Square Ceiling Diffuser

REF-SCD

Refria Square Ceiling Diffuser is a high-performance air distribution device designed for modern commercial and residential spaces, available in sizes from 150x150mm to 600x600mm. With adjustable 1 to 4-way airflow blades, it precisely controls air direction to ensure even distribution and enhanced comfort; made from high-quality aluminum, it is easy to install and maintain with low costs, suitable for various ceiling environments.

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Refria Square Ceiling Diffuser

High-performance, adjustable airflow solution for modern HVAC systems

About Refria Square Ceiling Diffusers

The Refria series square ceiling diffuser offers versatile airflow distribution in a sleek, modern design. This hvac ceiling diffuser is engineered for optimal air mixing and comfort, suitable for both supply and return air applications in commercial and residential spaces.

150x150 - 600x600

Size Range (mm)

Up to 2.7m

Max Throw Distance

1-4 Way

Adjustable Air Direction

Selection & Performance Data

Comprehensive performance data for selecting the right ceiling air diffuser for your project. Data chosen at air velocity of 2.4 m/s and throw velocity of 0.5 m/s.

Standard Selection Table

Standard sites A(x)(mm)	Ba(i)(mm)	Effective area(m2)	Air volume(m3/h)	Throw Max. (m)
150x1.50	295x295	0.014	119	0.90
225x2.25	370x370	0.028	240	1.40
300x3.00	445x445	0.049	400	1.70
375x3.75	520x520	0.069	600	2.00
450x4.50	595x595	0.097	840	2.40
525x5.25	670x670	0.130	1120	2.55
600x6.00	745x745	0.169	1460	2.70

Key Advantages of Our Square Ceiling Diffuser

Designed for flexibility, efficiency, and seamless integration, our hvac ceiling diffuser units provide superior air distribution with a clean aesthetic.

Adjustable 1 to 4-way air discharge to meet specific room requirements

Supply air can be oriented vertically by directional blades

Dual function for both supply and return air applications

Square or rectangular face options to match architectural demands

Suitable for rooms with ceiling heights up to 4 meters

Easy installation with screw or clip mounting options

Materials & Accessories

Material Options

Constructed from high-quality extruded aluminum profiles or aluminum sheet for durability and a premium finish.

Available Accessories

Damper for airflow control and plenum box for improved air distribution, ensuring optimal performance of your ceiling air diffuser.

Finishing

Standard white powder coating (RAL9016, RAL9010), custom colors available, or anodized finishes for enhanced aesthetics.

Why Choose VSCD Square Ceiling Diffusers?

Versatile Airflow Direction

Adjustable 1 to 4-way discharge allows precise air distribution for any room layout with this square ceiling diffuser.

Dual Supply & Return Function

A single hvac ceiling diffuser model simplifies inventory and installation for both air supply and extraction.

Architectural Flexibility

Available in square or rectangular faces to seamlessly integrate with modern ceiling designs.

Optimized for Comfort

Engineered throw distances and low noise levels ensure comfortable, draft-free air distribution in rooms up to 4m high.

Durable Construction

Made from robust aluminum with premium finishes for long-lasting performance in any commercial or residential setting.

Easy Installation

Simple screw or clip mounting, along with available accessories, makes installing this ceiling air diffuser straightforward.

Important Notes

Performance data based on standard test conditions (air velocity 2.4 m/s, throw velocity 0.5 m/s).
Specifications and dimensions are subject to change without prior notice.
For optimal performance, ensure proper selection and installation of the square ceiling diffuser by a qualified HVAC professional.

Square Ceiling Diffuser Support

Comprehensive warranty, technical support, and FAQs for your square ceiling diffuser and HVAC air distribution systems

12-Month Warranty Coverage for Square Ceiling Diffusers

Refria provides a 12-month warranty period for our square ceiling diffuser products, calculated from the date the customer receives the goods. During this warranty period, we will provide free repair services, including free replacement parts, for any failures caused by product material or workmanship quality issues in your hvac ceiling diffuser system.

