I have worked with Oasis twice before and both times they have been PHENOMENAL. They're quick, helpful, and actually care about what's best for you, not just what makes them the most money.
The first time, my AC went out last summer right before this big heat wave. Every other tech I had out told me I would have to replace the whole thing, and they couldn't do anything for me until after the slate of 95+ degree days we had coming up. Some told me that it would cost thousands to fix my current problem. Oasis came out and 10 minutes later, my tech Damir tells me he's fixed my AC by replacing a part -- he carries a spare in his bag. So he's patched it for the summer -- a $300 solution when I was prepared to spend $8,000+. He also walked me through what was wrong with the system, what would need to be replaced eventually, and how to keep the AC going through the rest of the summer. I felt his price was very reasonable (he even took a little bit off because he misspoke when he told me the original price) and he was able to truly help me, not try to get more money out of me.
So this spring, I called them to finally get the AC replaced. First, they came out to do the estimate and explained all the options to getting the AC up the 5th floor. They are very focused on making sure you have a good experience (when I suggested not craning it up all the way, they responded basically "no, that's silly, that would just cost you more money than you need to spend. We're not doing that").
They came out today and in the course of doing the work, found a previously undiscovered leak in the HVAC closet. They immediately called their plumbing team (Amer and Steve) who cancelled other calls to come and help. Amer and Steve thoroughly diagnosed the leak and fixed it fast. They spent almost an hour talking me through the issue and different next steps to get the mold dealt with. The AC work has been great so far -- the team had to move my appointment to Saturday to save me about $9,000 in fees to the city and have been very communicative about the change.
TL;DR: If you need a plumbing and heating company, Oasis should be your first call.
Response from the owner:Thank you, Layne, for sharing your excellent experience with us! We're glad Damir could provide a quick and affordable solution for your AC, and we appreciate your kind words about our team's efforts to accommodate you on short notice. Your satisfaction is our priority! We are here for all of your HVAC and Plumbing Needs!