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One Hour Heating & Air Conditioning® Serving Fullerton

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4.82

(174740 reviews)

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Your Local HVAC Experts in Fullerton, CA

When the summer heat in Fullerton hits triple digits, or winter nights dip into the 40s, your home comfort depends on a reliable HVAC system. At One Hour Heating & Air Conditioning of Fullerton, we deliver fast, honest, and high-quality AC and heating services that keep your home comfortable—without breaking your budget.

Why Fullerton Homeowners Call Us First

Fullerton isn’t just where we work—it’s where we live. From Raymond Hills to Sunny Hills, Downtown Fullerton, and neighborhoods around Cal State Fullerton, we understand the unique challenges local homeowners face:

  • Older homes that need upgraded, energy-efficient HVAC systems
  • Tight crawl spaces and ductwork in mid-century houses
  • High summer humidity and late-season heat waves

We’re not a call center 200 miles away—we’re your neighbors, and we show up fast.

Our Fullerton HVAC Services

  • AC Repair & Installation – Beat the heat with quick repairs or modern, energy-saving systems.
  • Heating & Furnace Service – Reliable repairs and efficient replacements to keep you cozy.
  • Seasonal Tune-Ups – Prevent breakdowns and extend the life of your system.
  • Ductless Mini-Splits – Perfect for garages, ADUs, and historic Fullerton homes.
  • Indoor Air Quality – Filters, UV scrubbers, and purification systems for healthier living.
  • 24/7 Emergency Service – No overtime fees, no waiting around.

The One Hour Difference

  • Always On Time. We show up when we say we will—guaranteed.
  • Upfront Pricing. No gimmicks, no surprises—just honest quotes.
  • Local & Licensed. Fullerton-based techs who care about our community.
  • Veteran-Owned. We bring discipline, integrity, and reliability to every job.
  • Satisfaction Guaranteed. If you’re not 100% happy, you don’t pay a dime.

Neighborhoods We Serve in Fullerton

We proudly serve Raymond Hills, Golden Hill, Sunny Hills, Downtown, Amerige Heights, and beyond. Whether you own a historic bungalow near Chapman Park or a modern condo, we have the experience to handle your HVAC needs.

Call Us Before the Heat Wave Hits

Don’t wait for your AC to quit on the hottest day of the year. Call us at (714) 406-5760 or book your free estimate online today. Let us show you why more homeowners in Fullerton trust One Hour Heating & Air Conditioning to keep their homes comfortable year-round.

Learn more about our Fullerton-based HVAC experts.

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4.82

(174740 reviews)

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