Best in Phoenix AZ

I have used them for plumbing and A/C. Telephone reps are very friendly and helpful. Techs are also very friendly and helpful. I think there service is excellent.

The only reason I have to give them four stars is that they made mistakes installing my A/C unit. They were very courteous and respectful of my home but they made mistakes that didn't become clear until several months after the install.

Luckily, they have come back to resolve those mistakes twice over the past 9 months. Both times, there was no charge and it was a considerable amount of work.

I did sign up for the comfort program where they come twice a year to service and check your unit. When they do come, they spend a couple hours checking everything. I don't think the program is any particular deal but they don't cheat you on the service.

I plan on using Donley again in the future. I'm sure they aren't the cheapest but I feel I can trust them. If they do make a mistake, they make it right.

Pretty typical AC business. The technician arrived on time. Didn't say much .. serviced the AC machine outside and then charged me for the work. Seemed to be more expensive than what I'm used to paying, but this was the first place to answer their phone after I called 4 other places so I went with them.

I cannot say enough good things about our experience with Grand Canyon A/C and Martin.  They were called out by our warranty company yesterday am and came within a few hours.  They worked with Trane and Fidelity and had the repair done the same day.  Martin and his crew were professional, quick and got the job done!  I'm very impressed!

What a find!  Kevin's Parts came through for me when Amazon and other big box stores couldn't!  Personal service!  Got to see that the parts I needed were right!  They went out of their way to help me with parts that were out of stock elsewhere!  I love doing business with real people in real time!  I love working with people who know what they are doing!  Give them a call!  Like me, I'm sure you will walk away smiling!

Thanks to Chase, Antonio and Kim for getting the semi-annual check-up scheduled and taken care of promptly. As has been the case for over decades, Valley's Best has proven that's exactly what they are! Reliable and...THE BEST!!

Cheers!!

We had Jason come out to our condo 3 years ago to work on our rental AC.  Today he came  to our condo for AC tuneup..  Timely, efficient and super friendly.  Thanks Jason.

We got to know Sam before he started his own business.   We will follow him WHEREVER he is!  EXCEPTIONAL!

Bill came out and serviced our 3 year old heat pump. He was very through and explained what he was doing and educated us on a few things since we are from another state and had never owned a heat pump before. I will continue to call Bill for all of our heating and cooling needs. He is honest and truly cares about the quality of his work.

I have been using this family owned company for my home and business for years. I have had first class service from them. Jason who is the son has taken over for his father who is in remission from cancer. He also is a very kind and caring man who taught his son well. I have called Jason on crazy hours and yes even Saturday and Sunday and they always fit me in. I have sent him to my parents on a Sunday he came out and fixed the problem. He is  very reliable and very kind and caring. Jason I cant THANK YOU enough! If I had known about them being on Yelp I would Have shared this sooner!

Kings of AC were responsive, and came out the exact day that I needed them at our Airbnb. They fix the problem for a very reasonable rate and we are extremely grateful for their service. I will use them again for sure.

If you're thinking about going Solar + Energy Storage, these are your guys! They are nothing short of a reputable, professional, 1st class organization.

I have friends that have worked with them in CA and they are extremely happy post install. Their customer service is great all the way through.

I'm excited to to get my project going in AZ with them!

I have been a good customer for Wolff for 22 years but my latest dealings with them has changed my opinion. I called for a problem with one of my ac units and the tech said I needed new parts which were under warranty. He would order them and have the work done in a week.  I approved the work but had to leave town.  I returned 6 weeks later to find no work done and my house at 100o.  They were to install a new unit on the other side of my house but during the process said there was a gas line problem and I had to call another plumber to fix it.  Their people are the only ones that have ever been in my attic yet they took no responsibility for the bent flex line.  I found the techs professional and very courteous and friendly but it ends there.

i would leave 0 stars if i could. these jokers arrived at my house yesterday at 7am to install a brand new ac unit. ive waited months for this because the unit was on backorder. they worked from 7am to 8pm, taking up my whole day during which time i had no air conditioning. at 8pm, with the air running, they left. by 10pm the air was no longer working. im dissatisfied not only with the poor quality of the install but also the way it has not at all been rectified. i called the 24hour number both last night and this morning. both times i was told i woukd be receiving a call back from dispatch - one operator lied and said it would only take 10 minutes - but dispatch never called and i still don't have air. i will never recommend these totally uncool losers to anyone. save your money. i had air before they arrived and now i dont. con artists.

UPDATE: they sent someone over right away this morning to fix the problem and after another 2 hours of him working he told me he has to come back monday for ANOTHER 6 hour job. 20 hours i have to have these losers in my home. worst experience i've ever had with a business and i will be reporting them to the BBB

I had 2 other companies give me bids for a new unit before calling Red Mountain.  They each could not schedule an install for 7 to 10 days out.  Red Mountain sent Tony out to my house with an exact time for appointment and Tony was on time.  He obviously has a lot of commercial and residential experience.  Helped me figure out my AC requirements.  Worked with me on pricing and was able to schedule install 3 days out.  Install crew was exactly on time.  Got the unit installed efficiently and left my property cleaned up beautifully.  Tony came back to my house 5 days later to make sure the equipment was working properly I was happy and to review my warranty information.  I will definitely be recommending Red Mountain to my friends and family!!

They are horrible.  They came from Home Depot to quote AC replacement and they were $2000 higher than anyone else.  They won't take no for an answer.  They continue to call every few months despite my pleading with them to take me off the list.  I wouldn't let them back into my residence for ANYTHING.