Boiler installation in Pontypridd, sized to your house.

Local knowledge

Specifying for elevation and exposure in Pontypridd

Pontypridd's valley-side terraces make incoming mains flow the first thing to establish before any boiler is specified. Properties higher up the hillside routinely have less flow available than a combi needs to serve more than one outlet, and no amount of extra boiler output compensates for water that is not arriving. Measuring it takes minutes and prevents an expensive disappointment.

Where flow is limited, a system boiler with a stored cylinder is generally the correct specification. It accumulates hot water at whatever rate the mains supplies and then delivers it properly when it is wanted. If an unvented cylinder is used it requires the appropriate qualification to install and an annual check thereafter. I would rather explain that trade-off than fit the appliance that is quickest to install.

Exposure decides the detail. Condensate pipework should run internally wherever the layout allows; where it must go outside it needs larger diameter, proper insulation and adequate fall, because exposed runs on these hillsides freeze reliably every winter. Flue terminal position needs to satisfy Building Regulations clearances from boundaries and openings, which on a stepped terrace with close neighbours is often the binding constraint. Gas work is carried out by Gas Safe registered, with a Benchmark record on handover.