Experienced Heating Company in San Marcos

At Oak Island Heating and Air Conditioning, we’re a family-owned and -operated heating company in San Marcos, CA. Since 1998, we’ve been serving the residents of Escondido, North San Diego County, and Oak Island. Our NATE-certified technicians have more than 70 years of combined experience. Our company founders, Les and Cris Young, have been working in the industry since 1984. We treat our customers like family and strive to offer the best products, service, and customer experience.

Industry-leading products and materials are used for everything we do. Every job will be completed correctly and priced affordably. We’re a furnace service provider ready to work on all makes and models of heaters in San Marcos. You can count on us to be punctual to our appointments and to treat your home with respect. We never add any hidden fees to the final bill!

Our company is known for:
  • BBB accredited with an A+ rating
  • Being EPA certified
  • Offering ENERGY STAR products
  • Having high ratings on Angie’s List
  • Being an award-winning Lennox Premier Dealer