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 In most cases, no. During a new boiler installation in Essex , the heating and hot water are turned off for the duration of the job. Technicians cut power and gas before they start the installation. They also drain parts of the system to remove the old boiler and connect the new one. If the boiler was still on, it could leak, overheat or trip a fault.  How long will you be without heat and hot water? A straight swap in the same spot can be done in a day. If the boiler type changes (say, from a system boiler to a combi), there is extra pipework and new controls. That tends to run to two or three days. If the boiler is moving to a new location, the job can stretch to four days. Most of that time is spent routing new pipes and filling any holes drilled through walls or floors.  Can you do anything to minimise the disruption? You cannot run the boiler while it is being replaced. What you can do is choose the replacement days. Some people schedule the work in spring or...

 Viessmann boilers are designed for efficiency and longevity. But like any other appliance in your home, it performs optimally with proper care and maintenance. Regular upkeep ensures safety and reliability and prolongs the life of your boiler. Here are some crucial steps that you can take to keep your Viessmann system operating durably and at its peak performance: Monitor Boiler Pressure Viessmann boilers operate at a pressure between 1.0 and 1.5 bar. Anything lower can lead to inefficiencies, and higher pressure can damage components. Keep an eye on these levels and top up the system when needed, as described in the user manual. Keep the Condensate Pipe Clear Condensate pipes can freeze and shut down your boiler, especially in winter. To avoid this, insulate external pipes, run the system periodically in cold temperatures, and gently thaw any frozen pipes with lukewarm water. These are also part of annual boiler repairs in Southend , Essex, and surrounding areas, so you can a...