mom and daughters looking out at the snow

Preparing Your HVAC System for Missouri's Winter Weather

As the cold Missouri winter approaches, it’s time to prepare your home’s heating system for the chilly months ahead. A well-maintained HVAC system not only ensures comfort during the winter but can also prevent costly repairs and improve energy efficiency. If you’re a homeowner with a DIY approach to maintenance, this guide will walk you through the essential steps to get your HVAC system ready for Missouri’s unpredictable winter weather.

1. Change the Air Filters

The air filter is one of the easiest parts of your HVAC system to maintain, but it’s also one of the most important. A clogged or dirty filter can reduce airflow, causing your heating system to work harder and potentially leading to overheating or system failure.

DIY Tip:

Replace the air filter every 1-3 months, especially if you have pets or live in an area with a lot of dust or allergens.

Check the filter size and choose a high-efficiency filter (rated MERV 8-12) to trap more particles and improve indoor air quality.

2. Clean the Vents and Ducts

Over time, dust, dirt, and debris can accumulate in your vents and ducts, restricting airflow. Cleaning them helps improve efficiency and ensures warm air flows freely through your home.

DIY Tip:

Use a vacuum cleaner with a hose attachment to clean the vents and remove dust buildup.

If you’re up for it, consider using a duct cleaning brush to reach deeper into the ducts, or hire a professional if you suspect there is extensive buildup that might require a thorough cleaning.

3. Inspect and Seal Duct Leaks

Leaky ducts can lead to heat loss, making your HVAC system work harder to keep your home warm. It’s essential to inspect the ductwork for leaks, particularly in unconditioned areas like the attic, crawl spaces, and basement.

DIY Tip:

Turn your system on and feel for drafts around the ducts, especially where they join at seams and joints.

Use mastic sealant or HVAC tape to seal any gaps. Avoid using regular duct tape, as it may not withstand the temperatures and airflow in your system.

4. Check the Thermostat

Your thermostat is the command center of your HVAC system, so making sure it’s functioning correctly is vital for maintaining comfort and energy efficiency. A miscalibrated thermostat can lead to uneven heating and higher energy bills.

DIY Tip:

Test the thermostat by setting it to a few different temperatures and ensuring that your system responds properly.

If your thermostat is old, consider upgrading to a programmable or smart thermostat, which can save you money by automatically adjusting the temperature based on your schedule.

5. Inspect the Heat Pump or Furnace

Your furnace or heat pump is the heart of your HVAC system, and ensuring it's working efficiently is crucial for Missouri's winter months. Regularly inspecting these components can help prevent breakdowns and improve overall system performance.

DIY Tip:

Check for any visible wear or signs of damage on the furnace or heat pump. Listen for unusual sounds, such as rattling or squealing, which could indicate an issue.

If you have a furnace, ensure the burner is clean and check the blower fan for debris.

If your system uses a heat pump, verify that the outdoor unit is free of ice and snow buildup. Clean the coils if needed and remove any obstructions.

6. Test the System Before the Cold Hits

Before the temperatures drop, it's a good idea to test your heating system to ensure it’s working as expected. This gives you time to address any issues before you’re in a rush to heat your home during the first cold snap.

DIY Tip:

Set the thermostat to heat mode and raise the temperature to test the system. Make sure warm air starts flowing within a few minutes. If not, it could indicate an issue with the system that needs attention.

7. Ensure Proper Insulation

Proper insulation can make a significant difference in how effectively your HVAC system works to keep your home warm. Check areas such as your attic, walls, and floors to ensure they are properly insulated.

DIY Tip:

Inspect your attic for any gaps or areas where insulation may have shifted or worn down. Adding or replacing insulation can significantly improve energy efficiency and reduce heating costs.

Check doors and windows for drafts. Adding weather stripping or caulking around these areas can help prevent warm air from escaping.

8. Schedule a Professional Tune-Up (Optional)

While DIY maintenance is important, having a professional HVAC technician perform a seasonal tune-up can help identify potential issues before they become serious. Technicians have the tools and expertise to clean parts, check refrigerant levels, and make adjustments that can prolong the life of your system.

DIY Tip:

If you haven’t had a professional inspection in the past year, consider scheduling one. A little investment now can prevent major issues later.

Conclusion

Missouri winters can be tough, but with the right preparation, your HVAC system can keep your home warm and comfortable all season long. By performing these simple DIY tasks, you’ll not only extend the life of your HVAC system but also improve its efficiency and help reduce your energy bills. With a little effort upfront, you’ll be ready to enjoy a cozy winter, no matter what the weather throws at you.