Check the Gas Safe Card Gas Burner Power Flushing Machine


We specialise in Landlord Gas Safety Certificates, Electrical PAT Testing, Boiler Servicing, Breakdowns, Power Flushing, Boiler Installations & Plumbing. We are committed to training our team to the highest standard.


Who are we?

We are a family run gas, plumbing & heating firm covering the areas of Ruislip, Pinner, Rayners Lane, Harrow, Northwood, Hayes, Uxbridge, Watford, Rickmansworth, Chorleywood, Kings Langley, Hemel Hempstead and surrounding areas.



I have been using John Mac Heating for some 3 years now, initially recommended by an agency in Pinner, and have always been pleased with the prompt and efficient service. I would be happy to recommend him to others. - Sheila Smith

Carbon Monoxide

Carbon Monoxide is a highly poisonous gas...


John Mac Heating are specialists in both the private and public rental property sector...

Heating & Electrical

Read about our Heating and Electrical services...

Other Services

Find out more about the other services we offer...

Trade Accreditations

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0208 420 2344