After our home warranty company referred 2 companies to replace our water heater that were either inept or unavailable, we contacted Home Depot. They use Delta Mechanical. The gentleman that answered the phone was very knowledgeable and professional. He tried to get a tech to our house same day but being afternoon, that didn’t work out. The next morning Ivan showed up as scheduled at 8am. He was very polite and got straight to work. He finished our vented gas water heater install in less than 2 hours!! We’re very very pleased with Delta Mechanical!