Hello,
My girlfriend and I will soon take over her grandfather’s house and plan to do some renovations before moving in. This includes the 40-year-old roof and the 20-year-old oil heating system, which we would like to replace with a gas condensing boiler.
Her grandfather had a solar thermal system installed on the roof about 10 years ago. Recently, I checked the basement and found that the system had no pressure at all. He says he was able to turn off the heating completely during the summers in recent years.
We’re wondering if it’s possible to have the system checked for leaks, and more importantly, does it even make sense to connect a 10-year-old system to a new roof and a new heating system? What do you think?
My girlfriend and I will soon take over her grandfather’s house and plan to do some renovations before moving in. This includes the 40-year-old roof and the 20-year-old oil heating system, which we would like to replace with a gas condensing boiler.
Her grandfather had a solar thermal system installed on the roof about 10 years ago. Recently, I checked the basement and found that the system had no pressure at all. He says he was able to turn off the heating completely during the summers in recent years.
We’re wondering if it’s possible to have the system checked for leaks, and more importantly, does it even make sense to connect a 10-year-old system to a new roof and a new heating system? What do you think?
There should actually be some pressure due to the water column from the roof to the basement. After 10 years, depending on the construction type, the fluid should be replaced anyway. Usually, the system leaks at the connection on the collector, which can be easily fixed with a new gasket. Unlike photovoltaic systems, the prices for these systems have not dropped significantly, nor has their efficiency increased, so it is still worthwhile to operate them—unless a photovoltaic system is planned to cover the entire roof and would be in the way.
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