Skip to product information
1 of 3

MPN: 10020400

Vaillant Ecofit Pure 412 (Erp) Open Vent Boiler

Vaillant Ecofit Pure 412 (Erp) Open Vent Boiler


Regular price £1,030.38 Excl. VAT
£1,236.46 Incl. VAT
Sale price £1,030.38 Excl. VAT
£1,236.46 Incl. VAT
Regular price
*For business & Trade Accounts only.
Want it processed today? Order within:

Safe & Secure Payments

Payment methods
  • American Express
  • Apple Pay
  • Diners Club
  • Discover
  • Google Pay
  • Klarna
  • Maestro
  • Mastercard
  • PayPal
  • Shop Pay
  • Union Pay
  • Visa

Key Information

  • - Product type: Boiler.
  • - Output: 12 kW.
  • - Dimensions: 295 mm.
  • - Compatibility: Vaillant Controls and Accessories.
  • - Weight: 22 kg.

Product Information

Vaillant ecoFit Pure 412 (ErP) Open Vent Boiler

The Vaillant Ecofit Pure 412 (Erp) Open Vent Boiler is designed for properties with an existing cylinder-based heating system and a separate hot water store. It is a sensible replacement for a conventional boiler, giving homeowners reliable heating without needing to completely redesign the system. This regular boiler is suited to traditional home heating setups where dependable output and straightforward installation matter.

The Vaillant ecoFit Pure 412 open vent boiler is one of the most compact and versatile heat-only boilers available from Vaillant. Designed as an ideal upgrade for traditional open-vented heating systems, this boiler delivers high efficiency, reliable performance, and simple operation, making it a popular choice for homes with existing conventional heating systems. Thanks to its compact size and flexible design, the ecoFit Pure 412 can be installed in a variety of locations, including kitchen cupboards or small utility spaces. It also offers top or rear flue options, giving installers greater flexibility during installation. This boiler is compatible with the full range of Vaillant accessories and controls, allowing homeowners to build a complete and efficient heating system tailored to their property.

Key Features & Benefits

Compact Dimensions for Flexible Installation Ideal Upgrade for Open Vented Heating Systems Easy to Install and Operate High Efficiency Performance Top or Rear Flue Options Compatible with Vaillant Controls and Accessories A Rated for Heating Efficiency 2 Year Warranty (Up to 7 Years When Installed by a Vaillant Advance Installer)

Key Specifications

  • Product: Vaillant ecoFit Pure 412 (ErP) Open Vent Boiler
  • Product Type: Gas Open Vent Boiler
  • Model: ecoFit Pure
  • Central Heating Output: 12kW (40,000 BTU)
  • ErP Heating Rating: A Rated
  • Gross Weight (Including Packaging): 24kg
  • Net Weight: 22kg
  • Height: 600mm
  • Width: 375mm
  • Depth: 295mm
  • Warranty: 2 Years (Up to 7 Years with Vaillant Advance Installer, Subject to T&Cs)

Is This the Right Boiler for Your Home?

The ecoFit Pure 412 is designed for properties that already have a traditional open vented heating system with a hot water cylinder and cold water tank in the loft. It is a great option when replacing an older heat-only boiler, as it improves efficiency while working with the existing system setup.

FAQs

What is an open vent boiler?

An open vent boiler, also known as a heat-only or regular boiler, works with a hot water cylinder and a cold water tank usually located in the loft.

Is this boiler suitable for a small house?

Yes, the 12kW output makes this boiler suitable for smaller homes or properties with lower heating demand.

Can this boiler be installed in a cupboard?

Yes, the compact size and flexible flue options make it suitable for installation in a kitchen cupboard or small utility space.

Why Choose Us

At JJ Building Materials, we're committed to supplying quality building products at competitive prices, backed by the service and expertise you'd expect from an established independent merchant. Whether you're a trade professional managing large-scale projects or a homeowner taking on a DIY renovation, we're here to help you find the right products for the job.

As part of the JJ Roofing Supplies Group, we build on decades of experience supplying construction materials across the UK. We've expanded beyond roofing to offer a growing range of building materials, including timber, insulation, landscaping products, plumbing supplies, flooring, doors, bricks, fencing, garden buildings and much more – all available to order online with nationwide delivery.

We work with many of the industry's leading manufacturers to bring you trusted products that meet the highest standards of quality and performance. Our team is passionate about providing excellent customer service, competitive pricing and a straightforward shopping experience from start to finish.

When you shop with JJ Building Materials, you can expect:

  • Competitive prices on leading brands and quality products.
  • Nationwide delivery across the UK
  • A constantly expanding range of building and landscaping materials.
  • Friendly, knowledgeable customer support.
  • A trusted business backed by the JJ Roofing Supplies Group.

Delivery

Every order is personally reviewed by our experienced team to ensure everything is correct before dispatch. We offer delivery from as little as the next working day on selected products, so please refer to the dark blue Estimated Delivery box above for the expected delivery timeframe for this item.

We work with trusted manufacturers and specialist delivery partners to ensure your order arrives safely and on time. You'll receive tracking details once your order has been dispatched, and if we need to confirm any delivery details, one of our team will contact you directly to keep everything running smoothly.

Roof Tiles & Fittings:

We recommend ordering an additional 10% of roof tiles to allow for any breakages that may occur during delivery or handling. Roof tiles are naturally fragile, and having a few extra on site helps prevent delays and ensures your roofing project can be completed without interruption.

Documentation

Vaillant Ecofit Pure 412 (Erp) Open Vent Boiler

£1,030.38

Can I collect this product from a local branch?

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.