Best Double Hung Window Installation in Sacramento CA

After my posting that they had not responded to my call regarding a filter with water and rust stain on the filter, they phoned and set up an appointment for me.  
They sent out Ray, who installed my first heat pump/AC, and he checked everything out and serviced.  I had lots of confidence in him.  He blew out the line for the condensation to flow outside and now it is all working as should be.  If you are lucky enough to get Ray, he is very knowledgeable and can alleviate you anxiety.  Has good customer service skills as well as tech.