Goodman 4 Ton 14 SEER 80% 120,000 BTU Furnace & AC System - R410A Upflow Review 2026

// Bottom Line

This Goodman combo system works best for homeowners replacing older equipment in moderate climates where maximum efficiency isn't the top priority. The 80% AFUE furnace and 14 SEER cooling deliver predictable performance at an accessible price point, with straightforward installation suited for experienced HVAC contractors.

Review

The Goodman 4 ton combo system positions itself in the practical middle ground of residential HVAC equipment. This upflow configuration pairs an 80% AFUE furnace with a single-stage R410A air conditioner, designed for straightforward replacement installations in homes where ductwork is already established. Online Supply prices this unit competitively, and the Energy Star certification signals baseline efficiency compliance. The system handles both heating and cooling from one package, simplifying contractor logistics and reducing installation footprint compared to split systems.

Performance specs reveal a utilitarian approach to comfort. The furnace delivers 120,000 BTU heating output across two burner stages, while the cooling side produces 48,000 BTU at 14 SEER efficiency. The multi-speed blower can move up to 2000 CFM, allowing contractors to match airflow to existing ductwork during commissioning. At 74 decibels, noise levels stay reasonable for residential settings. However, the single-stage compressor cannot vary capacity, meaning the system runs at full bore on mild days rather than modulating down, which impacts seasonal efficiency averages.

Pros & Cons

Pros

Two-stage burner on furnace delivers better temperature control than single-stage units and reduces short-cycling
14 SEER cooling efficiency meets Energy Star standards, translating to meaningful savings on summer utility bills
Multi-speed blower motor optimizes airflow for both heating and cooling modes across the 2000 CFM range
Scroll compressor design is proven reliable with minimal moving parts and established service parts availability
80% AFUE furnace rating is respectable for non-condensing units and handles 120,000 BTU heating output effectively
10-year warranty with online registration provides reasonable peace of mind on sealed components

Cons

14 SEER rating lags behind modern 16-20 SEER systems, limiting long-term energy savings in high-cooling climates
80% AFUE furnace wastes 20% of fuel energy compared to 95%+ condensing models, costing more annually in cold regions
Single-stage compressor cannot modulate cooling capacity, reducing efficiency during mild weather and increasing wear cycles
Spec sheet shows conflicting tonnage data (listed as both 4 ton and 5 ton), raising questions about accuracy

Who Should Buy

Best For

Homeowners in moderate climates replacing 15+ year old systems who value reliability over cutting-edge efficiency gains. Contractors seeking proven equipment for cost-conscious customers where the heating load justifies the 120,000 BTU output and space constraints favor upflow A-coil design.

Consider Alternatives If

Anyone in severe cold climates should look at 95% AFUE condensing furnaces, and customers in hot, humid regions should consider 16+ SEER variable-capacity systems for better year-round economics.

Goodman 4 Ton 14 SEER 80% 120,000 BTU Furnace & AC

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Installation

Installation is straightforward for licensed contractors familiar with furnace and AC work. The unit requires 120V single-phase 60Hz power with a breaker sized between 26.4 and 45 amps, accommodating most residential panels without upgrades. Refrigerant lines use standard 3/8 inch liquid and 1 1/8 inch suction connections with 1/2 inch insulation supplied (50 feet length). Metal exhaust flue is mandatory. The A-coil design and upflow orientation fit typical attic or basement installations without major modifications.

Warranty & Reliability

Goodman provides 10 years of parts warranty when registered online, covering compressor, heat exchanger, and sealed components. This is middle-tier protection, shorter than some competitors offering 10/10 or 10/5 splits but reasonable for the price point. Registration is straightforward and strongly recommended. Labor is not covered, so budget separately for service calls beyond the parts guarantee period.

Specifications

SKU	LS381183850
Brand/Manufacturer	Online Supply
Cooling BTU	48,000
Heating BTU	120,000
Refrigerant	R410A or R22
Electrical	120 V. 1 Phase 60 Hz
Warranty	10 Years with Online Registration
Decibel Level (dBA)	74
Weight (in lbs)	48.000000
Feature	Spec
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
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.
Airflow Direction	Upflow/Horizontal
Exhaust Flue Requirement	Metal
Furnace Efficiency / AFUE	80%
Blower Motor	Multi-Speed
Maximum CFM	2000
Configuration	Upflow / Downflow
Burner Stages	Two
Fuel Type	Gas
Liquid Line	3/8"
Suction Line	1 1/8"
Style	A-Coil
Suction Line Insulation Thickness	1/2"
Length	50 feet

Frequently Asked Questions

Why does the spec sheet list both 4 ton and 5 ton tonnage? +

This appears to be a data entry error on the supplier's listing. The cooling capacity of 48,000 BTU equals 4 tons exactly (12,000 BTU per ton). The 5 ton reference is likely misfiled from a different SKU. Confirm tonnage with the manufacturer documentation before ordering to ensure your ductwork matches.

Can this system work with my existing R22 refrigerant lines? +

The specs indicate R410A or R22 compatibility, but this typically means the compressor accepts either refrigerant, not that existing R22 piping is ideal. R410A systems use different oil and pressures than R22. Have your contractor verify whether retrofitting to R410A requires new copper lines or if flushing existing lines is acceptable per EPA guidelines.

How does 14 SEER compare to newer systems in terms of cooling costs? +

14 SEER is roughly 20-25% less efficient than 18 SEER units and 35-40% behind 20 SEER models. In hot climates running AC six months yearly, this gap translates to $200-400 in extra annual electricity costs. Over 15 years, that's real money, so calculate your payback period before choosing this over higher-efficiency alternatives.

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

80% AFUE is functional but not optimal for regions with extended heating seasons. You lose 20% of fuel energy to exhaust losses. Condensing furnaces at 95% AFUE save roughly $150-250 annually in natural gas bills in cold climates. If you heat more than three months yearly, the efficiency gap justifies the higher upfront cost over 15-year equipment life.

What does the 10-year warranty actually cover if something fails? +

Goodman covers sealed components like the compressor and heat exchanger at no parts cost for 10 years with registration. Repairs, service calls, and refrigerant recharges are your expense. If the compressor fails in year 8, you get a free replacement part but pay labor and diagnostics separately. Always read the specific warranty document before relying on this protection.

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