DIY HVAC Maintenance Tips That Can Save You Money

Your HVAC system is one of the most expensive and complex pieces of equipment in your home. While major repairs should always be left to a licensed professional, there are several simple maintenance tasks you can perform yourself to keep it running smoothly and efficiently. A little DIY maintenance can go a long way in preventing costly breakdowns and lowering your monthly energy bills.

Here are a few key tasks for any homeowner:

1. Change Your Air Filters Regularly

This is the single most important maintenance task you can do. A clogged air filter restricts airflow, forcing your system to work harder, which increases energy consumption and can lead to premature failure.

• How often? For standard 1-inch filters, check them monthly and replace them at least every 90 days. If you have pets or allergies, you may need to replace them more frequently (every 30-60 days).
• How to do it: Locate the filter slot on your indoor air handler unit. Slide the old filter out (noting the direction of the airflow arrow printed on the side) and slide the new one in, making sure the arrow points in the same direction.

2. Keep Your Outdoor Unit Clean

The outdoor condenser unit needs to breathe. Over time, it can become clogged with leaves, grass clippings, dirt, and other debris.

• What to do: Turn off the power to the unit at the main circuit breaker first. Use a garden hose (on a gentle setting, not a power washer) to spray down the fins from the inside out to remove debris. You can also use a soft brush to gently clean the fins.
• Clear the Area: Ensure there is at least two feet of clear space around the entire unit. Trim back any shrubs, weeds, or overhanging branches.

3. Check and Clean Your Vents

Ensure all the supply and return air vents inside your home are open and unblocked by furniture, rugs, or drapes. A blocked vent disrupts the balance of your system. Use a vacuum with a brush attachment to periodically clean dust and debris from the vent covers.

4. Test Your Thermostat

A faulty thermostat can lead to inefficient operation. At the beginning of each season, test your system. Switch it to "Cool" and lower the temperature to ensure the AC kicks on, then switch to "Heat" and raise the temperature to check the furnace. Also, consider upgrading to a programmable or smart thermostat, which can save you significant money by automatically adjusting the temperature when you're away or asleep.

When to Call a Professional

While these DIY tips are helpful, they don't replace the need for an annual professional tune-up. A licensed HVAC technician can perform a more thorough inspection, check refrigerant levels, clean internal components, and ensure your system is operating safely and at peak performance. Think of it like changing the oil in your car—it's essential preventative maintenance.