I called Diversified Air Solutions after researching services, reviews and special deals in Angie's list. I had 2 other services providers selected if for some reason I did not like Diversified and/or felt their price was above what I had seen in Angie's. I called them in the morning and Alex told me that he would be able to be at my place between 2 and 3pm but that he would call to confirm the exact time. His prices were very competitive with under $30 to diagnose the problem and $59 for a system inspection and tun-up. He also said that after the diagnostic, if he ended up fixing something or doing the tun-up, he would not charge the $30. He was very forward about his work ethics and that he would not try to up-sell something we did not need. By 1pm he called and said he would be arriving at 2pm. At exactly 2pm he knocked on my door! I was not surprised, since every review said that the was extremely punctual, but I was certainly very pleased that he was consistent! He went about checking the A/C system and found that all the freeon had leaked. He said that he would had just recommend to add freeon if there was still some left in the system, but since there wasn't any felt, he gave us the options: we could opt to find the leak and refill with freeon (the right type of freeon is quite expensive nowadays) or replace the unit. We asked more information about benefits of changing the unit and he explained every thing and provided the warranty information. 10 year warranty on the system major components, 5 years on the small components, and one year labor - which is the same that all other folks in Angie's. He proposed a 2-ton Tempstar unit. We never heard of the brand nor of the parent company Carrier, but he assured he had been installing Tempstar for a few years and that his experience with them has been very good and with no issues. We decided we needed to do research before agreeing to it. We checked the company and saw that Carrier has been bought by United Technologies and that United Tech was a big and stable company that will stay around for years to come (we were afraid to buy something and 4 years down the road the company goes out of business). Then we checked for A/C brand reliability and found in the consumer's report site that customers who have installed A/C between 2008 and 2015 had ranked Carrier as the 5th most reliable bran. In the 5 year failure rate ranked, the most reliable was American Standards with 20% failure, Lenox and Trane at 21%, Bryant at 23%, Carrier at 24%, Rheem at 27%, York at 28%, Goodman at 29% and Amana at 30%. While looking on like, the reviews for Goodman seemed pretty good, so we were surprised when we saw that for the 7 year period that CR did the research (2008-2015), it was one of the least reliable brands. I must say that while we were trying to find information on what Alex would be installing, I must have texted Alex at least 10 times, and he would reply with the answers and called me before his next job to ensure I got all that I needed. The awesome thing was, everything he told us checked correct with the research we did online! We made our decision the day after of the diagnostic, and Alex was able to get a unity and install the next day. They came at 9am on the dot, and completed the work by 3pm - they waited after done for the temperature to change to make sure everything was fine and did an awesome job cleaning up after themselves. He registered our unit and sent the warranty paper by the next morning. He started working in electrical jobs since 16. Besides licensed A/C services he is also a licensed electrician, and I am definitely keeping his info for future electrical work. Overall A+ honesty, professionalism, quality, punctuality, friendliness, patience to answer questions - I would definitely hire Alex again!