5 Ton 15 SEER 97% AFUE 100,000 BTU Goodman Gas Furnace and Air Conditioner System - Upflow Review 2026

// Bottom Line

This Goodman 5-ton system is ideal for homeowners upgrading mid-sized homes who prioritize year-round efficiency and long-term savings. The 97% AFUE furnace and 16 SEER2 air conditioner deliver exceptional operating costs, especially in mixed climates where both heating and cooling see heavy use.

Review

The Goodman 5-ton gas furnace and air conditioner system targets the mainstream replacement market, where homeowners need reliable comfort without premium pricing. This upflow configuration handles typical split-system installations in residential applications. The combination of 100,000 BTU heating capacity and 54,000 BTU cooling capacity covers most single-family homes and light commercial spaces. Online Supply's distribution model keeps costs competitive while maintaining manufacturer backing through a 10-year warranty with registration.

Efficiency numbers tell the real story here. The 97% AFUE furnace means only 3% of natural gas or propane energy escapes as waste, placing this unit among the highest-efficiency residential gas furnaces available. Cooling efficiency at 16 SEER2 (published specs show SEER1 rating of 16, which translates to roughly 16 SEER2) exceeds the product's advertised 15 SEER baseline. The modulating burner makes a measurable difference in homes with variable heating loads. The variable-speed ECM blower reduces runtime during shoulder seasons, stretching monthly operating costs downward even further.

Pros & Cons

Pros

97% AFUE furnace efficiency means nearly all fuel converts to heat, reducing winter heating bills significantly
16 SEER2 cooling efficiency (exceeds the stated 15 SEER) qualifies for Energy Star and utility rebates
Modulating burner automatically adjusts heating output, preventing overshooting and improving comfort consistency
Variable-speed ECM blower runs quieter at part-load, reducing energy waste during mild weather
Scroll compressor is known for durability and reliable performance across thousands of operating hours

Cons

Single-stage cooling condenser cannot modulate capacity, cycling on-off rather than varying output like two-stage units
73 dBA noise level is audible from neighboring properties during cooling season operation
Requires 115V dedicated circuit with 29.6 to 50 amp capacity, necessitating electrical upgrades in older homes

Who Should Buy

Best For

Homeowners in 2,000 to 2,500 square foot homes looking to replace aging furnace-AC systems and reduce utility bills by 20-30%. Contractors installing complete systems where upflow configuration fits the home's ductwork layout.

Consider Alternatives If

Buyers seeking ultra-quiet operation or those in cooling-dominant climates should explore two-stage condenser options that offer variable capacity and lower noise profiles.

5 Ton 15 SEER 97% AFUE 100,000 BTU Goodman Gas Fur

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Installation

This upflow A-coil configuration requires proper ductwork alignment with return air below and supply air above. Refrigerant line sets come pre-charged for up to 50 feet of copper (1 1/8" suction, 3/8" liquid), accommodating typical split placements. The 30 by 21 by 21 inch footprint fits most utility closets and basements. Electrical demands are straightforward at 115V single-phase, though the 29.6 to 50 amp range requires a dedicated breaker and possibly panel upgrades. AHRI certificate 7424267 confirms matched coil pairing.

Warranty & Reliability

The 10-year parts warranty applies when owners register online, providing solid protection against compressor and heat exchanger failure. Goodman's track record shows most units run trouble-free during this window with proper maintenance. The evaporator coil carries separate warranty coverage. This period covers typical compressor life expectancy, though labor costs remain the buyer's responsibility after year one.

Specifications

SKU	LS381183850
Brand/Manufacturer	Online Supply
Cooling BTU	54,000
Heating BTU	100,000
Refrigerant	R410A
Electrical	115 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.
AHRI Certificate Number	7424267
Airflow Direction	Upflow/Horizontal
Exhaust Flue Requirement	Plastic / PVC
Product Features	Rebate Available
Furnace Efficiency / AFUE	97%
Blower Motor	Variable Speed - ECM
Maximum CFM	2000
Configuration	Upflow / Downflow
Flue Location	Right
Burner Stages	Modulating
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

What's the real difference between the 15 SEER rating and 16 SEER2 specs listed? +

SEER2 is the newer EPA testing standard using realistic conditions. The 16 SEER2 rating indicates superior efficiency compared to older SEER measurements. This system exceeds its advertised baseline, delivering better cooling efficiency than the 15 SEER claim suggests for actual real-world operation.

Can this system handle propane instead of natural gas? +

Yes, the furnace accepts both propane and natural gas with proper burner setup during installation. Confirm your fuel type with the installer, as burner orifices differ between fuels. The system ships ready for natural gas but conversion is straightforward for propane applications.

How much will this system reduce my heating and cooling costs? +

A 97% AFUE furnace typically saves 20-30% on heating versus 80% AFUE units. The 16 SEER2 cooling saves similar percentages compared to 13-14 SEER systems. Actual savings depend on local utility rates, climate, and insulation quality. Most homeowners recover the investment in 5-8 years through energy savings.

Is single-stage cooling a drawback compared to two-stage units? +

Single-stage means the compressor runs at full capacity when active, cycling on-off as needed. Two-stage systems modulate output, improving comfort and efficiency at part-load. For most climates, single-stage works well and costs less. Two-stage benefits most in mild spring and fall weather where full capacity isn't needed constantly.

What does the 10-year warranty cover and what's excluded? +

Parts coverage includes the compressor, heat exchanger, and refrigerant circuit components when properly registered. Labor, refrigerant, and maintenance items are not covered. Damage from improper installation, electrical surges, or lack of maintenance voids coverage.

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