A straightforward like-for-like boiler replacement can often be completed much faster than a system conversion or relocation, but the exact duration depends on the property and scope. Keeping the boiler in the same position with a straightforward flue, gas supply and condensate route is usually the simplest case.
Extra time may be needed where the boiler is moved, pipework is altered, the gas supply needs upgrading, controls are changed, old system components need remedial work or access is difficult. Glasgow tenements and older properties can also present tighter access or less direct pipe routes than newer homes.
Doherty's process starts with the property and heating system rather than promising one fixed timescale for every job. A survey is the right point to confirm whether the job is a standard replacement or something more involved.
