Arrived, met with Jeffrey and Zulma. I proceeded to look over the work requested. I priced it out and they accepted. I cut off the gas to the building, disconnect the supply line and installed a gas valve shut off. I turned on the gas, purged the lines and turned on the stove. The stove operated appropriately. No issues. While looking over the gas line work, I noticed the the customers had an oil fired boiler which was converted to gas. The boiler is in very bad condition. I asked to look it over and provide a replacement cost. After working up a replacement cost and explaining all the details. They accepted to replace the unit. Customers were very happy and satisfied with the service.