Who are the best HVAC companies in Clifton Park, NY?

Hey everyone, I'm looking for recommendations for a reliable HVAC company in the Clifton Park area. My AC has been acting up, and I might also need someone to look at my furnace before winter. I definitely would prefer a company that's honest, shows up when they say they will, and doesn't try to upsell everything.

If you've had any good or even bad experiences with a local HVAC company, I'd love to hear about it. Thanks!