All City Air Systems: Licensed HVAC Repair Serving Covina, CA 91724

Covina, CA 91724

(626) 774-4096

Service Capabilities

  • HVAC system maintenance
  • HVAC installation or replacement
  • HVAC system repair

Q&A

What should I do if my AC in Covina isn't cooling and I suspect a refrigerant leak?

A refrigerant leak is a common issue in our area that reduces cooling efficiency and can damage your compressor. At All City Air Systems, we start with a precise electronic leak detection test to locate the source. We then repair the leak, following EPA guidelines, and recharge your system with the correct amount of refrigerant. We'll also perform a full system check to ensure optimal performance and help prevent future issues, keeping your Covina home comfortable.

How often should I schedule HVAC maintenance for my Covina home?

We recommend professional maintenance for your heating and cooling systems twice a year—typically in the spring for your AC and in the fall for your furnace. This regular tune-up is crucial in our climate to catch minor issues before they become major repairs, maintain energy efficiency, and extend the lifespan of your equipment. Our maintenance service includes cleaning, inspecting safety controls, checking refrigerant levels, and ensuring all components are working correctly.

What are the signs that my HVAC system in Covina might need to be replaced instead of repaired?

Consider replacement if your system is over 10-15 years old, requires frequent and costly repairs, or if your energy bills are consistently high. Other signs include uneven temperatures in your home, excessive noise, or if it uses R-22 refrigerant (Freon), which is no longer manufactured. We provide a straightforward assessment, comparing the cost of continued repairs against the efficiency and reliability of a new system, and offer clear options tailored to your home and budget.

Business Background

All City Air Systems, based in Covina, CA, is a trusted HVAC contractor founded on over two decades of hands-on industry experience. Owner Eddie Montano began his career as an installer helper, learning the trade from the ground up to become a skilled service technician. This journey instilled the core values of respect, honesty, and quality craftsmanship that define the company today. As a licensed, bonded, and insured contractor, we are committed to providing reliable service and repairs, professional installations, and thorough maintenance for all residential and commercial HVAC systems. We specialize in everything from complete new ductwork installations to ductless mini-splits, offering maintenance agreements with discounts for our preferred customers. Serving Covina, Glendora, West Covina, and communities across Los Angeles, Orange County, and the Inland Empire, we bring a local, dedicated approach to every heating and cooling challenge.

Business Location & Hours



Mon:8:00 AM - 9:00 PM
Tue:8:00 AM - 9:00 PM
Wed:8:00 AM - 9:00 PM
Thu:8:00 AM - 9:00 PM
Fri:8:00 AM - 9:00 PM
Sat:8:00 AM - 9:00 PM
Sun:8:00 AM - 9:00 PM


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