AC INFINITY
AC Infinity Multifan S3, Quiet USB Cooling Fan, 120MM
Pickup available at Bansley Store
Usually ready in 24 hours
Shipping & Returns
Our current shipping rates are as follows:
- UK Orders Over £50 – Free Next Day Delivery
- UK Orders Under £50 – £8 (Next Day Delivery)
- UK Orders Next Day AM – £20
- UK Orders Saturday AM – £30
- International Orders DAP – Select between UPS or Fedex and we'll sort the rest. (All duty paid by us prior to shipping)
All parcels are fully tracked. Once your order has been dispatched, you’ll receive an email containing your tracking number.
If your order is classed as an oversized item OR deemed extra heavy, additional heavy shipping duty will be added at checkout when selecting your shipping options.
Returns
We want you to be completely satisfied with your purchase, but if you change your mind, you may cancel your order within 14 days of receipt for a full refund, provided the items are unused and in resalable condition.
Once your cancellation has been confirmed, you must return the items within 14 days, ideally in their original packaging.
Click & Collect
Order online and collect directly from our Sheffield OR Barnsley store. Once your order is ready, you’ll receive an email or phone confirmation with collection details. Please wait for confirmation before travelling to ensure your order is prepared.
Please have your order number ready to give to a member of staff when you arrive.
Sheffield Store:
GSH Retail Ltd
Unit 5, 230 Woodbourn Road
Sheffield
S9 3LQ
Barnsley Store:
GSH Retail Ltd
Unit 6, Rockingham Business Park
Rockingham Row, Birdwell
Barnsley, S70 5TW
Local Same Day Delivery Service
Our man in a van!
Same-Day Delivery Service
Enjoy fast, reliable, and fully discreet same-day delivery with Green Spirit when you order from our Sheffield store area.Whether you shop online or
in-store, we make getting your items easy,convenient, and secure.
Order Online
When placing your order through our website, simply select the Same-Day Local Delivery option at checkout.
- Free Same-Day Delivery on orders over £250.00
- Available customers within a 3-mile radius of our Sheffield store (S9 3LQ)
- Orders under £250.00 can still be delivered the same day for a £50.00
flat fee
Your order will be prepared and delivered directly to your
door the very same day, using our discreet delivery service.
Order In-Store
If you prefer to shop in person, visit our Sheffield
location to browse, purchase, and arrange delivery.
- Pay
in full for your items in-store - Choose
a delivery time and date that suits you best - Our
team will ensure a smooth and convenient handover
Discreet Delivery Promise
We understand the importance of privacy.
- All
our delivery vans are plain and unmarked, with no company
branding - Parcels
are packaged in plain or black wrapping for complete discretion
Delivery Requirements
To ensure everything runs smoothly:
- Customers
must be present at the agreed delivery time - Drivers
cannot wait for extended periods - If
the customer is not available, items will be returned to the store and a £50.00
redelivery fee will apply
Upon
delivery, we will request a order number, name and signature to
confirm receipt
Discreet Shipping
All orders from GSH Retail Ltd are packed securely and shipped in Plain unbranded boxes for your privacy. We understand that discretion is important, so no external markings or product details are visible on the packaging.
Each parcel is also wrapped in durable black film and sealed with fragile tape to ensure both security and protection in transit.
We take great care to make sure your order arrives safely, discreetly, and in perfect condition — every time.
Methods Of Payment
We accept a wide range of secure payment options for your convenience when shopping with GSH Retail LTD
You can pay using:
Visa, Mastercard, American Express, and Discover
Apple Pay, Google Pay, and Shop Pay
PayPal – Fast and secure online checkout with buyer protection
Klarna – Flexible payment options, including Pay in 3 instalments or Pay Later
Clearpay – Split your purchase into four interest-free payments
Weston Union– Supported for international customers
Cash In The Post - This is at your own risk! Please make sure it is signed for, tracked, and insured.
Manual Bank Transfer - Contact a member of staff to organise paying via bank transfer.
All transactions are processed securely through Shopify’s encrypted checkout. Your payment details are never shared directly with us.
Once your order is placed, you’ll receive an order confirmation email, followed by tracking details once your parcel has been dispatched.
Finance Options
We offer flexible finance options to make purchasing easier. You can choose to spread the cost of your order, all three options are interest-free and give you the flexibility to manage your payments in a way that suits you.
PayPal Pay in 3
PayPal Pay in 3 allows you to divide your purchase into three equal interest-free payments over two months. The first payment is made at checkout, followed by two automatic payments each month.
It is available on orders between £30 and £2,000, and approval is completed instantly through your PayPal account. You can view, manage, or make payments easily through the PayPal app or your online account.
