3 Ton 13 SEER 96% AFUE 120,000 BTU Goodman Gas Furnace and Air Conditioner System - Downflow Review 2026

// Bottom Line

This ACiQ system delivers legitimate high-efficiency heating with a 96% AFUE rating and variable-speed ECM blower, making it excellent for homeowners replacing older equipment in cold climates or those seeking lower heating costs. The $3,551 price point positions it as a strong value alternative to premium brand names without sacrificing core performance.

Review

The ACiQ 3-ton downflow system occupies a practical middle ground in the HVAC market, delivering engineering-focused efficiency without flagship brand pricing. At $3,551, this combo unit positions itself as a direct competitor to Goodman's mainstream offerings, which it actually shares manufacturing DNA with. The downflow configuration addresses a real installation need for contractors working in basements and crawl spaces where upflow units simply won't fit.

Heating performance centers on a 120,000 BTU capacity with 96% AFUE efficiency, meaning only 4,800 BTU per hour escapes through the flue. The variable-speed ECM blower modulates between near-silent idle and 2,000 CFM peak output, automatically matching heating demand. Two-stage burner operation prevents excessive cycling and temperature swings. Cooling delivers 36,000 BTU at 13 SEER using R454B refrigerant, adequate for moderate climates but not best-in-class.

Pros & Cons

Pros

96% AFUE efficiency means heating losses under 4%, translating to measurable monthly savings on natural gas or propane bills
Variable-speed ECM motor adjusts airflow from near-silent operation to 2,000 CFM maximum, reducing energy waste during partial-load heating
Two-stage burner enables modulating heat output, maintaining consistent comfort without the on-off cycling of single-stage units
13 SEER cooling efficiency paired with R454B refrigerant meets current environmental standards
PVC flue compatibility simplifies venting in tight installations where metal flues won't fit
10-year warranty with online registration provides solid protection on compressor and parts

Cons

13 SEER cooling rating lags newer high-efficiency models reaching 16+ SEER, making this less ideal if cooling performance is priority
Single-stage condenser limits cooling flexibility, particularly problematic in hot climates where variable capacity reduces strain
No Energy Star certification despite 96% AFUE, suggesting the unit doesn't meet additional DOE performance tiers some rebate programs require
74 dB noise level is moderate but noticeable, roughly equivalent to a dishwasher running during heating cycles

Who Should Buy

Best For

Contractors and homeowners in northern climates upgrading from 80-85% AFUE furnaces will see the fastest payback, especially properties using natural gas heating. This system fits tight attic spaces or basements where downflow configuration is necessary and budget constraints rule out premium brands.

Consider Alternatives If

Skip this unit if cooling is your primary concern or you live in a warm climate, as the single-stage condenser and 13 SEER rating underperform versus dedicated cooling-optimized systems. Buyers seeking the highest SEER ratings or Energy Star certification should examine higher-tier alternatives.

3 Ton 13 SEER 96% AFUE 120,000 BTU Goodman Gas Fur

$3551

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Installation

This downflow configuration requires a basement or crawl space with sufficient vertical clearance, minimum 30 inches height. PVC or plastic flue venting simplifies installation versus metal ductwork in tight spaces. Electrical runs 208/230V single-phase at 19.1 to 30-amp breaker capacity, standard for residential service. Variable-speed motor wiring adds minimal complexity versus older PSC designs. Allow 2-3 hours for experienced techs.

Warranty & Reliability

Ten-year parts and compressor coverage applies with online registration, covering defects in materials and workmanship but excluding installation labor. This matches industry standard for mid-tier equipment. Goodman's evaporator coil carries separate warranty terms accessible via provided documentation. Registration is mandatory to activate full coverage, so save your receipt and complete the step within 30 days of installation.

Specifications

SKU	ACiQ-36-EHPD-UPG
Brand/Manufacturer	ACiQ
Cooling BTU	36,000
Heating BTU	120,000
Refrigerant	R454B
Electrical	208 / 230 V. 1 Phase 60 Hz
Warranty	10 Years with Online Registration
Decibel Level (dBA)	74
Weight (in lbs)	120.000000
Feature	Spec
AHRI Certificate Number	7368845
Airflow Direction	Downflow/Horizontal
Exhaust Flue Requirement	Plastic / PVC
Product Features	Rebate Available
Furnace Efficiency / AFUE	96%
Blower Motor	Variable Speed - ECM
Maximum CFM	2000
Configuration	Upflow / Downflow
Energy Star	No
Burner Stages	Two
Fuel Type	Propane, Natural Gas
Height	30"
Width	24.5"
Depth	21"
Resources	CAPF Installation Manual CAPF Specifications Sheet Goodman Evaporator Coil 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.
Replaces	GSX130362, GSX130363, GSX130365
SEER1 (Efficiency)	13
Condenser Stages	Single Stage
Compressor Type	Reciprocating
Liquid Valve Size	3/8"
Suction Valve Size	3/4"
Max Breaker Size	30 amps
Min. Breaker Size	19.1 amps
Tonnage	3.5 Ton
Valve Type	Sweat
Liquid Line	3/8"
Suction Line	7/8"
Style	A-Coil
Suction Line Insulation Thickness	3/8"
Length	30 feet

Frequently Asked Questions

Will a 96% AFUE furnace actually reduce my heating bills compared to my 82% AFUE unit? +

Yes, measurably. A 14-point efficiency jump saves roughly 17% of heating energy. In northern climates heating 6-8 months annually, expect $150-300 annual savings depending on fuel costs and home size. Payback typically occurs within 5-7 years on heating alone.

Can this downflow unit fit in my basement with 31 inches of vertical space? +

Just barely. The unit measures 30 inches tall, leaving only 1 inch of clearance. You'll need additional space for vibration isolation pads and ductwork connections. Most installers recommend minimum 36 inches for practical serviceability and filter access.

How does the two-stage burner improve comfort? +

Stage 1 handles 70% of capacity for mild winter days, reducing on-off cycling that causes temperature swings. Stage 2 engages only during harsh cold snaps. This modulation maintains steadier room temperatures while using less energy than single-stage units that run full blast then shut off completely.

Is 13 SEER cooling adequate or should I upgrade for better summer performance? +

13 SEER is acceptable in moderate climates but trails newer systems at 15+ SEER. For hot, humid regions where cooling runs 6+ months yearly, stepping up to 14-16 SEER recovers the premium faster. This unit prioritizes heating efficiency, so value depends on your climate balance.

What does the 10-year warranty actually cover and what doesn't? +

Compressor, cabinet, and internal parts are covered with online registration. Excluded: installation labor, ductwork repairs, electrical work, and damage from improper maintenance. Keep service records to maintain eligibility. Registration is required, so complete it immediately after installation.

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