4 Ton 13 SEER 96% AFUE 100,000 BTU Goodman Gas Furnace and Air Conditioner System - Downflow Review 2026

// Bottom Line

This 4-ton combo system works best for homeowners replacing older Goodman units or contractors seeking a balanced efficiency upgrade without premium pricing. The 96% AFUE furnace and 13 SEER air conditioner deliver solid year-round savings, making it ideal for moderate climates where both heating and cooling run regularly.

Review

The ACiQ 4-ton combo system represents a straightforward efficiency upgrade for homeowners running older Goodman equipment. This downflow A-coil configuration pairs a 96% AFUE furnace with a 13 SEER air conditioner, hitting the sweet spot between performance and affordability. The unit replaces legacy Goodman models GSX130483, GSX130484, and GSX130485, making it a drop-in retrofit for existing installations without major redesign work.

Performance-wise, the numbers tell a compelling story. The furnace delivers 100,000 BTU heating output using either natural gas or propane, while the air conditioner produces 48,000 BTU cooling capacity. Its variable-speed ECM blower motor reaches 2,000 CFM maximum and maintains consistent airflow without the energy penalties of fixed-speed alternatives. The two-stage burner improves efficiency by running at reduced capacity during mild weather, avoiding the full-fire cycling that wastes fuel in traditional systems.

Pros & Cons

Pros

96% AFUE furnace efficiency means minimal energy waste during heating season, translating to lower gas bills
13 SEER cooling efficiency qualifies as Energy Star certified, reducing summer cooling costs measurably
Variable-speed ECM blower motor optimizes airflow and reduces electricity consumption compared to single-speed models
Two-stage burner allows furnace to run at partial capacity during mild weather, improving comfort and efficiency
10-year warranty with online registration provides solid long-term protection on compressor and parts
R454B refrigerant is low-GWP, meeting current environmental standards without performance compromise

Cons

76 dB noise level runs slightly louder than premium models, potentially noticeable in open-concept homes
Single-stage air conditioner compressor means cooling output stays fixed rather than modulating with demand
Price listed as $0 prevents honest value assessment against comparable 13 SEER units

Who Should Buy

Best For

Homeowners replacing failing Goodman GSX130483-485 units will appreciate the direct compatibility and retrofit simplicity. Contractors working in moderate climates where heating and cooling are both important will find this downflow A-coil configuration reliable for standard residential applications.

Consider Alternatives If

Buyers seeking ultra-quiet operation or variable-capacity cooling should look at dual-stage compressor systems, which cost more but deliver superior modulation and reduced noise levels.

4 Ton 13 SEER 96% AFUE 100,000 BTU Goodman Gas Fur

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Installation

Installation complexity is moderate. This downflow unit requires 115V single-phase 60 Hz power with a 26.3 to 45-amp breaker depending on load. Connections use standard 3/8 inch liquid line and 1 1/8 inch suction line with sweat-type valves. The PVC exhaust flue requirement simplifies venting in many homes. Dimensions run 34.5 inches tall, 21 inches wide, and 28.75 inches deep, fitting most residential closets or utility spaces.

Warranty & Reliability

Goodman backs this unit with a 10-year parts and compressor warranty when registered online at purchase. Registration is straightforward and takes five minutes, unlocking full coverage. This extended warranty protects against unexpected compressor failure, which typically costs $1,200 to $1,800 to replace, making registration financially smart for any buyer.

Specifications

SKU	ACIQ-48-EHPD-UPG
Brand/Manufacturer	ACiQ
Cooling BTU	48,000
Heating BTU	100,000
Refrigerant	R454B
Electrical	115 V. 1 Phase 60 Hz
Warranty	10 Years with Online Registration
Decibel Level (dBA)	76
Weight (in lbs)	120.000000
Feature	Spec
Replaces	GSX130483, GSX130484, GSX130485
Energy Star	Yes
SEER1 (Efficiency)	13
Condenser Stages	Single Stage
Compressor Type	Reciprocating
Liquid Line	3/8"
Suction Line	1 1/8"
Liquid Valve Size	3/8"
Max Breaker Size	45 amps
Min. Breaker Size	26.3 amps
Tonnage	5 Ton
Valve Type	Sweat
Height	34.5"
Width	21"
Depth	28.75"
Resources	Goodman Brochure Goodman Installation Instructions Goodman Parts Manual Goodman Service Manual Goodman Specifications Goodman Technical Information Goodman User Information Goodman Warranty You will need AdobeÂ® AcrobatÂ® 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.
Configuration	Downflow/Horizontal
Style	A-Coil
AHRI Certificate Number	7368844
Airflow Direction	Downflow/Horizontal
Exhaust Flue Requirement	Plastic / PVC
Product Features	Rebate Available
Furnace Efficiency / AFUE	96%
Blower Motor	Variable Speed - ECM
Maximum CFM	2000
Burner Stages	Two
Fuel Type	Propane, Natural Gas
Suction Line Insulation Thickness	1/2"
Length	50 feet

Frequently Asked Questions

What's the real-world difference between 96% AFUE and standard 80% AFUE furnaces? +

A 96% AFUE furnace converts 96 cents of every fuel dollar into usable heat, versus 80 cents for older units. On a typical $1,200 annual heating bill, upgrading saves approximately $180 to $240 yearly. Over a 15-year furnace lifespan, that approaches $3,000 in cumulative savings before accounting for rising energy costs.

Will this unit retrofit into my existing ductwork and electrical panel? +

Most likely yes if you're replacing a comparable Goodman unit. The downflow A-coil configuration matches standard residential installations. Verify your breaker panel supports 26.3 to 45 amps at 115V single-phase. Your HVAC contractor should confirm flue venting requirements during the site survey before ordering.

How does 13 SEER compare to newer 16 or 18 SEER models? +

13 SEER delivers solid cooling efficiency but lags premium units by 20 to 30 percent cooling consumption. Higher SEER models cost significantly more upfront. This unit makes sense if you're budget-conscious or live in moderate climates where cooling runs 4 to 5 months annually rather than year-round.

Can I use this system with a heat pump for supplemental heating instead of gas? +

No, this is a gas furnace and air conditioner combo designed for gas or propane heating only. If you want dual heating sources, you'll need a separate heat pump system installed alongside the AC, which requires additional electrical work and ductwork modifications.

Does registering the warranty void anything or create hidden obligations? +

Registration unlocks the full 10-year coverage at no cost and creates no obligations. Skip registration, and you drop to a standard 5-year warranty. Keep your proof of purchase and registration confirmation for claims.

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