Baxi 800 30kW Heat Only Boiler

Product Description

The Baxi 800 30kW Heat Only Boiler is a high-performance and reliable heating solution, designed for homes with traditional systems using a hot water cylinder. Combining powerful output with a compact cupboard-fit design, it offers flexibility for installation without compromising on performance.

Supplied with an industry-leading Adey Micro2 system filter, this boiler provides enhanced protection against sludge and debris, helping to extend system life and maintain efficiency. With a 10-year parts and labour warranty (when registered), it offers long-term peace of mind.

Engineered for ease of installation, the Baxi 800 range features a simple mounting system, flexible flue options, and requires no pump overrun or permanent live—saving both time and installation costs.

Why Customers Should Buy This Product

• High 30kW output ideal for medium to large homes
• Includes Adey Micro2 system filter for system protection
• 10-year warranty for long-term reliability
• Compact cupboard-fit design (fits 290mm deep cupboards)
• Very quiet operation (45 dB) for minimal disruption
• Flexible flue options (top or rear) for neat installation
• No pump overrun required simplifies installation
• Compatible with Megaflo cylinders for optimal system performance
• Suitable for open vent or sealed systems
• Trusted quality from Baxi

What’s Included

• 1 x Baxi 800 30kW Heat Only Boiler
• 1 x Adey Micro2 Compact System Filter

Key Specifications

• Brand: Baxi
• Range: 800
• Product Type: Heat Only Boiler
• Output: 30kW
• Fuel Type: Natural Gas
• ERP Rating: A
• NOx Class: Class 6
• Mounting Type: Wall Mounted

Dimensions:

• Height: 625 mm
• Width: 370 mm
• Depth: 270 mm

Performance:

• Heat Output: 30 kW
• BTU Output: 102,360 BTU
• CH Condensing Max Output: 30 kW
• Noise Level: 45 dB

Flue Options:

• Max Vertical (125mm): 12 m
• Max Vertical (100mm): 6 m
• Max Horizontal (125mm): 12 m
• Max Horizontal (100mm): 10 m

Features:

• LED display
• Compact cupboard-fit design
• Top or rear flue options
• No pump overrun required
• Compatible with Megaflo cylinders
• Suitable for open vent and sealed systems
• Solar compatible

Warranty:

• Standard: 2 Years
• Extended: 10 Years (when registered within 30 days)

Installation & Compatibility

• Suitable for traditional heating systems with hot water cylinder
• Ideal for replacing existing heat-only boilers
• Compatible with Baxi flues, controls, and accessories

What’s in the Box

• Heat Only Boiler Unit
• Adey Micro2 System Filter
• Installation Instructions

Important Information

• Heat only boiler – requires separate hot water cylinder and cold water storage tank
• No direct domestic hot water supply