacturer confidence while keeping initial cost competitive against premium brands.

Specifications

SKU	LS38783850
Brand/Manufacturer	Online Supply
Cooling BTU	57,000
Heating BTU	120,000
Refrigerant	R410A
Electrical	115 V. 1 Phase 60 Hz
Warranty	Lifetime Heat Exchanger and 10 Years Parts with Online Registration
Decibel Level (dBA)	73
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	50 amps
Min. Breaker Size	32.8 amps
Tonnage	5 Ton
Height	34.5"
Width	24.5"
Depth	28.75"
Resources	Goodman Brochure Goodman Install Instructions Goodman Parts Manual Goodman Service Manual Goodman Specifications Goodman Technical Information Goodman User Information Goodman 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
AHRI Certificate Number	7368842
Airflow Direction	Upflow/Horizontal
Exhaust Flue Requirement	Plastic / PVC
Product Features	Rebate Available
Furnace Efficiency / AFUE	96%
Blower Motor	Variable Speed - ECM
Maximum CFM	2000
Burner Stages	Two
Fuel Type	Propane, Natural Gas
Suction Line Insulation Thickness	3/4"
Length	50 feet

Frequently Asked Questions

What does the 16 SEER1 rating mean compared to older SEER ratings? +

SEER1 uses updated testing standards closer to real-world conditions, so 16 SEER1 represents stronger cooling efficiency than the older SEER metric. This unit qualifies for Energy Star status, meaning it consumes approximately 15% less energy than standard models. Your actual savings depend on climate and runtime hours.

Can this horizontal unit fit in a standard attic space? +

At 34.5 inches tall and 28.75 inches deep, this A-coil requires 3-4 feet of clearance above the unit plus accessibility for service. Most attics can accommodate it, but verify rafter spacing and ensure adequate return air flow. Your HVAC installer must confirm fit before delivery.

Why does the furnace have two burner stages if the condenser is single-stage? +

Two-stage burners provide comfort during mild winter days when full 120,000 BTU capacity isn't needed. Running at 60% capacity uses less fuel and reduces cycling. The single-stage compressor handles all cooling demand, which is standard practice since heating typically dominates in Goodman system applications.

How does this compare to Bryant or Carrier equivalents? +

Goodman competes on efficiency specifications and warranty, offering comparable 96% AFUE and 16 SEER1 ratings. Premium brands add quieter operation and fancier controls. This Goodman system delivers 90% of the performance at 70% of the price, favoring homeowners focused on ROI over brand prestige.

Will I need a new electrical circuit for the 50-amp breaker requirement? +

Most homes already have 50-60-amp capacity available. However, verify your panel's main amperage and available space with your electrician before purchase. Older 100-amp panels may require upgrading, adding $500-1,500 to installation costs.

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