Central Heating & Gas Appliances

Here at John Mac Heating we are specialists in all things Gas!

We are registered with Gas Safe Register, and have many years’ experience repairing, servicing and installing boilers, gas fires, cookers, water heaters & warm air units.

Remember to ask to see the Gas Safe ID card, and ask to check the back of it. Even if someone has a Gas Safe card, they are not qualified to work on all types of gas – it only takes a second to take a look at it, see our carbon monoxide page for an example.

We provide the following services and if you do not see what you require here, just give us a ring on 0208 420 2344 and we can advise you.


  • Free advice
  • Boiler Installations & power flushing 
  • Landlord Gas Safety Inspections
  • Boiler Servicing for all manufacturer’s – Your warranties are not covered by the manufacturer unless annual services are carried out
  • Boiler breakdowns and upgrades
  • Install new pumps
  • Replace Water tanks
  • Repair, or supply, fit and replace water heaters 
  • Repair, service & install unvented hot water systems 
  • Install thermostats, timers and all heating controls- to make your current system run more effectively for you
  • Install cookers & fit cooker safety chains
  • Install & service gas fires
  • Install & service warm air units


We carry a large stock of parts on the van, so we can usually get your system up and running straight away, and if not, we use specialist plumber wholesalers who will usually get the part in the next day.


We guarantee all our work, and carry out any work to your property with the upmost professionalism, the way we would want it done in our own home. 


Call us today on 0208 420 2344 or Contact Us