12

Months Warranty

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Free Parts Replacement

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Free Repair Services

Technical Support for Square Ceiling Diffuser Systems

We offer dedicated email support to assist with any questions or issues you may have regarding your Refria square ceiling diffuser or hvac ceiling diffuser system.

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Email Support

sharon.pan@refria.com

Contact us for technical questions, troubleshooting, or operational guidance specific to your ceiling air diffuser systems

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Response Time

Within 24 hours

(1 business day) for technical inquiries

Information to Include for Diffuser Support

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Square ceiling diffuser model and size

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Detailed description of the issue with your hvac ceiling diffuser

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Installation date and location

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Photos showing the ceiling air diffuser installation if applicable

Frequently Asked Questions about Square Ceiling Diffusers

My square ceiling diffuser is producing uneven airflow, what could be the cause?

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Uneven airflow from your ceiling air diffuser can indicate several issues:

Improper Balancing: Airflow not properly balanced in the HVAC system affecting your square ceiling diffuser

Damaged Blades: Bent or damaged directional blades in your hvac ceiling diffuser

Obstructions: Debris or dust accumulation blocking airflow passages in your ceiling air diffuser

Solutions for Uneven Airflow from Square Ceiling Diffusers:

Check and adjust the damper if equipped • Clean the diffuser thoroughly to remove any obstructions • Verify that directional blades are properly aligned • Have your HVAC system balanced by a professional technician

What maintenance does my HVAC ceiling diffuser require?

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To ensure optimal performance of your square ceiling diffuser system, we recommend regular maintenance:

Regular Cleaning

Wipe exterior surfaces every 3-6 months • Clean air passages and blades annually • Remove dust and debris from the diffuser face • Check for proper airflow pattern

Professional Inspection

Have a qualified HVAC technician inspect your hvac ceiling diffuser system annually • Verify proper air balancing • Check mounting security and seals • Ensure damper functionality if equipped

⚠️ Safety Tip for Ceiling Diffuser Maintenance

Ensure HVAC system is turned off before performing any maintenance on your ceiling air diffuser to prevent injury from moving air streams or debris dislodgement.

What actions void the square ceiling diffuser warranty?

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The following situations are not covered by the warranty and may void it for your square ceiling diffuser system:

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Damage caused by improper installation or use against installation guidelines

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Unauthorized modification, painting, or alteration of the hvac ceiling diffuser

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Damage from excessive air pressure or incorrect HVAC system operation

×

Damage resulting from normal wear and tear or improper cleaning methods

×

Damage caused by environmental factors (e.g., excessive moisture, corrosive atmospheres)

×

Products installed in applications beyond their specified design parameters

Warranty Protection Tip for Ceiling Air Diffusers

Always ensure installation of your ceiling air diffuser is performed by qualified HVAC professionals according to manufacturer guidelines to maintain warranty validity.

How do I properly clean my square ceiling diffuser?

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Proper cleaning of your square ceiling diffuser is essential for maintaining optimal performance and indoor air quality:

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Turn Off HVAC System

Ensure the system is completely off before starting

②

Remove Diffuser Face

Carefully detach the face from the ceiling mounting

③

Clean Thoroughly

Use mild detergent and soft brush, then rinse and dry completely

For aluminum hvac ceiling diffuser units, avoid abrasive cleaners that can damage the finish. Always ensure the diffuser is completely dry before reinstallation to prevent moisture issues.

How do I adjust the airflow direction on my ceiling air diffuser?

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Refria square ceiling diffuser models feature adjustable blades for customizable airflow direction:

1-Way Discharge

Adjust all blades to direct air in a single direction • Ideal for narrow rooms or specific airflow patterns

2-Way or 4-Way Discharge

Configure blades to distribute air in opposing directions • Perfect for general room air mixing and circulation

Vertical Adjustment

Some models allow blade adjustment for vertical air throw • Useful for rooms with specific ceiling height requirements

Adjustment Guidelines for HVAC Ceiling Diffusers

Refer to your specific model's installation manual for detailed adjustment instructions • Make adjustments with HVAC system turned off • Consider room layout and occupant comfort when setting airflow direction • For complex adjustments, consult with an HVAC professional