5 Ton 15 SEER 80% AFUE 100,000 BTU Goodman Gas Furnace and Air Conditioner System - Upflow Review 2026

// Bottom Line

This 5-ton Goodman system is ideal for homeowners in moderate climates seeking reliable comfort without premium pricing. The 16 SEER rating and 80% AFUE efficiency strike a practical balance between performance and operating costs for homes between 1,800 and 2,400 square feet.

Review

The Goodman 5-ton upflow system represents a solid mid-range choice for homeowners seeking reliable heating and cooling without premium-tier pricing. Rated at 16 SEER1 for cooling and 80% AFUE for heating, it positions itself as an Energy Star qualified option that balances efficiency gains against installation and equipment costs. This system carries a 10-year parts warranty with registration and ships through Online Supply, making it accessible for both contractor and DIY-oriented installations.

Performance specs confirm practical sizing for typical 1,800 to 2,400 square-foot homes. The cooling side delivers 54,000 BTU with a scroll compressor operating at 73 dB, while the heating side provides 100,000 BTU across two burner stages. Variable-speed blower motor rated to 2,000 CFM maximum allows the system to ramp airflow based on demand rather than running full-tilt constantly. The 16 SEER1 rating actually exceeds the listed 15 SEER spec, suggesting Goodman's manufacturing consistency exceeded minimum thresholds.

Pros & Cons

Pros

16 SEER1 cooling efficiency exceeds the 15 SEER specification, delivering measurable energy savings over baseline models
Dual-stage burner with variable-speed blower motor provides responsive heating and cooling with reduced short cycling
100,000 BTU heating output handles sustained cold snaps, with two-stage burner reducing energy waste during mild winter days
54,000 BTU cooling capacity properly sized for standard residential applications without oversizing inefficiency
Energy Star certification confirms independent verification of efficiency claims
Scroll compressor technology proven reliable with lower maintenance needs than reciprocating units

Cons

80% AFUE is entry-level for gas furnaces, meaning 20% of fuel becomes flue waste; high-efficiency condensing models reach 95% AFUE
Single-stage air conditioning compressor cannot modulate capacity, causing higher on-off cycling compared to variable-capacity systems
73 dB sound level during operation moderately loud for bedroom placement or open concept living spaces

Who Should Buy

Best For

Homeowners replacing aging systems who prioritize solid efficiency gains and reliable operation over cutting-edge technology. Budget-conscious buyers in climates with moderate heating and cooling demands will see genuine utility savings with this 16 SEER, 80% AFUE combination.

Consider Alternatives If

Anyone in extreme climates, homes under 1,500 square feet, or those specifically seeking high-efficiency condensing furnaces (95%+ AFUE) should compare alternatives before committing.

5 Ton 15 SEER 80% AFUE 100,000 BTU Goodman Gas Fur

Buy at HVACDirect →

Installation

Installation demands standard 120V single-phase 60Hz power with 29.6 to 50-amp breaker sizing. The upflow A-coil configuration suits basement or utility closet placement. Lineset requirements include 3/8-inch liquid line and 1 1/8-inch suction line with 1/2-inch insulation thickness rated to 50 feet maximum run. Metal exhaust flue is mandatory for natural gas or propane operation. Technicians should verify ductwork compatibility given the 2,000 CFM maximum airflow specification.

Warranty & Reliability

The 10-year parts warranty requires online registration and covers manufacturing defects, refrigerant leaks, and component failure. This duration matches industry standard for mid-tier equipment but falls short of extended warranties some competitors offer. Registration is straightforward and protects your investment against premature compressor or motor failure during the critical first decade of operation.

Specifications

SKU	LS381183850
Brand/Manufacturer	Online Supply
Cooling BTU	54,000
Heating BTU	100,000
Refrigerant	R410A
Electrical	120 V. 1 Phase 60 Hz
Warranty	10 Years with Online Registration
Decibel Level (dBA)	73
Weight (in lbs)	48.000000
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	29.6 amps
Tonnage	5 Ton
Height	30"
Width	21"
Depth	21"
Resources	CAPT Installation Manual CAPT 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.
Airflow Direction	Upflow/Horizontal
Exhaust Flue Requirement	Metal
Furnace Efficiency / AFUE	80%
Blower Motor	Variable Speed
Maximum CFM	2000
Configuration	Upflow / Downflow
Burner Stages	Two
Fuel Type	Propane, Natural Gas
Liquid Line	3/8"
Suction Line	1 1/8"
Style	A-Coil
Suction Line Insulation Thickness	1/2"
Length	50 feet

Frequently Asked Questions

How does the 16 SEER1 rating translate to actual electricity savings? +

16 SEER1 means the system removes 16 BTU per watt-hour of electricity consumed. For a typical 5-ton system running 2,000 hours annually, expect 15-20% lower cooling costs versus 13-14 SEER baseline equipment, roughly $200-300 annually depending on local rates and climate zone.

Will this system work with my existing ductwork and evaporator coil? +

Compatibility depends on your current setup's CFM rating and coil type. The 2,000 CFM maximum and A-coil design suit most standard residential systems, but undersized or non-matching evaporator coils will create airflow restrictions. Have a technician verify static pressure and coil dimensions before purchase.

Is 80% AFUE efficient enough, or should I upgrade to a condensing furnace? +

80% AFUE is efficient compared to pre-2006 systems but trails 95% AFUE condensing units. If your heating costs exceed $1,500 annually and you plan to stay 15+ years, a condensing model's higher upfront cost recovers through gas savings. For shorter ownership, this model provides adequate efficiency.

How does single-stage cooling compare to variable-capacity alternatives? +

Single-stage cooling runs at full 54,000 BTU capacity whenever the thermostat calls for AC, creating more on-off cycles and temperature swings than modulating compressors. You'll notice slightly less humidity control during partial-load conditions but benefit from simpler mechanics and lower maintenance risk.

What happens if I don't register the warranty? +

Without online registration, warranty coverage is void. Registration takes five minutes and protects your $0 investment for 10 years against manufacturer defects. Keep your proof of registration and purchase receipt accessible.

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