I agree with the previous comments about the unprofessionalism of this business. Scheduling is a nightmare, and Al gets very irritated if you ask for timing so they can access your roof.
The owner appears very unstable based on email exchanges; they lost our payment, then found it. In the meantime, they refused service, and when they found the check we provided, they asked to cash it in exchange for servicing manufacturer defects with Solar Industries collectors. They are exclusive in the area so I would look elsewhere as you are stuck with someone who is a little off.
They don’t stand by their product install and warranty from Solar Industries (Aquatherm). We have defects in the installation, including leaks on our roof from the collectors after 4 years, and now the valve is not working.