Lennox warm air CH system

[osh]

My parents have a Lennox warm air CH system that is 30+ years old and is in need of a service. It's a straight forward system that never goes wrong. The guy that used to do it has died.
Does anyone have any recommendations for an exprerienced company that can service it? They are based in North London.

 

[mountainman]

Go on the Gas Safe website and put their postcode into the search box.
Look through the suggested engineers and find one with DAH1 on their competencies.