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"I live in Maryland, and I knew Mr. Zhang for more than 10 years. I had him repair and change the AC system for my prior single house; recently he replaced the AC and water heater for us; I’ll have him change our second floor AC in the future. Mr. Zhang has a great amount of experiences. He is a very knowledgeable person, skillful engineer, and Mr. Zhang is very reasonable for his prices. I trust him very much, and introduced him to my friends."


Weihong, MD

"I'm Yan, who lives in Fairfax, Virginia. I had a rental property as condominium. It's extremely hard to change an AC unit. I have been asking a few contractors to provide a few quotes. Mr. Zhang was the best in terms of pricing plus service. He explained to me the potential issues related with my old modeled AC unit and why it's hard to find a replacement. After a few visits, he replaced the unit. My tenant is extremely happy with the service."

Yan, Fairfax, VA