Business ProfileforAll American Irrigation Systems

Hello, I hired AAIS to install a Sprinkler System on my rental property on Dec. 27th. I believe they installed and signed off on a faulty backflow preventer, which cost me nearly $800 in excessive water bill charges due to a leak in the yard (at the backflow preventer valve). Since the backflow preventer was only less than 3 weeks old at this point, I thought they should replace it for free, but they refused. Instead, they offered to replace the new backflow preventer (that they installed initially) for $571. As a result of their negligence, I would be out a total of $1,300 on top of the $3,900 that I originally paid for the system. Since the city will refund a portion of the water leak, I am only asking for $500 for the water bill to be reimbursed, and I found another contractor who will replace the faulty backflow preventer for $420. Therefore, I am seeking $920 from AAIS and notified them of this request. They refused my request and blamed my tenants and the weather for the damage saying my tenants should've noticed the leak and shut the water off before it got so bad. They deferred blame for the faulty part because they said a freeze damaged it but could not prove to me the day of the freeze that it corresponded with the leak. The attached pdf is a full explanation of what happened with supporting evidence. I sent this pdf to the owner of AAIS and he would not address any of the points I made to support my case.