Even the best boilers cannot push heat through a choked system. Over time, your heating loop builds up harmful black sludge (magnetite), which clogs valves, creates cold spots in radiators, and forces your pump to work overtime.

If your water chemistry is off—whether it's high turbidity (cloudiness), incorrect pH levels or diminishing inhibitor your system is unprotected. Our simple 3-part test kit reveals exactly what is happening inside your radiators, allowing you to catch flow issues and sludge build-up before they become expensive breakdowns.