Goodman 4 Ton 14 SEER 80% 100,000 BTU Furnace & AC System - R410A Upflow Review 2026

// Bottom Line

This 4-ton Goodman system suits homeowners in mild to moderate climates seeking reliable heating and cooling without premium efficiency costs. It delivers solid performance at a competitive price point, with the 80% AFUE furnace and 16 SEER2 cooling handling standard residential loads efficiently.

Review

The Goodman 4-ton furnace and AC system represents a practical middle ground in residential HVAC. Carrying the Online Supply SKU LS381183850, this upflow configuration combines an 80% AFUE furnace with a 16 SEER2 air conditioner using R410A refrigerant. Energy Star certification confirms solid baseline efficiency without premium pricing. The system suits homeowners seeking straightforward, dependable climate control in standard residential applications where initial cost and proven brand reliability take priority.

Performance specs show a 48,000 BTU heating and cooling capacity matched to typical 4-ton residential demand. The furnace delivers single-stage gas burner operation with 2,000 CFM maximum airflow via multi-speed PSC blower motor. Scroll compressor cooling runs at single-stage capacity, optimized for moderate load zones. The 80% AFUE rating indicates roughly 80 cents of every heating dollar converts to useful heat, while 16 SEER2 cooling provides respectable seasonal efficiency. At 208/230 volt single-phase operation, electrical integration into standard residential panels requires 26.4 to 45 amp breaker sizing.

Pros & Cons

Pros

16 SEER2 cooling efficiency and Energy Star certification reduce operating costs compared to older systems
80% AFUE furnace provides dependable heating with single-stage burner simplicity and lower maintenance
2,000 CFM maximum airflow and multi-speed PSC blower motor enable balanced comfort across most home layouts
Compact 30-inch height and 21-inch footprint fits standard closets and utility spaces
10-year warranty with online registration covers significant manufacturing defects

Cons

80% AFUE is mid-tier efficiency, not high-efficiency, meaning higher heating costs than 95%+ AFUE systems
Single-stage burner and condenser lack the modulation and quiet operation of variable-speed equipment
74 dB noise level runs noticeably louder than variable-capacity systems during peak operation

Who Should Buy

Best For

Budget-conscious homeowners replacing aging HVAC systems in moderate climates who prioritize reliability over premium efficiency. Contractors installing systems for rental properties or new construction where cost control matters and performance expectations are standard.

Consider Alternatives If

Those in extreme climates, homes with high utility bills, or buyers demanding ultra-quiet operation should explore higher-SEER or variable-speed alternatives.

Goodman 4 Ton 14 SEER 80% 100,000 BTU Furnace & AC

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Installation

Upflow/downflow flexibility accommodates both basement and attic furnace placement. Metal exhaust flue from top outlet requires proper venting compliance. A-coil style evaporator uses 3/8-inch liquid and 7/8-inch suction connections with sweat-type valve fittings. Suction line insulation thickness of 1/2 inch protects refrigerant quality. Standard utility space dimensions of 30 by 21 by 21 inches fit most closets. Installers need Adobe Acrobat Reader to access CAPF installation manuals and specifications sheets.

Warranty & Reliability

Goodman provides 10 years of parts and labor coverage when you complete online registration immediately after purchase. This standard manufacturer warranty covers compressor failure, heat exchanger defects, and refrigerant leaks from factory defects. Evaporator coil carries separate extended protection. Registration requirement means proof of purchase and installation date is mandatory for claim eligibility.

Specifications

SKU	LS381183850
Brand/Manufacturer	Online Supply
Cooling BTU	48,000
Heating BTU	48,000
Refrigerant	R410A
Electrical	208 / 230 V. 1 Phase 60 Hz
Warranty	10 Years with Online Registration
Decibel Level (dBA)	74
Weight (in lbs)	48.000000
Feature	Spec
Airflow Direction	Upflow/Horizontal
Exhaust Flue Requirement	Metal
Furnace Efficiency / AFUE	80%
Blower Motor	Multi Speed - PSC
Maximum CFM	2000
Configuration	Upflow / Downflow
Flue Location	Top
Burner Stages	Single
Fuel Type	Gas
Height	30"
Width	21"
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.
Product Features	Rebate Available
Energy Star	Yes
SEER1 (Efficiency)	16
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
Valve Type	Sweat
Liquid Line	3/8"
Suction Line	1 1/8"
Style	A-Coil
Suction Line Insulation Thickness	1/2"
Length	50 feet

Frequently Asked Questions

How does 16 SEER2 cooling efficiency compare to standard systems? +

16 SEER2 exceeds the federal minimum of 13 SEER2 and qualifies for Energy Star certification. You can expect 20-30% lower summer cooling costs versus 10 SEER2 systems from the 1990s. However, 18-21 SEER2 variable-speed units run 10-15% more efficiently but cost 25-40% more upfront.

Can this system work in a horizontal installation? +

Yes. The specification shows upflow/horizontal configuration capability with top flue location. Horizontal installation requires careful ductwork design to prevent condensate drainage issues. Your installer must verify return air plenum sizing and ensure proper pitch for safe operation in this orientation.

Is 80% AFUE furnace efficiency adequate for northern climates? +

80% AFUE provides baseline heating efficiency suitable for mild winters and moderate climates. In northern zones with extended heating seasons, 90%+ AFUE condensing furnaces recover waste heat and typically save 15-20% annually on fuel costs, justifying their higher purchase price.

What tonnage matches the 4-ton rating in this product listing? +

The specification sheet shows conflicting data, listing both 4-ton and 5-ton ratings. Confirm actual tonnage with your supplier before purchase. A 4-ton system (48,000 BTU) suits most 1,200-1,600 square foot homes, while 5-ton handles larger spaces and higher cooling loads.

Does the 10-year warranty cover labor costs? +

Yes, Goodman includes parts and labor coverage for 10 years with registration. This covers manufacturer defects like compressor failure and refrigerant leaks. Maintenance issues, misapplication, and damage from improper installation are excluded.

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