The technician was very good-professional; I did ask him about the solar hot water heater that was installed with solar panels. This was installed at the same time as the A.C. unit in 2011 by Alaskan. Does this unit need to be checked by Alaskan? I am planning on having a roof put on and need to know who I contact -the roofer will not move the panels. The tech said he would check but no one has contacted me regarding this.