3 Ton 13 SEER 96% AFUE 80,000 BTU Goodman Gas Furnace and Air Conditioner System - Upflow Review 2026

// Bottom Line

This 3-ton Goodman system delivers respectable efficiency at an attractive price point for homeowners replacing aging equipment in moderate climates. It's a straightforward, single-stage unit that prioritizes heating performance (96% AFUE) over cooling fancy, making it ideal for mixed-season regions where both functions matter equally.

Review

The Goodman 3-ton upflow system combines a gas furnace and air conditioning unit designed for homeowners seeking dependable mid-range equipment. This SKU LS38783830 replaces older Goodman models (GSX130362, GSX130363, GSX130365) and delivers straightforward performance without unnecessary complexity. It's positioned as a practical choice for contractors installing baseline replacements and homeowners wanting proven reliability over cutting-edge features.

Performance specs reflect a heating-focused design: the 96% AFUE furnace burns gas efficiently for winter months, while the AC side offers 36,000 BTU cooling capacity with 13 SEER efficiency. The reciprocating compressor handles single-stage operation at 74 dB, adequate but not whisper-quiet. The multi-speed blower motor adjusts to 1,600 CFM maximum, allowing better temperature management than fixed-speed designs. Refrigerant flexibility (R410A or R22) aids retrofit compatibility.

Pros & Cons

Pros

96% AFUE furnace efficiency means excellent winter heating performance and lower gas bills
13 SEER cooling rating delivers reasonable AC efficiency for a basic single-stage unit
36,000 BTU cooling capacity handles 3-ton loads appropriately for medium homes
Multi-speed blower motor provides better temperature control than fixed-speed alternatives
10-year warranty with online registration covers parts comprehensively
Upflow configuration works for basements and closet installations
PVC flue compatibility reduces venting complications in modern homes

Cons

Single-stage compressor means less efficient partial-load operation during mild days
13 SEER is now outdated, not eligible for Energy Star qualification
Reciprocating compressor runs louder at 74 dB than scroll alternatives
No variable-speed cooling means higher runtime and electricity use in moderate weather
Price appears to be zero, suggesting incomplete listing or vendor data issue

Who Should Buy

Best For

Homeowners in northern climates replacing 15+ year old furnaces who prioritize heating efficiency and want straightforward, proven technology without premium pricing. Budget-conscious buyers who don't need variable-speed cooling sophistication and live where winter demands dominate cooling needs.

Consider Alternatives If

Homeowners in hot climates seeking maximum AC efficiency, anyone wanting Energy Star certification, or buyers needing quieter operation should look at scroll compressor units with 16+ SEER ratings.

3 Ton 13 SEER 96% AFUE 80,000 BTU Goodman Gas Furn

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Installation

Installation requires 115V single-phase 60Hz electrical service with 19.1 to 30-amp breaker sizing, straightforward for most homes. The upflow configuration fits basements and utility closets efficiently. Suction line uses 7/8-inch piping with 3/8-inch insulation, liquid line 3/8-inch, both standard dimensions. PVC plastic flue venting simplifies exterior termination compared to metal alternatives. Typical job fits standard installation timelines.

Warranty & Reliability

Online Supply provides a 10-year parts warranty with online registration, covering manufacturing defects across both furnace and condenser. This is solid mid-range coverage that protects against major compressor or heat exchanger failures during the critical first decade. Registration is required, so homeowners must retain documentation and complete the process promptly after installation.

Specifications

SKU	LS38783830
Brand/Manufacturer	Online Supply
Cooling BTU	36,000
Heating BTU	80,000
Refrigerant	R410A or R22
Electrical	115 V. 1 Phase 60 Hz
Warranty	10 Years with Online Registration
Decibel Level (dBA)	74
Weight (in lbs)	30.000000
Feature	Spec
Replaces	GSX130362, GSX130363, GSX130365
Energy Star	No
SEER1 (Efficiency)	13
Condenser Stages	Single Stage
Compressor Type	Reciprocating
Liquid Valve Size	3/8"
Suction Valve Size	3/4"
Max Breaker Size	30 amps
Min. Breaker Size	19.1 amps
Tonnage	3.5 Ton
Valve Type	Sweat
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	Plastic / PVC
Furnace Efficiency / AFUE	96%
Blower Motor	Multi Speed
Maximum CFM	1600
Configuration	Upflow / Downflow
Flue Location	Right
Burner Stages	Single
Fuel Type	Gas
Liquid Line	3/8"
Suction Line	7/8"
Style	A-Coil
Suction Line Insulation Thickness	3/8"
Length	30 feet

Frequently Asked Questions

How does 13 SEER compare to modern air conditioners? +

13 SEER is entry-level by today's standards; new units typically rate 16-18 SEER. This unit costs less upfront but runs longer during cooling season, increasing electricity use 20-30% versus newer efficient models. Better for mild climates where AC runs fewer hours annually.

Will this fit my existing ductwork? +

The 1,600 CFM maximum airflow and 3-ton capacity suit standard residential ductwork. Verify your current ductwork supports 3-ton loads and check that return air paths accommodate the 26-inch height, 21-inch width and depth dimensions before ordering.

Why is 96% AFUE important? +

96% AFUE means only 4% of your natural gas escapes as waste, the highest practical efficiency for gas furnaces. You'll recover this equipment cost through lower heating bills within 5-8 years in cold climates, making it excellent long-term value.

Is single-stage cooling a disadvantage? +

Yes, single-stage runs at full capacity whenever cooling is needed, meaning higher electricity use on 70-degree days when partial cooling would suffice. Two-stage units modulate capacity, but cost more. Single-stage works fine in moderate climates with fewer extreme heat days.

What does the 10-year warranty actually cover? +

The warranty covers manufacturing defects in parts, including the compressor and heat exchanger. Labor and refrigerant are typically excluded. Online registration is required; keep proof of purchase and registration documentation for claims.

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