AC INFINITY

AC INFINITY CLOUDLINE PRO T4, Quiet Inline Duct Fan System with Temperature Humidity VPD Controller, 4-Inch

£144.95
Tax included. Shipping calculated at checkout.
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Pickup available at Bansley Store

Usually ready in 24 hours

Payment Methods
American Express
Apple Pay
Bancontact
Diners Club
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Google Pay
iDEAL Wero
Maestro
Mastercard
PayPal
Shop Pay
Union Pay
Visa
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 Delievery 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 selectthe Same-Day Local Delivery option at checkout.

  • Free Same-Day Delivery on orders over £250.00
  • Availato 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 -

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 CLOUDLINE PRO T4 – 4” Inline Fan with Temp, Humidity & VPD Smart Controller (WiFi App Ready)

Quiet Ventilation Meets Smart Climate Control.

Engineered for total environmental mastery, the AC Infinity CLOUDLINE T4 PRO delivers intelligent, whisper-quiet airflow control for grow tents, grow rooms, AV closets, and air circulation projects. This advanced 4” inline duct fan features a next-gen EC motor, mixed-flow design, and the powerful CONTROLLER 69 PRO—giving you automated control over temperature, humidity, and VPD right from your phone.

Whether you're a seasoned hydroponic grower or managing a high-performance AV setup, this fan offers everything you need for efficient, silent, and responsive airflow.


🌟 Key Features & Benefits

  • Smart Environmental Control – Now with VPD 📲🌡️
    Equipped with the CONTROLLER 69 PRO, set dynamic fan speeds based on temperature, humidity, or VPD triggers. Use timers, grow cycles, or scheduling—and control everything remotely with the AC Infinity WiFi App.

  • Quiet Yet Powerful EC Motor 🔇⚡
    Pulse Width Modulation (PWM) control enables ultra-smooth, low-RPM performance with minimal heat and noise—perfect for discreet grow spaces and sensitive environments.

  • Mixed Flow Design for Max Air Pressure 💨
    Advanced stator blade and dual hydrodynamic wind circles deliver 205 CFM of powerful airflow, even in high-resistance setups with carbon filters or long duct runs.

  • Modular & Maintenance-Friendly Design 🛠️
    Easily detachable motor box makes cleaning quick and hassle-free. Durable build and dual ball bearings rated for 67,000 hours ensure long-term reliability.

  • Part of the UIS™ Smart Ecosystem 🔗
    Fully compatible with all AC Infinity UIS devices, including fans, lights, and plug-in modules. Control up to four devices simultaneously from one controller.


📐 Tech Specs at a Glance

  • Duct Size: 4”

  • Airflow: 205 CFM

  • Noise Level: 28 dBA

  • Static Pressure: 223 Pa

  • Max Speed: 2800 RPM

  • Motor Type: EC Motor with PWM Control

  • Max Power Draw: 28W

  • Average Power Use: 21W

  • Voltage: 100–240V AC

  • Ingress Protection: IP44 (dust and splash resistant)

  • Mounting Positions: Horizontal or Vertical

  • Life Expectancy: 67,000 Hours


📦 What’s in the Box

  • 1 x CLOUDLINE T4 Inline Fan (4")

  • 1 x CONTROLLER 69 PRO with WiFi App Access

  • 1 x UIS to 4-Pin Adapter

  • 1 x 12 ft Climate Sensor Probe

  • Power Supply, Mounting Hardware & Manual


Perfect For:

  • Hydroponic grow rooms & tents 🌱

  • Odour control & air filtration 🌀

  • Server racks & AV cooling closets 🎛️

  • Heat transfer in small rooms or attics ❄️


🚀 Unlock Smart Grow Room Automation Today –

Shop the CLOUDLINE PRO T4 now at Green Spirit Hydroponics!

Feature / Model A4 – Basic S4 – Pro T4 – Smart H4 – Fungiculture
Airflow (CFM) 205 CFM 205 CFM 205 CFM 212 CFM
Noise Level 28 dBA 28 dBA 28 dBA 27 dBA
Static Pressure 251 Pa 251 Pa 251 Pa 324 Pa
Max Speed (RPM) 2800 RPM 2800 RPM 2800 RPM 3000 RPM
Speed Control 10-Speed Dial 10-Speed Dial Smart/Auto (WiFi) 10-Speed Dial
Controller Type Basic Speed Dial Advanced Speed Dial CONTROLLER 69 PRO Basic Speed Dial
Smart WiFi App Access
Humidity & VPD Monitoring
Custom Scheduling / Timers
EC Motor (PWM Controlled)
Mixed Flow Design
UIS™ Compatible
Ingress Protection Rating IP44 IP44 IP44 IP65
Mounting Options Horizontal / Vertical Horizontal / Vertical Horizontal / Vertical Horizontal / Vertical
Fan Bearings Dual Ball Dual Ball Dual Ball Dual Ball
Lifespan 67,000 Hours 67,000 Hours 67,000 Hours 67,000 Hours