We have a unique boiler system in our condo and have been unable to get hot water in the shower, washer, dishwasher, etc without turning up the thermostat for several months. We had another company out here twice and they were unable to diagnose and fix the problem. Today, Robert from Applewood, was here and he installed a ball valve and check valve and rebuilt our shower valve and voila three hours later we have hot water everywhere in the condo again!! Thank you Robert for your expertise, craftsmanship, and professionalism! We appreciate you!