3.5 Ton 14 SEER 80% AFUE 80,000 BTU Goodman Gas Furnace and Air Conditioner System - Upflow Review 2026

// Bottom Line

This Goodman system works well for homeowners in moderate climates who want dependable heating and cooling without premium pricing. It's particularly suited for those upgrading from older equipment and willing to accept single-stage cooling for solid year-round performance.

Review

The Goodman 3.5 ton 14 SEER system occupies the practical middle ground of residential HVAC. At $2,071, this upflow-configured unit delivers respectable cooling and heating output without venturing into premium territory. Online Supply positions this as a contractor-friendly option for straightforward replacement jobs and new builds where simplicity and value align with homeowner expectations.

Performance metrics tell a balanced story. The air conditioning side produces 42,000 BTU cooling with a 14 SEER rating, qualifying for rebates in many regions despite lacking official Energy Star status. The furnace side generates 80,000 BTU with 80% AFUE efficiency across two burner stages. A variable-speed blower reaches 2000 CFM maximum, adjusting output instead of running wide-open constantly. These specs deliver competent comfort without the premium efficiency and noise reduction of higher-tier units.

Pros & Cons

Pros

14 SEER cooling efficiency meets Energy Star thresholds for rebates in many states
Two-stage burner on furnace side reduces energy consumption during partial-load heating
Variable-speed blower motor delivers up to 2000 CFM with quieter operation than single-speed alternatives
80% AFUE furnace efficiency is respectable for non-modulating units at this price point
Compatible with both R410A and R22 refrigerants for easier retrofits
10-year warranty on compressor and parts with online registration provides solid coverage

Cons

Single-stage compressor cycles on and off rather than ramping, reducing precision temperature control
73 dB noise level is louder than higher-tier variable-capacity systems, noticeable in quiet neighborhoods
80% AFUE is adequate but not exceptional, meaning higher gas bills than 95%+ AFUE models
No Energy Star certification limits rebate eligibility in some utility programs

Who Should Buy

Best For

Homeowners in mixed climates who need balanced heating and cooling without stretching budgets. Contractors looking for reliable equipment for mid-range residential replacements where customers prioritize dependability over cutting-edge efficiency.

Consider Alternatives If

Anyone in very cold climates should look at higher AFUE furnaces. Buyers seeking whisper-quiet operation or maximum efficiency should explore variable-capacity alternatives.

3.5 Ton 14 SEER 80% AFUE 80,000 BTU Goodman Gas Fu

$2071

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Installation

Installation requires standard 120V single-phase 60 Hz power with breaker sizing between 22 and 35 amps. The A-coil design pairs upflow or downflow configurations. Liquid and suction lines use 3/8-inch and 7/8-inch connections respectively, with 3/8-inch insulation on suction lines. Gas line connections accommodate both natural gas and propane. Metal exhaust flues are required. Most experienced contractors complete setup within standard timeframes.

Warranty & Reliability

Goodman backs this system with 10 years of compressor and parts coverage upon online registration. This is solid mid-market warranty protection, though not as extensive as extended plans some competitors offer. Registration is straightforward and unlocks the full benefit period. Coverage details should be reviewed in the warranty documentation provided.

Specifications

SKU	LS38783830
Brand/Manufacturer	Online Supply
Cooling BTU	42,000
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
Weight (in lbs)	30.000000
Feature	Spec
Energy Star	No
SEER1 (Efficiency)	14
Condenser Stages	Single Stage
Compressor Type	Scroll
Liquid Valve Size	3/8"
Suction Valve Size	7/8"
Max Breaker Size	35 amps
Min. Breaker Size	22 amps
Tonnage	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	3/8"
Length	30 feet

Frequently Asked Questions

How does 14 SEER compare to modern air conditioners? +

14 SEER meets modern minimum efficiency standards and qualifies for many state rebate programs, though newer units reach 16-20 SEER. This unit balances upfront cost against operating expenses, making it ideal for moderate-climate regions where summer cooling demands aren't extreme. Expect reasonable performance without premium efficiency.

Can this system work with existing ductwork from my old unit? +

The upflow A-coil configuration works with standard residential ductwork. Maximum CFM of 2000 and variable-speed blower accommodate typical residential duct systems. Have a technician verify your duct sizing and seal condition, as poor ductwork reduces efficiency gains regardless of equipment quality.

What does two-stage heating actually save in gas bills? +

Two-stage burners run on low fire approximately 80 percent of the heating season in moderate climates, reducing short cycling and gas consumption. Actual savings depend on your climate and insulation but typically range from 5-12 percent versus single-stage operation. Colder regions see smaller percentage savings since high-fire operation runs more frequently.

How does this compare to higher-SEER Lennox or carrier units? +

Units rated 16-18 SEER cost significantly more upfront but operate more quietly and precisely control temperature. Goodman's 14 SEER delivers solid value in moderate climates where peak efficiency gains prove less cost-effective. Choose higher SEER if you're in a hot region or value quieter operation above budget concerns.

What if something breaks after the warranty expires? +

Goodman systems use industry-standard components, so repair parts remain affordable and widely available. Labor costs depend on your local contractor rates, but replacement compressors and motors are reasonably priced. Parts availability is better than boutique brands.

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