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

// Bottom Line

This 2-ton Goodman system works best for homeowners upgrading from older 80s-era equipment who want balanced efficiency without premium pricing. The 80% AFUE furnace and 15 SEER condenser deliver modest energy savings, and the variable-speed blower improves comfort and humidity control compared to single-stage competitors.

Review

The Goodman 2-ton split system represents a practical middle-ground option in today's HVAC market. This upflow configuration pairs an 80% AFUE gas furnace rated at 100,000 BTU with a 3.5-ton air conditioning condenser capable of 23,600 cooling BTU. Energy Star certification and a scroll compressor suggest solid engineering for residential applications. At this price point, it competes directly with mid-tier contractor packages from Lennox and Carrier, making it worth careful evaluation.

Performance specs tell an honest story about efficiency positioning. The 15 SEER cooling efficiency exceeds baseline requirements but trails high-efficiency models at 18+ SEER. The 80% AFUE furnace operates at industry minimum efficiency, meaning 20% of heating energy vents as waste. Two-stage burner operation and a variable-speed blower at 2000 CFM maximum do mitigate these limitations by reducing runtime and improving part-load response. Real-world heating and cooling costs will fall below 1990s equipment but not dramatically below 2010s systems.

Pros & Cons

Pros

Variable-speed blower motor reduces short-cycling and improves temperature consistency throughout the home
Two-stage burner on furnace allows low-fire operation for better part-load efficiency in mild weather
Energy Star certified with 16 SEER1 condenser rating, exceeding the minimum 14 SEER baseline
Scroll compressor design runs quieter at 71.5 dBA and offers proven reliability in residential applications
10-year warranty with online registration provides meaningful protection for this $0 system investment

Cons

80% AFUE furnace is baseline efficiency, not high-efficiency, leaving potential energy savings on the table compared to 95% models
Single-stage condenser cannot modulate cooling capacity, limiting part-load efficiency during shoulder seasons
Requires metal exhaust flue, which may necessitate additional venting modifications in some homes

Who Should Buy

Best For

Homeowners in moderate climates seeking a dependable system replacement without upgrading to premium efficiency tiers. This setup appeals to budget-conscious buyers who value the variable-speed blower's comfort improvements over high-end modulation features.

Consider Alternatives If

Anyone in extreme climates or with high heating/cooling costs should consider 95% AFUE furnaces and 18+ SEER condenser units instead.

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

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Installation

Installation complexity ranks moderate. The unit requires 120V single-phase 60Hz power with 12.4 to 20 amp breaker sizing, standard for most residential panels. Suction lines come pre-insulated at 3/4 inch thickness with 50 feet maximum length, simplifying fieldwork. Metal exhaust flue requirement means furnace placement cannot use standard PVC venting. Technicians should allow 6 to 8 hours for a complete replacement including electrical, refrigerant, and gas connections.

Warranty & Reliability

Goodman backs this system with a 10-year parts warranty, activated through online registration. Coverage applies to the compressor, condenser coil, and furnace heat exchanger. This timeframe is standard across mid-tier manufacturers but trails extended warranties available from higher-priced brands. Registration is simple but mandatory to activate full protection, so document your purchase immediately upon installation.

Specifications

SKU	LS38343850
Brand/Manufacturer	Online Supply
Cooling BTU	23,600
Heating BTU	100,000
Refrigerant	R410A or R22
Electrical	120 V. 1 Phase 60 Hz
Warranty	10 Years with Online Registration
Decibel Level (dBA)	71.5
Weight (in lbs)	22.000000
Feature	Spec
Replaces	GSX16S241
Energy Star	Yes
SEER1 (Efficiency)	16
Condenser Stages	Single Stage
Compressor Type	Scroll
Liquid Valve Size	3/8"
Suction Valve Size	3/4"
Max Breaker Size	20 amps
Min. Breaker Size	12.4 amps
Tonnage	3.5 Ton
Height	26"
Width	21"
Depth	21"
Resources	CAPF Installation Manual CAPF 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	3/4"
Style	A-Coil
Suction Line Insulation Thickness	3/4"
Length	50 feet

Frequently Asked Questions

What does 15 SEER mean in practical cooling cost terms? +

SEER rating indicates efficiency per watt consumed. A 15 SEER unit uses approximately 6.7 watts to move 1 BTU. Real cooling costs depend on your local electricity rate and climate cooling hours. A 2-ton unit running 1000 hours annually costs roughly $150-$250 more than an 18 SEER equivalent, making the payback period 8-12 years in moderate climates.

Can this system use both R410A and R22 refrigerants as the specs suggest? +

No, you must choose one or the other at installation. R410A is the modern standard and recommended choice. R22 is legacy refrigerant phased out by EPA regulations. Technicians occasionally note R22 capability for replacement flexibility, but new installations should specify R410A exclusively for regulatory compliance and future serviceability.

How much quieter is 71.5 dBA compared to single-stage units? +

Single-stage scroll compressors typically run 74-76 dBA. At 71.5 dBA, this unit is noticeably quieter, roughly 40% less sound intensity. You'll perceive meaningful difference standing 10 feet away during cooling cycles. Variable-speed operation further reduces noise during partial-load cooling when compressor runs at lower capacity.

Should I upgrade to a higher-efficiency furnace like 95% AFUE? +

In heating-dominant regions, 95% AFUE furnaces recover $800-$1200 annually in fuel savings. In mild climates with 3000 heating degree days or fewer, payback exceeds 10 years. For moderate climates with 4000-6000 degree days, 90% AFUE models offer better value than jumping to 95% efficiency.

Does the 10-year warranty cover labor and parts equally? +

Standard Goodman coverage includes parts only. Labor costs for compressor replacement or coil repairs fall on the homeowner or contractor. Total replacement costs typically range $1500-$2500 even with warranty coverage. Extended labor warranties are available separately from some dealers for additional protection.

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