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

// Bottom Line

This Goodman 4-ton system works well for budget-conscious homeowners upgrading from older equipment, especially those in moderate climates who want Energy Star compliance without premium pricing. It's not cutting-edge, but it delivers solid performance for the cost.

Review

The Goodman 4-ton 14 SEER system represents the practical middle ground in residential HVAC equipment. Manufactured by Online Supply, this unit delivers solid performance without premium pricing, making it a common choice among contractors installing budget-conscious replacements. The Energy Star certification signals compliance with current efficiency standards, though the spec sheet shows some inconsistencies worth addressing before purchase, particularly regarding refrigerant compatibility claims.

Performance metrics show a 48,000 BTU cooling capacity with 16 SEER rating and a 48,000 BTU heating output at 80% AFUE. The two-stage gas burner and single-stage scroll compressor provide straightforward operation, while the multi-speed blower motor delivers up to 2,000 CFM. At 74 dBA, noise levels remain acceptable for residential installation. The 208-230V, 1-phase electrical requirements suit standard residential wiring, requiring a 26.4 to 45 amp breaker.

Pros & Cons

Pros

Energy Star certified with SEER rating of 16, exceeding baseline efficiency requirements
Two-stage burner and single-stage compressor provide reliable, straightforward operation
Multi-speed blower motor allows better temperature control and reduced runtime noise at 74 dBA
10-year warranty with online registration covers most homeowner concerns
R410A refrigerant compatibility keeps future servicing options open

Cons

80% AFUE furnace efficiency is acceptable but trails high-efficiency models reaching 95%+
4-ton cooling capacity paired with higher 48,000 BTU heating output creates asymmetry for some applications
Single-stage condenser means less efficient part-load operation during mild weather
Spec sheet lists both R410A and R22 compatibility, which is unusual and warrants clarification before purchase

Who Should Buy

Best For

Homeowners replacing 10-15 year old equipment who prioritize upfront affordability and Energy Star qualification without needing top-tier performance. Contractors installing systems for price-sensitive residential customers in stable climates will find this unit practical and straightforward to service.

Consider Alternatives If

Those seeking maximum efficiency savings should look at 95%+ AFUE furnaces and variable-speed compressors, as the operational cost difference over 15 years will outweigh the initial purchase premium.

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

Buy at HVACDirect →

Installation

This downflow/upflow configuration accommodates most residential layouts with a compact 30-inch height and 21-inch square footprint. Installation requires metal exhaust flue venting and standard R410A or R22 refrigerant line sets up to 50 feet. The sweat-style valve connections demand proper brazing skills, so professional installation is recommended. Electrical connection to a dedicated 1-phase 60 Hz circuit completes the setup.

Warranty & Reliability

Goodman provides a 10-year parts warranty upon online registration, covering compressor, heat exchanger, and most internal components. This is competitive for mid-tier equipment but trails extended plans offered by premium manufacturers. Registration is straightforward but essential, as warranty coverage depends on it. Evaporator coil coverage is separately documented.

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.
Exhaust Flue Requirement	Metal
Furnace Efficiency / AFUE	80%
Blower Motor	Multi-Speed
Maximum CFM	2000
Configuration	Upflow / Downflow
Burner Stages	Two
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 does the spec sheet list both R410A and R22 refrigerant compatibility? +

This appears to be a documentation error from the supplier. Modern Goodman systems use R410A exclusively. R22 is being phased out. Contact your installer to confirm your unit's actual refrigerant before purchase, as this affects long-term servicing costs and availability.

Will this system fit in my basement with limited headroom? +

The unit measures 30 inches tall, 21 inches wide, and 21 inches deep. It's relatively compact. The downflow configuration works well for basements, but verify you have adequate clearance around the unit for airflow and future maintenance before ordering.

How does the 80% AFUE furnace compare to high-efficiency models? +

80% AFUE means 20% of fuel energy exits through the flue. High-efficiency models reach 95%+ AFUE. Over 15 years, this difference costs $1,500 to $3,000 more in heating bills depending on climate, though initial cost is significantly lower here.

Is single-stage cooling efficient enough for hot climates? +

Single-stage compressors run at full capacity or off, cycling frequently in mild weather. Two-stage or variable-speed compressors modulate output, reducing cycles and energy use. In hot climates, those options provide 10-15% better cooling efficiency and comfort.

What does the 10-year warranty actually cover? +

With registration, Goodman covers compressor, heat exchanger, and parts for 10 years. Labor is not included. Registration is mandatory and must be completed by the installer or homeowner. Check coverage details with your installer before installation.

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