Boiler service to new building regs part L. will gas engineers comply and will customers pay for it. - Смотреть видео или скачать видео в MP4, музыку MP3 на телефон или компьютер
Derek in this video services a gas boiler to the new part L of the building regulations. in the video Derek strips the boiler and cleans the heat exchanger and tests the central heating water quality.
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