2.5 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 contractors and homeowners replacing aging equipment in moderate climates where 80% AFUE and 14 SEER performance meet budget constraints. At $2,575, you're getting solid efficiency and proven hardware without paying premium prices for high-efficiency models.

Review

Goodman's 2.5 ton gas furnace and air conditioner system is a workhorse combination aimed at contractors and homeowners seeking reliable performance without premium pricing. Manufactured by Online Supply under SKU LS38343850, this upflow unit pairs an 80,000 BTU furnace with a 30,000 BTU condenser to handle moderate heating and cooling loads. It's the kind of system you see on job sites regularly, proven through thousands of installations across North America.

The furnace delivers 80% AFUE efficiency with a two-stage burner, meaningfully better than 78% single-stage alternatives. The AC side rates 14 SEER using a rotary compressor and single-stage condenser, hitting mid-market cooling efficiency. The variable-speed blower motor reaches 2,000 CFM maximum airflow, allowing better comfort control than fixed-speed designs. It runs at 72 dB, which is typical for this class but worth noting if noise matters to you.

Pros & Cons

Pros

Two-stage burner delivers 80,000 BTU heating with 80% AFUE efficiency, reducing fuel costs versus single-stage units
14 SEER cooling rating on 2.5 tons provides solid performance in most climates without Energy Star premium pricing
Variable-speed blower motor adjusts airflow up to 2,000 CFM, improving comfort and reducing runtime noise compared to single-speed designs
Upflow/downflow configuration fits most residential installations without costly modifications
10-year warranty with online registration covers parts, giving contractors and homeowners peace of mind

Cons

80% AFUE is standard, not high-efficiency, so gas bills won't match 95%+ AFUE systems over the system lifetime
Single-stage condenser limits part-load cooling efficiency on mild days, wasting energy during shoulder seasons
72 dB noise level runs audible during operation, noticeably louder than variable-capacity competitor units
Not Energy Star certified, excluding this system from some utility rebate programs

Who Should Buy

Best For

Budget-conscious homeowners replacing 15+ year old systems, and HVAC contractors needing dependable Goodman equipment for mid-range residential jobs. This system balances genuine efficiency gains over old units with affordability.

Consider Alternatives If

Anyone prioritizing minimal energy use should look at 95%+ AFUE furnaces and 16+ SEER AC units, even at higher upfront cost.

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

$2575

Buy at HVACDirect →

Installation

Installation requires a metal exhaust flue, standard 120V single-phase 60Hz electrical with 17.1 to 25 amp breaker capacity, and R410A or R22 refrigerant lines using 3/8 inch liquid line and 3/4 inch suction line with 3/4 inch insulation over 50 feet maximum. The A-coil upflow design fits most existing ductwork with minimal modification.

Warranty & Reliability

Goodman backs this system with a 10-year parts warranty when you register online, covering both furnace and condenser. This is standard across their product line and meaningful for contractors handling service calls within the warranty period. Registration takes minutes through Goodman's website.

Specifications

SKU	LS38343850
Brand/Manufacturer	Online Supply
Cooling BTU	30,000
Heating BTU	80,000
Refrigerant	R410A or R22
Electrical	120 V. 1 Phase 60 Hz
Warranty	10 Years with Online Registration
Decibel Level (dBA)	72
Weight (in lbs)	22.000000
Feature	Spec
Energy Star	No
SEER1 (Efficiency)	14
Condenser Stages	Single Stage
Compressor Type	Rotary
Liquid Valve Size	3/8"
Suction Valve Size	3/4"
Max Breaker Size	25 amps
Min. Breaker Size	17.1 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	3/4"
Style	A-Coil
Suction Line Insulation Thickness	3/4"
Length	50 feet

Frequently Asked Questions

How does 80% AFUE compare to high-efficiency furnaces on monthly gas bills? +

An 80% AFUE furnace converts 80 cents of every heating dollar to usable heat versus 95%+ models converting 95 cents. Over a typical heating season, you'll spend 15-20% more on gas than with 95% AFUE equipment. For a $1,200 annual heating bill, expect roughly $180-240 higher costs annually.

Can this unit handle extreme climates or just moderate zones? +

The 80,000 BTU output works well in HVAC zones 4-6 (moderate to cold). In zone 7 or colder climates, you may need auxiliary electric heat or oversized ductwork. Consult local load calculations before committing to this tonnage.

Why is the compressor single-stage if the burner is two-stage? +

Single-stage compressors run full capacity or off, simpler and cheaper than variable units but less efficient on partial loads. Two-stage burners reduce short cycling during mild weather, while AC still cycles on-off. This design balances cost with meaningful heating efficiency gains.

How does 14 SEER compare to competitors at this price point? +

14 SEER is competitive for entry-level systems. Mid-tier units often hit 16-18 SEER with variable-capacity compressors costing $3,500-4,500 installed. This Goodman prioritizes affordability over peak efficiency, suitable for budget-conscious buyers.

Does online registration really matter for the 10-year warranty? +

Yes. Without registration, Goodman limits warranty to 5 years parts. Registration is free and takes 5 minutes online. Always register immediately after installation to unlock full coverage.

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