Welcome to the Heating Expert

Hi – I m John Sleeman.

My company installs energy efficient German and Dutch condensing boilers, and solar panels and we specialise in heating installations in North and Central London.

We install the best modern boilers, with the best modern controls and energy efficient heating systems in North London:

• Viessmann
• Vaillant
• Atag
• Remeha

High quality boilers  from companies like Viessmann, Vaillant, Atag and Remeha Broag, will last a long time and provide the maximum possible heating efficiency, if they are installed correctly with the right technical knowledge and modern control standards.

Well installed modern efficient heating systems, save money and minimise environmental harm . A Gassafe registered company, we design and install energy efficient central heating. Heating efficiency means your central heating works well and warms your home evenly. Plus, you use the minimum gas for the maximum benefit.

The aim of this website is to explain a bit about myself and my services, and what you will get if you use my company.