Best Crack/Hole Sealing in Phoenix AZ

Ideal Energy was one of the companies that provided me a quote to simply supplement insulation in my attic. The quote was over the phone with no visual inspection.  They recommended removing 1/2 the insulation in the attic with no clear explanation why that was recommended (at a cost of over $2K).  The quote was significantly higher (almost 5 times) than the other companies that quoted me.  My interactions with them were very limited, and they were professional.