How to Clean Furnace Coils in 5 Easy Steps

Picture this: It's a cold winter evening, you're cozying up with your favorite book, and just as you're about to dive into that gripping chapter, you notice the room isn't as warm as it should be. Your furnace is on, but something's not quite right. It could be those sneaky furnace coils hiding away, quietly accumulating grime, and affecting your unit's efficiency. Don't worry! You can reclaim your warm sanctuary with some knowledge and some elbow grease.

Furnaces, an integral component of a household, particularly during those chilly Oregon winters, are only as efficient as their care and maintenance. The furnace coil is one overlooked part, yet vital for efficient functioning. Clean coils optimize heating performance and prolong the furnace's lifespan, ensuring you get more bang for your buck. Let's dive into understanding these coils better and demystifying the cleaning process.

What are furnace coils?

Furnace coils, or heat exchangers, are integral to the heating process. These serpentine tubes or coil structures are where the actual magic happens. As the furnace burns fuel (gas, oil, or another type), these coils absorb the heat. The blower then pushes air across these hot coils, warming it before distributing it throughout your living space.

Over time, like any other component exposed to consistent use, these coils can become coated with dust, dirt, and other airborne particles. When this happens, the heat transfer efficiency can be compromised, leading to a drop in your furnace's performance. Not only does this lead to an uncomfortably cold home, but it also forces the furnace to work harder, resulting in increased energy bills.

Understanding the structure and role of furnace coils is pivotal. Now that we've shed light on their importance, it's time to ensure they're always in tip-top shape.

How to Clean Furnace Coils

Maintaining a clean furnace is key to its efficient operation. Among its components, the furnace coils, as discussed earlier, play a pivotal role in the heating process. Over time, these coils can become dirty, affecting the furnace's overall performance. Cleaning the coils ensures that the furnace runs smoothly, heats effectively, and operates at optimal energy efficiency. Here's a step-by-step guide to cleaning furnace coils by Best Owner Direct, your local HVAC experts in Hillsboro, Oregon.

Turn Your Furnace Off

Safety first! Before diving into any cleaning or maintenance procedure, always ensure the power supply to the furnace is turned off. You can do this by switching off the main power supply or the furnace switch, usually located on or near the furnace. After switching off, give it a few minutes for the furnace to cool down.

Locate the Coils

The coils, or heat exchangers, are typically housed behind an access panel on the furnace. This panel can be removed either by loosening screws or by pulling it off, depending on your furnace model. Once removed, you'll have clear access to the coils. Before proceeding further, take a moment to inspect the coils. If they are severely damaged or have visible cracks, it's best to call a professional. However, if they're only dirty, proceed to the next step.

Clean the Coils

Use a Brush:

For light dust and dirt, a soft-bristle brush can be effective. Gently brush the coils, making sure you cover all areas. Ensure your strokes are light to prevent any potential damage to the coils.

Compressed Air Method:

If the dirt on the coils is somewhat stubborn or areas are hard to reach with a brush, consider using compressed air. Hold the air nozzle at a 90-degree angle relative to the coil to prevent further dirt pushing. Blow the air in short bursts to effectively remove dirt and dust.

Use a Detergent and Some Water:

You might need to step up your cleaning method for heavier grime and dirt. Mix a mild detergent with warm water in a spray bottle. Lightly spray the solution onto the coils. Let it sit for a few minutes to break down the dirt. Using a soft cloth, gently wipe down the coils. Ensure not to oversaturate the coils and that they're dry before proceeding.

Put Back the Furnace Coil Access Panels

Once you're satisfied with the cleaning, it's time to reassemble. Carefully place the access panel back on the furnace. Secure it in place, either by tightening the screws or by snapping it back into position.

Turn the Power On

After ensuring that everything is back in place and there are no tools or cleaning materials left behind, restore power to the furnace. Switch on the main power supply or the furnace switch. Allow the furnace to run for a few minutes to ensure everything works smoothly.

Crucial Things to Note When Cleaning Furnace Coils

Cleaning furnace coils is a straightforward process requiring a delicate touch. First, always prioritize safety by ensuring the furnace is turned off before starting. When cleaning, gentle strokes, whether using a brush or cloth, are essential to avoid damaging these delicate components. Always avoid harsh chemicals, opting instead for mild detergents. Lastly, ensure the coils are thoroughly dry before restoring power, as moisture can damage components or create a potential hazard.

Need Help Cleaning Your Furnace? Let Us Help!

While DIY maintenance can be rewarding, sometimes you need an expert's touch. Best Owner Direct, with years of HVAC experience in Washington County and surrounding areas, we ensure your furnace coils are immaculate and functioning efficiently. Our team of professionals is equipped with the right tools and knowledge to handle your furnace's specific needs. When in doubt or when you prefer a professional's precision, give us a call. We’re committed to keeping your furnace in peak condition, ensuring your comfort all winter long.

‍