
Compatible with models:
AT0030 AIR-2D 12V/24V, AIR-4D 12V/24V, AIR-8D 12V/24V, AIR-9D 12V/24V
Power Mode
(When no external sensor is connected)
This mode delivers rapid heating by running the heater continuously at a fixed power level — perfect for quickly warming up your space.
Temperature Mode
(Requires external sensor connection)
This mode heats your space precisely to the desired temperature. The heater automatically adjusts its power, reducing output as your room approaches the set temperature for efficient energy use.
Note: For Air 2D 12/24V and 4D 12/24V models in the 6355, 6350, 6260, and 6265 series, a smart new algorithm ensures the heater powers down when near the set temperature. If the temperature rises above the set point, the heater temporarily switches off and restarts only after the temperature drops 3°C below the set point, ensuring optimal comfort and energy savings.
Ventilation Mode
This mode circulates air within your space, maintaining fresh airflow without heating.
Ventilation During Heating
(Requires external sensor connection)
This smart function maintains your set temperature efficiently. Once the desired temperature is reached, the heater pauses warming and switches to air circulation. If the temperature drops below the set level, the heater automatically resumes heating in ventilation mode to keep you comfortable.
Additional Information
Dimensions: 50 x 36 x 18 mm
Please note: AUTOTERM air heaters manufactured on or before 16.11.2016 do not support Ventilation mode. You can check your heater’s production date on the warranty card.
An external temperature sensor (assy.1458) is required for Power Mode and Ventilation During Heating functions to operate.
Warranty Terms
Mellor Solutions Ltd trading as Mellor Online is an authorised distributor of heating parts and heater kits for the vehicle and marine markets.
Warranty Coverage:
Additional Services:
Returning a Heater:
Customer Responsibilities:
Exclusions and Important Notes:
Returns Policy
Our returns policy applies to consumer purchases only (not business or trade orders).
Our returns policy does not cover items that fall under manufacturer warranties. If you believe your item is eligible for warranty service or you wish to return an item for a refund, please contact our support team or email us at sales@melloronline.co.uk.
Refunds and Cancellation Rights
You have the right to cancel your order within a 14-day cooling-off period, starting the day after you receive your items. Refund requests can be submitted within 30 days of the invoice date. Refunds will be processed within 14 days of receiving the returned goods.
Notification of Intent to Cancel
To cancel an order or request a refund under the UK Consumer Contracts Regulations 2013, you must inform Mellor Solutions Ltd trading as Mellor Online of your intention by phone, email, WhatsApp, or post within the applicable period. This is 14 days for cancellations and 30 days for refunds.
Upon receiving your request, we will send you a confirmation and authorization to return the goods. Please include your original invoice number with your return. All items must be in a resaleable condition
Upon receiving your request, we will send you a confirmation and authorization to return the goods. Please include your original invoice number with your return. All items must be in a resaleable condition.
Return Shipping
You are responsible for returning goods using an insured and trackable shipping method at your expense. We will only consider refund requests if there is proof of delivery to Mellor Solutions Ltd trading as Mellor Online from your chosen courier. Once we receive the goods, we will issue a full refund minus any delivery charges.
If you cannot arrange a return, please contact us. We can arrange collection for you, but a fee will apply, which will be deducted from your refund.
Please note that delivery charges from the original purchase are non-refundable, as the service is completed once the order is placed.
Processed and Dispatched Orders
Orders that have already been processed or dispatched cannot be canceled; however, they can be returned for a refund once received by the customer.
We strive to facilitate a prompt refund process upon receiving returned items.
Return Address
FAO: RETURNS
Mellor Online
139 Manor Road
Ossett
West Yorkshire
WF5 0LQ
United Kingdom
Specific Terms
Your Statutory Rights
Your statutory rights are unaffected by the above terms. Consumers, excluding business trade customers, are further protected under the UK Consumer Contracts Regulations 2013.
For any questions, please contact our support department before returning any items.
Shipping Information: UK & Worldwide
UK Delivery:
International Delivery:
ASK A QUESTION ABOUT THIS PRODUCT
This unit does not come with a bracket, only the adhesive sticky pads.
When you mention an alternative, please note this is only a basic controller with simple on/off operation and temperature selection. It will work with your model of heater, but it does not include a timer or fault code display.