You know that feeling when you realize your mini split AC unit isn't cooling as well as it used to? The airflow seems weaker, and it's struggling to keep your room at a comfortable temperature. Before you buy a new mini split, let's find out if the coils are dirty and in need of cleaning. A clogged mini-split leads to higher energy bills and discomfort, but cleaning is easier than you think. You can have your unit running like new again in just a few simple steps. Read on to learn how to deep clean your mini split's coils and restore optimal performance to enjoy energy-efficient cooling this season.
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Step-by-Step Guide to Cleaning Mini Split Coils
Now that you've decided to clean your mini split AC unit, it's time to dive in. This step-by-step guide will walk you through the coil cleaning process to get your mini split cooling as efficiently as possible again.
Gather Your Supplies
Before getting started, assemble the necessary tools and cleaning products:
Coil cleaning spray or solution
Scrub brush
Vacuum with hose attachment
Protective gloves, eyewear and mask
Rags or towels
Plastic sheeting or tarp
Shut Off the Power
For safety, turn off the power to your mini split at the breaker before cleaning the coils.
Remove the Coil Cover
Locate the coils behind your indoor unit. Remove any cover panel to access the coils. Be very careful not to damage any of the delicate fins.
Clean the Coils
Spray the coil cleaning solution liberally on both sides of the coils. Let it sit for a few minutes. Use the scrub brush to loosen any caked-on debris and grime. Vacuum up the loosened dirt with the hose attachment. Wipe down the coils with damp rags to rinse away any remaining dirt and cleaning product.
Rinse and Reassemble
Use a rag to wipe away any excess moisture from the coils. Replace the coil cover panel. Turn the unit back on and test to ensure proper airflow before putting the tarp and tools away.
Regularly cleaning your mini split AC coils, especially before the start of each cooling season, will help keep your unit running efficiently for years to come. While it may seem like a chore, consistent maintenance is key to avoiding costly repairs down the road. Keep your cool this summer with a quick DIY coil cleaning!
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Supplies You'll Need to Clean Mini Split Coils
To clean the coils on a mini split air conditioner, you'll need to gather a few basic supplies:
Cleaning Solution
You'll want an alkaline coil cleaner formulated for mini-split units. These specialized cleaners will help break down built-up dirt and grime on the coils without damaging the fins or internal components. Look for a non-toxic, biodegradable option.
Protective Gear
Wear rubber gloves, protective eyewear like goggles, and old clothes you don't mind getting dirty. The cleaning solution can irritate your skin and eyes.
Scrubbing Tools
Pick up a coil cleaning brush, fin comb, and scrub pads. The brush will loosen the caked-on debris between the fins. The comb and pads will wipe the surface clean. You may also want cotton swabs for tight spaces.
Accessories
Have ready a bucket or pan to catch drips, a spray bottle to apply the solution, towels to wipe up any spills, and plastic sheeting or a tarp to protect the area below the unit from overspray and drips.
Optional But Helpful
A coil cleaning pump sprayer will make applying the solution quick and easy. Look for an adjustable spray pattern.
A coil cleaning hose or coil flushing tool can help rinse away dirt and grime from between the fins. Attach it to your hose or sink faucet.
A fin straightening comb will straighten any bent fins to ensure maximum airflow and efficiency.
Why It's Important to Clean Mini Split Coils
Keeping your mini split AC unit clean and well-maintained is key to efficiency and longevity. The coils, in particular, need regular cleaning since they can easily get clogged with dust, dirt, and debris over time. For optimal system performance, consider factors like a mini split sizing calculator. Neglecting to clean the coils will significantly reduce the unit's performance and energy efficiency.
Reduced airflow. As the coils get dirtier, less air can circulate through the unit. This means your AC has to work harder to cool the same space, reducing its efficiency and lifespan.
Higher energy bills. A clogged filter forces the AC to run longer to cool your home, using more energy in the process. By cleaning the coils regularly, you can lower your utility bills by up to 5-15% annually.
Premature breakdowns. Excess strain on the AC's components leads to faster wear and tear, increasing the likelihood of expensive repairs or replacements. A well-maintained unit will provide many years of reliable service.
Poor temperature regulation. Dirty coils make it difficult for the AC to properly control the temperature in your home. You may find certain rooms are too warm while others are too chilly. Cleaning the coils helps ensure even, consistent cooling throughout your living space.
Unhealthy air quality. Built-up grime on the coils can become a breeding ground for mold, bacteria, and allergens that then circulate through your home. By cleaning the coils, you improve your indoor air quality and create a healthier environment split AC unit is clean and well-maintained is key to efficiency and longevity. The coils, in particular, need regular cleaning since they can easily get clogged with dust, dirt, and debris over time. Neglecting to clean the coils will significantly reduce the unit's performance and energy efficiency.
When to Clean Your Mini Split Coils
As a general rule of thumb, you should aim to clean your mini split coils once a season – ideally in the spring and fall. However, if you live in an area with high pollen counts or pollution, more frequent cleaning may be needed. It’s a good idea to check your coils at the start of each cooling season to determine if they need a refresh.
Some signs it’s time for a coil cleaning include:
Higher energy bills - Dirty coils have to work harder to cool your home, using more energy.
Strange noises - Clogged coils can cause rattling, grinding, or squealing sounds as your AC struggles.
Musty smells - Dirt and mildew buildup on coils can emit unpleasant odors into your home.
Room temperature issues - If some rooms seem warmer than others or your AC isn’t cooling as well, dirty coils could be the culprit.
Visible dirt or damage - inspect your outdoor condenser unit and indoor air handler for any visible dirt, debris, dents, or corrosion on the coils.
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Cleaning Mini Split Coils
So there you have it. Cleaning your mini split coils regularly helps your system run efficiently for years to come. Don't let dust buildup reduce your AC's cooling capacity and force the unit to work harder than needed. Just grab your vacuum with brush attachment, fin comb, spray bottle, wet rag, and coil cleaner, and spend an hour or so once or twice a year to keep those coils clean. Your mini-split will thank you with lower energy bills, better air circulation, and long-lasting performance. And you’ll be thankful next summer when your home stays nice and cool on the hottest days.
