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To make sure your home or business’s AC operates at peak performance, you should keep your cooling system in top shape. When you need AC maintenance services in San Bernardino County or throughout the surrounding areas, All Pro Plumbing, Heating, Air & Electrical is just a call away. Our Ontario-based HVAC team can troubleshoot and diagnose specific issues you are experiencing or advise you on best practices to maintain your AC system. We also offer repair and installation services.

Some of the AC maintenance services we provide include:

  • Air balancing
  • Economizer installation
  • Filter installation and replacement
  • System performance testing

Air Balancing

Air balance is one aspect of your HVAC system that determines whether or not the unit is working at its peak efficiency. A building that has been balanced has equal airflow and conditioning in every room, ensuring that the temperature throughout is consistent. To balance a building, our technicians will test the ducts and airflow to create a baseline and then make small adjustments before retesting. This goes on until the airflow has been balanced.

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  • Special Offer


    AC Tune Up Special


    Cannot be combined with other offers.
    Valid from April 1, 2024 – June 30, 2024.

  • Special Offer

    $1000 OFF


    includes a 1 year service agreement,
    and an air filtration system (air scrubber)

    *Valid only March 14-31, 2024.
    Must present offer to technician at appointment.



Cannot be combined with other offers. Valid from April 1, 2024 – June 30, 2024.

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All Pro Smart Membership

Experience Peace of Mind, Discounts, & More Even the best HVAC, plumbing and electrical systems need recurring maintenance to keep them running perfectly. With the All Pro Smart Membership, you can rest assured that your home’s HVAC, plumbing and electrical systems won’t fail – especially when you need them the most!

  • Enjoy all member benefits for only $19.99/month!
  • Four Tune Ups Per Year. Value: $556.
  • No Breakdown Guarantee
  • 100% Money Back Guarantee
  • No Dispatch Fees. Value: $139
  • 15% Off Service Repairs
  • Priority Service. Value: $139
  • Credit Towards Investment. Value: Up to $500
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Since 1991

Top-Rated Plumbing, HVAC & Electrical Services

We remain steadfast in our commitment to providing outstanding customer service and tailoring our solutions to meet our customer’s unique circumstances. We take the time to understand your specific needs, as well as your budget, working closely with you to ensure that your problem is resolved efficiently and effectively the first time.

It’s because of our care for our customers that we have earned the 2020 Best of HomeAdvisor award and been awarded by as one of the best plumbers in the area.

Personalized Options

  • Community Service

  • Fast Response Time

  • Problem Solved the First Time

  • Personalized Option

  • FREE Estimates*

  • Our Core Values

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Thousands of Happy Customers

Was very happy with the quick response to my call for help. It was a very good experience even though it was a stressful situation. They worked with me and were empathetic to my problem and my limitations. They were very thorough in explaining the situation and what needed to be done, explaining and showing me the problem. Once it was decided what I had to do they were quick to get to work and completed the job in a very timely manner. All in all it was a stressful but good experience

– Susan C.

All Pro was awesome we called and they came the same day when our shower drain was leaking into our downstairs ceiling…..the service person was so nice and was very fast and very professional. The price was very reasonable and affordable. They did an outstanding job and we would recommend this company for all your servicing needs. This is the second time using this company, the first was for our water heater and they replaced it fast and very affordable the same day. They came at around 5 and was here until around 9 fixing not only our leaking shower drain but our water pressure value needed to be replaced. They did both and I do not think we would have gotten a better deal or a nicer person to come and do the repairs. All Pro is definitely the people we will be calling for all our plumbing, heating and air conditioning needs from now on.

– Pamela M.

They came to our rescue on January 8, 2018. we had a clogged toilet that overflowed all the way to the downstairs bathroom it was a horrific scene that day. That is when we decided to call All Pro Plumbing. Talked to a nice lady on the phone gave her our info and told us would call back to ensure us someone would come out to help. Within minutes gave us a response time and told us someone will be there within the hour. Sure enough that is when they showed up and quickly diagnosed the problem, went to work, and unclogged whatever was in there that needed to be unclogged. They were efficient, respectful, and professional. They also checkout out other things to make sure that toilet was working fine before they left. Great customer service!

– Vincent M.

Gary was absolutely amazing today. He was friendly, knowledgeable! It seemed a little pricey but our problem needed to be addressed immediately. Great customer service. I would definitely recommend!

– Danielle O.

I would recommend ALL PRO Plumbing to anyone that is looking for good professional service. They installed a sink and garbage disposal for me and did a great job. Their response time is quick. Always either the same day, or the next day

– Chris H.

Additional Resources


Economizers are devices that make your HVAC system more efficient. They help save energy costs by using air from outside to cool indoor air, gauging when the outside air temperature and humidity are cooler than the inside air.

Economizers can provide the following benefits:

  • Savings on your energy bill
  • Reduced carbon footprint
  • Improved indoor air quality

Our expert technicians will happily review your circumstances to determine if an economizer is right for your building.

AC Filters

If you are noticing increased allergy symptoms in your home or rising energy bills, it may be time to replace your AC air filter. An air filter is designed to trap dust, allergens, and other debris before it enters your air conditioning system. A new filter will not only improve the air quality in your building, but will prevent unexpected breakdowns within your system and improve the unit’s efficiency. Our All Pro Plumbing, Heating, Air & Electrical technicians can determine whether you need a new air filter, and will handle the installation, all at a great price with friendly service.

System Performance Testing

There are several performance tests that help our technicians improve the efficiency and comfort levels of your HVAC systems.

Some of these tests include:

  • Airflow Testing: This test ensures that airflow is moving efficiently throughout your home and there are no blockages or disruptions in the system.
  • Energy Efficiency Testing: Using special calculations, we are able to determine if your cooling system is working efficiently. The goal is to produce the highest amount of energy at the lowest cost for you.
  • Indoor Air Quality Testing: If the air quality in your building is not optimal, you will experience increased allergy symptoms and other adverse effects. We run tests to make sure that your indoor air quality is the best it can be.

Contact All Pro Plumbing, Heating, Air & Electrical at (909) 500-8193 when you need AC maintenance in Ontario and beyond!