24/7 Emergency Repairs Available | Se habla español

Ready to Restore Your Comfort? Get in Touch Today.

Call or Text Now

630-229-2068

Fast response from a certified HVAC technician. No call centers.

Prefer Email?

Service@sierraheatingandair.com

Leave us a review !!

We’ll get back to you as soon as possible during business hours.

Business Hours

Monday–Friday: 8:00 AM – 7:00 PM
Saturday: 8:00 AM – 4:00 PM
Sunday: Closed

When you contact Sierra Heating & Air, you’ll speak directly with a certified technician — not a call center or salesperson. We’ll give you honest advice, clear pricing, and reliable service.

Oswego, Naperville, Aurora, North Aurora, Montgomery, Plainfield, Plano, Yorkville, Sugar Grove and surrounding areas.