Air Current Inc is very professional, thorough, and they explain everything very well. They were last here to do annual maintenance work on my two units, and they did an excellent job! Their technician was very friendly, prompt, and courteous. I've been using Air Current for at least five years now, and they always provide me with really good work. They don't try to upsell you and they're always straightforward about the work they do. I can't say enough good things about them! They're great and I would absolutely use their services again.