Understanding HVAC Guidelines
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Understanding HVAC Guidelines

Once I purchased my first home, I realized that I needed to do my part in caring for my home appliances. In addition to reading the user manuals for my kitchen appliances and state-of-the-art plumbing system, I realized that I also needed to do a little research about HVAC. Because I had no experience with HVAC systems, I called out a professional to teach me a thing or two. It was fascinating to talk with him, and I was able to take notes about all kinds of important topics, such as maintenance, troubleshooting, and even shopping for a new system. This blog is all about understanding HVAC guidelines.

Understanding HVAC Guidelines

Why Is Your Rooftop AC Putting Out Hot Air?

Marilou Girard

If your building becomes too hot during the day, you may crank up your rooftop AC to cool down everything and everyone in it. But if your AC puts out hot air instead of cold air, call a commercial HVAC contractor today. Your AC may have a number of things wrong with it. Learn why your rooftop AC puts out hot air and how to fix it below.

What Could Be Wrong With Your AC?

Commercial HVAC systems take a beating all year round. Not only do commercial air conditioning systems must cool down large spaces, but the systems must also sit outside the building. Exposure to heat, rain, and even cold temperatures can take a toll on your commercial cooling system. 

Rooftop air conditioning systems come in packages. The system's air handler and condenser come packaged as a single unit. When something happens to one area of the unit, a problem can occur in the other unit as well.

For example, the air handler must remove all of the heat from your building and relay, or transfer, it to the condenser. If the air handler freezes or leaks, the condenser can overheat. The air trapped inside the condenser can backtrack into the air handler. Rather than blow cool air into your building, the air handler blows hot air into it instead. The heated air can make everyone in your building feel hot and uncomfortable. 

The best way to repair your ailing rooftop unit is to allow a commercial HVAC contractor to do it for you. 

How Do You Fix a Hot AC?

A commercial HVAC contractor will need to troubleshoot your rooftop AC before they can properly diagnose it. The diagnostic test allows a contractor to rule out or eliminate things that could cause issues for your cooling system, such as low refrigerant or clogged drainage lines. Low refrigerant and clogged drainage lines are common reasons why cooling systems blow out hot air.

If a contractor doesn't find anything wrong with the system's refrigerant or drainage lines, they'll check the air handler. The air handler contains the system's evaporator coil. The coil should remove all of the heat from your building during the day and night. Excessive heat, dust, and even insects can cause the coil to ice up. The ice can prevent heat from moving through the coil and into the condenser. If a coil did freeze over with ice, a technician can thaw it out for you. 

A contractor will also check the condenser and other parts inside your rooftop cooling system. As with the evaporator coil, a contractor will repair anything they find wrong with the part. 

If you need assistance taking care of your ailing rooftop AC, contact a commercial HVAC company, such as Big Rock Service Company LLC