How quickly can I get my AC fixed?

We aim for same-day or next-day service whenever possible. Give us a call to check our current availability.

Do you service older HVAC systems?

Yes. We work on a wide range of systems, including older units and newer energy-efficient models.

Is it better to repair my old AC or replace it?

It depends on the age of your AC and how much the repair will cost. If your system is less than 10 years old, repairs are often worth it to keep it going. But if it’s 15 to 20 years old—around the end of its typical lifespan—and needs a major fix, replacing it is usually the smarter long-term move.

What size air conditioner do I need for my home?

The cooling capacity you need depends on your home’s square footage, insulation, ceiling height, sun exposure, and more. There’s no one-size-fits-all answer; we can have a HVAC professional perform a load calculation to determine the proper size.

Is HVAC maintenance really necessary in Fullerton’s mild climate?

Yes. Even with moderate weather, regular maintenance can help extend the life of your system and prevent costly breakdowns.

5.0

Based on 225 reviews

Heating & Air Conditioner Repair in Fullerton, California

Heating or Cooling Issues? We’ve Got It Handled

"*" indicates required fields

Energy-Efficient Solution Experts

Licensed and Certified Technicians

Family-Run, Veteran Owned and Operated

COOLING

Reliable Heating & Cooling for Fullerton Homes

Fullerton sees its fair share of temperature swings. With sunny, high-80s summers and cool evenings that creep into the 40s during winter, reliable heating and air conditioning isn’t optional. Whether you’re near Downtown Fullerton or close to Cal State, when your system goes down, you need fast help from people who know the area.

Proudly Serving Los Angeles & Orange Counties

From Beverly Hills, Silver Lake and Pasadena to Santa Monica, Torrance, and Huntington Beach

View All Service Areas

How Our Air Conditioner Repair Process Works

1 Easy Scheduling

Call or book online and we’ll get you on the calendar.

2 Detailed System Check

We inspect your furnace or air conditioning system and explain the issue clearly.

3 Straightforward Fix Options

You’ll get clear recommendations, honest pricing, and no pressure.

4 Clean, Precise Repairs

We show up prepared, fix it right, and leave your space as clean as we found it.

Why Fullerton Homeowners Choose RHC

Homeowners in Fullerton trust Reliable Home Comfort because we’re professional, easy to work with, and always focused on getting the job done right. Whether it’s an urgent AC repair or seasonal heating maintenance, you can count on us.

Join the Comfort Club

Take the stress out of home maintenance. With our Comfort Club, you’ll get priority service, exclusive discounts, and routine checkups—so your systems run smoothly all year long.

Explore Membership

10%

Veteran | 1st Responders Discounts available.
Call dealer for details

Frequently Asked Questions

How quickly can I get my AC fixed?
We aim for same-day or next-day service whenever possible. Give us a call to check our current availability.
Do you service older HVAC systems?
Yes. We work on a wide range of systems, including older units and newer energy-efficient models.
Is it better to repair my old AC or replace it?
It depends on the age of your AC and how much the repair will cost. If your system is less than 10 years old, repairs are often worth it to keep it going. But if it’s 15 to 20 years old—around the end of its typical lifespan—and needs a major fix, replacing it is usually the smarter long-term move.
What size air conditioner do I need for my home?
The cooling capacity you need depends on your home’s square footage, insulation, ceiling height, sun exposure, and more. There’s no one-size-fits-all answer; we can have a HVAC professional perform a load calculation to determine the proper size.
Is HVAC maintenance really necessary in Fullerton’s mild climate?
Yes. Even with moderate weather, regular maintenance can help extend the life of your system and prevent costly breakdowns.

Quick Links

Heating & Air Conditioner Repair in Fullerton, California