Return to install boiler. Remove boiler for radiant heating. And tankless water heater for domestic hot water. Redid radiant flooring recycling to new combination boiler. Brand new waterlines for domestic hot water to combination boiler. We ran vent outside. Ran new gas line to boiler. Made sure customer had hot water on domestic side. And hot water on the radiant flooring. Tested to make sure no leaks at this time.