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Baxi 636 Combi Gas Boiler

From: £2,149.00

Get a quote to install this boiler.




636 Combi Gas Boiler

Is Condensing


Efficiency Rating


Band Rating

A Rated

LPG Compatible


Standard Warranty

7 years

Central Heating Max. Output

26.4 kW


Wall Mounted

Flow Rate

15 l/min

ERP Rating

A Heat A Water

Hot Water Max. Output

36.8 kW

Product Description

The Baxi 636 is a combi boiler that runs on natural gas and is a highly reliable heating system for medium-szied properties.

How efficient is the Baxi 636?

This is a highly efficient boiler that could help to lower your energy bills thanks to a seasonal space heating efficiency of 93% and ErP A-rating for heat and hot water.

Is the output rating suitable for my home?

Combi boilers have 2 output ratings to look out for: central heating (CH) output and domestic hot water (DHW) output. The Baxi 636 has a CH output of 26.4 kW and DHW output of 36.8 kW making it well suited to homes with up to 20 radiators and 2 bathrooms.

Are there any other options available in the Baxi 600 range?

The Baxi 600 range includes a wide range of boilers to help you find a suitable heating system for the heating and hot water demands of your property.

In addition to the 636 combi boiler, there’s also the 624 and 630 which have lower output ratings. If your property has multiple bathrooms and a high demand for hot water then a cylinder that stores hot water could be needed. This means having a system or regular boiler installed – both of which are included in this range.

Is a combi boiler suitable for my home?

Rather than storing domestic hot water in a cylinder, like system and regular boilers, combi boilers heat and deliver hot water on demand as and when needed. This means that combi boilers are best suited to homes with a low to moderate demand for hot water and removes the need for any additional tanks or cylinders.

How long is the warranty period?

Featuring a lengthy 7-year warranty, you’ll have the peace of mind that the manufacturer will look after you long after installation.

What are the key features of the Baxi 636?

Some of the features of this boiler include a low lift weight of 29.5kg, making the boiler easy to install which can help to save you both time and money on the installation, the pipes are located behind the facility within the boiler casing to keep it tidy, there’s an easy fill permanent filling link which makes it easier for householders to top-up the system, brass hydraulic blocks and openTherm Interface, a simple hanging bracket, choice of flue lengths and full compatibility with uSense smart controls. As well as all of this, the boiler is Boiler Plus compliant.

How big is the Baxi 636?

A compact unit, that comes wall mounted, it’s able to fit inside a 290mm deep cupboard so you can be sure you are going to save that much-needed space in your home.

All Baxi 600 combi boilers have been certified to run on a hydrogen blend of 20%.