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 best for budget-conscious homeowners in moderate climates who want dependable cooling and heating without premium pricing. The 14 SEER rating delivers respectable efficiency for standard residential applications, and the variable-speed blower keeps utility costs reasonable year-round.

Review

The Goodman 3.5 Ton gas furnace and air conditioner system hits the sweet spot for contractors and homeowners seeking reliable performance without premium pricing. This upflow-configured unit combines a 42,000 BTU cooling capacity with 80,000 BTU of heating output, making it suitable for typical three to four bedroom homes. At $2,071, it undercuts many brand-name alternatives while maintaining Goodman's reputation for straightforward engineering and field serviceability.

The system delivers 14 SEER cooling efficiency with a single-stage scroll compressor running on R410A or R22 refrigerant. On the heating side, the 80% AFUE two-stage furnace with variable-speed blower motor handles both natural gas and propane. Maximum airflow reaches 2,000 CFM, and the unit accepts 120V single-phase power at 22 to 35 amp breaker sizing. These specs indicate competent mid-tier performance rather than top-shelf efficiency, making it realistic for customers prioritizing value over cutting-edge capability.

Pros & Cons

Pros

14 SEER rating exceeds minimum federal standards and qualifies for many utility rebates
80% AFUE furnace with two-stage burner provides efficient heating in moderate climates
Variable-speed blower motor adjusts to actual demand, improving comfort and reducing energy waste
Scroll compressor is proven reliable technology with minimal maintenance needs
Dual fuel capability supports natural gas or propane without system modifications

Cons

80% AFUE is acceptable but not cutting-edge, high-efficiency models reach 95%+ AFUE
Single-stage compressor cannot modulate cooling capacity, cycling on and off rather than ramping up or down
Not ENERGY STAR certified, missing qualification for premium rebate programs
73 dB noise level is louder than many competitors, may be noticeable during operation

Who Should Buy

Best For

This system suits homeowners replacing aging equipment in areas without extreme temperature swings, plus contractors building rental properties or managing cost-conscious customer budgets. The straightforward technology and competitive $2,071 price make it practical for middle-market applications.

Consider Alternatives If

Skip this unit if you live in a very hot climate needing maximum cooling efficiency, have budget for 16+ SEER systems, or prioritize whisper-quiet operation.

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

$2071

Buy at HVACDirect →

Installation

Installation favors experienced HVAC technicians, though the upflow configuration suits standard indoor closet placement. Suction line insulation comes pre-applied at 3/8 inch thickness, reducing field preparation. You'll need metal ductwork for exhaust flue, standard copper refrigerant lines sized at 3/8 inch liquid and 7/8 inch suction, and proper electrical wiring for 120V operation. Most jobs complete within one day for straightforward applications.

Warranty & Reliability

Goodman covers this system for 10 years parts and labor with online registration, a solid middle-ground warranty. The A-coil evaporator includes separate extended coverage. While competitive with mid-tier units, premium brands often match or exceed this protection. Registration is straightforward and recommended to activate full coverage.

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

What cooling output can I expect from this 3.5 ton unit? +

The system provides 42,000 BTU of cooling capacity with a 14 SEER rating. This translates to approximately 1 ton of cooling per 400-500 square feet in temperate climates, assuming average insulation. Single-stage operation means it runs full capacity or off, without partial modulation.

Does this furnace work with my existing ductwork? +

The upflow configuration works with standard residential ductwork sized for 2,000 CFM maximum airflow. You'll need metal exhaust flue, and the variable-speed blower adapts to your home's static pressure. Have an HVAC tech evaluate your duct system before installation.

How does 80% AFUE compare to newer furnaces? +

80% AFUE is solid baseline efficiency, converting four of every five dollars of fuel to heat. Newer high-efficiency units reach 95% AFUE but cost significantly more. For moderate climates, 80% AFUE delivers adequate performance with reasonable payback on the lower purchase price.

Should I buy this or wait for a higher SEER unit? +

Choose this if you need immediate replacement and budget is tight. 14 SEER saves roughly 30% on cooling versus minimum standards. If you can wait and want premium efficiency, 16-18 SEER units offer lower operating costs, though they require larger upfront investment.

What does the 10-year warranty actually cover? +

The warranty covers parts and labor defects when registered online. It's standard coverage but less generous than some premium brands offering 12-15 years. Check the specific evaporator coil terms separately, as they sometimes have extended protection.

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