How to Winterize Your HVAC System in St Louis


With winter approaching, it’s time to start thinking about ways to keep your home warm and cozy. One important aspect of winter preparation is winterizing your HVAC (Heating, Ventilation, and Air Conditioning) system. In St Louis, where the winters can be harsh, it’s crucial to ensure that your HVAC system is in optimal condition to handle the cold temperatures. Here are some tips on how to winterize your HVAC system in St Louis:

1. Schedule a Maintenance Check-Up:

Before winter arrives, it’s a good idea to have a professional HVAC technician inspect and service your system. They can identify any potential issues and make necessary repairs or adjustments. Regular maintenance can help improve the efficiency and longevity of your HVAC system, ensuring its performance during the winter months. Don’t wait until your system breaks down in the middle of a cold winter night – schedule a maintenance check-up now.

2. Clean and Replace Filters:

Dirty or clogged filters can restrict airflow and reduce the efficiency of your HVAC system. It’s essential to clean or replace the filters regularly, especially before the winter season. Clean filters ensure proper airflow and prevent dust, debris, and pollutants from circulating in your home. Additionally, clean filters improve indoor air quality and reduce the strain on your HVAC system by allowing it to operate more efficiently.

3. Check and Seal Air Ducts:

Leaky air ducts can significantly affect the performance of your HVAC system. Inspect your air ducts for any leaks or gaps, and seal them using duct sealant or metal tape. Properly sealed air ducts ensure that warm air is effectively distributed throughout your home, preventing any heat loss. This not only improves the overall comfort of your living space but also helps reduce energy wastage and lower heating costs.

4. Insulate Pipes and Vents:

Protecting your pipes and vents from freezing is crucial in St Louis winters. Frozen pipes can burst, causing extensive damage to your home. Insulating the pipes and vents helps keep them warm and prevents freezing. You can use foam insulation sleeves or wrap towels or blankets around the exposed pipes. Additionally, make sure to close any vents that are not in use to redirect the warm air to the areas that need heating the most.

5. Adjust Thermostat Settings:

During winter, you can save energy and reduce heating costs by adjusting your thermostat settings. Lower the temperature when you’re not at home or while you sleep, and increase it when you’re present. A programmable thermostat allows you to schedule temperature changes automatically. You can also consider investing in a smart thermostat that learns your preferences and optimizes your HVAC system’s performance accordingly.

6. Clear Outdoor Debris:

Before winter arrives, remove any debris, leaves, or branches that may have accumulated around your outdoor HVAC unit. Clearing the area around the unit ensures proper airflow and allows the system to function efficiently. Additionally, make sure there are no obstructions around the unit that could hinder ventilation. Keep the area clean and well-maintained throughout the winter season to prevent any damage or efficiency issues.

7. Consider a System Upgrade:

If your HVAC system is outdated or inefficient, winter may be the perfect time to consider upgrading to a more energy-efficient model. Modern HVAC systems are designed to provide better heating performance while consuming less energy. Investing in a new system can help reduce your energy bills and provide a more comfortable environment during the winter months.


Winterizing your HVAC system in St Louis is essential to ensure optimal performance and comfort during the cold season. Scheduling a maintenance check-up, cleaning and replacing filters, checking and sealing air ducts, insulating pipes and vents, adjusting thermostat settings, clearing outdoor debris, and considering a system upgrade are all important steps to take before winter arrives. By following these tips, you can enjoy a warm and cozy home while saving energy and reducing heating costs.

Need HVAC Services in St. Louis, MO?

Keep cool or stay warm with Ashley Brothers Heating & Cooling. Since 1999, Ashley Brothers have been providing residential and commercial services to the St. Louis and Jefferson County area. We specialize in the installation of new equipment, heating and cooling repair, and furnace cleaning. Craftsmanship is important, equipment choice is too. We work with only top brands like Amana, Goodman, York, and McLain. It is understandable that replacing or upgrading your equipment can be daunting. Ask us about financing. We repair all heating and cooling equipment brands. Heating and cooling repairs can happen at random, take advantage of our 24-hour emergency service. Call us today about your concerns.