Mini Split Cleaning in NL: How Often Should You Do It?

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  • Author Micheal Penney
  • Published July 7, 2025
  • Word count 881

In Newfoundland and Labrador, where the weather can swing from damp and chilly to hot and humid, mini split cleaning isn’t just a seasonal chore—it’s an essential part of home maintenance. Mini split heat pump systems are known for their energy efficiency and quiet comfort, but to keep them running at their best, regular cleaning is a must.

So, how often should you clean your mini split? And what factors should you consider if you live in NL? Let’s explore the answers with the help of DeepClean NL—Newfoundland’s trusted experts in professional mini split cleaning services.

Why Mini Split Cleaning Matters

Your mini split system works hard all year to maintain a comfortable temperature inside your home. Over time, dust, dirt, mold, and allergens build up inside the unit’s filters, coils, and blower fans. This can lead to:

Reduced airflow and efficiency

Higher electricity bills

Musty or unpleasant odors

Increased allergens in your air

Potential mechanical issues or breakdowns

Routine mini split cleaning not only extends the life of your system but also keeps your indoor air healthy and clean.

General Cleaning Frequency Guidelines

At a minimum, mini splits should be cleaned twice a year.

But depending on usage and your living environment, some parts may need attention more frequently. Here's a breakdown of how often each component should be cleaned:

Component Cleaning Frequency DIY or Professional?

Air Filters Every 1–2 months DIY

Interior Coils & Blower Every 6–12 months Professional

Drain Line & Pan Every 6 months Professional

Outdoor Condenser Unit Every 3–6 months DIY / Professional

Full System Deep Clean Once a year (minimum) Professional

Factors That Affect Cleaning Frequency in Newfoundland

Newfoundland’s unique environment means you may need to adjust your mini split cleaning schedule. Here’s why:

  1. Coastal Humidity

The salty, damp air can lead to faster buildup of mold and mildew inside your mini split. Homes near the coast should consider cleaning the internal components more often—ideally every 6 months.

  1. Heating and Cooling Usage

If you use your mini split year-round for both heating and cooling, it will accumulate dirt and dust more quickly than a seasonal system. More use = more frequent cleaning.

  1. Pets and Allergies

If you have pets or household members with allergies, the filters can clog up with hair, dander, and allergens quickly. Clean your filters every 4–6 weeks to maintain air quality.

  1. Indoor Air Quality

Do you smoke indoors? Cook often? Burn candles? All of these contribute to more indoor pollutants that end up trapped in your mini split. Regular cleaning helps maintain healthy airflow.

DIY vs. Professional Cleaning

There are parts of mini split cleaning you can do yourself, and others that are best left to professionals like DeepClean NL.

✅ DIY Cleaning Tasks:

Remove and rinse air filters monthly

Wipe down the exterior with a damp cloth

Gently vacuum around the vents and louvers

Clear debris around the outdoor unit

🚫 Leave It to the Pros:

Cleaning internal blower wheels and evaporator coils

Flushing and sanitizing the drain line

Disinfecting mold and mildew

Checking electrical and mechanical components

Full disassembly and reassembly

DIY maintenance can help between professional visits, but to fully protect your system and health, you should schedule a professional mini split cleaning at least once a year.

What’s Included in DeepClean NL’s Professional Mini Split Cleaning?

At DeepClean NL, we provide a comprehensive cleaning service that goes beyond the basics. Our technicians are trained to safely clean and sanitize every part of your unit using eco-friendly, non-toxic products.

Here’s what’s included in a professional cleaning:

Filter and coil cleaning

Blower wheel and fan blade wash

Drain line flushing and mold removal

Odor treatment and air sanitizing

Full inspection of electrical and refrigerant systems

Functional testing of the unit after cleaning

Our services are fast, reliable, and available across St. John’s, Conception Bay South, Paradise, Mount Pearl, and surrounding areas.

Signs It’s Time for a Cleaning

Not sure if your system needs attention? Watch for these red flags:

Weak airflow

Increased energy bills

Bad smells from the unit

Water dripping from the indoor head

Excessive dust in your home

Allergy symptoms worsening indoors

These are all strong indicators that your system is overdue for a deep clean.

Book a Cleaning with DeepClean NL Today

Don’t wait for your mini split to show signs of trouble. Regular maintenance can prevent costly repairs and keep your home air clean and safe. Whether you need a one-time cleaning or ongoing maintenance, DeepClean NL offers expert mini split cleaning tailored to your needs.

Why Choose DeepClean NL?

Certified HVAC professionals

Over 10 years of experience

Eco-friendly cleaning methods

Honest pricing and free estimates

Serving homes across Newfoundland

Final Thoughts

To keep your mini split performing its best in Newfoundland’s climate, aim to:

Clean filters monthly

Clean exterior vents bi-weekly

Schedule professional mini split cleaning annually

Watch for signs that your unit needs extra attention

Trust the experts at DeepClean NL to help you maintain a comfortable, efficient, and healthy home. Your mini split deserves more than a quick wipe—it deserves the professional care that keeps it running like new.

📞 Call Today: 709-771-2227

🌐 Visit Us: www.deepcleannl.com

📍 Serving St. John’s, CBS, and all of Newfoundland

DeepClean NL – Your Local Experts in Mini Split Cleaning.

In Newfoundland and Labrador, where the weather can swing from damp and chilly to hot and humid, mini split cleaning isn’t just a seasonal chore—it’s an essential part of home maintenance. Mini split heat pump systems are known for their energy efficiency and quiet comfort, but to keep them running at their best, regular cleaning is a must.

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