Independent Review · Updated June 2026

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

97% AFUE furnace paired with 13 SEER cooling in one compact downflow unit

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
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// Bottom Line
This Goodman combo system delivers solid year-round efficiency with a 97% AFUE furnace and 13 SEER air conditioner in a compact downflow footprint. It's ideal for homeowners replacing aging equipment in tight basement or closet spaces where vertical clearance matters.

Review

The Goodman ACiQ-36-EHPD-UPG combines a gas furnace and air conditioner into one downflow-configured unit, addressing a specific market need for contractors and homeowners managing tight installation spaces. With an 80,000 BTU furnace output and 36,000 BTU cooling capacity (3.5 ton), this system handles moderate to large single-story homes. The Energy Star certification signals reasonable efficiency standards, while the compact 34.5-inch height makes it viable for basement or closet installations where taller units simply won't fit.

Performance numbers matter here. The 97% AFUE rating on the furnace side means you're keeping most of your heating fuel energy for actual warmth, not losing it up the flue. The modulating burner adjusts firing rates rather than cycling on and off, which typically reduces short cycling and temperature swings. On cooling, the 13 SEER compressor with single-stage operation delivers predictable performance, though not the premium efficiency of higher SEER units. The variable-speed ECM blower motor adapts to actual heating and cooling demands, reducing idle energy waste compared to fixed-speed motors.

Pros & Cons

Pros

  • 97% AFUE furnace efficiency with modulating burners reduces gas waste and heating costs
  • Modulating burner stages provide quieter operation and more consistent temperature control
  • 13 SEER cooling meets ENERGY STAR standards at a reasonable price point
  • Variable-speed ECM blower motor adjusts to demand, lowering electricity consumption
  • Compact 34.5 inch height fits tight downflow installations common in basements
  • 10-year warranty with online registration covers parts and labor in most cases

Cons

  • Single-stage reciprocating compressor produces 74 dB, noticeably louder than scroll compressors
  • 13 SEER is mid-range for 2024, SEER2 ratings would show lower seasonal performance
  • R454B refrigerant requires EPA certification for service technicians

Who Should Buy

Best For

Homeowners replacing a failed furnace-AC combo in a basement or utility closet with limited vertical space. Contractors who need a reliable, competitively priced system that handles both heating and cooling without requiring custom ductwork modifications.

Consider Alternatives If

Buyers in very hot climates prioritizing cooling efficiency should look at higher SEER units, and those expecting whisper-quiet operation should consider scroll compressor systems.

3 Ton 13 SEER 97% AFUE 80,000 BTU Goodman Gas Furn
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Installation

Downflow configuration requires furnace placement above the supply plenum or return air path. Requires 115V single-phase 60Hz electrical service with a 19.1 to 30-amp breaker. Refrigerant lines use 3/8-inch suction and liquid line sizing with 3/8-inch insulation. Suction and liquid valve sizes are 3/4-inch and 3/8-inch respectively, both sweat-type connections. Professional installation is essential for proper refrigerant charging and airflow balance.

Warranty & Reliability

Goodman backs this system with a 10-year parts and labor warranty when you register online. This is standard industry coverage and protects against defects in materials and workmanship. Registration must be completed within 30 days of installation. The warranty does not typically cover wear items, user-caused damage, or misapplication of the equipment.

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
Tonnage3.5 Ton
Valve TypeSweat
Height34.5"
Width21"
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 Number7424271
Airflow DirectionDownflow/Horizontal
Exhaust Flue RequirementPlastic / PVC
Product FeaturesRebate Available
Furnace Efficiency / AFUE97%
Blower MotorVariable Speed - ECM
Maximum CFM1600
Flue LocationRight
Burner StagesModulating
Fuel TypePropane, Natural Gas
Suction Line Insulation Thickness3/8"
Length30 feet

Frequently Asked Questions

How does the 97% AFUE compare to my old furnace? +
Older furnaces typically run 78-85% AFUE, meaning 15-22% of your heating energy literally exits the chimney. A 97% AFUE unit recovers nearly all combustion heat. On a $1,200 annual heating bill, the 97% model could save $150-250 per year depending on your climate zone and usage patterns.
Will this fit my basement where I have only 35 inches of clearance? +
The unit is 34.5 inches tall, so yes, it fits by a half-inch. However, you need additional clearance above for the flue exhaust pipe, return air connections, and service access. Plan for at least 48-54 inches total with all connections included before confirming final placement.
What's the difference between 13 SEER and the newer SEER2 ratings? +
SEER2 tests at higher outdoor temperatures and lower capacity, typically showing 15-20% lower numbers than SEER. A 13 SEER unit roughly equates to a 10-10.5 SEER2. It's still competent cooling, just not cutting-edge efficiency compared to 15+ SEER2 units.
Is this better than a Bryant or Carrier combo system? +
Goodman units undercut premium brands on price while delivering similar efficiency specs. Bryant and Carrier often add quieter compressors and slightly higher SEER ratings, but cost 20-35% more. This Goodman is the value choice for contractors managing budget-conscious jobs.
Do I need EPA certification to service the R454B refrigerant? +
Yes, R454B is a regulated refrigerant. Your service technician must hold EPA Section 608 certification. Many older techs are still familiar with R22, so confirm your contractor is certified for R454B before hiring them.

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