The Vaillant ecoTEC Plus 836 Combi Boiler is a high-performance, all-in-one heating and hot water solution designed for modern homes with higher demand. As part of Vaillant’s latest ecoTEC Plus range, it features a refined internal layout that provides easy access to key components, making installation, servicing, and maintenance quicker and more efficient.
This updated model includes a sleek semi-touch interface, giving both installers and homeowners a smooth and intuitive experience. The guided commissioning wizard simplifies the setup process, while the clear display and easy navigation make everyday use straightforward. With its familiar footprint, pipe connections, and flue positioning, the ecoTEC Plus 836 is also ideal for simple, like-for-like replacements.
Performance is driven by advanced Vaillant technology. IoniDETECT continuously monitors gas combustion, allowing the boiler to operate across a wide modulation range of up to 1:10. This ensures the system only uses the energy it needs, improving efficiency and helping to reduce running costs. linBUS technology further enhances performance by providing accurate readings of flow rate and pressure via the internal pump.
Designed with flexibility and future-proofing in mind, the ecoTEC Plus 836 supports automatic LPG conversion on most outputs, completed quickly through the interface without requiring additional parts. It is also hydrogen-ready, meaning it can safely operate with up to a 20% hydrogen blend, helping prepare your home for future energy changes.
Fully compatible with Vaillant’s range of controls, flues, boiler protection kits, and renewable technologies, this combi boiler can be tailored to suit a wide variety of systems. It is also smart home ready, working with the myVAILLANT connect internet gateway for app-based control and remote access (additional equipment may be required).
Key Features & Benefits
Refined internal layout for easier installation and servicing
Intuitive semi-touch interface with guided commissioning wizard
IoniDETECT technology for intelligent combustion monitoring
Wide modulation range (up to 1:10) for improved efficiency
linBUS technology for enhanced system accuracy and performance
Automatic LPG conversion (on most outputs) with no additional parts required
Hydrogen-ready for up to 20% hydrogen blend
Smart home ready with myVAILLANT connect (additional equipment required)
Compatible with Vaillant controls, flues, and accessories
Familiar footprint for easy replacement installations
Up to 10-year warranty available with Vaillant Advance Installer
Technical Specifications
Product Type: Gas Combi Boiler
Model: ecoTEC Plus 836
GTIN: 4024074906712
Height: 720 mm
Width: 440 mm
Depth: 352 mm
Weight (Net): 37.4 kg
Gross Weight: 40.5 kg
Warranty: 5 years (extendable to 10 years with Vaillant Advance Installer)
Frequently Asked Questions
Is the ecoTEC Plus 836 suitable for homes with high hot water demand?
Yes, this model is designed for larger households or properties with higher hot water usage, providing strong and consistent performance.
Can this boiler be connected to smart controls?
Yes, it is smart home ready and can be paired with the myVAILLANT connect gateway, allowing remote control via an app when used with compatible systems.
What makes this boiler energy efficient?
The combination of IoniDETECT technology and a wide modulation range allows the boiler to adapt to demand, reducing energy waste and improving overall efficiency.
Absolutely. Check availability at your nearest branch during checkout or contact us directly.
Do you offer bulk pricing or trade discounts?
Yes, we offer competitive rates for trade customers and bulk orders. Contact our team for a tailored quote.
What if the product arrives damaged?
Please notify us within 48 hours of delivery. We’ll arrange a prompt replacement or refund as needed.
How fast is the delivery time?
Most items are delivered within 2–5 working days, depending on stock and location. Some products may take longer times.
What is the Return Policy?
We accept most returns within 14 days of delivery, provided the items are unused, in their original packaging, and in resalable condition. Please contact our customer service team to arrange a return or discuss any concerns.
Over 35 Years of Trading
+£3M Stock Value
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10 Branches Across London & South East
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