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

// Bottom Line

This Goodman system is built for contractors and homeowners in mid-to-large homes who need reliable climate control without premium pricing. The two-stage burner and multi-speed blower deliver consistent comfort across varied seasons, making it a practical workhorse for moderate climates.

Review

The Goodman 5-ton upflow gas furnace and air conditioner system represents a middle-market offering built for contractors and homeowners seeking dependable performance without premium pricing. Online Supply positions this unit as a practical replacement solution for homes requiring both heating and cooling in a single integrated package. The system's Energy Star certification signals baseline efficiency commitments, while the SKU LS381183850 spec sheet confirms Goodman's core manufacturing standards. This is the kind of system that disappears into the background, doing its job reliably through seasons without demanding attention.

Performance specifications tell a straightforward story. The furnace delivers 80,000 BTU heating output at 80% AFUE efficiency, meaning one unit of fuel produces 0.80 units of usable heat. The air conditioner side handles 54,000 BTU cooling at 16 SEER1 efficiency, translating to competitive seasonal performance in moderate climates. The two-stage burner and high-efficiency multi-speed blower prevent short-cycling, reducing temperature swings and keeping electric usage steady. At 2000 maximum CFM with a scroll compressor and R410A refrigerant, the system moves conditioned air effectively through ducts without aggressive cycling.

Pros & Cons

Pros

Energy Star certified with 16 SEER1 cooling efficiency and 80% AFUE heating efficiency
Two-stage burner and high-efficiency multi-speed blower motor optimize comfort and reduce utility swings
5-ton capacity handles up to 54,000 BTU cooling and 80,000 BTU heating in single unit
208/230V single-phase operation fits standard residential electrical service without upgrades
Compact 30x21x21 inch footprint with upflow/downflow flexibility simplifies retrofit installations

Cons

80% AFUE falls short of high-efficiency 95% AFUE systems available at similar price points
16 SEER1 rating is respectable but trails top-tier 18-20 SEER systems by meaningful margins
73 dB noise level runs louder than quieter variable-speed competitors during cooling cycles

Who Should Buy

Best For

Homeowners in moderate climates upgrading 15-20 year old systems will appreciate the efficiency bump and reliability without overpaying for premium features. Contractors installing replacement systems in cost-conscious markets will find the two-stage burner and Energy Star rating attractive for customer satisfaction.

Consider Alternatives If

Buyers in extreme heat climates needing maximum cooling efficiency or those prioritizing whisper-quiet operation should explore higher SEER systems or variable-speed units.

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

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Installation

Installation suits contractors comfortable with standard gas furnace procedures. Metal exhaust flue is required for the furnace section, limiting flexibility compared to condensing units. Electrical demands are reasonable: 208/230V single-phase at 60 Hz with breaker requirements ranging from 29.6 to 50 amps. The compact 30x21x21 inch frame fits typical utility closets and basements. A-coil design with 1/2 inch suction line insulation and specified valve sizes streamlines connection to existing ductwork.

Warranty & Reliability

Goodman backs this unit with a 10-year warranty upon online registration, covering parts and labor defects. This aligns with industry mid-tier standards and provides reasonable protection for equipment expected to operate 15-20 years. Registration is straightforward but required, so buyers must complete paperwork to activate coverage. Evaporator coil carries separate warranty protection, documented in provided resources.

Specifications

SKU	LS381183850
Brand/Manufacturer	Online Supply
Cooling BTU	54,000
Heating BTU	80,000
Refrigerant	R410A
Electrical	208 / 230 V. 1 Phase 60 Hz
Warranty	10 Years with Online Registration
Decibel Level (dBA)	73
Weight (in lbs)	48.000000
Feature	Spec
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
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.
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
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 does 16 SEER1 cooling efficiency actually mean for my energy bills? +

SEER1 measures cooling efficiency; 16 SEER1 means the system produces 16 BTU of cooling per watt-hour consumed. Compared to older 10-12 SEER units, expect 25-35% lower cooling energy costs. Real savings depend on local electricity rates and cooling hours. A 5-ton system running 800 hours annually could save $300-500 versus 10 SEER equivalents.

Can this system work in my attic upflow or basement downflow installation? +

Yes. The configuration supports both upflow and downflow orientation, giving installers flexibility for retrofit work. Ensure adequate return air clearance and metal flue venting through roof or wall. The compact 30x21x21 inch dimensions fit most utility spaces, but verify ductwork connections match your existing system layout before ordering.

How does 80% AFUE furnace efficiency compare to newer high-efficiency units? +

80% AFUE is baseline efficiency. Modern 95% AFUE condensing furnaces recover exhaust heat, producing 15 percentage points more usable heat per fuel unit. This costs more upfront but saves $200-400 annually in heating costs. The 80% AFUE here is reliable and acceptable for moderate climates where heating seasons are moderate.

Is this a good match if my home currently has a 3-ton system? +

Upgrading to 5 tons would over-size cooling capacity for most homes, causing short-cycling and poor dehumidification. Size systems to match your home's load calculation, not manufacturer maximums. A contractor should perform Manual J sizing to confirm tonnage needs before installation.

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

The 10-year Goodman warranty requires online registration within specified timeframes to activate coverage. Without registration, warranty claims may be denied. Keep proof of purchase and complete registration promptly through Goodman's website.

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