Shop Pay
Shop Pay Installments lets customers pay for an order in smaller increments over time.When available, Shop Pay Installments is a great option to help you maximize your budget for orders between the following amounts, depending on your location:
Klarna
Klarna offers two flexible ways to pay. With Pay in 3 instalments, your order total is divided into three equal payments, taken every 30 days with no interest or fees when paid on time. Alternatively, you can choose Pay Later in 30 Days, allowing you to receive your order first and settle the balance within 30 days. Klarna provides instant approval at checkout, and all payments can be managed securely through the Klarna app.
Clearpay
Clearpay lets you spread the cost of your purchase into four equal interest-free payments, taken automatically every two weeks. The first instalment is paid at the time of purchase, and the remaining three are collected automatically over six weeks. Clearpay is available for orders between £30 and £1,000 and can be managed easily through the Clearpay app.
Important Information
All finance options are subject to eligibility and approval by the provider. Late or missed payments may affect your credit score, so please ensure funds are available when payments are due. For details about eligibility, limits, or payment schedules, please refer to the provider’s website or app.
Earning Points & Rewards
At GSH Retail we believe loyalty should be rewarded - Our Points & Rewards scheme allows you to collect points every time you shop and redeem them for discount codes to use on future purchases.
When you make a purchase through our website, you’ll automatically earn points based on the value of your order. These points are added to your account and can be saved or redeemed whenever you choose. Once you’ve collected enough points, you can exchange them for a unique coupon code that can be applied at checkout to reduce the cost of your next order.
Earn 5 Points for every £1 spent
Redeem 100 Points for £1 Store Credit
Your points never expire as long as your account remains active, and you can track your balance easily through your customer account dashboard. It’s our way of saying thank you for choosing GSH Retail Ltd
To redeem your points, simply log into your account, view your available balance, and follow the on-screen instructions to generate a discount code. Enter the code at checkout to instantly apply your reward.
AC Infinity MULTIFAN S3 Quiet USB Cooling Fan – 120mm
Keep electronics, controllers and other heat-producing equipment cool with the AC Infinity MULTIFAN S3 Quiet USB Cooling Fan. This compact 120mm fan delivers up to 52 CFM of airflow while producing just 18 dBA of noise, making it an excellent choice for applications where effective cooling and quiet operation are equally important.
The MULTIFAN S3 features an in-line multi-speed controller, allowing you to adjust the fan speed to achieve the ideal balance between airflow and noise. Premium dual-ball bearings provide a rated lifespan of up to 67,000 hours and allow the fan to operate either horizontally or vertically.
USB-powered operation, a generous 6ft cable and anti-vibration rubber feet make the MULTIFAN S3 a simple and versatile cooling solution for grow room equipment, controllers, computers, AV equipment, games consoles, amplifiers, routers and other electronics.
Key Features
- 120mm ultra-quiet USB cooling fan
- Delivers up to 52 CFM airflow
- Quiet operation at just 18 dBA
- In-line multi-speed controller with power switch
- Adjust airflow and noise levels to suit your application
- Premium dual-ball bearing system
- Rated lifespan of up to 67,000 hours
- Can operate horizontally or vertically
- USB powered for simple installation
- 6ft / 1.8m power cable
- Eight anti-vibration rubber feet
- Additional USB port for connecting compatible MULTIFAN units
- Up to four compatible fans can share a suitable USB power source
- Low 1.6W power consumption
- CE and RoHS certified
Powerful 52 CFM Airflow
The larger 120mm fan delivers up to 52 CFM of airflow, providing significantly more air movement than smaller compact USB fans while maintaining exceptionally quiet operation.
This makes the MULTIFAN S3 particularly useful for cooling larger pieces of electronic equipment or installations where additional airflow is required to prevent heat build-up.
Ultra-Quiet 18 dBA Operation
Designed with noise-sensitive environments in mind, the MULTIFAN S3 operates at just 18 dBA.
This provides effective continuous cooling without introducing excessive background noise, making it ideal for grow rooms, home entertainment systems, offices, bedrooms and other areas where quiet operation is important.
Adjustable Multi-Speed Controller
The included in-line multi-speed controller allows you to adjust the fan's performance depending on the amount of cooling required.
Increase the fan speed when equipment temperatures rise or reduce the speed when only gentle airflow is needed. This allows you to achieve the ideal balance between cooling performance and operating noise.
An integrated power switch also allows the fan to be switched off without disconnecting the USB cable.
Premium Dual-Ball Bearings
The MULTIFAN S3 features premium dual-ball bearings designed for reliable long-term operation.
With a rated lifespan of up to 67,000 hours, the fan is well suited to applications where regular or continuous cooling is required.
The dual-ball bearing design also allows the fan to operate in either a horizontal or vertical position, giving you much greater flexibility when positioning it around your equipment.
