A conventional system changed to a combi boiler, the old cylinder out and the new boiler on the kitchen wall.
What is a combi boiler conversion?
A combi boiler conversion takes out the hot water cylinder and the loft tanks of a conventional or system boiler and puts one combi on the wall, heating water as it is drawn, off the mains. The old pipework is capped or removed, and London City Plumbers arranges the boiler itself with the gas engineers we work with.
The first photograph is the after. A white wall-hung boiler with a dial gauge and a lit display, against a bare patched strip of wall, with a black magnetic filter and red-handled valves beside its top.
The second is the old hot water cylinder in its cupboard, covered in yellow foam, with a red-handled valve, copper pipes and a small red pump on the wall beside it.
The third is the kitchen wall stripped back to bare board and plaster above white tiles. The round hole is where the old boiler and its flue were, and old pipes hang off the ceiling.
Conventional to combi
A conventional system, also called a regular or heat-only system, is a boiler, a hot water cylinder in a cupboard, a cold water tank and a small feed and expansion tank in the loft. The hot water is stored in the cylinder and reheated. A combi is one unit that heats the water as it is drawn, off the mains, with no cylinder and no tanks. The cylinder and the tanks come out, their pipework is capped or removed, the cupboard and the loft are cleared, and the hot taps are fed off the combi. Often the boiler moves and a new flue goes through the wall. A magnetic filter goes on the return and the old radiators are flushed. Our side is the cylinder, the tanks, the pipework, the wall, the filter and the controls. The boiler itself is something we arrange. Gas work is carried out by Gas Safe registered engineers we work with. They show you their Gas Safe ID card, and any certificate for the work comes from them.
That is the work behind a combi boiler conversion, a conventional boiler to combi, and much of a system boiler to combi.
One bathroom or more
Converting to a combi boiler suits a home with one bathroom.
Where more than one shower runs at once, or there is a big bath, a cylinder with a system boiler can be the better answer, and our boiler installations page says so.
The work
We look at the house, the hot water it uses and where a boiler would best hang.
Then the pipework is made good, the wall is prepared, and the controls are set and explained.
We wrote up a combi boiler on a bare wall and a new flue through the wall before.
Ring 07546 185778 and say what system you have and how many bathrooms, and send a photograph of the boiler and the cylinder if you can.
