My water heater gave us very hard time in 2016 winter. I called A Plus Air System. They send their Tech Nisar. He examined the heater and resolved the issue in half hour. I found him very professional technical, very quick, and expert in his work and I am enjoying hot water without any problem. Thanks to Nisar and A Plus Air System, awesome job done. I love to share the whole story. I observed water heater leakage this winter. Called the customer service # pasted on water heater. They were the installer and responsible for any damage as the water heater was 6 years old and was under warranty for 10 years. They send a technician he removed some parts and told me that water was leaking through heat exchanger he said that he will order new heat exchanger which may be received in 2 business days and part is free. He took $100 for the visit/inspection. They received the part after 5 business days and told me that I have to pay delivery charges $50 for the part and installation charges $1100. This was totally unexpected for me and I felt very bad, they should tell me the total cost in advance so that I decide in the beginning. Any way I cut the story short. We have to be without water in swear winter of January 2016 for 10 days. Then I called A plus Air system and got the issue fixed. Once again Thanks to A Plus Air System.