3.5 Ton 13 SEER 98% AFUE 80,000 BTU Goodman Gas Furnace and Air Conditioner System - Upflow Review 2026

// Bottom Line

This ACiQ system is ideal for budget-conscious homeowners replacing aging gas furnaces in moderate climates where 3.5-ton cooling capacity fits the load. The 97% AFUE heating efficiency and modulating burner deliver year-round savings, though the 13 SEER cooling is solid rather than exceptional for air conditioning-heavy regions.

Review

The ACiQ 3.5-ton system represents solid value in the budget HVAC segment. This upflow A-coil configuration combines an 80,000 BTU Goodman gas furnace rated at 97% AFUE with a matching 42,000 BTU air conditioning condenser. At $647, it undercuts many competitors while maintaining Energy Star certification and respectable efficiency across both heating and cooling modes. The unit targets contractors and homeowners seeking straightforward equipment replacement without premium pricing.

Performance metrics show the furnace's strength in heating applications. The modulating burner stages adjust output for better part-load efficiency, while the variable-speed ECM blower motor delivers up to 1,600 CFM. Cooling performance is competent, though 13 SEER certification places it in the mainstream category rather than the efficiency leadership tier. The 75 dB noise level during operation exceeds quieter models, which matters for bedroom installations or noise-sensitive locations.

Pros & Cons

Pros

97% AFUE furnace efficiency with modulating burner stages reduces heating costs significantly
42,000 cooling BTU with 13 SEER rating handles most residential loads efficiently
80,000 BTU heating capacity suits 2,000-2,500 sq ft homes in moderate climates
Variable-speed ECM blower motor adjusts airflow for comfort and efficiency
PVC/plastic exhaust capability simplifies venting in retrofit installations
$647 price point offers exceptional value for a complete system

Cons

13 SEER is adequate but lags modern 14-16 SEER competitors in hot climates
Single-stage compressor cannot modulate cooling capacity like two-stage units
75 dB noise level is louder than premium units, noticeable during operation
Reciprocating compressor typically less efficient than rotary or scroll designs

Who Should Buy

Best For

Contractors installing budget systems for price-sensitive customers and homeowners in moderate climates replacing older equipment. This system excels when heating dominates cooling demands and upfront cost takes priority over premium efficiency features.

Consider Alternatives If

Desert and southern homeowners needing aggressive cooling performance, and buyers in high-efficiency markets where 16+ SEER systems provide better long-term operating cost savings.

3.5 Ton 13 SEER 98% AFUE 80,000 BTU Goodman Gas Fu

$647

Buy at HVACDirect →

Installation

Installation requires standard HVAC practices with moderate complexity. The plastic PVC exhaust venting simplifies retrofit work compared to metal ductwork. Liquid and suction lines measure 3/8 inch and 7/8 inch respectively with sweat valve connections. Electrical demand is modest at 115V single-phase 60Hz with 23.9-40 amp breaker sizing. Most experienced HVAC techs can complete installation within 4-6 hours.

Warranty & Reliability

ACiQ backs this system with a 10-year parts warranty upon online registration. This aligns with industry midrange coverage, protecting against manufacturer defects but requiring registration to activate. Extended warranties are typically available separately. Coverage terms are straightforward without complex limitations, providing solid protection for the price point.

Specifications

SKU	ACIQ-4X-EHPD-UPG
Brand/Manufacturer	ACiQ
Cooling BTU	42,000
Heating BTU	80,000
Refrigerant	R410A
Electrical	115 V. 1 Phase 60 Hz
Warranty	10 Years with Online Registration
Decibel Level (dBA)	75
Weight (in lbs)	120.000000
Feature	Spec
Energy Star	Yes
SEER1 (Efficiency)	13
Condenser Stages	Single Stage
Compressor Type	Reciprocating
Liquid Line	3/8"
Suction Line	7/8"
Liquid Valve Size	3/8"
Max Breaker Size	40 amps
Min. Breaker Size	23.9 amps
Tonnage	3.5 Ton
Valve Type	Sweat
Height	34.5"
Width	21"
Depth	28.75"
Resources	Goodman Brochure Goodman Installations 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 Information	PROPOSITION 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.
Configuration	Upflow/Horizontal
Style	A-Coil
AHRI Certificate Number	7424266
Airflow Direction	Upflow/Horizontal
Exhaust Flue Requirement	Plastic / PVC
Furnace Efficiency / AFUE	97%
Blower Motor	Variable Speed - ECM
Maximum CFM	1600
Burner Stages	Modulating
Fuel Type	Propane, Natural Gas
Suction Line Insulation Thickness	3/8"
Length	30 feet

Frequently Asked Questions

How does this system compare to higher-SEER units in cooling performance? +

The 13 SEER rating delivers adequate cooling for moderate climates but lags 15-16 SEER competitors in hot regions. You'll notice 15-20% higher cooling electricity costs versus premium units, though purchase price advantage is substantial. Best for mixed heating/cooling climates where furnace efficiency matters more.

Will this upflow configuration work in my basement installation? +

Yes, the upflow A-coil design works well for basement placement with ductwork running upward. The 34.5-inch height and 21-inch width fit standard mechanical room spaces. Verify ceiling clearance for the suction line insulation before installation and plan adequate return air supply.

What does 97% AFUE actually mean for my heating bills? +

97% AFUE means 97 cents of every heating dollar becomes warmth, with 3 cents lost through the exhaust. Compared to 80% AFUE systems, you'll see 15-20% annual heating cost reductions on a $1,500 winter bill. This adds up quickly in northern climates.

Is the modulating burner better than a two-stage furnace? +

Modulating burners offer smoother operation than two-stage units, adjusting continuously to meet demand rather than switching between high and low. They typically deliver 2-3% better part-load efficiency. However, two-stage units cost less upfront while still providing comfort improvements over single-stage models.

Does the 10-year warranty cover labor or just parts? +

The warranty covers parts only upon online registration. Labor is your responsibility. Many contractors offer separate labor warranties, so confirm coverage with your installer before signing the contract.

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