Can condensing boilers be fitted to existing systems?”
– Yes. Condensing boilers are suitable for replacing most existing boilers. However, because there are currently no condensing back boilers or heating-only floor standing boilers, they are likely to require boiler relocation. Controls are another consideration. Existing older systems may use gravity hot water circulation. This is much less efficient than pumped hot water. Condensing boilers only work on pumped hot water, so a system upgrade will be required in this case. As with every boiler replacement, cleaning and flushing the system before fitting a new boiler is very important to ensure it works reliably and efficiently.
