End of Summer HVAC Issues

This article will discuss the most common HVAC issues during the summer so that homeowners can remain vigilant and keep their units in perfect condition. 

Although HVAC systems are highly durable, the summer heat can put a lot of pressure on the home's AC unit. While homeowners can sometimes perform DIY tasks to keep the system running, it's not always enough to solve the issues.

This article will discuss the most common HVAC issues during the summer so that homeowners can remain vigilant and keep their units in perfect condition. 

Malfunctioning capacitor

A common reason modern HVAC systems struggle to work correctly is a malfunctioning capacitor. Run capacitors are devices that help activate the motor to complete its run cycle successfully. However, the motor or compressor can't start when the capacitor fails, and the AC's safety mechanism deactivates them. High summer temperatures can damage the capacitor without warning, but an expert can examine the system and prevent sudden breakdowns.

Not enough refrigerant

When the cooling season starts, many homeowners are surprised that their unit is running low on refrigerant. AC units are sealed systems, so homeowners shouldn't have to open them to pour more refrigerant.

Still, there are certain instances where a small leak signals it's time to recharge the AC. When unaddressed, the leaks become more severe, and the system requires multiple repairs during the year. As a result, the AC may lose its heating and cooling power and become less energy-efficient, increasing the household's power bills.

The good news is that an expert has the tools to assess the situation and recommend the best repair options. In some cases, replacing the unit may be the optimal solution.

Dirty air filters and coils

The more the HVAC system is engaged, the dirtier the air filters get. When the summer heat rolls in, replacing the filters more frequently is normal. Most models have a service life of three months, but this depends on how often the AC is engaged.

Pet hair, dust, dirt, and allergens travel through the air and accumulate within the unit, latching onto the filters. These pollutants lower the AC's efficiency, leading to unexpected utility bill spikes. Failing to take immediate action can even result in the system overheating and breaking down.

Fortunately, cleaning the outside coils and replacing the filters can prevent the AC from malfunctioning. But cleaning the coils isn't always straightforward since it may involve removing the panels. Routine maintenance checks every few months are a foolproof way of ensuring both the filters are clean and prolonging the system's service life.

Blocked drains

When the AC cools the home, it removes moisture from the air. Although most systems eliminate dust and dirt from the air, some particles can get past it and travel through the drain hose. The dirt and sludge can clog the drain and cause long-term damage if the unit is constantly running. Homeowners who suspect their drain is clogged should immediately contact a technician.

Keep the HVAC system running with professional help

Those who want to optimize their HVAC system and help it withstand the summer heat should contact an experienced professional.


CMB Air is a residential heating and cooling installation, service, and repair company with 15+ years of experience serving Tampa and surrounding areas. If you need a new air conditioner, repair, maintenance or some other service, we can help! Call 813-461-6243 today!

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