Independent Review · Updated June 2026

3.5 Ton 13 SEER 96% AFUE 100,000 BTU Goodman Gas Furnace and Air Conditioner System - Downflow

High-efficiency 3.5-ton system balances solid SEER 13 cooling with 96% AFUE heating at an accessible price point.

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 100,000 BTU Goodman Gas Furnace and Air Conditioner System - Downflow
Current Price
$647
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// Bottom Line
This ACiQ system is ideal for homeowners replacing older equipment in moderate climates who want proven efficiency without premium pricing. The 96% AFUE and 13 SEER ratings make it suitable for homes where both heating and cooling demand are substantial.

Review

The ACiQ ACIQ-4X-EHPD-UPG is a solid mid-tier split system combining a gas furnace and air conditioning condenser designed for downflow installation. At $647, it undercuts comparable Goodman-branded equipment while maintaining core efficiency standards. This 3.5-ton unit is engineered for residential applications in homes ranging from 1,400 to 1,800 square feet. The system carries a 10-year warranty with online registration and Energy Star certification, positioning it as a practical choice for homeowners balancing budget constraints with genuine efficiency requirements.

Performance specs are straightforward and honest. The furnace delivers 100,000 BTU with 96% AFUE efficiency using natural gas or propane, paired with a two-stage burner and variable-speed ECM blower motor capable of 2,000 CFM maximum airflow. Cooling output reaches 42,000 BTU at 13 SEER using R410A refrigerant with a single-stage reciprocating compressor. Electrical requirements are modest, needing 115V single-phase 60Hz service with a 23.9 to 40-amp breaker range. These specifications deliver measurable efficiency without reaching top-tier performance tiers.

Pros & Cons

Pros

  • 96% AFUE furnace efficiency means heating costs are genuinely competitive with high-end units
  • 13 SEER cooling efficiency qualifies for many utility rebates and Energy Star certification
  • Two-stage burner with variable-speed ECM motor delivers better part-load efficiency and comfort
  • 100,000 BTU heating output handles most residential heating needs in cold climates
  • $647 price point is 30-40% below comparable Goodman-branded systems with similar specs
  • Downflow/horizontal A-coil configuration works in attics, crawlspaces, and conditioned basements

Cons

  • Single-stage compressor means cooling cycles on and off rather than modulating, reducing dehumidification
  • 75 dB noise level is moderate, noticeable during operation especially in quieter homes
  • SEER 13 is efficient but not premium, newer competitors offer SEER 14-16 at similar prices

Who Should Buy

Best For

Homeowners in northern and transitional climates who prioritize heating efficiency and want a budget-conscious upgrade. This system makes sense for secondary homes or properties where premium SEER 16+ ratings are overkill.

Consider Alternatives If

Anyone in cooling-dominant climates should explore higher SEER units. Buyers needing whisper-quiet operation or variable-capacity cooling should compare models with two-stage compressors.

3.5 Ton 13 SEER 96% AFUE 100,000 BTU Goodman Gas F
$647
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Installation

Installation requires standard split-system procedures with refrigerant line sets up to 30 feet maximum. The condenser uses 3/8-inch liquid lines and 7/8-inch suction lines with sweat valve connections. Downflow configuration works in attics or crawlspaces with plastic or PVC exhaust flue venting. The unit weighs 120 pounds and measures 34.5 inches tall, 21 inches wide, and 28.75 inches deep. Standard ductwork and electrical work apply. AHRI certificate number 7368844 ensures proper matching with indoor coils.

Warranty & Reliability

The 10-year parts warranty requires online registration and covers manufacturing defects. This is above-average coverage for equipment at this price point but below premium brands offering lifetime compressor protection. The warranty does not include labor costs or damage from improper installation, so hiring a certified technician is recommended. Check your local regulations for any emissions or efficiency rebates that may apply.

Specifications

SKUACIQ-4X-EHPD-UPG
Brand/ManufacturerACiQ
Cooling BTU42,000
Heating BTU100,000
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
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
StyleA-Coil
AHRI Certificate Number7368844
Airflow DirectionDownflow/Horizontal
Exhaust Flue RequirementPlastic / PVC
Product FeaturesRebate Available
Furnace Efficiency / AFUE96%
Blower MotorVariable Speed - ECM
Maximum CFM2000
Burner StagesTwo
Fuel TypePropane, Natural Gas
Suction Line Insulation Thickness3/8"
Length30 feet

Frequently Asked Questions

How does the 13 SEER rating compare to newer air conditioners? +
SEER 13 is solid but not cutting-edge. Current premium units hit SEER 16-18. However, SEER 13 still qualifies for most utility rebates and Energy Star incentives. The real question is whether paying extra for SEER 15+ makes sense in your climate. In moderate cooling zones, SEER 13 delivers reasonable payback within 7-10 years.
Can I install this in an attic if my home doesn't have a basement? +
Yes. The downflow/horizontal A-coil configuration is specifically designed for attic and crawlspace placement. The 34.5-inch height and 21-inch width fit most standard framing. Ensure adequate clearance for airflow and access for future maintenance. Plastic PVC venting makes attic installation straightforward compared to older metal duct systems.
Is 100,000 BTU enough heat for a cold climate? +
For most homes in zones 5-6, yes. A properly insulated 1,500-square-foot home typically needs 60,000-80,000 BTU. The extra 20,000 BTU buffer handles poor insulation and extreme cold snaps. Get a Manual J load calculation done to confirm. Oversizing costs more to operate; undersizing won't keep you warm.
Why is the price $647 when Goodman branded systems cost $1,200+? +
ACiQ is Goodman's budget subsidiary using the same compressors and burners but fewer premium features. You lose variable-capacity cooling, quieter operation, and extensive warranty add-ons. The core heating and cooling components are proven. This pricing model works for budget-conscious buyers willing to trade convenience for savings.
Does the 10-year warranty cover refrigerant leaks? +
Manufacturing defects yes, but not improper installation or normal wear. Refrigerant itself is not covered. Online registration is required to activate warranty coverage, so complete that immediately after purchase. Labor costs always fall on the homeowner.

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