Very impressed! I was referred to Sterling Services last fall when I found my aging water heater leaking on a holiday weekend. Within a few hours of calling Mike R. was able to install a new water heater. I was amazed at how quickly things were taken care (from initial phone call to completion of installation). Mike explained everything to me thoroughly and in addition to the new water heater I also opted for a service plan that Sterling Services offers. Very happy with the plan so far. Kent O. performed my HVAC tune up last week and I am now headed into the summer months confident in my system. Again, all work was explained thoroughly and professionally. I would highly recommend Sterling Services.