Arrived onsite customer had informed me that she had a leak. Discovered that it was coming from the temperature and pressure relief valve as it had failed. And the dhw expansion tank had failed also. Presented pricing customer approved the pricing. Performed work. Discovered a small leak on the boiler expansion tank presented pricing customer approved, so I performed the work. After I swapped out those parts I filled the system up to 15 psi, turned power on to the boiler. And had the customer confirm that she had hot water, and had them give a call for heat. Customer informed me that she had hot water, and I watched as a call for heat on the heating side of things was performed. No error codes or failed attempts at a call for heat. Thank you for choosing CPI Plumbing and Heating Inc.