HVAC System Maintenance Checklist

AC Maintenance Steps for Greenwood Homeowners

Preparing your air conditioner for spring isn’t just about flipping the thermostat from “heat” to “cool”—it’s about making sure your air conditioning system runs efficiently, reliably, and cost-effectively when you need it most. For homeowners in Greenwood, IN, and the surrounding areas, spring is the perfect time to take a few proactive steps to get your system ready. 

From changing air filters to cleaning coils and testing performance, these simple air conditioner maintenance tasks can make a big difference. Here is everything you need to do to keep your air conditioning unit in top shape before the temperatures climb.

Step 1: Change Your Air Conditioner Filters

One of the easiest yet most important AC maintenance tasks is replacing your air filter. A clogged or dirty filter restricts airflow. This forces your air conditioning system to work harder, which reduces system efficiency, negatively impacts indoor air quality, drives up utility bills, and can eventually cause damage that will require air conditioner repair to fix.

How to Change Your Air Filter

1. Turn Off Your System: For safety, always turn off your HVAC system before changing the filter.
2. Locate the Filter: It’s typically found in the return air duct, near the blower unit, or inside the air handler.
3. Check the Size: The correct filter size is usually printed on the frame of the old filter.
4. Replace the Filter: Insert the new filter with the arrows pointing in the direction of airflow.
5. Set a Reminder: Change your filter every 1-3 months, depending on usage and whether you have pets or allergies.

Think about upgrading to a high-efficiency filter for better indoor air quality, but make sure your system can handle the increased airflow resistance.

Step 2: Clean Your Outdoor Unit (Condenser Coils)

Over winter, leaves, dirt, and debris can accumulate around your outdoor AC unit, and grime can build up on the condenser coils. If you don’t clean this mess off, it will restrict airflow when you start using your air conditioning unit later on.

How to Clean Your Condenser Unit

1. Turn Off Power: Locate the power switch near the unit or shut off the breaker.
2. Remove Debris: Clear away leaves, grass, and dirt around the unit.
3. Clean the Coils: Use a garden hose (no pressure washer) to gently rinse off dirt. For a deeper clean, use a coil cleaner (available at most hardware stores).
4. Straighten Bent Coil Fins: If the aluminum fins on the coil are bent, use a fin comb to straighten them out for better airflow.

As you pull out patio furniture and outdoor toys for warmer weather, keep at least 2 feet of clearance around the unit to allow proper ventilation. Also, make sure to keep your condenser unit clean when you start mowing again this year—grass clippings can stick to the fins and pile up around the air conditioner.

Step 3: Check and Clean Your Indoor Coils and Drain Line

Your indoor evaporator coil absorbs heat and needs to stay clean for your AC unit to cool efficiently. The drain line, which removes condensation, can also get clogged and cause water leaks.

How to Clean the Evaporator Coil

1. Turn Off Power: Always shut off the power before working inside the unit.
2. Access the Coil: Open the panel on your indoor unit (usually near the furnace or air handler).
3. Use Coil Cleaner: Apply a no-rinse coil cleaner and let it work its magic.
4. Check for Mold: If you see mold, consider using an HVAC-approved cleaner.

How to Clean the Drain Line

1. Locate the Drain Line: Typically a white PVC pipe near the indoor unit.
2. Flush With Vinegar: Pour a cup of white vinegar down the drain to break up clogs and flush water through the line.
3. Check for Leaks: Make sure water flows freely to avoid potential water damage.

Step 4: Check Your Thermostat

Your thermostat communicates with the cooling system to your home comfortable. Spring is the perfect time to verify it’s working properly and set for energy efficiency.

What to Check

• Battery Life: If your thermostat runs on batteries, replace them if needed.
• Settings: Switch from “HEAT” to “COOL” and adjust the temperature a few degrees below room temperature to test if the AC kicks on.

If you don’t already have one, upgrading to a programmable or smart thermostat can help you save on cooling costs by automatically adjusting temperatures when you’re away.

A Better Solution for AC Maintenance: Schedule an Air Conditioner Tune Up

While DIY air conditioning maintenance is a great way to keep your air conditioner running efficiently, it doesn’t replace the benefits of a professional tune up. A professional air conditioning tune up is a more comprehensive solution that goes beyond the basics to ensure your system is in peak condition for the hottest months of the year. 

Instead of spending time cleaning coils, inspecting components, and testing performance yourself, a professional technician can handle everything for you—and catch potential problems before they turn into expensive air conditioning repairs.

What We Do During a Professional Air Conditioning Maintenance Tune Up

Brewer Heating & Cooling’s air conditioning maintenance services go beyond the basics to address every critical aspect of your cooling system. When you book air conditioning maintenance with us in Greenwood, IN, here’s what we do and how each step of the AC tune up process benefits your system:

• Replace or Clean Air Filters: Ensures proper airflow and improves indoor air quality.
• Inspect & Clean Evaporator and Condenser Coils: Removes dirt buildup to improve efficiency and cooling performance.
• Check & Clear the Drain Line: Prevents clogs that can lead to water damage and mold growth.
• Test Thermostat Calibration: Verifies accurate temperature control for maximum comfort.
• Inspect & Tighten Electrical Connections: Reduces the risk of electrical failures and improves system safety.
• Check Refrigerant Levels: Verifies your system has the right amount of refrigerant for optimal cooling.
• Lubricate Moving Parts: Reduces wear and tear on motors, fans, and other components.
• Inspect & Test Blower Components: Provides proper airflow and efficiency.
• Check for Duct Leaks & Blockages: Identifies any airflow restrictions that could be driving up energy bills.
• Measure System Performance: Tests startup, cooling cycles, and overall efficiency to ensure peak operation.

Scheduling a spring air conditioner tune up not only helps your system run more efficiently but also extends its lifespan and prevents costly breakdowns. At Brewer Heating & Cooling, we believe in honest, straightforward service, so you can trust that we’ll only recommend repairs or upgrading to a new air conditioning installation if they’re truly necessary.

At Brewer Heating & Cooling, we make it even easier to care for your HVAC systems, whether you rely on a central air conditioner, heat pump, or mini split to stay cool. Our Care-Free Comfort Plan includes regular maintenance, priority service, and discounts on repairs. It’s an easy way to keep your system in top shape without the hassle of remembering tune ups.

A Little AC Maintenance Goes a Long Way

Spring HVAC maintenance isn’t just about comfort—it’s about efficiency, cost savings, and avoiding unexpected breakdowns. By following these steps, you can make sure your AC unit is ready to handle the summer heat while keeping your energy bills in check.

Need professional AC maintenance in Greenwood, IN? Brewer Heating & Cooling is here to help. Our honest, no-nonsense approach means you get straightforward service you can trust. Call us today to schedule your spring air conditioning tune up and enjoy worry-free comfort all season long.