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Texas weather is known for being unpredictable. Sudden temperature swings are common as cold fronts from the north clash with warm, humid air from the Gulf. These rapid changes can strain your HVAC system, wear out components, and drive up both energy and repair costs. Older systems are especially vulnerable because age, buildup, and outdated parts make them less efficient and more likely to fail. Preparing your aging HVAC system now can help it perform reliably and efficiently throughout the Dallas-Fort Worth winter. Here’s how to get it ready for fluctuating temperatures.
How Temperature Swings Impact Your HVAC System
When the temperature changes rapidly between day and night, your HVAC system must switch frequently between heating and cooling to maintain a steady indoor climate. This constant cycling places stress on motors, fans, and compressors, which increases wear and energy use. Over time, these fluctuations can lead to breakdowns and efficiency loss.
For older systems, the effects are even more noticeable. Dust buildup, worn parts, and outdated thermostats can limit performance. Scheduling seasonal maintenance that includes cleaning, inspection, and repair can help reduce strain, prevent unexpected breakdowns, and extend your system’s lifespan. Below are several ways to strengthen your HVAC system against Texas’ unpredictable temperature shifts.
Clean or Replace Your Air Filters
Clogged air filters are one of the most common causes of reduced HVAC performance. Dirty filters restrict airflow, forcing your system to work harder and use more energy. This not only leads to uneven temperatures but also causes dust and allergens to circulate throughout your home. A clean filter improves airflow, helps maintain efficiency, and contributes to better indoor air quality.
Most filters should be replaced every 30 to 90 days, but homes with pets or allergy sufferers may need more frequent changes. Replacing filters regularly ensures smooth airflow and helps your system adapt to temperature swings without strain.
Have Your Ductwork Cleaned
If your home uses ducts to distribute air, they must be clean and free from blockages. Dust, dirt, and even mold can build up inside ductwork, restricting airflow and causing uneven heating or cooling. This not only impacts comfort but can also overwork your HVAC system and shorten its lifespan.
Signs that your ducts need attention include weak airflow, inconsistent room temperatures, or excessive dust around vents. A professional duct cleaning removes buildup, improves air circulation, and helps your system operate more efficiently and evenly.
Set Efficient Temperature Ranges
Keeping your thermostat at an energy-efficient setting helps your HVAC system maintain a stable indoor temperature without excessive cycling. During winter, aim for a setting no higher than 68 degrees Fahrenheit, and during summer, no lower than 78 degrees Fahrenheit. These temperatures balance comfort and efficiency, reducing unnecessary system strain.
If you are away from home for long periods, raise or lower your thermostat slightly to save energy. For example, you can set it around 80 degrees during summer days when you’re out, then adjust it when you return. Consistent thermostat management helps your system run smoothly through Texas’ unpredictable weather.
Clean Your HVAC Components
Even though most systems are enclosed, dirt and debris can still collect on coils, fans, and other parts. This buildup limits airflow and heat exchange, forcing your system to run longer and work harder. Professional cleaning ensures these components stay clear and functional, improving overall efficiency and performance.
During cleaning, a technician can also identify worn or failing parts and fix them before they lead to major issues. Preventive maintenance like this helps avoid unexpected breakdowns when you need heating or cooling the most.
Seal Air Leaks and Improve Insulation
Air leaks around windows, doors, or duct connections allow conditioned air to escape and outdoor air to enter. This makes your HVAC system run longer to maintain temperature, increasing energy use and wear. Sealing leaks and improving insulation help stabilize your home’s indoor climate and reduce unnecessary strain on your system.
Use caulk or weather stripping to seal gaps and cracks, and consider upgrading insulation in attics or crawl spaces. These small improvements make a significant difference in energy efficiency and comfort during seasonal temperature swings.
Check and Maintain Refrigerant Levels
Refrigerant plays a key role in your system’s ability to heat and cool effectively. If levels are low, your HVAC unit must work harder to absorb and transfer heat, which can lead to higher energy use and possible component damage. Low refrigerant can also cause coils to freeze and lead to compressor failure.
Have a professional technician check your refrigerant levels during seasonal tune-ups. Keeping them at the correct level ensures your system maintains consistent performance, even during wide temperature changes.
Inspect Your Ventilation and Insulation
Proper ventilation and insulation work together to keep your home comfortable and your HVAC system efficient. Good ventilation allows fresh air to circulate, reducing the buildup of dust, allergens, and humidity. Insulation keeps indoor temperatures steady, minimizing the impact of outdoor fluctuations. Together, they prevent your HVAC unit from overworking.
Make sure your attic, walls, and ducts are well insulated and free from blockages. You can also improve air quality by using air purifiers and keeping humidity levels below 50 percent. Cleaning debris away from your outdoor unit will further improve airflow and system health.
Schedule a Professional Tune-Up
Seasonal HVAC maintenance is one of the best investments you can make for your home. A professional tune-up includes cleaning, inspection, lubrication, and calibration of key components. It ensures your system runs efficiently and helps identify small issues before they turn into major repairs. This proactive care extends the life of your equipment and keeps your energy bills under control.
To keep your older system running smoothly through Texas’ unpredictable winters, schedule a service appointment with On Time Experts. We provide expert furnace repair, HVAC maintenance, and air quality solutions throughout the Dallas-Fort Worth area. Contact us today to prepare your home for the season ahead and enjoy reliable comfort all year long.
Winter is an important season for maintenance but there are additional steps to take in other seasons! Read more about fall maintenance!
