About Allison Air Conditioning

Your Trusted HVAC Partner in the Inland Empire for Over 40+ Years

Dedicated to Comfort, Quality, and Exceptional HVAC Service

For more than three decades, Allison Air Conditioning has been the Inland Empire’s go-to HVAC company for reliable heating, cooling, and indoor air quality solutions. Our team is made up of certified, highly trained professionals who believe every homeowner deserves honest service, lasting comfort, and a system that performs efficiently year-round. Whether you need air conditioning services, heating repair or installation, or indoor air quality improvements, we’re here to deliver results you can trust.

At Allison Air Conditioning, we treat your home like our own. From the moment you call us to long after your service is complete, you’ll experience dedicated support, expert craftsmanship, and a team that genuinely cares about your comfort.

Why Homeowners Choose Allison Air Conditioning

Choosing the right HVAC contractor can make all the difference in your home’s comfort, safety, and efficiency. Our blend of decades-long expertise, premium products, and customer-first service sets us apart from the rest. We go above and beyond to deliver HVAC solutions that last.

Certified Technicians

Our HVAC Technicians are licensed, insured and NATE Certified, so you can rest assured that you have the most knowledgeable HVAC contractors that are friendly and professional.

Financing Options

Need a new air conditioning system, heating system, or need to replace your ancient outdated HVAC system? We offer financing “with approved credit” for the purchase and installation of new HVAC Systems.

Additionally, our HVAC systems are highly energy-efficient and may qualify you for additional rebates through federal and local energy rebate programs.

Reduce Your Energy Costs

We can help you to reduce your monthly heating and cooling energy costs with our line of energy-efficient HVAC Products and Solutions. Call us today and we will discuss your options and get you more for your energy-dollar.

Your HVAC Questions, Answered

We know homeowners often have questions about HVAC systems, maintenance, and what to expect from service visits. Our team is here to provide clear, helpful answers so you can make confident decisions about your home’s comfort. Below are some of the most common questions we receive.

How long does a typical HVAC inspection take?

A standard HVAC inspection usually takes between 45 minutes to an hour, depending on the condition of your system. Our technicians evaluate performance, check components, and verify that everything is running safely. We always provide a detailed report so you understand your system’s condition.

What factors determine the right HVAC system size for my home?

A proper HVAC system size depends on home layout, insulation quality, square footage, and climate. Installing the correct size ensures optimal efficiency and comfort. During your consultation, we’ll perform a complete evaluation to recommend the perfect fit.

Can improving indoor air quality really impact my energy efficiency?

Yes—clean air systems reduce strain on HVAC equipment by decreasing dust and airborne particles. This allows your heating and cooling system to operate more efficiently. A well-maintained IAQ setup often leads to lower energy bills and improved overall comfort.

How often should I replace my home's air filters?

On average, air filters should be replaced every 1–3 months depending on usage, pets, and indoor air conditions. Regular replacement protects your system and improves airflow. We can recommend the right filter type based on your home’s needs.

What should I expect during a new HVAC installation?

Our installation process typically includes removing old equipment, installing your new system, testing for safety and performance, and walking you through operation and maintenance. The full process usually takes one day. Our team ensures a clean and seamless installation from start to finish.

Testimonials

What Our HVAC Customers Say About Working With Us

We’re honored to serve thousands of homeowners across the Inland Empire. Every installation, repair, and tune-up is performed with care and expertise—and our customers feel the difference. Here are some real experiences shared by the people we proudly serve.

“Victor did an outstanding job servicing my AC. He was incredibly knowledgeable, professional, and personable throughout the entire visit. The inspection was thorough, and I truly appreciated that he took the time to explain everything in a clear and honest way. At no point did I feel like he was trying to upsell me on anything unnecessary—just straightforward, quality service. Highly recommend!”

Chris M.

“Used Allison a few years back when we had a leak. They did a great job! Had them come out for basic maintenance today Tech Victor was extremely polite and professional did a great job. AC is even colder than before. The price is very reasonable. I definitely recommend Allison!”

Michael F.

“I have been using this company for years. Steve, the owner is excellent and he employs the best people to do the job. I have had many services done by them. They installed my new air ducts and new heating and air system, as well as my air purifier. Their Techs are knowledgeable, very polite and do a great job. If you call them you will probably be speaking to Katie. She is great to work with ; she does all the scheduling and helps you with any of your service needs. This company goes above and beyond to help you with getting your heating and air up and running. They are THE BEST!”

EA S.

Ready to Upgrade Your Home Comfort?

Whether you need a repair, new installation, or a full indoor air quality upgrade, our experienced HVAC team is here to help. We offer fast, friendly service backed by decades of experience and thousands of successful projects. Let us bring reliable comfort back to your home.