These folks wrote the handbook on excellent customer service practices! I have used NW Energy Systems for six years for yearly maintenance and then again for an emergency house-call last winter. Quick and top-notch! In addition, their staff went out of their way to send me information on my water heater that was not even their product/concern, really. I was able to troubleshoot the issue and fix it myself. Prompt, compassionate, organized and professional! Thank you for your service to our community.