Great service. Came out same day and replaced my water heater. Mike(plumber) went above and beyond to get the job done and actually alerted me to another potential deadly situation that needed to be resolved by HVAC immediately. He spoke with the HVAC company that I called an explained what the situation was and that they needed to get it repaired right away. I would definitely recommend Mike and WHO to anyone who needs a new water heater. Price was lower then the company that was sent out by my home warranty company. they could not replace the water heater the same day which is why I called WHO. HAPPY, HAPPY, HAPPY. Lori Myers Naperville IL.