

The AUTOTERM Planar 2D is a compact and efficient diesel heater designed to deliver reliable warmth in even the harshest environments. Built with a brushless electric motor rated for up to 12,000 hours of continuous operation, it combines durability with low running costs. With proven performance across marine, off-grid, and commercial settings, Planar heaters are backed by a European warranty and civil liability insurance for total peace of mind.
The Planar 2D heater is versatile and well-suited for:
Vehicles: truck cabs, commercial vans, campervans, and cargo compartments
Marine use: boats and yachts up to 33ft (10m) in length
Off-grid spaces: cabins, workshops, and small indoor areas
With a heating output range of 0.8 kW – 2 kW, the unit circulates up to 75m³ of warm air per hour while maintaining excellent fuel economy at just 0.1 – 0.24 litres of diesel per hour. Available in both 12V and 24V models, it’s a proven solution for reliable heating wherever you need it.
Planar 2D Diesel Heater (2kW, V2019/20)
Choice of controller (select above)
Complete wiring harness and connections
1m stainless steel exhaust pipe (24mm ID)
Air intake hose with silencer
Exhaust silencer
Fuel standpipe
12V ultra-quiet fuel pump
Control panel wiring
1m of 60mm air ducting
1 air outlet (60mm, 45°)
2x Kale W4 stainless steel ducting clamps
Exhaust pipe heat insulation
Air entry and outlet grilles
All necessary fittings, clips, and screws
Full installation manual
36-month warranty (24 months standard + 12 months from Mellor Online)
E2/R122 Approved
E2/R10 Approved
Heating Power: 2 kW
Fuel Type: Diesel
Voltage Options: 12V / 24V
Applications: Vans, Campers, Trucks, Off-Highway Vehicles, Boats & Yachts
Altitude Performance: Built-in high altitude sensor (up to 4,200m)
We can supply bespoke kits tailored to your exact requirements – contact our sales team to discuss options.
Need extra parts or accessories? Call us on 01924 274774 and we’ll be happy to help.
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:
| Operating manual (EN) |
| Installation instructions (EN) |
| Repair manual (EN) |
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