4 Ton 14 SEER Goodman Air Conditioner with Vertical 21" Cased Coil Review 2026

// Bottom Line

This ACiQ coil works best for contractors replacing worn evaporators in existing 4 to 5 ton systems where budget matters and Energy Star certification isn't required. The 14 SEER rating and R454B refrigerant keep it competitive for mid-range residential cooling upgrades.

Review

The ACiQ 4 ton vertical A-coil represents a practical middle ground in the residential cooling market. Rated for 48,000 BTU of cooling, this unit uses modern R454B refrigerant and delivers 14 SEER efficiency. It's built for contractors and homeowners who need straightforward replacement cooling without premium features or premium pricing. The compact 21 inch casing dimensions make it attractive for tight installation spaces common in older homes.

Performance specs show a single stage scroll compressor that runs on 208/230V single phase power with breaker requirements between 26.4 and 45 amps. The 74 dB noise level is acceptable for background operation but noticeably louder than variable capacity units. Refrigerant line sizes are standard, 3/8 inch for liquid and 7/8 inch for suction, with 30 feet of pre-insulated suction line included. The 120 pound weight makes handling manageable for two technicians during installation.

Pros & Cons

Pros

48,000 BTU cooling capacity matches standard 4 ton systems without oversizing
14 SEER efficiency provides solid performance without premium pricing
Compact 21 inch width fits tight attic and basement installations
R454B refrigerant is modern, environmentally compliant, and widely available
10 year warranty with online registration covers manufacturing defects

Cons

74 dB noise level runs louder than high efficiency competitors in the same class
Single stage compressor lacks modulation, meaning less comfort on mild days
Not Energy Star certified, limiting appeal for efficiency-focused buyers

Who Should Buy

Best For

Homeowners and contractors performing equipment replacement in existing homes where the indoor unit space is limited and upfront cost is a priority. This coil makes sense for retrofits into standard A-frame cabinets without custom ductwork.

Consider Alternatives If

Anyone prioritizing quiet operation, variable capacity, or Energy Star compliance should look at variable speed or dual stage alternatives instead.

4 Ton 14 SEER Goodman Air Conditioner with Vertica

Buy at HVACDirect →

Installation

Installation fits standard upflow and downflow configurations with minimal ductwork modification. The pre-insulated suction line with 3/8 inch thickness reduces field insulation work. Electrical connections require proper 208/230V single phase service and appropriate breaker sizing. Most installations take 4 to 6 hours for experienced technicians, including evacuation, charging, and leak testing with R454B.

Warranty & Reliability

ACiQ provides 10 years of parts coverage when you register online after purchase. This covers manufacturing defects in the coil and compressor. Registration is straightforward and typically completed during the initial service visit. The Goodman evaporator coil warranty extends coverage for the heat exchanger itself, giving dual protection for the core component.

Specifications

SKU	ACIQ-48-EHPD-UPG
Brand/Manufacturer	ACiQ
Cooling BTU	48,000
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
Energy Star	No
SEER1 (Efficiency)	14
Condenser Stages	Single Stage
Compressor Type	Scroll
Liquid Valve Size	3/8"
Suction Valve Size	7/8"
Max Breaker Size	45 amps
Min. Breaker Size	26.4 amps
Tonnage	5 Ton
Height	30"
Width	21"
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.
Configuration	Upflow / Downflow
Liquid Line	3/8"
Suction Line	7/8"
Style	A-Coil
Suction Line Insulation Thickness	3/8"
Length	30 feet

Frequently Asked Questions

Does this coil work with my existing 4 ton condenser unit? +

Yes, the 48,000 BTU capacity matches standard 4 ton condensers. However, verify your condenser is also R454B compatible and check with the condenser manufacturer that they certify this coil pairing. Mismatched components reduce efficiency and void warranties.

What's the actual SEER2 rating compared to SEER1? +

The spec shows 14 SEER1. SEER2 ratings are typically 15-20 percent lower than SEER1 under newer testing standards. This coil likely delivers around 11-11.5 SEER2, important for accurate system planning with current efficiency comparisons.

How loud is 74 dB compared to other coils? +

At 74 dB, this runs as loud as conversational speech at 3 feet. Variable capacity coils often run 68-70 dB. In quiet bedrooms, you'll notice the difference. For basements or utility closets, 74 dB is acceptable background noise.

Is R454B refrigerant reliable and available long term? +

R454B is EPA approved and widely stocked at HVAC suppliers. It's the modern replacement for older refrigerants and should remain available for 15-20 years. Pricing is stable and technician training is standard across the industry.

Does online registration actually matter for warranty coverage? +

Yes. Without registration, ACiQ may deny warranty claims. Registration takes 5 minutes online and should be completed within 30 days of purchase. Keep proof of registration with your paperwork.

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