3.5 Ton 13 SEER Goodman Air Conditioner with Horizontal Slab Coil Review 2026

// Bottom Line

This ACiQ unit is best for contractors and homeowners replacing older systems on a budget, particularly in moderate climates where 13 SEER performance is sufficient. The horizontal slab coil design makes it ideal for tight basement or crawlspace installations where space constraints are a primary concern.

Review

The ACiQ 3.5-ton condenser with horizontal slab coil sits squarely in the value-conscious market segment where affordability and practical function matter more than premium features. Positioned below major name brands like Goodman and Lennox, this unit delivers baseline cooling performance using proven single-stage compressor technology. It's engineered for quick replacement installations where contractors need reliable equipment without the price premium of higher SEER ratings or variable-speed components.

The 42,000 BTU capacity matches standard 3.5-ton cooling demand, while the 13 SEER efficiency rating meets minimum federal standards but falls short of today's 14-16 SEER market leaders. Operating at 208/230V single-phase with a 40-amp maximum breaker size, this unit integrates into most residential electrical systems without expensive upgrades. The reciprocating compressor runs single-stage, meaning it cycles on and off rather than modulating, which simplifies installation but generates 75 dB of noise under full load.

Pros & Cons

Pros

42,000 BTU cooling capacity handles 3.5-ton load efficiently at 13 SEER rating
Horizontal slab configuration saves space in tight installations, especially basements and crawlspaces
Single-stage reciprocating compressor is proven, affordable technology with abundant service parts availability
Operates on standard 208/230V single-phase power with modest 40-amp maximum breaker requirement
10-year warranty with online registration provides reasonable coverage at this price point

Cons

75 dB noise level is louder than comparable variable-speed units, which may concern noise-sensitive homeowners
Not Energy Star certified and 13 SEER is below modern 14-16 SEER standards, limiting long-term utility savings
Single-stage compressor runs at full capacity continuously, reducing operational efficiency compared to two-stage designs

Who Should Buy

Best For

Contractors managing tight-budget retrofit projects and homeowners replacing failed systems where immediate affordability outweighs long-term efficiency gains. This unit works well in moderate climates where maximum seasonal cooling loads stay reasonable and energy costs are less of a concern.

Consider Alternatives If

Anyone in hot climates requiring maximum efficiency, noise-sensitive neighborhoods, or those planning to stay in their home 10+ years and wanting to minimize utility bills.

3.5 Ton 13 SEER Goodman Air Conditioner with Horiz

Buy at HVACDirect →

Installation

The horizontal slab configuration installs low-profile in basements, crawlspaces, or tight equipment rooms where vertical units won't fit. Suction and liquid line connections use 7/8-inch and 3/8-inch sweat fittings respectively, standard for most HVAC techs. Pre-insulated suction line with 3/8-inch thickness and 30-foot length accommodates typical residential run distances, reducing field fabrication time.

Warranty & Reliability

The 10-year warranty requires online registration and covers manufacturing defects across compressor and condenser components. This provides mid-range protection typical of budget equipment, though you'll need to maintain documentation for claims. Coverage excludes installation defects and normal wear, so proper startup and maintenance are essential for full protection.

Specifications

SKU	ACIQ-4X-EHPD-UPG
Brand/Manufacturer	ACiQ
Cooling BTU	42,000
Refrigerant	R410A
Electrical	208 / 230 V. 1 Phase 60 Hz
Warranty	10 Years with Online Registration
Decibel Level (dBA)	75
Weight (in lbs)	120.000000
Feature	Spec
Energy Star	No
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	25"
Width	39.5"
Depth	12"
Resources	CSCF Installation Manual CSCF 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.
Configuration	Horizontal
Style	Slab
Suction Line Insulation Thickness	3/8"
Length	30 feet

Frequently Asked Questions

How does the 13 SEER rating compare to current efficiency standards? +

13 SEER meets minimum federal requirements but ranks below current market leaders offering 14-16 SEER ratings. At 42,000 BTU capacity, you're trading roughly 7-18% annual energy efficiency against upfront cost savings of $500-1,200 compared to higher-tier units. For moderate climates, the efficiency gap may not justify premium pricing.

Will this horizontal coil fit my basement installation? +

Yes. At 25 inches high, 39.5 inches wide, and 12 inches deep, the horizontal slab design fits tight spaces where vertical condensers can't work. Confirm floor space and that your 30-foot pre-insulated suction line reaches your indoor coil location before purchasing.

Is the 75 dB noise level acceptable for residential use? +

75 dB approximates a moderately loud conversation or heavy traffic. Single-stage units like this run continuously at full volume during cooling, unlike variable-speed competitors that modulate quietly. Expect noticeable ambient noise if your condenser location is near patios or bedroom windows.

How does the single-stage compressor affect long-term reliability? +

Single-stage reciprocating compressors are the industry workhorse, proven over decades with abundant replacement parts. The trade-off is efficiency, since full-load cycling uses more energy than variable-stage modulation. Reliability should equal or exceed premium models if properly installed and maintained.

Does this unit qualify for utility rebates or tax credits? +

No. Without Energy Star certification and at 13 SEER, this unit doesn't qualify for most state or federal efficiency rebates available for 14+ SEER equipment. Check local programs, but budget this as a straight replacement cost.

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