Are you having trouble with your HVAC ventilation? Here are some things to look for to diagnose the problem. Leaks, clogged air filters, faulty limit switches, and broken evaporator coils are some of the most common problems that you may encounter. To fix the problem, contact a professional who specializes in heating, ventilation, and air conditioning.
In some cases, you may need to have the unit completely replaced, so keep reading to learn how to troubleshoot HVAC ventilation issues and go over the easy-to-understand instructions on twelve more steps to take. It’s very informative but keep in mind, it is not comprehensive.
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Common Problem #1: Leaks
Air conditioners can develop leaks in their ductwork. These leaks reduce the airflow through the system by sucking in air or blowing it back into the room. Airflow is also reduced due to unsealed heating, ventilation, and air conditioning parts and components. The air ducts and coil cabinets are among the most common culprits. Leaky HVAC components can reduce airflow by blocking the airflow and creating extra work for the HVAC equipment.
If you suspect that your ductwork has leaks, you should first make sure your HVAC system is running. Next, place your hand over a metal joint. If you feel air against it, then you may have a leak. A leak can also occur at duct joints. In addition, you can watch for any movement in the ductwork to determine if air is escaping from the system. When you notice any movement, leaks should be repaired.
Common Problem #2: Clogged Air Filters
A clogged air filter can have disastrous consequences for people with allergies or asthma. Even those with a strong constitution can experience negative effects from poor air quality. To help your family feel better, you should change the air filter regularly and invest in a whole-house humidifier.
Clogged air filters may also be a result of heavy pollution or airborne particles. To learn more about what the EPA (Environmental Protection Agency) says about the use of air conditioners and their effect on your health and the environment.
Common Problem #3: Faulty Limit Switch
If your furnace isn’t shutting off or the blower doesn’t turn off when it should, the problem is likely due to a faulty limit switch. The limit switch controls the amount of air that the furnace is allowed to circulate. If the switch is too dirty, it can cause the furnace’s heat exchanger to become too hot, which can result in the switch tripping.
There are several different causes for a faulty limit switch. Most limit switches wear out or fail due to overuse or lack of maintenance. A faulty limit switch can trip without any warning of heat buildup, locking your furnace down and causing a high-temperature emergency. A faulty limit switch may also cause a false alarm. In severe cases, a faulty limit switch could cause a system to shut down altogether.
Common Problem #4: Broken Evaporator Coils
If your AC unit is making strange noises, it could be an evaporator coil that is broken. Strange noises can come from both indoor and outdoor units. If you hear a strange noise from either unit, call a professional like Truficient HVAC Solutions for a diagnosis. The noise may also be related to a broken fan motor or loose parts. If the noise is persistent, call an HVAC technician for a diagnosis.
While the best option is to get a new evaporator coil, some contractors do not offer this service due to the cost and time commitment required during peak cooling seasons. The cost of buying a new evaporator coil is higher than for repairing a broken one, but it pays for itself in energy savings and peace of mind. You should also take a look at the warranty coverage of the replacement coil.
Common Problem #5: Uneven Air Flow from Vents
If you’ve been experiencing uneven airflow from your HVAC vents, you’re not alone. There are many causes for weak airflow, and identifying the culprit can be difficult. An HVAC expert can diagnose the problem and recommend a solution. Here are some common causes of uneven airflow. Check your air filter regularly and change it when necessary.
One common cause of uneven airflow is out-of-balance ductwork. A professional can check your ductwork and adjust internal dampers to ensure proper airflow in each room. Oftentimes, improper insulation can also cause uneven airflow. Insulation issues can be costly to repair, but a qualified HVAC technician can determine if it’s a simple matter to adjust the fan speed.
Common Problem #6: Improperly Calibrated Thermostat
If you notice that the temperature in one room is much warmer or cooler than in another, your thermostat may be out of calibration. This could also affect your electricity bill as almost 50% of all energy use is from heating and cooling buildings and could easily be higher if thermostats are improperly calibrated. You should also consider the location of your thermostat. Thermostats should be placed in optimal locations to ensure accuracy. Avoid placing them in drafts or direct sunlight. If they are located in an area where there is no direct sunlight, the reading will be inaccurate. Check all of the thermostat’s connections to ensure that there are no gaps or corrosion.