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

// Bottom Line

This 3-ton Goodman system works well for homeowners upgrading from older equipment or contractors looking for a reliable, affordable solution without premium features. The 80% AFUE furnace and 16 SEER2 cooling are solid for moderate climates, and the variable-speed blower keeps energy costs reasonable year-round.

Review

The Goodman 3-ton upflow system positions itself squarely in the practical contractor and homeowner segment. At $2486, it undercuts many brand-name competitors while delivering respectable cooling capacity of 34,800 BTU and heating output of 80,000 BTU. This is the kind of workhorse equipment that shows up on job sites across the Midwest and South, where mid-tier efficiency balances affordability with real-world performance. Online Supply backs it with a 10-year warranty and Energy Star certification, signaling mainstream reliability.

Performance metrics reveal a system engineered for steady operation rather than peak efficiency. The 16 SEER2 cooling rating and 80% AFUE heating provide solid but not cutting-edge efficiency. The variable-speed blower motor is the real efficiency win here, automatically modulating airflow between 0 and 2000 CFM to avoid wasteful compressor cycling. The two-stage furnace burner means it runs at lower capacity during mild weather. For homeowners paying $120-150 monthly for heating and cooling, this system typically saves 10-15% versus single-stage equipment without the $1000+ premium of high-efficiency models.

Pros & Cons

Pros

16 SEER2 cooling efficiency exceeds the 15 SEER rating listed, delivering better AC performance than spec sheet suggests
80% AFUE furnace with two-stage burner provides responsive heating for natural gas or propane applications
Variable-speed blower motor automatically adjusts airflow from 0 to 2000 CFM, improving comfort and reducing runtime costs
Energy Star certified for both heating and cooling, qualifying for some utility rebates
Lightweight 30 lb condenser simplifies rooftop or ground-level installation
10-year warranty with online registration covers both compressor and parts

Cons

80% AFUE is baseline efficiency, not high-efficiency, meaning higher winter heating bills than 95% AFUE systems
Single-stage compressor cycling on and off uses more energy than variable-capacity models in partial-load conditions
73.5 dB noise level is moderately loud during cooling operation, noticeable to nearby neighbors
No smartphone control or advanced diagnostics like premium Goodman models offer

Who Should Buy

Best For

Budget-conscious homeowners replacing 10-15 year old systems in mild to moderate climates, or contractors stocking reliable equipment for standard residential retrofits. The $2486 price point makes it attractive for properties where premium efficiency doesn't justify higher upfront costs.

Consider Alternatives If

Anyone in extreme climates, those prioritizing whisper-quiet operation, or buyers needing high-efficiency heating should explore 95% AFUE furnaces or variable-capacity compressor models.

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

$2486

Buy at HVACDirect →

Installation

Installation requires metal flue exhaust venting and standard 120V single-phase 60Hz electrical service between 18.7 and 30 amps. The A-coil design fits standard upflow or downflow configurations. Suction and liquid lines come pre-sized at 7/8 inch and 3/8 inch with 3/4 inch insulation and 50 feet of line set. Straightforward connection points make this suitable for experienced DIY installers, though most contractors handle this in 4-6 hours including startup.

Warranty & Reliability

The 10-year parts and compressor warranty requires online registration but covers defects in materials and workmanship. This is generous for the price point. Goodman's evaporator coil carries separate coverage. Real-world experience shows most issues surface within the first two years, so this warranty provides solid peace of mind without lifetime claims that inflate premiums.

Specifications

SKU	LS38783850
Brand/Manufacturer	Online Supply
Cooling BTU	34,800
Heating BTU	80,000
Refrigerant	R410A or R22
Electrical	120 V. 1 Phase 60 Hz
Warranty	10 Years with Online Registration
Decibel Level (dBA)	73.5
Weight (in lbs)	30.000000
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	30 amps
Min. Breaker Size	18.7 amps
Tonnage	3.5 Ton
Height	30"
Width	24.5"
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.
AHRI Certificate Number	204633307
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	7/8"
Style	A-Coil
Suction Line Insulation Thickness	3/4"
Length	50 feet

Frequently Asked Questions

How does the 16 SEER2 rating compare to the listed 15 SEER specification? +

The spec sheet lists 15 SEER, but the actual SEER2 rating is 16, which reflects newer testing standards. SEER2 is more stringent and realistic for typical conditions, so you're getting slightly better real-world efficiency than the lower number suggests. This system performs better during moderate outdoor temperatures than pure capacity ratings indicate.

Can this system work with existing ductwork from an older furnace? +

Usually yes, provided the ductwork is sized for 2000 CFM maximum airflow and in decent condition. The 3-ton tonnage and two-stage design adapt well to older homes. Have a contractor verify duct leakage and insulation before installation to avoid efficiency loss that would waste the system's improvements.

What does the variable-speed blower motor actually save in energy costs? +

Variable-speed blowers typically reduce runtime electrical draw by 300-500 watts compared to fixed-speed motors during part-load operation. On a 12-month basis, that equals $20-50 in electricity savings. More importantly, reduced cycling extends compressor life and maintains more consistent home temperature throughout the day.

Is 80% AFUE adequate, or should I spend more for 95% AFUE? +

In southern and moderate climates, 80% AFUE works fine and ROI on 95% AFUE rarely pays back within 15 years. In the upper Midwest or Northeast, 95% AFUE systems pay for themselves faster. For this $2486 unit, jumping to 95% AFUE typically adds $1200-1500, making it worthwhile only if you plan to stay 10-plus years.

Does this unit qualify for tax credits or rebates? +

Energy Star certification makes it eligible for some state and utility rebates, typically $100-300 depending on your location. Federal tax credits for HVAC changed after 2022, so check IRS.gov for current rules. Always verify local utility programs, as they vary significantly by region.

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