TJ PLUMBING SHEFFORD LIMITED on Instagram: "🌊 Following on from our recent boiler upgrade in Biggleswade, we carried out a power flush to help the heating system run as efficiently as possible. Over time, sludge, rust, and debris can build up inside pipework and radiators, restricting water flow and causing cold spots, noise, and poor performance. We push Adey Vibro through the system to agitate the radiators to break down stubborn sludge. As part of the process, we isolate each radiator and ta