Needed a replacement water heater right away when ours broke. Our home protection policy covered it and the carrier referred the work to Guaranteed Mechanical. After I called and spoke to Manny who finalized the carrier's approval and scheduled the replacement the next day at 9 am. It was a very heavy heater (75 gal.) and the two mechanics worked all day to complete the job, successfully hauling the old one (very heavy) up up a narrow flight of stairs and bringing the new one down. They worked hard and did a good job. Bad news was that a union sprung a small leak the next day (Saturday)--good news was that Manny answered my call and sent Dan right over to fix it. Also, because i thought the heater was not working properly, I called again on Sunday and Manny again answered and send Dan again to make sure all was OK. So this firm was very responsive (so important) when I needed to talk to them and get service. In short, they did everything possible to make me a satisfied customer. read more