7 Common HVAC System Mistakes You Should Avoid

- Wednesday, January 11, 2023

An HVAC (heating, ventilation and air conditioning) system is a significant part of managing a residence. Whether you are a homeowner or a manager of a multi-family apartment complex, the HVAC system is one of the most valuable investments. If not taken proper care of, the lifespan of the HVAC system can be shortened. HVAC systems also need ongoing maintenance to run at peak efficiency. Covenant Heating & Air Conditioning is the exclusive Pekin, Peoria, East Peoria and Lincoln area dealer for Goodman™ and Carrier® and are ready when you need professional help. Let's look at some of the most prevalent HVAC mistakes you should avoid:


1. Failure to clean or change the AC filters

Dust and dirt can accumulate inside AC filters, affecting airflow and making other components work harder and the AC unit to use more energy. Depending on the specific filter your AC has, you may need to simply clean it monthly, or you may need to replace it. Check with your system’s manual or consult with a professional service provider. If changing it yourself, set a recurring reminder in your phone’s calendar. Better yet, take advantage of a provider (like Covenant) who offers service maintenance packages.


2. Not installing the best replacement thermostat and in the correct location

When you need to replace a thermostat, it is important to know that today’s thermostats offer the latest technology. This makes it important to consult a professional service provider who can recommend which new thermostat to purchase and what location is best for the installation. For example, the thermostat should be placed in a central area on an interior wall and be unobstructed by doors/furniture. It also should not be in the path of an air vent. There are other considerations to keep in mind that an expert service provider is aware of.


3. Selecting and installing the wrong size HVAC system

The HVAC system’s correct size is typically based on home or apartment square footage. But without the help of a professional service provider, you can end up with an HVAC system too small or too large, causing the HVAC system to work harder than necessary. The system may also end up using a lot of energy to function. That's why when you install a wrong-size HVAC system, it leads to wasting more money throughout the year.


4. Neglecting service maintenance

For an HVAC system to last and work as efficiently as possible, routine maintenance is a priority. It can help ensure any minor issues are addressed before they become costly. Regular maintenance (at least every few months) can also help ensure energy usage is significantly reduced and maximize lifespan of parts. When you wait too long to repair leaking ductwork, it causes an imbalance of hot and cold air distribution. Any gaps, leaks, or holes need the care of professionals.


5. Self-repairs and self-maintenance of your HVAC system

Trying to perform repairs yourself often leads to even heavier damage. It happens because you lack the proper tools and equipment as well as the knowledge and training. A professional service provider like Covenant Heating & Air Conditioning can quickly and properly resolve the problem.


6. Leaving doors or windows open while the AC is running

Not opening doors or windows while the AC is running seems obvious, but some people are guilty of doing so. Each time windows or doors are left open, you lose money while your HVAC system has to recondition the air, consuming more energy and increasing costs.


7. Closing supply vents

A common misconception by some people is that energy bills can be reduced by closing some air supply vents. This simply is not true and instead blocked or closed vents can put excess pressure on the ducts, also leading to accumulation of dusty and hot air. An unbalanced HVAC system can cause fluctuations in temperature that result in increased energy bills as well as a shorter HVAC system lifespan.



An HVAC system is an integral part of today’s residences – from single-family homes to apartment complexes. That's why considering a service maintenance package from a provider with expertise in the field can be well worth it. HVAC system check-ups ensure your heating and cooling comfort. Look for a provider (like Covenant Heating & Air Conditioning) who offers service maintenance packages. Covenant services over 5,000 property owners, providing you peace of mind that you can count on service with integrity and commitment.