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

// Bottom Line

This Goodman 5-ton system works best for homeowners in mild-to-moderate climates seeking solid efficiency without premium pricing. The 16 SEER1 cooling and 80% AFUE heating deliver respectable performance for homes under 2,500 square feet, though the single-stage compressor means variable capacity isn't available.

Review

The Goodman 5-ton gas furnace and air conditioner combination is a mainstream choice for moderate residential applications. Branded under Online Supply's SKU LS381183850, this upflow system delivers 54,000 BTU cooling capacity and 100,000 BTU heating output in one compact footprint. It targets the practical middle ground between budget equipment and premium high-efficiency units, appealing to contractors and homeowners who want dependable performance without cutting-edge features or premium pricing.

Cooling performance reaches 16 SEER1 using a scroll compressor, surpassing the advertised 15 SEER specification and qualifying for ENERGY STAR. On the heating side, the 80% AFUE two-stage burner modulates between low and high fire for better part-load comfort. The high-efficiency multi-speed blower motor moves up to 2,000 CFM and adjusts speed to match actual heating and cooling demand, reducing unnecessary cycling. At 73 dBA, noise levels stay reasonable for residential outdoor placement.

Pros & Cons

Pros

16 SEER1 cooling efficiency exceeds the stated 15 SEER rating, qualifying for ENERGY STAR
Two-stage burner for heating allows better modulation and comfort control in variable conditions
High-efficiency multi-speed blower motor reduces runtime and energy waste
Compact A-coil design (30 inches tall, 21 inches wide) fits tight attic or basement spaces
10-year warranty with online registration provides solid coverage for defects

Cons

80% AFUE is industry standard but trails high-efficiency systems (90%+) by 10-15% on heating costs
Single-stage scroll compressor cannot modulate capacity, running full blast or off without intermediate speeds
R410A or R22 refrigerant flexibility complicates servicing and future transition planning

Who Should Buy

Best For

Homeowners in regions with moderate heating demands (zones 5-8) replacing older systems and prioritizing reasonable upfront cost over premium efficiency. Contractors installing in rental properties or value-conscious residential builds benefit from the straightforward Goodman architecture and standard parts availability.

Consider Alternatives If

Anyone in cold climates requiring frequent heating cycles should consider 90%+ AFUE furnaces, and buyers wanting variable-speed cooling should explore two-stage or variable-capacity compressor options.

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

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Installation

The upflow A-coil configuration fits tight spaces with dimensions of 30 inches tall by 21 inches wide by 21 inches deep. Electrically, it demands 120V single-phase 60Hz power with a 29.6 to 50-amp breaker, straightforward for most homes. Refrigerant lines ship with 50 feet of suction line and include 1/2-inch insulation. Metal exhaust flue is required for the furnace section. Technicians familiar with Goodman equipment will find this system quick to set up.

Warranty & Reliability

Goodman provides a 10-year manufacturer warranty when you register online. This covers defects in materials and workmanship across the compressor, coil, and furnace components. Coverage is contingent on professional installation and proper maintenance. Ten years is solid for mid-tier equipment and gives buyers reasonable peace of mind against premature failure during the most critical ownership period.

Specifications

SKU	LS381183850
Brand/Manufacturer	Online Supply
Cooling BTU	54,000
Heating BTU	100,000
Refrigerant	R410A or R22
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	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	High Efficiency Multi-Speed
Maximum CFM	2000
Configuration	Upflow / Downflow
Burner Stages	Two
Fuel Type	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 16 SEER1 compare to the advertised 15 SEER rating? +

SEER1 is the newer federal testing standard introduced in 2023, typically yielding higher numbers than legacy SEER ratings under identical conditions. This unit's 16 SEER1 confirms it exceeds the 15 SEER specification and qualifies for ENERGY STAR certification, meaning real-world cooling efficiency is above baseline expectation for the price point.

Can this system handle R22 refrigerant if my existing line set uses it? +

Yes, this Goodman unit accepts both R410A and R22 refrigerant, offering flexibility for retrofit installations. However, R22 is being phased out. If switching an old system to this unit, most technicians recommend converting to R410A for long-term serviceability and cost stability.

Is 80% AFUE adequate for cold climates? +

80% AFUE is adequate but not optimal for regions with harsh winters. In cold climates like Minnesota or Maine, 90%+ AFUE systems recover substantially more heat and reduce heating bills over time. Homeowners in zones 5 and colder should evaluate high-efficiency models despite higher upfront cost.

How does single-stage cooling differ from two-stage or variable capacity? +

Single-stage compressors run at full capacity or off, with no intermediate speeds. Two-stage and variable systems ramp output to match actual load, improving comfort and efficiency on mild days. This Goodman operates full blast immediately, cycling on and off more frequently in moderate conditions.

What does the 10-year warranty actually cover? +

The warranty covers defects in the compressor, evaporator coil, furnace heat exchanger, and blower motor. It requires online registration and professional installation. Wear items like fan blades and routine maintenance costs are not covered.

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