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

// Bottom Line

This Goodman 4-ton system works well for homeowners upgrading older furnace-only setups or adding cooling to gas-heated homes. The 80% AFUE furnace and 14 SEER air conditioning represent solid mid-range efficiency without premium pricing. Best suited for contractors doing retrofit work in climates with moderate cooling demand.

Review

The Goodman 4-ton 14 SEER furnace and AC system represents the practical middle ground in residential HVAC equipment. Offered through Online Supply with a $0 listed price, this upflow configuration addresses contractors and homeowners looking for straightforward cooling and heating without excessive cost or complexity. The 4-ton tonnage matches standard residential ductwork in most existing installations, making it an accessible upgrade path from legacy single-stage equipment.

Performance metrics show balanced capability across both functions. The furnace delivers 48,000 BTU heating output at 80% AFUE efficiency, while the air conditioning side matches that with 48,000 BTU cooling capacity at 14 SEER. The multi-speed PSC blower motor reaches 2000 CFM maximum, sufficient for typical residential airflow demands. Single-stage burner and scroll compressor design keep maintenance straightforward, though they sacrifice modulation benefits that higher-tier systems provide during partial-load conditions.

Pros & Cons

Pros

14 SEER cooling efficiency qualifies for Energy Star certification and many utility rebates
80% AFUE furnace meets most building codes and offers 10-year warranty with online registration
Multi-speed PSC blower motor with 2000 CFM maximum handles variable load conditions effectively
Scroll compressor design is proven reliable and easier to service than rotary alternatives
Upflow/horizontal configuration works in basements, attics, and crawlspaces with 30-inch height clearance

Cons

80% AFUE is standard efficiency, not high efficiency, meaning higher seasonal heating costs versus 90%+ units
Single-stage burner and compressor cannot modulate output, reducing comfort and efficiency in mild weather
74 dB operating noise is audible in living spaces, especially during cooling cycles

Who Should Buy

Best For

Contractors installing replacement systems in existing homes where ductwork is already sized correctly, and homeowners in moderate climates (not extremely cold regions) who want balanced efficiency without luxury pricing. This system makes sense for retrofit applications where extensive ductwork modifications would push budgets too high.

Consider Alternatives If

Builders constructing new homes requiring high-efficiency systems, homeowners in cold climates needing maximum heating efficiency, or anyone prioritizing whisper-quiet operation should evaluate higher-SEER and higher-AFUE alternatives.

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

Buy at HVACDirect →

Installation

Installation requires standard gas line connections, 208/230V single-phase power at 26.4 to 45 amps, and properly sized refrigerant lines (3/8-inch liquid, 1 1/8-inch suction with 1/2-inch insulation). The 30 x 21 x 21-inch footprint and 48-pound weight fit most standard utility closets and basement locations. Metal exhaust flue from the top exit is mandatory for proper venting and safety compliance.

Warranty & Reliability

Goodman backs this system with a 10-year parts warranty upon online registration, covering compressor, heat exchanger, and major components. This extended coverage protects against early failures common in year two through five. Note that labor costs fall on the homeowner, and warranty validity requires proper installation by certified technicians.

Specifications

SKU	LS381183850
Brand/Manufacturer	Online Supply
Cooling BTU	48,000
Heating BTU	48,000
Refrigerant	R410A or R22
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
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 - 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.
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

Why is this listed as 4-ton but the specs show 5-ton tonnage? +

The product title indicates 4-ton capacity as marketed, but specifications list 5-ton tonnage, which appears to be a data inconsistency. Confirm actual tonnage with Online Supply before purchasing. Oversizing cooling capacity wastes energy and reduces dehumidification effectiveness.

Can I use this with my existing ductwork from an old furnace-only system? +

Only if your original ductwork was sized for 4 to 5 tons of cooling. Most furnace-only homes have undersized return ducts. Have a technician measure static pressure and CFM to verify compatibility before installation to avoid performance issues.

Is 80% AFUE sufficient for northern climates? +

Not optimal for harsh winters. Minnesota, Michigan, and Northeast regions benefit from 90%+ AFUE to offset high heating hours. 80% AFUE works well in moderate zones like mid-Atlantic and upper South where heating demand is moderate.

How does this compare to higher-SEER systems like 16 or 18 SEER? +

14 SEER uses single-stage compressor technology versus variable-speed inverter compressors in 16-18 SEER units. Higher SEER models cost 20-30% more but reduce summer cooling costs by 15-25% and improve humidity control significantly in humid climates.

What does the 10-year warranty actually cover? +

Parts and components only, not labor or refrigerant. This covers compressor failure, heat exchanger cracks, and coil defects. Requires online registration within 60 days of installation to validate coverage.

Affiliate disclosure: IndustrialRank earns a commission on qualifying purchases at no extra cost to you. We only recommend products we have independently reviewed.