4 Ton 14 SEER 92% AFUE 100,000 BTU Goodman Gas Furnace and Air Conditioner System - Upflow Review 2026

// Bottom Line

This Goodman system works well for contractors and homeowners in mixed climates who want reliable performance without premium pricing. The 14 SEER cooling and 92% AFUE heating strike a practical balance for homes where neither cooling nor heating dominates the seasonal load.

Review

This 4-ton Goodman system combines gas heating and air conditioning in a single upflow package, making it a straightforward retrofit or new installation choice for residential applications. Goodman consistently ranks among the most cost-effective brands for contractors seeking no-frills, reliable equipment. The upflow A-coil configuration suits basements and closets with limited space, while the right-side flue accommodates common venting arrangements.

The cooling side delivers 48,000 BTU at 14 SEER using an R410A or R22 scroll compressor in single-stage configuration. The heating side produces 100,000 BTU at 92% AFUE with a single-stage gas burner and multi-speed blower motor rated to 1,600 CFM maximum. This efficiency split favors heating performance, making the system more competitive in winter-dominant climates than in air-conditioning-heavy regions.

Pros & Cons

Pros

14 SEER rating delivers solid cooling efficiency for moderate climates without top-tier cost
92% AFUE furnace efficiency meets modern standards, consuming less gas than older units
Scroll compressor technology reduces vibration and operates at 74 dB, a reasonable noise level
Multi-speed blower motor adapts airflow across varied ductwork configurations
10-year warranty with online registration covers manufacturing defects and parts

Cons

Single-stage compressor and burner limit part-load efficiency during mild weather months
Not Energy Star certified, so this system trails higher-end competitors on seasonal efficiency
5-ton condenser paired with 4-ton nominal capacity creates minor sizing mismatch

Who Should Buy

Best For

Contractors upgrading residential systems in heating-heavy climates and homeowners with moderate budgets who want a dependable, non-exotic solution. This system performs best in zones with cold winters and mild summers, where the furnace carries the workload.

Consider Alternatives If

Homeowners in hot climates relying primarily on cooling should look at higher SEER units; those prioritizing maximum efficiency should consider variable-stage alternatives.

4 Ton 14 SEER 92% AFUE 100,000 BTU Goodman Gas Fur

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Installation

This unit requires 115V single-phase power with breaker sizing between 26.4 and 45 amps, standard for residential installations. The 3/8-inch liquid line and 7/8-inch suction line (with 3/8-inch insulation thickness) connect to matching refrigerant ports. PVC or plastic flue compatibility simplifies venting, and the 34.5-inch height fits most furnace closets and utility spaces without modification.

Warranty & Reliability

Goodman covers this system for 10 years on parts and compressor after online registration, a solid middle-ground warranty. Registration is required to activate coverage, so buyers should complete it immediately after installation. This protection covers manufacturing defects but excludes wear items and improper installation.

Specifications

SKU	LS38783830
Brand/Manufacturer	Online Supply
Cooling BTU	48,000
Heating BTU	100,000
Refrigerant	R410A or R22
Electrical	115 V. 1 Phase 60 Hz
Warranty	10 Years with Online Registration
Decibel Level (dBA)	74
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	45 amps
Min. Breaker Size	26.4 amps
Tonnage	5 Ton
Height	34.5"
Width	21"
Depth	28.75"
Resources	Goodman Brochure Goodman Installation Instructions Goodman Parts Manual Goodman Service Manual Goodman Specifications 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	7/8"
Style	A-Coil
Airflow Direction	Upflow/Horizontal
Exhaust Flue Requirement	Plastic / PVC
Furnace Efficiency / AFUE	92%
Blower Motor	Multi Speed
Maximum CFM	1600
Flue Location	Right
Burner Stages	Single
Fuel Type	Gas
Suction Line Insulation Thickness	3/8"
Length	30 feet

Frequently Asked Questions

Does 14 SEER meet current efficiency standards? +

Yes, 14 SEER exceeds the federal minimum of 13 SEER for most regions. However, it trails premium units at 16+ SEER. The efficiency gap costs more in monthly utility bills over 15 years, especially in cooling-heavy climates where the single-stage compressor cannot modulate capacity.

What does 92% AFUE actually mean for heating bills? +

92% AFUE means 92 cents of every dollar spent on gas reaches your home as heat; 8 cents exits through the flue. Compared to 80% AFUE units common in older homes, this system saves roughly 15% annually on heating fuel, or 300 to 500 dollars per year depending on climate and usage.

Is single-stage operation a problem for homeowners? +

Single-stage operation runs either fully on or off, which raises utility costs during partial-load conditions. Most days in spring and fall don't demand full capacity. Two-stage or variable systems adjust output more gradually, but cost significantly more upfront and require compatible controls.

How does this system compare to Carrier or Lennox equivalents? +

Goodman typically costs 15 to 25 percent less than Carrier or Lennox at comparable SEER and AFUE ratings. You trade brand prestige and marginally faster service support, but core reliability and warranty protection remain solid. Choose Goodman if budget matters; choose Carrier or Lennox if dealer loyalty or features matter.

Does online registration hurt warranty if I don't complete it? +

Yes. Registration is mandatory to activate the 10-year coverage. Without it, you receive only the manufacturer's limited warranty. Most contractors register systems during commissioning, but homeowners should verify registration at purchase time to avoid disputes later.

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