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Why is maintaining a clean HVAC filter in your Charleston vacation rental so important?

As Charleston's leading vacation rental cleaning company, we see it every day across the hundreds of vacation rentals we clean: changing the HVAC filter in your Charleston vacation rental is absolutely critical.


It's important to do so from a property management perspective, but also a cleaning one. In fact, because we’ve seen so many Charleston property managers forget to do basic but critical tasks like changing out HVAC filters, we now offer property management services ourselves, including the changing of air filters.


So, without further ado, here are important reasons why you should regularly change the HVAC filter in your Charleston vacation rental.


High Humidity

Charleston has a humid subtropical climate, with hot and humid summers. High humidity levels lead to increased moisture in the air, which can promote the growth of mold and mildew in your vacation rental.

A clean HVAC filter helps prevent the accumulation of moisture and reduces the risk of mold growth in the system, especially the ducts that crisscross your home delivering cool air to each room. Mold in your HVAC system translates to mold throughout your home.

Over the years, we’ve walked into many vacation rentals that, in a matter of days, sprouted nasty mold all over the home because the property manager had forgotten to change out the HVAC filters. And you know this already, but mold is bad – it means lost bookings, pricey mold remediation, and additional cleaning fees.

Allergens and Pollutants

Charleston's warm climate and abundant vegetation lead to higher levels of pollen, dust, and other allergens in the air. A clean HVAC filter captures these airborne particles, improving indoor air quality and reducing allergy symptoms for your guests. Talk to your HVAC technician, but we personally believe an HVAC filter with a MERV rating between 13 and 16 is perfect for your Charleston vacation rental.

And by the way, what is a MERV rating? It’s a scale from 1 to 20 telling you how much your filter removes from the air. The higher the rating, the higher the filtration. A rating between 13 and 16 means most of your common particles, including smoke, pollen and mold spores, will be filtered out.

Salt Air

Especially if your vacation rental is on the islands, for example Folly Beach, Isle of Palms or James Island, Charleston's coastal location exposes HVAC systems to salt air, which can accelerate corrosion and damage system components. A clean filter helps prevent salt particles from entering the system and causing damage, prolonging the lifespan of the HVAC equipment in your vacation rental.

Energy Efficiency

A dirty or clogged HVAC filter restricts airflow, forcing the system to work harder to maintain the desired temperature. This increased workload can lead to higher energy consumption and utility bills. By regularly replacing the filter you can improve the efficiency of your HVAC system and reduce energy costs.


A clean HVAC filter ensures proper airflow throughout the home, helping to maintain consistent temperatures and optimal comfort levels. A clogged filter can result in uneven heating or cooling, hot or cold spots, and reduced indoor comfort. The last thing you want is an angry guest messaging you at 11PM that the AC is not cooling. Save yourself the headache, change your air filter frequently.

Preventive Maintenance

Regularly cleaning and replacing the HVAC filter are crucial aspects of preventive maintenance for your HVAC system. It helps prevent breakdowns, extends the lifespan of the equipment, and reduces the need for costly repairs. If you hire Purple Dot Cleaning to property manage your Charleston vacation rental we'll be certain to regularly change your HVAC filters, as well as a host of other items to keep your property in tip-top shape.


In sum, maintaining a clean HVAC filter in your Charleston vacation rental is essential for having good indoor air quality, preventing mold growth, protecting system components from damage, improving energy efficiency, ensuring comfort, and prolonging the life of the HVAC system. If we can be of assistance cleaning and/or managing your vacation rental, contact us, we're always here for you.



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