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 best for homeowners upgrading from older equipment who want solid efficiency without premium pricing. The 92% AFUE furnace and 14 SEER AC deliver real energy savings, though this is a single-stage setup that won't match variable-capacity competitors.

Review

The Goodman 4 Ton 14 SEER gas furnace and air conditioner system represents a pragmatic choice in the mid-tier HVAC market. This upflow configuration delivers 100,000 BTU heating capacity and 48,000 BTU cooling through a compact footprint that fits standard mechanical closets. Online Supply positions this unit as a value-conscious alternative to premium brands while maintaining respectable efficiency ratings. The multi-speed blower and PVC venting flexibility appeal to contractors managing diverse installation scenarios.

Performance-wise, the 92% AFUE furnace efficiency substantially exceeds the 80% baseline found in older equipment, translating to lower monthly heating bills during winter months. The 14 SEER cooling rating performs solidly for standard residential applications, though it operates as a single-stage system without modulation capability. Maximum airflow reaches 2000 CFM through the multi-speed motor, and the unit requires 208/230V single-phase electrical service with breaker sizing between 26.4 and 45 amps depending on configuration. The R410A refrigerant compatibility ensures compliance with current EPA regulations.

Pros & Cons

Pros

92% AFUE furnace exceeds minimum federal standards and cuts heating costs noticeably versus 80% systems
14 SEER cooling rating meets ENERGY STAR thresholds for air conditioning efficiency rebates in many regions
Multi-speed blower motor allows better airflow matching to different load conditions throughout the year
PVC exhaust compatibility simplifies venting in many installations versus metal flue requirements
Compact 30x21x21 inch footprint fits tight mechanical closets and crawlspaces

Cons

Single-stage burner and condenser cannot modulate output, wasting fuel during partial-load operation
74 dB noise level runs louder than variable-speed alternatives, noticeable to homeowners
No ENERGY STAR certification leaves efficiency claims on the table despite 92% AFUE rating

Who Should Buy

Best For

Contractors and homeowners replacing 15+ year old systems in climates with moderate heating and cooling demands. This unit delivers tangible efficiency improvements at a reasonable price point for mid-sized homes without excessive noise sensitivity.

Consider Alternatives If

Buyers seeking premium efficiency or variable-capacity systems should look at higher SEER/AFUE models, and homeowners in very quiet neighborhoods may find the 74 dB output objectionable.

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

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Installation

Installation follows standard practices for upflow furnaces with right-side flue exit. The plastic PVC exhaust venting requirement simplifies routing compared to metal ducts and reduces condensation issues. Technicians need proper refrigerant recovery certification for the R410A charge and should verify electrical service meets the 208/230V 1-phase 60Hz specification. Foundation and clearance requirements follow Goodman's CAPF installation manual, available as a downloadable PDF resource.

Warranty & Reliability

Goodman provides 10 years of parts coverage upon online registration, standard for mid-market furnace brands. This warranty excludes labor costs but covers compressor, heat exchanger, and major component failures. Registration is mandatory to activate coverage, so contractors should complete this step before handing the system to homeowners. Extended warranties through third-party vendors are available but add cost.

Specifications

SKU	LS38783830
Brand/Manufacturer	Online Supply
Cooling BTU	48,000
Heating BTU	100,000
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)	30.000000
Feature	Spec
Airflow Direction	Upflow/Horizontal
Exhaust Flue Requirement	Plastic / PVC
Furnace Efficiency / AFUE	92%
Blower Motor	Multi Speed
Maximum CFM	2000
Configuration	Upflow / Downflow
Flue Location	Right
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.
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
Liquid Line	3/8"
Suction Line	7/8"
Style	A-Coil
Suction Line Insulation Thickness	3/8"
Length	30 feet

Frequently Asked Questions

How much will this furnace save me on heating costs compared to my 80% AFUE unit? +

The 12-percentage-point efficiency gain (92% versus 80%) reduces fuel consumption by approximately 13%, meaning a home spending $1,500 annually on heating could save $195 per year. Actual savings vary by climate, usage patterns, and current equipment condition. Over a 20-year lifespan, this totals roughly $3,900 in fuel savings before inflation adjustments.

Does this system work with my existing ductwork from an older split system? +

Ductwork compatibility depends on your existing system's tonnage and CFM rating. This 4-ton unit with 2000 CFM maximum output works with ductwork sized for similar capacity. Have a technician calculate required CFM based on your home's square footage and climate zone, as undersized ducts reduce efficiency and comfort.

Why is the 14 SEER rating lower than some competing systems at similar prices? +

The single-stage condenser design cannot modulate cooling output, forcing the compressor to run at full capacity until the thermostat triggers shutdown. Variable-capacity systems modulate continuously, achieving higher SEER ratings. You pay less upfront with single-stage cooling, but variable systems reduce energy waste during mild weather and improve comfort control.

Is Goodman a reliable furnace brand, or should I choose a premium manufacturer? +

Goodman holds solid mid-market reliability ratings with typical furnace lifespans of 15-20 years. Premium brands like Carrier offer more sophisticated controls and modulation, but Goodman's straightforward single-stage design reduces points of failure. Your maintenance habits matter more than brand prestige for longevity and dependability.

What does the 10-year warranty actually cover if my furnace breaks? +

Coverage includes parts replacement for the compressor, heat exchanger, and major components after online registration. Labor, refrigerant, and routine maintenance are excluded. Extended warranty options from suppliers add $500-$1,200 but cover labor and refrigerant, providing better cost protection.

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