Best Emergency Hvac in Plano TX

I find this Devard's heat air electric & plumbing company on next door, going by the reviews I contact them and tell them about a house I purchased and its AC system needs the annual preventative maintenance plus flushing its drainage pipe/s making sure its not clogged as the house inspector noted.
I call them and explain all this to the lady who answered, she asks me to send them the inspector notes for them to see so they know what they need and what to do when on site, and I send them these inspector notes from the report itself, by now 3 days already passed, I do not hear from them, I call again and the lady answers telling me she needs to speak to the “manager” (so looks like the lady cannot do any scheduling unless go through the manager, a bit weird but whatever) a day or two passes by, I call and lady goes: the manager said he needs to the full house inspector report, and I go I have sent you all the notes related to the HVAC, why the manager wants to see the full report which got nothing to do with the HVAC, what the manager got to do with seeing the full report.
2 or 3 days go by till the lady calls and leaves a message about me being blessed since the manager agreed for the lady to go ahead and put me on their service schedule, when I decided I am not using this company.
They wasted around 10 days of my time and my need, I think greedy companies nowadays they only want to show up at your doorstep to change the AC unit for 15K and do not want to service them for $100, companies and people not looking further than their nose tip and not thinking about their kids future which going to pay for this greediness.

My daughter broke her shower handle on Super Bowl Sunday. We had to shut the water off to the whole house. I called a different plumber to come out the next morning. They never showed up. LUCKILY, after the no-show we called Gem Plumbing. Stan answered and I went into my story. He let me know that he wouldn’t be able to come out that day but started asking me questions about the situation. Stan ended up speaking with my husband and walked him through fixing it! Gem Plumbing is now saved in my phone and will always be my go to. Amazing customer service and just a great person!

Aaron was extremely professional and checked every inch of our home to find a very unique problem obstructing our A/C. I am very appreciative of the manager Tim for sending Aaron out to diagnose an issue that was not resolved the first visit. Outstanding company that I have now used for A/C and plumbing. They will get all my business in the future.

This plumber took what could have been a major problem and made it a repairable issue. I could not be more pleased!

Their membership program for HVAC maintenance is good.