Vaillant ecoTEC Plus 435 Open Vent - Boiler Only

Vaillant ecoTEC Plus 435 Open Vent - Boiler Only

£1,954.99 -Incl. VAT
£1,629.16 - Excl. VAT
In stock

ecoTEC Plus 35KW Open Vent Boiler, The ecoTEC Plus range of open vent boilers is extremely reliable. All models have the quality of components and manufacturing that Vaillant is known for, providing outstanding performance and build quality.

With continuous modulation and real combustion control by a multi-sensor system, Vaillant’s ecoTEC plus boilers achieve high efficiency at the lowest emissions. These boilers have an aluminium heat exchanger with wide waterways: an ideal choice for older properties.

They’re available with outputs of 12KW, so there’s an ecoTEC plus open vent boiler that can meet the heating requirements of varying house sizes.

Each one is ultra-quiet, a feature recognised by the Noise Abatement Society, which has awarded the ecoTEC plus range the Quiet Mark for its innovative design, specifically created to ensure a peaceful home for the customers.

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Returns Policy

You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).

You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).

If you need to return an item, simply login to your account, view the order using the 'Complete Orders' link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.


We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.

When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.

Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.