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

// Bottom Line

This system makes sense for budget-conscious homeowners replacing older equipment in moderate climates where 80% AFUE is acceptable. At $115, you're getting a functional dual-fuel furnace and air conditioner package, though the heating efficiency lags behind modern standards.

Review

The Goodman 2 Ton 15 SEER 80% AFUE system is a stripped-down, no-frills approach to dual-fuel climate control. At $115, this upflow configuration targets homeowners and investors who prioritize initial cost over operating expenses. The package includes a 100,000 BTU furnace and 23,600 BTU cooling capacity, making it suitable for small to medium residential spaces. This is entry-level equipment designed for replacement cycles rather than premium performance.

Performance specs reveal both strengths and compromises. The 80% AFUE heating efficiency means roughly one-fifth of fuel energy is lost, typical for single-stage systems but significantly below modern 95%+ AFUE standards. Cooling delivers 16 SEER1 efficiency with a scroll compressor and single-stage operation, earning Energy Star certification. The variable speed blower reaches 2000 CFM maximum, and two-stage burner heating allows partial load operation. The 71.5 dB noise output during operation is louder than quieter systems, which may be noticeable in bedrooms or living areas.

Pros & Cons

Pros

Excellent value at $115 for a complete furnace and AC system package
Variable speed blower motor with 2000 CFM maximum airflow for better comfort control
Energy Star certified for the cooling side with 16 SEER1 rating
Two-stage burner provides modulating heating for improved efficiency and comfort
10-year warranty with online registration covers major components
Dual fuel capability supports both natural gas and propane
Compact A-coil design at 26 inches tall fits tight spaces

Cons

80% AFUE is below modern standards, missing out on potential fuel savings versus 95%+ systems
SEER1 of 16 is decent but not top-tier compared to 18-22 SEER2 competitors
71.5 dB noise level is noticeably loud for a residential system during operation
Tonnage mismatch: furnace rated 100,000 BTU (2 ton) while AC is 3.5 ton creates imbalance
Requires metal exhaust flue which may add installation costs in some homes

Who Should Buy

Best For

Budget-conscious homeowners in mild to moderate climates who need reliable backup heating and cooling without premium efficiency features. Landlords and rental property managers will appreciate the low upfront cost and solid 10-year warranty.

Consider Alternatives If

Anyone in cold climates where heating dominates should look for 90%+ AFUE systems, and efficiency-focused buyers upgrading existing equipment should consider 18+ SEER2 rated units.

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

$115

Buy at HVACDirect →

Installation

Installation requires 208/230V single-phase 60 Hz electrical service with breaker sizing between 12.4 and 20 amps, well within standard residential panels. The system needs metal exhaust flue, which existing homes may or may not have available without modification. Upflow orientation works in basements or utility closets. Pre-charged refrigerant lines come in 50-foot lengths for typical residential runs. HVAC contractors should review the CAPF installation manual before starting work.

Warranty & Reliability

Ten-year warranty covers manufacturing defects when registered online with the manufacturer. This applies to major components including the compressor, heat exchanger, and coil. Parts replacement is covered; labor is not. Registration is mandatory to activate full coverage, and proof of professional installation may be required. This warranty is standard for Goodman products at this price point.

Specifications

SKU	LS38343850
Brand/Manufacturer	Online Supply
Cooling BTU	23,600
Heating BTU	100,000
Refrigerant	R410A or R22
Electrical	208 / 230 V. 1 Phase 60 Hz
Warranty	10 Years with Online Registration
Decibel Level (dBA)	71.5
Weight (in lbs)	22.000000
Feature	Spec
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
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.
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
Liquid Line	3/8"
Suction Line	3/4"
Style	A-Coil
Suction Line Insulation Thickness	3/4"
Length	50 feet

Frequently Asked Questions

Why is there a tonnage mismatch between the furnace (2 ton) and air conditioner (3.5 ton)? +

The 100,000 BTU furnace equals 2 tons of heating, while the 23,600 BTU AC rating equals 2 tons of cooling. The spec sheet lists 3.5 ton tonnage, likely referring to an oversized coil capacity. This inconsistency suggests you should verify the actual cooling capacity with the retailer before purchase to ensure proper system balance.

Can this system be installed horizontally instead of upflow? +

Yes, the configuration specs indicate upflow/downflow capability. However, the furnace orientation affects condensation drainage and airflow direction, so installation must match your ductwork design. Consult the CAPF installation manual or a qualified technician to confirm your home's requirements before ordering.

How much will heating costs compare to a higher AFUE system? +

80% AFUE versus 95% AFUE means 15% higher fuel consumption for identical heating output. In a cold climate, that translates to roughly $200-400 additional annual heating bills on natural gas. In mild climates, the difference shrinks significantly, making this system more cost-effective over time.

Is this system quieter or louder than typical residential units? +

At 71.5 dB, this furnace is moderately loud. Typical quality systems run 65-68 dB. For reference, normal conversation is 60 dB and a loud alarm clock is 80 dB. You'll notice it in quiet rooms, especially during startup and two-stage burner operation at full capacity.

What refrigerant does this system use, and does it matter? +

The specs note R410A or R22 compatibility. R410A is the standard for modern systems and widely available. R22 is being phased out and will become expensive. Confirm which refrigerant your unit ships with, as R22 availability may limit service options in future years.

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