2.5 Ton 14 SEER 80% AFUE 100,000 BTU Goodman Gas Furnace and Air Conditioner System - Upflow Review 2026

// Bottom Line

This 2.5-ton Goodman system works best for homeowners in moderate climates seeking dependable heating and cooling without premium efficiency ratings. The 80% AFUE furnace and 14 SEER air conditioner deliver solid performance at an accessible price point, backed by straightforward installation requirements.

Review

The Goodman 2.5-ton gas furnace and air conditioner system represents a practical entry-level solution for homeowners seeking reliable climate control without premium pricing. Goodman holds strong market share among contractors and rental properties, built on reputation for straightforward service and parts availability. This upflow A-coil configuration suits most residential installations where space permits vertical mounting. The system pairs a 100,000 BTU furnace with 30,000 BTU cooling capacity, handling typical single-family home loads effectively.

Performance specs reveal a competent but conventional approach. The furnace delivers 80% AFUE efficiency with two-stage burners, meaning 20% of fuel energy exits through the flue. The 14 SEER air conditioner achieves reasonable cooling efficiency through a single-stage rotary compressor operating on R410A refrigerant. Variable-speed blower operation up to 2,000 CFM provides flexible airflow for zone balancing. At 72 decibels, outdoor noise levels fall within typical range for single-stage units. Electrical requirements are modest, needing 120V single-phase with 17.1 to 25-amp breaker capacity.

Pros & Cons

Pros

Two-stage burner on furnace reduces short cycling and improves comfort during partial-load operation
Variable-speed blower motor delivers up to 2,000 CFM and adapts to heating and cooling demands
R410A refrigerant meets current environmental standards without retrofit requirements
80% AFUE furnace efficiency is adequate for most climates and keeps installation costs lower than high-efficiency alternatives
10-year warranty with online registration provides reasonable protection on parts

Cons

14 SEER rating trails modern high-efficiency units, resulting in higher cooling costs over system lifetime
80% AFUE furnace wastes more heat than 95%+ AFUE models, meaningfully impacting heating bills in cold climates
Single-stage compressor cycles on and off rather than modulating, reducing efficiency and comfort at partial loads

Who Should Buy

Best For

Homeowners replacing an aging furnace and air conditioner in mild-to-moderate climates where they plan to stay less than 10 years will appreciate the lower upfront cost. Budget-conscious buyers who prioritize affordability over energy optimization should find this system meets their baseline comfort needs.

Consider Alternatives If

Homeowners in cold climates or those planning 15+ year ownership should evaluate 95% AFUE furnaces and 16+ SEER air conditioners, as energy savings will outweigh the higher purchase price within 7-8 years.

2.5 Ton 14 SEER 80% AFUE 100,000 BTU Goodman Gas F

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Installation

This upflow system requires a 34.5-inch height clearance and metal exhaust flue for safe furnace venting. Line sets use standard 3/8-inch liquid line and 3/4-inch suction line with 3/4-inch insulation thickness, stocked by most supply houses. Two-stage burner setup demands proper gas line sizing and testing. Professional installation ensures correct refrigerant charging, electrical connections, and combustion analysis on the furnace.

Warranty & Reliability

Online registration unlocks a 10-year parts warranty, standard for entry-level Goodman equipment. This protects compressor, heat exchanger, and coil failures but typically excludes labor and refrigerant. Coverage depends on proper installation and routine maintenance. Registration through Goodman's website is required within 30 days of activation to validate coverage.

Specifications

SKU	LS38343850
Brand/Manufacturer	Online Supply
Cooling BTU	30,000
Heating BTU	100,000
Refrigerant	R410A
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	34.5"
Width	21"
Depth	28.75"
Resources	Goodman Brochure Goodman Installation Instructions Goodman Parts Manual Goodman Service Manual Goodman Technical Information Goodman User Information Goodman Warranty You will need AdobeÂ® AcrobatÂ® 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.
Configuration	Upflow/Horizontal
Liquid Line	3/8"
Suction Line	3/4"
Style	A-Coil
Airflow Direction	Upflow/Horizontal
Exhaust Flue Requirement	Metal
Furnace Efficiency / AFUE	80%
Blower Motor	Variable Speed
Maximum CFM	2000
Burner Stages	Two
Fuel Type	Propane, Natural Gas
Suction Line Insulation Thickness	3/4"
Length	50 feet

Frequently Asked Questions

Does this 2.5-ton system match my home's heating and cooling needs? +

The 100,000 BTU furnace and 30,000 BTU air conditioner serve approximately 2,500 square feet in moderate climates. Have a licensed contractor perform a Manual J load calculation to confirm sizing, as undersizing causes comfort issues and oversizing wastes money and cycles too frequently.

Will this system work with my existing ductwork and thermostat? +

Most homes built in the last 20 years can accommodate this system, but duct size, insulation, and sealing matter significantly. Existing 24V thermostats integrate directly. Upgrade to a programmable or smart thermostat to maximize the variable-speed blower's efficiency benefits.

How much will this cost to operate monthly versus a high-efficiency system? +

At 80% AFUE, expect approximately 15-20% higher heating costs compared to 95% AFUE models. The 14 SEER rating costs roughly 10-15% more annually than 16+ SEER alternatives. In cold climates, high-efficiency equipment recovers its cost premium within 5-7 years.

How does single-stage cooling compare to variable-capacity alternatives? +

Single-stage compressors run at full power or off, cycling frequently during mild weather. Variable or two-stage compressors modulate output, delivering steadier temperatures and slightly better efficiency. This Goodman's single-stage approach suits stable climates but struggles with spring and fall temperature swings.

What warranty protection does online registration actually provide? +

Ten-year parts coverage on major components like the compressor and heat exchanger requires proof of professional installation. Most exclusions cover labor, refrigerant, and maintenance-related failures. Keep service receipts documenting filter changes and annual maintenance.

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