Independent Review · Updated June 2026

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

High-efficiency modulating furnace with variable-speed blower and strong heating output

8.2
IndustrialRank Score
Efficiency
8.5
Reliability
7.8
Value
8.0
Installation
8.5
Warranty
8.0
3.5 Ton 13 SEER 97% AFUE 80,000 BTU Goodman Gas Furnace and Air Conditioner System - Downflow
Current Price
$0
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// Bottom Line
This 3.5-ton system delivers excellent heating efficiency at 97% AFUE with modulating burner technology that reduces energy waste. Best for homeowners in moderate climates seeking balanced heating and cooling performance with reasonable upfront costs.

Review

The ACiQ 3.5-ton gas furnace and air conditioner system represents a solid mid-market choice for homeowners balancing heating and cooling needs. This downflow-configured unit combines a 97% AFUE furnace with an R410A air conditioner in a compact 21-inch-square footprint. It operates on standard 208/230V single-phase power and carries a 10-year warranty with registration, positioning it as a practical replacement for aging systems.

Performance specs show 80,000 BTU heating output with a modulating burner that continuously adjusts flame size for optimal efficiency, while the 42,000 BTU cooling side delivers 13 SEER rating. The variable-speed ECM blower motor reaches 1,600 CFM maximum and automatically modulates airflow based on heating and cooling demand. At 75 dB, noise levels remain reasonable for most installations.

Pros & Cons

Pros

  • 97% AFUE furnace efficiency means lower heating bills, especially in colder months
  • Modulating burner adjusts output continuously rather than cycling on and off, improving comfort and efficiency
  • Variable-speed ECM blower motor reduces electricity consumption compared to fixed-speed units
  • PVC/plastic exhaust flue option simplifies installation in many home configurations
  • 10-year warranty with online registration provides solid protection against manufacturing defects

Cons

  • 13 SEER cooling efficiency is dated by 2024 standards, newer models reach 16+ SEER
  • Single-stage condenser means cooling capacity does not modulate, less efficient on mild days
  • Price listed as $0 makes actual value comparison impossible without market research

Who Should Buy

Best For

Homeowners in mixed heating and cooling climates who prioritize heating performance and want genuine efficiency improvements over budget units. Contractors replacing systems where downflow configuration is required and who value straightforward installation.

Consider Alternatives If

Buyers in hot climates where cooling dominates or those seeking cutting-edge SEER2 efficiency ratings should explore newer models with variable-speed compressors.

3.5 Ton 13 SEER 97% AFUE 80,000 BTU Goodman Gas Fu
$0
Buy at HVACDirect →

Installation

Downflow configuration requires appropriate ducting below the unit, making it ideal for basement or utility closet mounting. The 120-pound weight suits standard framing, and the plastic PVC exhaust flue simplifies venting compared to metal alternatives. Electrical requirements demand 23.9 to 40-amp breaker sizing. Licensed HVAC technicians should handle refrigerant connections and gas-line hookups.

Warranty & Reliability

Ten-year parts coverage with online registration protects against compressor failure and heat exchanger defects. This duration is competitive in the mid-tier market but trails premium brands offering 12+ years. Registration is mandatory to activate coverage, so document purchase and complete enrollment promptly.

Specifications

SKUACIQ-4X-EHPD-UPG
Brand/ManufacturerACiQ
Cooling BTU42,000
Heating BTU80,000
RefrigerantR410A
Electrical208 / 230 V. 1 Phase 60 Hz
Warranty10 Years with Online Registration
Decibel Level (dBA)75
Weight (in lbs)120.000000
FeatureSpec
AHRI Certificate Number7424271
Airflow DirectionDownflow/Horizontal
Exhaust Flue RequirementPlastic / PVC
Product FeaturesRebate Available
Furnace Efficiency / AFUE97%
Blower MotorVariable Speed - ECM
Maximum CFM1600
ConfigurationUpflow / Downflow
Flue LocationRight
Energy StarNo
Burner StagesModulating
Fuel TypePropane, Natural Gas
Height30"
Width21"
Depth21"
ResourcesCAPF Installation Manual CAPF 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.
SEER1 (Efficiency)13
Condenser StagesSingle Stage
Compressor TypeReciprocating
Liquid Line3/8"
Suction Line7/8"
Liquid Valve Size3/8"
Max Breaker Size40 amps
Min. Breaker Size23.9 amps
Tonnage5 Ton
Valve TypeSweat
StyleA-Coil
Suction Line Insulation Thickness3/8"
Length30 feet

Frequently Asked Questions

Does this system qualify for energy rebates? +
The spec sheet notes rebates are available, though eligibility depends on your utility company and state. Contact your local electric and gas providers for current rebate programs, as 97% AFUE furnaces typically qualify for heating incentives in many regions.
Can this unit be installed in an attic instead of downflow? +
Yes, the configuration supports both upflow and downflow operation. However, attic installations require proper structural support for the 120-pound weight and careful ductwork design. Consult your installer about your specific home layout.
How does 97% AFUE compare to older furnaces? +
A 97% AFUE furnace converts 97 cents of every energy dollar into heating, versus 80-85% for units 15+ years old. This 12-17 percentage point improvement typically saves $300-600 annually depending on heating demand and natural gas prices.
Is 13 SEER cooling efficiency good in 2024? +
13 SEER meets minimum federal standards but lags newer models reaching 16-18 SEER. If cooling is your priority, compare this against newer variable-speed condenser units, though those cost more upfront.
What happens if something breaks after year one? +
The 10-year warranty covers defects and failures at no cost, provided you registered online. Parts and labor are typically included, though confirm coverage details with the manufacturer or your installer.

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