Gas fired boilers run very clean so on a conventional chimney vented boiler you can get away with having it serviced and cleaned every 3 years or so as long as you keep up with it every 3 years. This will help the boiler run as efficiently as possible and it will help to avoid any possible break downs during the winter when it’s working hard.
On a gas fired wall hung tankless high efficiently boiler that condensates. Any boiler that is over %90 AFUE most likely condensates. it needs to be serviced every year for a few different reasons and is highly recommended by the equipment manufacturer.
Thr first service that needs to be done on all tankless equipment is pumping descaling chemical through its heat exchangers. Scale is like a white crust that builds up and causes corrosion, leaks and can clog passages. Basically it can destroy a brand new unit in a matter of a few years depending on water quality within only a few years. This is extremely important and should be done every year if you want to get many years of life from the unit. There are multiple filters that also need to be cleaned during this service.
An optional item that we highly recommend is a magnetic filter which removes pretty much everything that destroys these units from the water. It can give you about double the life of what you could get with that equipment. During the service this filter simply needs to be cleaned off and put back together. The small amount it cost to install one can double the life on your very expensive equipment.
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