Symphony Diet 3D 12i Evaporative Air Cooler - DIET3D12i has a rating of 4.1 stars based on 15 reviews.
Symphony Diet 3D 12i Evaporative Air Cooler - DIET3D12i

Quick Find Code: DIET3D12i

1 Year Warranty
Free Next Day Delivery!*
  • Air Cooler, humidifier and air cleaner great in well ventilated rooms and commercial spaces
  • Powerful tower air cooler with 12-litre tank for rooms up to 12m²
  • 3 fan speeds and oscillation setting for improved air flow: low, medium and high speed allowing adjustment between maximum cooling and quiet operation
  • Touchscreen control with magnetic remote and refill reminder for added convenience
  • Energy efficient 145W operation with inverter compatibility and decreased noise output

Symphony Diet 3D 12i Evaporative Air Cooler - DIET3D12i

Quick Find Code: DIET3D12i

1 Year Warranty
Free Next Day Delivery!*
  • Air Cooler, humidifier and air cleaner great in well ventilated rooms and commercial spaces
  • Powerful tower air cooler with 12-litre tank for rooms up to 12m²
  • 3 fan speeds and oscillation setting for improved air flow: low, medium and high speed allowing adjustment between maximum cooling and quiet operation
  • Touchscreen control with magnetic remote and refill reminder for added convenience
  • Energy efficient 145W operation with inverter compatibility and decreased noise output

£149.99
£139.95 (inc. VAT)

You save: £10.04

Show ex. VAT

PayPal Pay In Three

Pay in 3 interest-free installments of £46.65

Notify Me When Available

Please add quantity to a product to add it to cart

Product

Air Flow

For Rooms
Upto m2

Lourve

Empty Tank
Alarm

Storage
Capacity

Status

Price

Qty

Air Flow 840 m3/h

For Rooms
Upto m2
12 m²

Lourve Yes

Empty Tank
Alarm
Yes

Storage
Capacity
12 L

Sold Out

£139.95

(inc. VAT)

Attribute Value

Air Flow 600 m3/h

For Rooms
Upto m2
10 m²

Lourve Yes

Empty Tank
Alarm
Yes

Storage
Capacity
8 L

Sold Out

£99.99

(inc. VAT)

Attribute Value

Air Flow 960 m3/h

For Rooms
Upto m2
13 m²

Lourve Yes

Empty Tank
Alarm
Yes

Storage
Capacity
20 L

Sold Out

£169.99

(inc. VAT)

Attribute Value

Air Flow 960 m3/h

For Rooms
Upto m2
14 m²

Lourve Yes

Empty Tank
Alarm
Yes

Storage
Capacity
22 L

Sold Out

£169.99

(inc. VAT)

Attribute Value

Air Flow 1260 m3/h

For Rooms
Upto m2
14 m²

Lourve Yes

Empty Tank
Alarm
Yes

Storage
Capacity
30 L

Sold Out

£199.95

(inc. VAT)

Attribute Value

Air Flow 1500 m3/h

For Rooms
Upto m2
15 m²

Lourve Yes

Empty Tank
Alarm
Yes

Storage
Capacity
40 L

Sold Out

£129.95

(inc. VAT)

Attribute Value

Air Flow 1400 m3/h

For Rooms
Upto m2
16 m²

Lourve Yes

Empty Tank
Alarm
Yes

Storage
Capacity

Sold Out

£199.95

(inc. VAT)

Attribute Value

Product Overview

The Symphony Diet 3D 12i Evaporative Air Cooler is a compact yet powerful cooling solution designed for modern homes and personal spaces up to 12m². With a 12-litre water tank, this tower-style air cooler offers extended operation without frequent refilling, while the powerful air blower ensures consistent airflow across the room. Its slim vertical build makes it ideal for tight spaces, and the integrated castor wheels allow effortless mobility between rooms. Engineered from durable engineering-grade plastic, the cooler maintains a robust form while staying lightweight at just 7.3kg.

Designed for optimal performance in moderately hot or humid climates, the Diet 3D 12i uses high-efficiency honeycomb cooling pads on three sides, paired with a cool flow dispenser for uniform air distribution. The inclusion of i-Pure Technology elevates your air quality with a multi-stage filtration system that helps remove dust, allergens, bacteria, and odours from the air. Whether you’re working, sleeping, or relaxing, you’ll enjoy cool, clean, and breathable air that enhances comfort and supports well-being.

This model is built for convenience, with a pop-up touchscreen control panel, auto-swing louvres, and a magnetic full-function remote. You can easily toggle between three fan speeds (low, medium, high) and set oscillation preferences for personalized cooling. It also features an empty tank alarm, so you’ll never have to worry about running dry unexpectedly. Despite its feature-rich design, the cooler is energy-efficient, consuming only 145 watts, and is compatible with inverter power sources for operation during power outages.

From its quiet blower-based cooling system to its thoughtful features like the refill reminder and ergonomic build, the Symphony Diet 3D 12i stands out as a stylish and intelligent air cooling option. Whether used as an air cooler, humidifier, or air purifier, it offers an eco-friendly and cost-effective alternative to traditional AC systems—ideal for bedrooms, studies, or small lounges where clean, efficient cooling is a must.

Downloads

Download Symphony Diet 3D User Manual

Specification

Airflow840 m3/h
CastersYes
Collection NameDiet 3D
Continuous Water FeedNo
Cost Pence Per Hour5.1
Empty Tank AlarmYes
Filter TypeAnti-Bacterial Filter
Finish Or ColourWhite
Fixed Or PortablePortable
For Conservatories Upto m26 m²
For Rooms Upto m212 m²
LouvreYes
MPNDIET3D12i
Number Of Speeds3
Old GTIN8901791101742
power consumption115 W
Remote ControlYes
Smart Home CompatibleNo
Storage Capacity12 L
TimerYes
Voltage240 V
Depth300 mm
Height780 mm
Weight7.3 kg
Width320 mm

We always aim to dispatch your order for delivery on the next working day. Simply place your order before the same-day dispatch cut-off time. The countdown timer on the product page shows this cut-off time. While we work with trusted couriers, delivery times cannot be guaranteed.

Free UK Delivery on All Qualifying Orders Over £50. Orders under £50 will incur a £5.90 Delivery Fee.

This Excludes Delivery to the Scottish Highlands, Offshore Islands and Northern Ireland. These will be charged at an extra rate, which will be calculated at the checkout.

Heavier Items may also incur an extra fee.