Independent Review · Updated June 2026

4 Ton 13 SEER 97% AFUE 100,000 BTU Goodman Gas Furnace and Air Conditioner System - Downflow

97% AFUE furnace with 13 SEER cooling, modulating gas burner, variable-speed ECM blower.

8.2
IndustrialRank Score
Efficiency
8.5
Reliability
7.8
Value
8.0
Installation
8.5
Warranty
8.0
4 Ton 13 SEER 97% AFUE 100,000 BTU Goodman Gas Furnace and Air Conditioner System - Downflow
Current Price
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// Bottom Line
This ACiQ system excels for homeowners in moderate climates seeking high heating efficiency without paying premium prices for two-stage cooling. The 97% AFUE rating and modulating burner make it ideal for gas-heated homes where winter comfort matters most, while 13 SEER cooling handles summer adequately without excess cost.

Review

The ACiQ 4-ton system bridges affordability and performance in the mid-tier HVAC market. This unit pairs a 100,000 BTU gas furnace with 48,000 BTU cooling capacity in a downflow/horizontal configuration suitable for basements or attics. ACiQ positions this model as a straight replacement for older Goodman units like the GSX130483 series, making it attractive for contractors managing legacy equipment swaps without complete system redesigns.

The 97% AFUE rating places this furnace in the high-efficiency category, recovering nearly all combustion heat instead of venting it away. Cooling delivers 13 SEER1 efficiency with a single-stage reciprocating compressor and R454B refrigerant, meaning lower operating costs than 90-92 AFUE units but moderate cooling expenses compared to two-stage 14-16 SEER systems. The variable-speed ECM blower reaching 2,000 CFM maximum allows precise airflow matching to heating and cooling demands, reducing runtime and noise.

Pros & Cons

Pros

  • 97% AFUE efficiency reduces heating costs significantly compared to 95% AFUE competitors, saving roughly 2% annually on gas bills
  • Modulating gas burner adjusts flame intensity for consistent comfort and lower energy waste versus single-stage burners
  • Variable-speed ECM blower motor reduces fan cycling, lowering electricity consumption and noise during partial-load operation
  • R454B refrigerant meets current EPA environmental standards without ozone depletion potential
  • 10-year warranty with online registration provides solid long-term protection for major components

Cons

  • Single-stage compressor means cooling runs at full capacity or not at all, limiting efficiency on mild days versus two-stage models
  • 13 SEER1 rating is mid-range for modern systems, so cooling bills won't be as low as 14+ SEER alternatives
  • 76 dB noise level is moderately loud for an outdoor unit, which may concern neighbors in close quarters

Who Should Buy

Best For

Homeowners in colder climates who prioritize heating efficiency and run furnaces 6-8 months yearly will see the best ROI from this 97% AFUE system. Contractors installing in modest-income neighborhoods appreciate the balance of quality components and reasonable pricing without premium cooling features.

Consider Alternatives If

Buyers in hot climates where cooling dominates should seek 14+ SEER systems, and those needing ultra-quiet equipment should consider units rated under 72 dB.

4 Ton 13 SEER 97% AFUE 100,000 BTU Goodman Gas Fur
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Installation

Downflow configuration requires ductwork below the unit, typical for basement or attic installations. Suction and liquid lines measure 1 1/8 inches and 3/8 inches respectively with 1/2-inch insulation on the suction line and 50-foot maximum line-set length. Plastic PVC exhaust flue is required. Electrical demands 115V single-phase 60 Hz with breaker sizing between 26.3 and 45 amps, manageable for most residential panels.

Warranty & Reliability

Coverage extends 10 years on compressor, heat exchanger, and coil after online registration, which is standard for mid-market systems. This protects against major failures without labor costs, though homeowners remain responsible for refrigerant, refrigerant recovery, and service calls. Registration is essential to activate the full term.

Specifications

SKUACIQ-48-EHPD-UPG
Brand/ManufacturerACiQ
Cooling BTU48,000
Heating BTU100,000
RefrigerantR454B
Electrical115 V. 1 Phase 60 Hz
Warranty10 Years with Online Registration
Decibel Level (dBA)76
Weight (in lbs)120.000000
FeatureSpec
ReplacesGSX130483, GSX130484, GSX130485
Energy StarYes
SEER1 (Efficiency)13
Condenser StagesSingle Stage
Compressor TypeReciprocating
Liquid Line3/8"
Suction Line1 1/8"
Liquid Valve Size3/8"
Max Breaker Size45 amps
Min. Breaker Size26.3 amps
Tonnage5 Ton
Valve TypeSweat
Height30"
Width21"
Depth21"
ResourcesCAPT Installation Manual CAPT Specifications Sheet Goodman Evaporator Coil Warranty You will need Adobe® Acrobat® Reader to view PDF documents.
Safety InformationPROPOSITION 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.
AHRI Certificate Number7424272
Airflow DirectionDownflow/Horizontal
Exhaust Flue RequirementPlastic / PVC
Product FeaturesRebate Available
Furnace Efficiency / AFUE97%
Blower MotorVariable Speed - ECM
Maximum CFM2000
ConfigurationUpflow / Downflow
Burner StagesModulating
Fuel TypePropane, Natural Gas
StyleA-Coil
Suction Line Insulation Thickness1/2"
Length50 feet

Frequently Asked Questions

What does 97% AFUE actually mean for my heating bills? +
AFUE measures how much fuel energy converts to heat. 97% means only 3% escapes as waste. Compared to an 95% AFUE system, you save roughly 2% on gas consumption annually. Over 20 years, that difference compounds significantly, especially in climates requiring 8,000-plus heating degree days.
Can this unit replace my old Goodman GSX130484? +
Yes, ACiQ lists the GSX130484 as a direct replacement model. However, verify that your ductwork supports downflow configuration and that your electrical panel accommodates 26.3-45 amp breaker requirements. Have a licensed technician confirm compatibility before ordering.
Is 13 SEER cooling good enough for summer comfort? +
13 SEER handles moderate cooling needs adequately but runs at full compressor capacity on hot days, increasing electricity usage. In climates averaging 90+ degrees, 14-16 SEER two-stage systems deliver better part-load efficiency, though they cost more upfront.
How does this compare to the Carrier 25HNH and Lennox XC21? +
ACiQ offers better heating efficiency at lower cost but trails in cooling sophistication. Carrier and Lennox units typically feature two-stage or variable-capacity compressors for superior summer savings. Choose ACiQ if heating dominates your climate, choose competitors if cooling usage is high.
Do I need to register online for the full 10-year warranty? +
Yes, online registration is mandatory to activate the complete 10-year coverage. Without it, warranty defaults to a shorter term. Registration is straightforward and can be completed immediately after installation.

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