Independent Review · Updated June 2026

3.5 Ton 13 SEER 96% AFUE 80,000 BTU Goodman Gas Furnace and Air Conditioner System - Downflow

High-efficiency combo system at a price that won't shock your budget

8.2
IndustrialRank Score
Efficiency
8.5
Reliability
7.8
Value
8.0
Installation
8.5
Warranty
8.0
3.5 Ton 13 SEER 96% AFUE 80,000 BTU Goodman Gas Furnace and Air Conditioner System - Downflow
Current Price
$647
Check Price at HVACDirect → Shop Now at HVACDirect
Authorized dealer · Full manufacturer warranty
// Bottom Line
This ACiQ system delivers solid efficiency at an aggressive price point, making it ideal for budget-conscious homeowners and contractors managing multiple jobs. The 96% AFUE furnace and 13 SEER cooling coil cover most residential heating and cooling needs without premium pricing.

Review

The ACiQ 3.5-ton system is a straightforward efficiency combo that bridges budget and performance. It pairs a gas furnace with an air conditioning coil in a downflow configuration, suited for basements or cramped utility closets. At $647, this unit undercuts premium brands while staying above bare-minimum discount options. The Energy Star certification signals compliance with current standards, though this is increasingly expected rather than exceptional. ACiQ positions itself as the practical choice for contractors and homeowners who need reliable heating and cooling without frills.

The furnace delivers 80,000 BTU heating output with 96% AFUE, meaning nearly all fuel converts to usable heat rather than escaping up the flue. The cooling coil provides 42,000 BTU capacity with 13 SEER1 efficiency using R410A refrigerant. The variable-speed ECM blower motor adjusts CFM between zero and 1,600 based on demand, reducing energy waste during partial-load conditions. Two-stage burners minimize short-cycling during mild weather. Single-stage compressor operation means less sophisticated part-load cooling than two-stage competitors, but adequate for most residential applications.

Pros & Cons

Pros

  • 96% AFUE furnace efficiency means lower heating bills and qualifies for some utility rebates
  • 13 SEER cooling with Energy Star certification meets modern efficiency standards at competitive pricing
  • 80,000 BTU heating output handles most single-family homes without oversizing issues
  • Variable speed ECM blower motor adjusts to actual demand rather than running full blast
  • Two-stage burner reduces short-cycling and improves comfort during mild weather
  • 10-year warranty with online registration covers defects and provides reasonable protection

Cons

  • Single-stage compressor is less efficient than two-stage alternatives on part-load cooling days
  • 75 dBA noise level is moderate, not whisper-quiet like higher-end models
  • Reciprocating compressor type is older technology compared to scroll compressors in premium units

Who Should Buy

Best For

Homeowners upgrading from older 80s-era equipment or contractors installing replacement systems in cost-sensitive markets. This system makes financial sense in moderate climates where you're not running AC 10 hours daily.

Consider Alternatives If

Buyers in hot climates needing heavy cooling hours should consider two-stage compressors, and those prioritizing whisper-quiet operation should demo competitors first.

3.5 Ton 13 SEER 96% AFUE 80,000 BTU Goodman Gas Fu
$647
Buy at HVACDirect →

Installation

Downflow configuration fits tight basements and utility rooms efficiently. Requires 3/8 inch liquid line and 7/8 inch suction line with sweat valve connections, needing brazing skills or certified HVAC technician. PVC flue exhaust simplifies venting in modern homes. Electrical demand runs 23.9 to 40 amps on 115V single-phase, fitting standard household circuits. Suction line insulation at 3/8 inch thickness prevents condensation in humid environments.

Warranty & Reliability

10-year coverage requires online registration and protects against manufacturing defects in parts and labor. This matches industry mid-tier standards but falls short of some competitors offering 12-year protection. Registration is straightforward online and worth the five minutes for peace of mind. Coverage excludes wear items and installation errors.

Specifications

SKUACIQ-4X-EHPD-UPG
Brand/ManufacturerACiQ
Cooling BTU42,000
Heating BTU80,000
RefrigerantR410A
Electrical115 V. 1 Phase 60 Hz
Warranty10 Years with Online Registration
Decibel Level (dBA)75
Weight (in lbs)120.000000
FeatureSpec
Energy StarYes
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
Tonnage3.5 Ton
Valve TypeSweat
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.
AHRI Certificate Number7368843
Airflow DirectionDownflow/Horizontal
Exhaust Flue RequirementPlastic / PVC
Product FeaturesRebate Available
Furnace Efficiency / AFUE96%
Blower MotorVariable Speed - ECM
Maximum CFM1600
ConfigurationUpflow / Downflow
Burner StagesTwo
Fuel TypePropane, Natural Gas
StyleA-Coil
Suction Line Insulation Thickness3/8"
Length30 feet

Frequently Asked Questions

How does 96% AFUE compare to my old furnace? +
Most furnaces installed before 2010 run 78-82% AFUE, wasting one-fifth of fuel. This 96% unit cuts heating waste nearly in half, recovering roughly $200-400 annually on heating costs in northern climates. Actual savings depend on local gas prices and your home's insulation.
Can I install this myself or do I need a professional? +
Refrigerant handling requires EPA certification in all 50 states, so you'll need a licensed technician. Brazing copper lines, electrical connections, and ductwork integration demand professional expertise. DIY installation voids warranty and risks safety hazards.
Is 13 SEER enough cooling efficiency? +
13 SEER meets federal minimum standards and works well in moderate climates. Hot, humid regions benefit from 16-18 SEER two-stage units despite higher upfront cost. For 40-60 cooling days annually, 13 SEER provides acceptable efficiency without premium pricing.
How does ACiQ compare to Goodman directly? +
ACiQ is Goodman's value-focused brand, sharing core components but stripped of premium features. You get identical reliability with simpler controls and fewer color/size options. Think Toyota Corolla versus Lexus from the same parent company.
What does the 10-year warranty actually cover? +
Covers manufacturing defects in compressor, coil, and burner parts. Does not cover installation mistakes, ductwork problems, or refrigerant leaks from accidents. Register online immediately after installation to activate full coverage period.

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