Arrived onsite to investigate a water leak on a Viessmann propane boiler. Determined the leak was coming from the relief valve. Upon inspection, the internal expansion tank was found to have failed, causing the relief valve to discharge. Installed an external expansion tank and replaced the relief valve. Purged air from the system and verified proper operation. The system is operating correctly at this time. Provided estimates to perform an annual tune-up and flush domestic hot water heat exchanger.
