How to Maintain an Air Conditioning System

December 2, 2025

How to Maintain an Air Conditioning System

Proper air conditioning maintenance is essential for keeping your system running efficiently, improving indoor air quality, and extending its lifespan. Regular upkeep prevents unexpected breakdowns, reduces energy costs, and ensures that your AC provides consistent cooling throughout the year. Simple tasks like replacing filters and cleaning the unit can make a significant difference in performance.


Modern Heating & Plumbing Co. in Gurnee, IL, provides professional Heating & Air Conditioning maintenance services to help homeowners and businesses keep their AC systems in top condition. By following a routine maintenance plan, you can avoid costly repairs and maintain a comfortable indoor environment.

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Inspect and Replace Air Filters

Air filters play a crucial role in maintaining air quality and system efficiency. Over time, filters accumulate dust, debris, and allergens, restricting airflow and forcing the AC unit to work harder. It is recommended to check filters every one to three months and replace them as needed to ensure proper airflow and improve energy efficiency.

  • Replace filters every 1-3 months
  • Improves airflow and efficiency
  • Enhances indoor air quality
  • Reduces strain on the AC unit

Clean Condensate Drain

The condensate drain removes moisture that collects as your AC cools the air. Over time, this drain can become clogged with algae, mold, and debris, leading to water damage and system malfunctions. Regularly flushing the drain line with a mixture of water and vinegar can prevent blockages and keep the system running efficiently.

  • Prevents water leaks and damage
  • Reduces mold and algae growth
  • Simple maintenance prevents costly repairs
  • Improves system efficiency
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Clean Indoor & Outdoor Units

Both the indoor evaporator coil and the outdoor condenser unit need regular cleaning to remove dirt, dust, and debris. A dirty AC unit struggles to cool efficiently and may overheat, leading to higher energy consumption and potential damage. Keeping the unit clean helps maintain optimal performance and prolongs its lifespan.

  • Remove dirt and debris from outdoor condenser
  • Clean evaporator coils for better cooling
  • Prevents system strain and overheating
  • Improves energy efficiency

Scheduled Annual Heating & Air Conditioning Servicing

Routine professional maintenance is essential for detecting potential issues before they become major problems. An annual Heating & Air Conditioning servicing by a trained technician includes system inspections, refrigerant level checks, electrical component testing, and thorough cleaning. Professional servicing helps maximize the lifespan of your AC unit and ensures peak performance throughout the cooling season.

  • Annual inspection prevents unexpected breakdowns
  • Ensures refrigerant levels are adequate
  • Detects and resolves minor issues early
  • Increases system lifespan and efficiency
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Why Choose Modern Heating & Plumbing Co. in Gurnee, IL?

Modern Heating & Plumbing Co. offers expert Heating & Air Conditioning maintenance, repair, and installation services to keep your air conditioning system in optimal condition. Their team of certified professionals provides thorough inspections, efficient repairs, and preventative maintenance solutions to ensure long-term system reliability. With their commitment to quality service, energy efficiency, and customer satisfaction, they are the trusted choice for AC maintenance in Gurnee, IL.

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