Excellent in all aspects from our consultation, to helping with rebates.Would highly recommend.

The whole crew were very professional and polite. They installed the new air conditioning system in two days which I thought it was fast. There were last minute issues when it came down to running the system, but Arthur, Paulo and Douglas stayed late to finish the job, also showing me how to operate the system. good job overall.

I hired SumZero to install three air source heat pump systems in our home after having requested estimates from many other companies. They were very detail-oriented, honest about what the new systems could and could not do, the price was fair, and the installation went smoothly. This is a very professional company.