In Arizona, where summer temperatures often soar above 100 degrees Fahrenheit, a reliable air conditioner is a necessity. Unfortunately, weak airflow from your vents, persistent hot spots, or uneven temperatures could hinder your system’s ability to keep you cool. Instead of your cooling equipment, the problem may lie in your ductwork. Airflow imbalances, installation gaps, duct leaks, and poor system design can all play a role in overloading your AC system.
Why Are Ducting Problems Prominent in Arizona?
Ductwork problems are fairly common for Arizona homes for many different reasons. Arizona faces unique stressors that other parts of the country simply don’t. Extreme summertime heat with large attic temperature swings can take a toll on your ducting. Desert dust accumulation can build up inside the ducts and prematurely wear them out.
Many older homes throughout Arizona feature outdated building materials. Originally, ductwork didn’t receive a lot of insulation. Without adequate insulation, you can lose some of your treated air before it reaches the main living spaces of your home. Currently, the U.S. Department of Energy (DOE) estimates that homes lose about 20% to 30% of their conditioned air through problems with their ducting.
Key Indicators of Ducting and Airflow Problems
Far too often, homeowners blame their air conditioning system, thinking that it’s failing, when the problem lies within their ductwork. Knowing the warning signs of a ducting or airflow problem can allow you to look in the right place to identify the root cause. One of the most obvious signs of a problem is one or more of your rooms being hotter than the rest of your home.
You can experience weak airflow coming from certain vents but not others. You may have higher energy bills despite normal AC usage. You may notice excessive dust buildup on the surfaces throughout your home or a whistling or rattling noise coming from your attic space. Your first sign of a ducting problem may be noticing that your air conditioner seems to be running constantly during the warmer parts of the day.
Why Do These Problems Get Worse in the Summer?
If you have slight issues with your airflow or ductwork, you’ll start to notice they’ll get significantly worse as the temperature outside gets hotter. In particular, June, July, and August can turn small duct leaks into major comfort problems. There are several reasons for this.
The first and most obvious is that you have a higher demand on your cooling system. It’s trying to make up for the increasing difference between a higher outdoor temperature and your desired temperature indoors. Extreme attic temperatures can also play a big role in lessening the effectiveness of your HVAC system. Other issues include system strain due to longer runtimes and increased static pressure due to a disruption in balanced airflow.
It’s important to be mindful of the early warning signs of a ducting malfunction with your system. It’s best to address these problems early in the spring. This will ensure that your system is operating efficiently to keep your family comfortable when the worst summertime heat hits.
Root Causes of Ducting Leaks
There are several different reasons that your ductwork may develop leaks over time. The most obvious is due to loose or disconnected joints, which can develop due to the vibration of your HVAC system. Any time that you’re in an attic space or other location with exposed ducting, you may accidentally disturb the runs. All it takes is a small hole to allow a large volume of cold air to escape.
While flexible ducting is pretty common in a lot of Arizona homes, it’s vulnerable to a few problems. These include rodent damage, improper installation, UV exposure, and compression from storage items. Any time your ductwork is restricted or torn, it can affect your HVAC performance.
Another underlying cause of ductwork issues is poor installation and sealing. The plenum is the main distribution box that connects to your indoor air handler unit. This is a common point for leakage. Also, the supply boots where your ducts connect to ceiling registers can develop gaps. It’s always best to have a professional HVAC technician install your ductwork to ensure a good job.
Another contributor to ducting malfunctions is a breakdown of your ducting insulation. If you have deteriorated or missing insulation around your duct runs, it can allow more heat transfer. This means that the hotter temperature surrounding the run can actually penetrate it and increase the interior temperature of your air. If your ductwork runs through a hot attic space during the summer, it can have a significant impact on the temperature inside it.
How Duct Leaks Can Lead to Hot Rooms
It’s important to realize that the ductwork throughout your home is strategically designed to provide balanced airflow. Whenever duct leaks develop, they can lead to a slew of different issues. The conditioned air can escape into your attic, walls, or even floor crevices. Your system’s pressure can drop, reducing its operating efficiency.
Some rooms will receive less airflow due to this drop in pressure. This can leave them feeling hotter than other rooms in your home. It’s common for your thermostat to register the interior temperature near the beginning of your ducting. Rooms that are more distant from your air conditioner can still remain hot without your thermostat realizing it.
How to Fix Airflow Issues
Now that you understand where you may be having problems with your ductwork, it’s important to take action before the summer heat settles in. One of the best things you can do is safely inspect all areas of exposed ductwork. These include spaces like your attic, basement, or crawl space.
Look for disconnected joints, loose foil, tears, or crushed flexible ducting. You can easily reseal these areas with metal foil tape for ducting. Don’t use standard duct tape, as it’s not rated to handle large temperature swings.
It’s also important to check the insulation at these exposed areas. All your ducting runs should be securely wrapped in insulation rated R-8 or above. If you’re missing any insulation or your insulation is brittle and falling apart, it’s best to replace it.
Another must-do is scheduling professional AC maintenance service. Only a professional is capable of testing your ducting for any airflow problems and pressure imbalances. When you have one of our professional technicians service your air conditioning system, you can rest assured that it will be functioning as optimally as possible when we’re done.
Expert Ducting Repair Service
El Indio AC provides expert ducting repair service for Tolleson, AZ and the surrounding communities. We can also assist with all your ducting replacement, installation, and inspection needs.
Phone our office today to book your next service appointment with one of our helpful HVAC technicians.
