This will depend on the issue. However, many plumbers are also Gas Safe Registered, meaning they can undertake work on all aspects of boilers and central heating systems. It's best to look out for plumbers that display the badge of your boiler on their literature.
Bala
Bala is a market community as well as community in Gwynedd, Wales. Previously an urban area, Bala lies within the historical county of Merionethshire. It lies at the north end of Llyn Tegid, 17 miles (27 km) north-east of Dolgellau, with a population absorbed the UK Census 2011 of 1,974. It is little bit greater than one broad street, this being Stryd Fawr (High Street, literally "Great Street"). The High Street and also its stores can be quite active in the summer months with lots of tourists. Bala was placed as having the 20th greatest percentage of Welsh language audio speakers in Wales by electoral department, in the UK Census 2011. According to the census, 78.5% of Bala's population can talk Welsh.