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MPN: 7749866

Estimated Delivery: 3 - 5 Working Days

Baxi 800 Heating Only Boiler

Baxi 800 Heating Only Boiler


Regular price £1,238.71 Excl. VAT
£1,486.45 Incl. VAT
Sale price £1,238.71 Excl. VAT
£1,486.45 Incl. VAT
Regular price
*For business & Trade Accounts only.
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Key Information

Product Information

Baxi 800 Heating Only Boiler

The Baxi 800 Heating Only Boiler is a compact, lightweight and easy-to-install heat-only boiler from Baxi's 800 Series. Also known as a regular, open vent or conventional boiler, it is designed to provide reliable heating for a range of domestic properties. With its compact wall-mounted design, the boiler can be installed inside a standard kitchen cupboard where the installation requirements allow. Available in four power ratings — 16kW, 19kW, 25kW and 30kW — the range provides flexible options for properties with different heating requirements.

Available Power Ratings

The Baxi 800 Heating Only Boiler is available in the following outputs:
  • 16kW
  • 19kW
  • 25kW
  • 30kW
The range of outputs makes it easier to select a suitable boiler for different property sizes and heating demands. The correct output should always be determined according to the requirements of the individual heating system and property.

Compact Cupboard-Fit Design

The Baxi 800 has been designed with space-saving installation in mind. Its small dimensions and lightweight construction make it a practical choice for properties where available space is limited, including suitable standard kitchen cupboard installations.

Quick and Easy Installation

Installation has been designed to be straightforward, helping heating professionals complete the fitting process efficiently. The boiler also features versatile flue options, providing greater flexibility when planning the flue arrangement around the requirements of the property.

Flexible System Compatibility

The Baxi 800 Heating Only Boiler is suitable for both open vent and sealed heating systems, providing flexibility for different types of domestic heating installations. As a heat-only boiler, it can form part of a wider heating and hot water system where the appropriate additional components are installed.

Simplified Electrical Requirements

The boiler is designed without the need for pump over-run or a permanent live switch. This can help simplify the electrical requirements during installation while contributing to a straightforward setup.

Key Features

  • Baxi 800 Heating Only Boiler
  • Baxi 816 heat-only model within the 800 Series
  • Available in 16kW, 19kW, 25kW and 30kW outputs
  • Wall-mounted design
  • Compact and lightweight construction
  • Suitable for installation in a standard kitchen cupboard where permitted
  • Quick and easy to install
  • Versatile flue options for installation flexibility
  • Suitable for open vent systems
  • Suitable for sealed systems
  • No pump over-run required
  • No permanent live switch required

Frequently Asked Questions

What power ratings are available for the Baxi 800 Heating Only Boiler?

The Baxi 800 Heating Only Boiler is available in four power ratings: 16kW, 19kW, 25kW and 30kW. The appropriate output should be selected according to the heating requirements of the property and system.

Can the Baxi 800 Heating Only Boiler be installed in a kitchen cupboard?

Yes. Its compact dimensions make it suitable for installation in a standard kitchen cupboard where the installation meets the manufacturer's clearance, ventilation and other requirements.

Is the Baxi 800 suitable for open vent and sealed systems?

Yes. The Baxi 800 Heating Only Boiler is designed to be suitable for both open vent and sealed heating systems, offering flexibility for different domestic heating setups.

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.

Multiple Products from the Same Supplier

If you're ordering multiple products from the same supplier, your order will be dispatched together once all items are ready. This means the longest lead time will apply.

If you need part of your order sooner, please call us on 01202 113233. We can arrange a split delivery, although an additional shipping charge will apply.

Baxi 800 Heating Only Boiler

£1,238.71

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.