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All Pro Plumbing, Heating, Air & Electrical is your go-to HVAC expert. Specializing in extensive cooling devices and components, we are able to recommend the best HVAC equipment to meet your unique needs. In many cases, residential and commercial properties alike benefit from the use of a makeup air unit. These systems help improve efficiency and work effectively in instances where a traditional air handler is not appropriate.
Enjoy savings and efficiency with a makeup air unit from All Pro Plumbing, Heating, Air & Electrical. Our makeup air units in San Bernardino County are perfect for your cooling needs. Call (909) 253-0664 to schedule an appointment for more information today.
$49
ElectricalSafety
Evaluation

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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
We Proudly Offer The Following AC Services To
Homes & Businesses In Ontario:
- Air Handler & Evaporator Coil Services
- Makeup Air Units (MUA)
- Duct Cleaning & Repair
- AC Maintenance
- AC Repairs
- AC Installation & Replacement
- Ductless Mini Split AC Systems
- Emergency AC Services
Over
3 0YEARS OF
EXPERIENCE
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 Expertise.com as one of the best plumbers in the area.




Thousands of Happy Customers
Additional Resources
What Is a Makeup Air Unit?
A makeup air unit (MUA) is a type of air handler that uses 100% outdoor air rather than recirculating air. They are gaining popularity with building managers because they are known for maintaining a high indoor air quality for the building’s interior. As indoor air quality becomes a top priority for building owners, HVAC systems that are designed to improve air quality are going to become more popular.
When Would You Use a Makeup Air Unit?
Although makeup air units are good for maintaining high indoor air quality, they should not be used in every instance. For example, the energy used in an MUA compared to a traditional air handler is a little more, making these units marginally more expensive to operate. However, there are numerous instances where an MUA is best suited.
Some of the most significant uses for them include:
- If you use a water-source heat pump in your home, an MUA is best to circulate the air
- In industries where fresh, clean air is always required such as surgical operating rooms, restaurant kitchens, and manufacturing booths
- When the HVAC system does not have the proper means to introduce fresh air
- Apartment buildings or buildings zoned for multiple uses would also benefit from an MUA
Learn more about this type of cooling system and if a makeup AC unit in Ontario might benefit you—contact All Pro Plumbing, Heating, Air & Electrical today!
Call (909) 253-0664 today to speak with one of our Ontario HVAC specialists.