Best Reversing Valve in Mesa AZ

My heating system needed repair and after doing much research I decided to replace both my heating and air conditioning units. I had several name brand and unknown representatives give me quotes and write ups on what they would do. I decided to go with Duke based on friends personal experience, reviews, pricing and service contract. The Trane unit is excellent, quiet and much more efficient then I expected. The Duke installers were professional, polite and clean in their work area. My overall experience is a 10. I highly recommend using Duke for your HVAC needs.