USB Powered for Easy Installation
The MULTIFAN S3 uses a USB power connection, allowing it to be powered from compatible USB ports commonly found on computers, games consoles, AV equipment and other electronic devices.
The generous 6ft / 1.8m power cable provides plenty of flexibility when positioning the fan around cabinets, equipment racks and grow room electronics.
Daisy Chain Multiple MULTIFAN Units
If additional airflow is required, compatible MULTIFAN S Series fans can be connected together.
Each fan features an additional USB connection, allowing up to four compatible MULTIFAN units to share a suitable USB power source. This makes it easy to expand your cooling setup without requiring individual power connections for every fan.
Anti-Vibration Rubber Feet
Eight large anti-vibration rubber feet help minimise movement and reduce vibration transferred between the fan and surrounding surfaces.
This further reduces operating noise and allows the MULTIFAN S3 to be positioned directly on top of or beside compatible equipment without unnecessary rattling or vibration.
Compact & Versatile Design
Measuring approximately 120 × 120 × 25mm, the MULTIFAN S3 provides impressive airflow from a relatively compact footprint.
The ability to position the fan either flat or upright makes it suitable for a wide variety of cooling applications, including areas where conventional equipment fans may be difficult to install.
Ideal for Grow Room Equipment
Electronic equipment inside grow rooms can generate considerable heat, particularly when multiple controllers, power supplies and other devices are positioned close together.
The MULTIFAN S3 provides targeted airflow that can help move warm air away from sensitive electronics without requiring a larger circulation fan.
Its compact dimensions, USB power and quiet operation make it particularly useful for adding extra airflow around grow room controllers and other electronic equipment.
Popular Applications
- Grow room controllers and electronic equipment
- Computers and computer components
- AV receivers
- Amplifiers
- Games consoles
- DVRs and media equipment
- Routers and modems
- Electronic cabinets
- Equipment racks
- Home entertainment systems
- Other heat-producing electronics
Technical Specifications
| Product | AC Infinity MULTIFAN S3 Quiet USB Cooling Fan |
| Model | AI-MPF120A |
| Fan Size | 120mm |
| Dimensions | 120 × 120 × 25mm |
| Maximum Airflow | 52 CFM |
| Noise Level | 18 dBA |
| Maximum Speed | 1,300 RPM |
| Static Pressure | 1 mm-H2O |
| Operating Voltage | 3–7V DC |
| Power Consumption | 1.6W |
| Current | 0.32A |
| Power Connection | USB |
| Cable Length | 6ft / 1.8m |
| Bearings | Dual Ball |
| Rated Lifespan | 67,000 Hours |
| Mounting Position | Horizontal or Vertical |
| Certifications | CE & RoHS |
MULTIFAN S1 or MULTIFAN S3?
Both models provide quiet USB-powered equipment cooling, but the main difference is their size and airflow capacity.
- MULTIFAN S1 – Compact 80mm fan delivering up to 26 CFM, ideal for smaller electronics and restricted spaces.
- MULTIFAN S3 – Larger 120mm fan delivering up to 52 CFM, ideal when more powerful equipment cooling is required.
For larger electronics or applications where greater airflow is required, the MULTIFAN S3 provides the additional cooling capacity while remaining exceptionally quiet.
Frequently Asked Questions
How much airflow does the MULTIFAN S3 produce?
The MULTIFAN S3 delivers up to 52 CFM of airflow from its 120mm fan.
How quiet is the MULTIFAN S3?
The fan has a rated noise level of just 18 dBA, making it suitable for applications where continuous quiet operation is important.
Can I adjust the fan speed?
Yes. The included in-line multi-speed controller allows you to adjust the fan speed to achieve the preferred balance between airflow and noise.
Can the fan be positioned flat?
Yes. Premium dual-ball bearings allow the MULTIFAN S3 to operate either horizontally or vertically, so it can be laid flat or positioned upright depending on the application.
Can multiple MULTIFAN units be connected together?
Yes. Compatible MULTIFAN S Series fans can be daisy chained together, with up to four compatible units sharing a suitable USB power source.
Is it suitable for continuous use?
Yes. The premium dual-ball bearing system has a rated lifespan of up to 67,000 hours, making the MULTIFAN S3 suitable for applications requiring extended or regular operation.
Powerful, Quiet & Compact Equipment Cooling
The AC Infinity MULTIFAN S3 Quiet USB Cooling Fan provides an excellent balance of powerful airflow, low noise and compact design. With up to 52 CFM airflow, 18 dBA operation, adjustable speed control and long-life dual-ball bearings, it provides reliable targeted cooling for grow room equipment, computers, AV systems and other heat-producing electronics.
USB-powered operation, flexible horizontal or vertical positioning and the ability to connect multiple MULTIFAN units make the S3 an easy and effective way to improve airflow and help protect valuable equipment from excessive heat.
