Gas & Central Heating Engineers in London
By employing experienced professionals, we are able to offer a complete range of central heating and gas services, including fully comprehensive support on every type of domestic gas appliance, saving you the time of dealing with several parties.
Whether it's replacing a boiler or providing landlords safety certificates, the Grand Alliance team is on-hand to help. They also install domestic gas and electric kitchen appliances.
We also have a team of gas and central heating engineers, devoted to site installations, and providing quotes for residential refits.

Fitting sanitary ware

Fitting new boiler

▪ Old Boiler and flue – drain and remove
▪ Supply and fit new boiler and flue
▪ Flow and return pipe-work to combi boiler – alter existing as required
▪ Existing hot and cold water pipes connecting to boiler – make alterations as required
▪ Combi Boiler condensate discharge pipe-work – install new

▪ Install new timer
▪ Electric wiring to boiler – connect as per instructions
▪ Issue certificate and notify Gas Safe – as per regulations

▪ Remove old boiler and other rubbish to leave area clean

  Maintenance of domestic central heating
▪ New energy efficient boilers can save customers up to 40% off their heating bill by being more efficient.*
▪ Boilers are equipped with new type 'intelligent' controls which maximize efficiency by adjusting the start time to enable the house to reach the right temperature at the right time.
▪ Highest efficiency can be achieved by replacing a boiler that is over 15 years old.
▪ New regulations in building state that new boiler installations, where possible, must be higher efficiency condensing type.
▪ These boilers convert more than 90% of the fuel into heat.
▪ They can also save you up to £240 per year and reduce carbon dioxide emissions.*