They talk a good sales pitch but their customer service is terrible. I took infrared pictures before and after. Cameron said their work is guaranteed. Well they missed some areas when blowing in attic insulation and despite being promised by Colleen that i would get a call back from Ken or Cameron no one ever called back, It also took several calls to get my final invoice despite them knowing i needed it to apply for rebates(i got it a month after work was done). I figured a bigger outfit like them would be a safe bet, i was wrong. Crew on day of work was polite. FYI, in colorado you don't need more than R-50 which is the lowest they quote at, law of diminishing return....anything more and its a waste of money, getting up in the R-60 to R-90 will not save you more money on heating bills.