Independent Review · Updated June 2026

3 Ton 13 SEER 97% AFUE 80,000 BTU Goodman Gas Furnace and Air Conditioner System - Downflow

Budget-friendly 3-ton system with solid 97% AFUE and 13 SEER efficiency

8.2
IndustrialRank Score
Efficiency
8.5
Reliability
7.8
Value
8.0
Installation
8.5
Warranty
8.0
3 Ton 13 SEER 97% AFUE 80,000 BTU Goodman Gas Furnace and Air Conditioner System - Downflow
Current Price
$643
Check Price at HVACDirect → Shop Now at HVACDirect
Authorized dealer · Full manufacturer warranty
// Bottom Line
This ACiQ system is ideal for homeowners replacing older Goodman units or contractors needing an affordable entry-level setup for modest-sized homes. At $643, you're getting solid heating efficiency (97% AFUE) and respectable cooling performance (13 SEER1) without breaking the budget.

Review

The ACiQ 3-ton system represents Goodman's strategy of delivering essential HVAC functionality at aggressive pricing. This downflow configuration handles both heating and cooling through a single matched unit, making it practical for homeowners replacing failed equipment or contractors stocking entry-level inventory. At $643, it undercuts many competitors while maintaining Energy Star status and respectable efficiency ratings. The system uses R454B refrigerant and includes a 10-year warranty with registration, positioning it firmly in the value segment rather than the premium tier.

Performance specifications demonstrate competent engineering without cutting excessive corners. The furnace delivers 80,000 BTU output at 97% AFUE efficiency, meaning minimal fuel waste during winter operation. Its modulating burner stages adjust flame intensity to match actual heating demand, improving comfort and reducing cycling losses. Cooling performance reaches 36,000 BTU at 13 SEER1 efficiency through a reciprocating compressor, though the single-stage design means the unit runs at full capacity or off rather than adjusting intermediate speeds. The variable-speed ECM blower motor compensates by delivering precise airflow up to 1200 CFM.

Pros & Cons

Pros

  • 97% AFUE furnace efficiency with modulating burner stages minimizes energy waste during heating season
  • 13 SEER1 cooling efficiency qualifies for Energy Star certification
  • Variable-speed ECM blower motor delivers up to 1200 CFM with better temperature consistency than single-speed units
  • Reciprocating compressor design is proven reliable in residential applications with straightforward serviceability
  • 10-year warranty with online registration provides solid peace of mind at this price point
  • PVC/plastic flue compatibility simplifies installation in retrofit applications

Cons

  • Single-stage condenser cannot modulate cooling capacity, reducing efficiency during partial-load conditions
  • 13 SEER1 is adequate but not exceptional, trailing many competitors offering 14+ SEER models
  • 74 dB noise level runs louder than premium units, noticeable from nearby bedrooms or patios
  • R454B refrigerant is newer with limited technician familiarity in some regions
  • No two-stage or variable-capacity cooling limits efficiency gains during moderate weather

Who Should Buy

Best For

Homeowners in moderate climates replacing older Goodman systems with compatible ductwork, or budget-conscious contractors installing base-model systems for rental properties and modest residences. The 80,000 BTU heating output and 36,000 BTU cooling capacity work well for homes under 1,800 square feet.

Consider Alternatives If

Anyone prioritizing lowest operating costs over time should consider higher-SEER alternatives, and homeowners in noise-sensitive applications should audition this unit first due to its 74 dB output.

3 Ton 13 SEER 97% AFUE 80,000 BTU Goodman Gas Furn
$643
Buy at HVACDirect →

Installation

Installation fits standard residential applications with downflow/horizontal configuration and A-coil design. The unit requires 115V single-phase power with 19.1 to 30-amp breaker capacity, compatible with typical household circuits. Sweat-type valve connections on 3/8 inch liquid and 7/8 inch suction lines are industry standard. PVC flue venting simplifies retrofit work compared to metal ductwork. Suction line insulation of 3/8 inch thickness comes pre-installed, reducing field preparation work.

Warranty & Reliability

Ten-year coverage with online registration covers parts and labor defects, a standard protection for this price tier. Unlike some budget units limiting coverage or requiring proof of professional installation, this warranty applies broadly to registered owners. Registration is straightforward online, and Goodman's parts network remains robust nationwide. Competitive units sometimes offer 5-year limitations, so this ten-year span provides legitimate added value for long-term ownership.

Specifications

SKUACiQ-36-EHPD-UPG
Brand/ManufacturerACiQ
Cooling BTU36,000
Heating BTU80,000
RefrigerantR454B
Electrical115 V. 1 Phase 60 Hz
Warranty10 Years with Online Registration
Decibel Level (dBA)74
Weight (in lbs)120.000000
FeatureSpec
ReplacesGSX130362, GSX130363, GSX130365
Energy StarYes
SEER1 (Efficiency)13
Condenser StagesSingle Stage
Compressor TypeReciprocating
Liquid Valve Size3/8"
Suction Valve Size3/4"
Max Breaker Size30 amps
Min. Breaker Size19.1 amps
Tonnage3 Ton
Valve TypeSweat
Height34.5"
Width17.5"
Depth28.75"
ResourcesGoodman Brochure Goodman Installation Instructions Goodman Parts Manual Goodman Service Manual Goodman Specifications Goodman Technical Information Goodman User Information Goodman 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.
ConfigurationDownflow/Horizontal
Liquid Line3/8"
Suction Line7/8"
StyleA-Coil
AHRI Certificate Number7424270
Airflow DirectionDownflow/Horizontal
Exhaust Flue RequirementPlastic / PVC
Product FeaturesRebate Available
Furnace Efficiency / AFUE97%
Blower MotorVariable Speed - ECM
Maximum CFM1200
Flue LocationRight
Burner StagesModulating
Fuel TypePropane, Natural Gas
Suction Line Insulation Thickness3/8"
Length30 feet

Frequently Asked Questions

What homes does this 3-ton, 36,000 BTU system cool adequately? +
Three-ton systems typically suit homes between 1,200 and 1,800 square feet in moderate climates. Cooling capacity of 36,000 BTU assumes proper insulation and reasonable sun exposure. Hot climates or poorly insulated spaces may require 4-ton units. Have a load calculation performed for your specific home to confirm sizing.
Can this replace my older Goodman unit? What models does it support? +
Yes, ACiQ documentation lists this as a replacement for GSX130362, GSX130363, and GSX130365 models. Check your nameplate to confirm compatibility. The downflow configuration, refrigerant type, and electrical requirements must match your existing installation. Consult your HVAC contractor before ordering to avoid compatibility issues.
How does 97% AFUE furnace efficiency impact my heating costs? +
97% AFUE means 97 cents of every gas dollar converts to usable heat, with only 3 cents lost up the flue. Compared to 80% AFUE units, annual savings average 15-20% on heating bills depending on climate. The modulating burner stages optimize efficiency further by running at partial capacity during mild weather instead of cycling full-power.
Is 13 SEER1 good enough, or should I pay more for higher ratings? +
Thirteen SEER1 is competent but not best-in-class. Modern premium units reach 16+ SEER ratings. At this price point, the trade-off makes sense for budget buyers, but homeowners in hot climates planning ten-year ownership should model the extra electricity costs versus higher upfront expenses for 15+ SEER systems.
Does online warranty registration cost extra, and how do I claim coverage? +
Registration is free online through Goodman's portal. It extends coverage to ten years automatically. To claim warranty service, contact a Goodman-authorized dealer with your serial number, proof of purchase, and registration confirmation. Covered repairs are typically handled within 24-48 hours.

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