Just had Kempton and Self install a new hybrid, heat pump water heater, replacing an old gas unit. Arrived early on scheduled time and completed the job amidst working next to HVAC and electricians. Were very flexible working around the others. Cleaned up afterwards. Technician came back next day to check out the installation, answer any questions I had about the unit working, explain how the heat pump water heater differed from a standard electric unit and the importance of cleaning the filters. Office staff stayed on top of the job, and answered all my questions about rebates, etc. Everyone friendly and helpful. Couldn't ask for better more attentive service..... Just hope the water heater works as well as the installation. My now go to people for help with plumbing projects.