Eberspacher Marine Hydronic 3 D4E 12v 4kW (Diesel) with Brushless Motor
The Eberspacher Marine Hydronic 3 D4E is a third-generation, diesel-powered water heater offering 4 kW of heating power, designed for use in passenger vehicles and transporters. This heater effectively warms the vehicle's interior, heats the engine, and defrosts windows. Its compact design is ideal for tight installation spaces, with the water pump and fuel metering pump installed separately. The fuel can be drawn directly from the return line using the pressure-resistant metering pump, eliminating the need for a separate fuel tank extractor, which significantly reduces installation time.
For optimal performance, the heater can be paired with an optional room temperature sensor connected to the EasyStart Timer. This setup automatically calculates the heating start time based on the measured room temperature and selected heating level (ECO or HIGH). For more information, please contact us.
This is a genuine Eberspacher product with a 36-month warranty. The standard heater is suitable for operation up to 1500 meters in altitude. For use above 1500 meters, the EasyStart Pro controller is recommended.
Vehicle/Marine 12 Volt 4kW Kit Contents:
Applications Include:
Custom kits are available and can be built to order. Please contact our sales team to discuss your specific requirements.
Choose your controller from the dropdown menu above.
Warranty Terms
Mellor Online is an authorized 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 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.
Notification of Intent to Cancel
To cancel an order or request a refund under the UK Consumer Protections (Distance Selling) Regulations 2000, you must inform 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.
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 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 are unaffected by the above terms. Consumers, excluding business trade customers, are further protected under the UK Consumer Protection (Distance Selling) Regulations 2000.
For any questions, please contact our support department before returning any items.
Shipping Information: UK & Worldwide
UK Delivery:
International Delivery: