HVAC installation, repair, and maintenance in Rapid City and the Black Hills. Licensed, insured, and available 24/7 for emergencies.
From new installations to emergency repairs — we've got you covered.
New air conditioning systems installed professionally. Free estimates on all new installations. Serving all major brands.
Fast, reliable repairs on all makes and models. Same-day service available. $75 service call + parts.
Annual tune-ups to keep your system running efficiently. Prevents breakdowns and extends equipment life.
Restore your AC's cooling power. We check for leaks and recharge to factory specifications.
Furnace and heat pump repairs. Keep your family warm all winter with our heating services.
AC or heating emergency? We're available around the clock. Emergency service, day or night.
Alien Air Conditioning has been keeping Rapid City comfortable for over a decade. We're a locally-owned, family-run HVAC company committed to honest service and quality workmanship.
Our technicians are licensed, bonded, and continuously trained on the latest equipment and refrigerants. We show up on time, clean up after ourselves, and stand behind every job.
Proud members of the Rapid City Chamber of Commerce and certified through NAOAA.
We're here when you need us.
AC or heating emergency at 2am on a Sunday? We have someone on call 24/7 for genuine emergencies. Call our emergency line.
Emergency: (605) 123-4567
Request a quote or book a service visit.
Use our chat widget to schedule a service visit — it's the easiest way to reach us, even at 2am.