There are at least 5 areas why I rate Guthrie and Sons 5 out of 5 stars:#1 - A great front line.Amy and Courtney were always attentive, found someone to answer my questions, and excelled in coordinating visits to our house.#2 - Very knowledgeable staffZack provided all kinds of information that included budget concerns, energy use and quality. He thoroughly went step by step over the project inclusions and the cost.#3 - Direct involvement by the owners.Matt, one of the Guthrie owners, came with Zack to evaluate placement of equipment, duct work and other requirements.Photographs were taken so the project could be further reviewed before a crew was assigned.#4 - Hard working, polite and responsive crew.First on the scene were Cristian, Aleric and Levi.When more crew was needed, Jay and Carson came to join them.Stunningly, they ALL stayed until all my questions were answered and I felt comfortable using the newly installed HVAC.#5 Outstanding follow upMichael was excellent in arranging for completion details.Rob was awesome in completing everything that needed to be done.Guthrie and Sons is definitely 5 stars out of 5 stars.