I have used Standard Heating and AC for years, but this is my first review on them. I called them recently to fix the AC at a rental unit I own. As always, they delivered. The repair person was prompt (called me in advance that he was on the way), quicky found the problem and repaired the issue. I don't know if they are the lowest cost provider as I use them for all my heating and AC needs, but they always fix the problem the first time and are great to work with. All of their repair people are very professional. Ihighly recommend them and they will definately continue to get mu business!