Get Your HVAC System Winter-Ready: Essential Tips for a Cozy Season
Prepare your HVAC system for winter with these essential maintenance tips from C.S.W. Power Solutions — your licensed HVAC contractor in San Antonio.
Why Winter HVAC Maintenance Matters in San Antonio
While San Antonio winters are mild compared to the rest of the country, temperatures can drop into the 20s and 30s during cold fronts — and when they do, your heating system needs to be ready. The worst time to discover your heater isn't working is during a freeze event when every HVAC company in town is booked solid. As a licensed HVAC contractor (License #TACLA26479R), C.S.W. Power Solutions recommends scheduling your winter HVAC maintenance before the first cold snap hits, typically by late October or early November.
Replace Your Air Filters
This is the single most impactful maintenance task you can do yourself, and it costs less than $20. A dirty air filter restricts airflow, forcing your system to work harder and consume more energy. During heating season, check your filter monthly and replace it every 60-90 days — or more frequently if you have pets, allergies, or a dusty home. A clean filter improves indoor air quality, reduces strain on your blower motor, and can lower your energy bill by 5-15%. Use the filter size printed on the side of your current filter to buy the correct replacement.
Test Your Heating System Before You Need It
Don't wait for the first cold night to turn on your heater. Run it for 15-20 minutes on a mild day to verify it heats properly. A slight burning smell during the first run is normal — that's dust burning off the heat exchanger. But if the smell persists, if you hear unusual banging or squealing noises, or if the system cycles on and off rapidly (short cycling), schedule a professional inspection. These symptoms can indicate a cracked heat exchanger, a failing blower motor, or a thermostat malfunction — all of which are easier and cheaper to fix before they become emergencies.
Inspect and Seal Your Ductwork
Leaky ductwork can waste 20-30% of your heated air before it ever reaches your living spaces. Common signs of duct leaks include rooms that are consistently colder than others, excessive dust around vents, and higher-than-expected energy bills. While you can seal visible duct joints with mastic sealant or metal-backed tape (never use standard duct tape — it deteriorates quickly), a professional duct inspection can identify hidden leaks in attic or crawl space runs that you can't easily access.
Check Your Thermostat Settings and Programming
If you have a programmable or smart thermostat, update your schedule for winter. The Department of Energy recommends setting your thermostat to 68°F when you're home and awake, and lowering it 7-10 degrees when you're asleep or away. This simple adjustment can save up to 10% annually on heating costs. If your thermostat is more than 10 years old or uses mercury, consider upgrading to a Wi-Fi-enabled model that lets you adjust settings remotely and provides energy usage reports.
When to Upgrade Your HVAC System
If your heating system is over 15 years old, requires frequent repairs, or can't maintain consistent temperatures throughout your home, it may be time for a replacement. Modern HVAC systems are significantly more energy-efficient — a new high-efficiency heat pump or furnace can reduce your heating costs by 20-40% compared to an older unit. C.S.W. Power Solutions provides free estimates on HVAC system replacements and can help you select the right system for your home's size and layout. Call us at 210-504-9796 to schedule your winter maintenance or discuss upgrade options.
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C.S.W. Power Solutions is a veteran-owned, licensed contractor serving San Antonio and surrounding areas. Licensed Electrician (#TECL31793), Licensed Plumber (#RMP37882), Licensed HVAC (#TACLA26479R).