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Your HVAC system works hard to keep your home comfortable. However, dust, dirt, and debris accumulate on the coils over time. This can reduce system efficiency and increase your energy bills. To prevent this from happening, we recommend regularly cleaning your evaporator and condenser coils.

While DIY coil cleaning is possible, professional maintenance ensures a thorough, damage-free cleaning that maximizes system efficiency. If you’re unsure about cleaning your coils or want expert service, Apollo Home offers professional HVAC maintenance to keep your system running at peak performance.

📞 Call Apollo Home at (513) 443-4212 to schedule professional coil cleaning today!

Understanding Your HVAC Coils

What Are HVAC Coils and What Do They Do?

Your HVAC system has two main types of coils:

• Evaporator Coils (Indoor Coils) – Absorb heat from indoor air, cooling it before circulating it back into your home
• Condenser Coils (Outdoor Coils) – Release heat outside, allowing the refrigerant to cool and cycle back to the evaporator

Signs Your HVAC Coils Need Cleaning

• Weak airflow or poor cooling performance.
• Higher-than-normal energy bills.
• AC unit running longer than usual.
• Visible dust, dirt, or mold buildup.
• Ice formation on evaporator coils.

🚨 Ignoring dirty coils can lead to costly repairs! If you notice these signs, it may be time to schedule professional AC maintenance.

How to Clean Coils on HVAC Unit (Step-by-Step Guide)

How to Clean HVAC Evaporator Coils (Indoor Coils)

Tools Needed: No-rinse evaporator coil cleaner, soft brush, vacuum with a brush attachment, gloves, screwdriver (if necessary)

1. Turn Off the Power – Shut off your HVAC system at the thermostat and breaker box
2. Access the Coils – Remove the air handler panel to expose the evaporator coils
3. Remove Loose Dust & Debris – Use a soft brush or vacuum to remove surface dirt
4. Apply No-Rinse Evaporator Coil Cleaner – Spray the cleaner evenly and let it dissolve grime
5. Clean the Drain Pan & Drain Line – Wipe down the drain pan and clear any clogs in the condensate drain line
6. Reassemble and Turn the System Back On – Secure all panels and restore power

📌 Pro Tip: Avoid using excessive water on evaporator coils to prevent mold growth and excess moisture buildup.

How to Clean HVAC Condenser Coils (Outdoor Coils)

Tools Needed: Hose with spray nozzle, foaming coil cleaner, soft brush, fin comb (optional)

1. Turn Off the Power – Always start by shutting off power at the disconnect switch
2. Remove Debris from the Unit – Clear leaves, grass, and dirt from around the condenser
3. Use a Hose to Rinse the Coils – Spray from the inside out to push debris away
4. Apply Coil Cleaner – Use a foaming coil cleaner and let it sit for 5–10 minutes
5. Rinse Thoroughly – Use low-pressure water to remove cleaner and debris
6. Straighten Bent Fins (Optional) – Use a fin comb to realign any bent fins for improved airflow
7. Turn the System Back On – Once dry, restore power and test operation

📌 Pro Tip: Never use a pressure washer on condenser coils. It can bend and damage the fins.

Common DIY Mistakes to Avoid

Many homeowners attempt to clean their HVAC coils, but simple mistakes can lead to costly damage. Avoid these common errors:

• Using high-pressure water – Can bend coil fins and restrict airflow
• Using harsh chemicals – Some cleaners can corrode coil surfaces
• Neglecting the drain pan – A clogged drain line can cause water damage
• Skipping safety precautions – Always turn off power before cleaning

📞 Not sure if you’re cleaning your coils correctly? Avoid the risk and schedule professional service with Apollo Home!

When to Call a Professional for HVAC Coil Cleaning

While DIY cleaning is helpful, there are times when professional maintenance is the best choice:

• Your coils are severely clogged or frozen
• You notice refrigerant leaks or mold buildup
• Your energy bills keep rising despite cleaning
• You’re uncomfortable opening your HVAC unit or working with electrical components

🚀 Apollo Home Tip: DIY coil cleaning helps, but professional maintenance ensures deep cleaning, efficiency, and longer HVAC life.

The Benefits of Professional HVAC Coil Cleaning

• ✔️ Deeper Cleaning – Experts remove stubborn grime that DIY methods can’t
• ✔️ Longer HVAC Lifespan – Reduces wear and tear on system components
• ✔️ Improved Air Quality – Prevents mold and bacteria buildup inside the unit
• ✔️ Energy Savings – Properly cleaned coils reduce energy usage by up to 30%
• ✔️ Early Problem Detection – Pros spot issues like refrigerant leaks before they become costly repairs

📞 Want a thorough HVAC coil cleaning? Call Apollo Home today!

Frequently Asked Questions About HVAC Coil Cleaning

Can I clean HVAC coils myself?

Yes, you can clean your HVAC coils yourself, but it’s easy to damage coils if you use the wrong tools or chemicals.

How often should HVAC coils be cleaned?

Ideally, you should clean your HVAC coils at least once per-year (preferably before summer). You may need more frequent cleaning if you have pets. Professional maintenance will keep your system running at peak efficiency.

What’s the best cleaner for HVAC coils?

Use a foaming coil cleaner for evaporator coils and a non-corrosive, no-rinse cleaner for condenser coils.

What happens if I don’t clean my HVAC coils?

Dirty coils force your system to work harder, increase energy bills, and shorten your HVAC system’s lifespan.

Schedule Professional HVAC Coil Cleaning with Apollo Home

Cleaning your HVAC coils regularly prevents breakdowns, reduces energy costs, and keeps your home comfortable year-round. While DIY cleaning can help, professional service ensures thorough and safe maintenance. Call Apollo Home at (513) 443-4212 to schedule a professional HVAC cleaning today!