Pre-Summer AC Checklist for San Antonio Homeowners
Essential Pre-Summer AC Checklist for San Antonio Homeowners With temperatures already climbing toward the 80s in April and May, San Antonio homeowners know that summer heat isn't far behind. Once we...
Pre-Summer AC Checklist for San Antonio Homeowners
With temperatures already climbing toward the 80s in March and April, San Antonio homeowners know that summer heat isn't far behind. Once we hit those brutal 100°F+ days that can stretch from June through September, your air conditioning system will be working overtime to keep your family comfortable. Preparing your AC system before the peak cooling season arrives saves you from costly breakdowns and keeps your energy bills from going through the roof.
After 22+ years of servicing HVAC systems across the San Antonio metro area I've seen countless emergency calls that could've been prevented with proper pre-season maintenance. Don't be the one calling us at 2 PM on a 105-degree Saturday begging for emergency service.
Start with Your Air Filter
Check and replace your air filter. Period.
In San Antonio's dusty environment, especially during cedar allergy season from December through February, filters get clogged faster than you'd think. A dirty filter restricts airflow, making your system work harder and potentially causing it to freeze up during those first hot days.
Check your filter monthly but expect to replace it every 30-60 days during heavy use periods. Got pets or family members with allergies? You'll need to change it even more frequently. A quality pleated filter with a MERV rating between 8-11 works well for most San Antonio homes. Don't go crazy with higher MERV rated filters unless your system was designed for it — you'll choke your unit.
Clean and Inspect Your Outdoor Unit
Your outdoor condensing unit takes a beating during our Texas winters and spring storms. Before summer arrives, give it some attention:
Remove leaves, branches, and debris from around the unit.
Check that the unit is level and hasn't shifted.
Ensure at least 2-3 feet of clearance around all sides for proper airflow
Look for any damaged fins or refrigerant line insulation
In neighborhoods with mature trees, pay special attention to clearing organic debris that accumulates over winter. This buildup can severely restrict airflow and cause your system to overheat when temperatures soar.
Test Your System
Before you desperately need your AC system to make sure it's operational. Make sure outdoor temperature is above 70°F. Set the thermostat to cooling mode and lower the temperature setting below indoor temperature. You should hear your system start up within a few minutes.
Got a programmable or smart thermostat? Review your settings and update them for the upcoming cooling season. Consider setting higher temperatures when you're away — even just a few degrees can save you money during peak summer months.
Check the batteries in your thermostat if it uses them. Dead batteries during a 105°F July day is not when you want to discover this problem.
Inspect Your Ductwork and Vents
Walk through your home and check all supply and return vents. Remove any furniture or storage items blocking airflow. In high humidity environments, good airflow is essential for both cooling and humidity control.
If you can access your ductwork in the attic or crawl spaces, look for disconnected or loose ducts, damaged or missing insulation, signs of moisture or mold growth, and rodent damage. Duct leaks in unconditioned spaces can waste your cooling energy — a costly problem when you're running your AC for 6+ months.
Found something you're not sure about? Call us. Better to check now than find out in August that half your cold air is being pumped into your attic.
Review Your Energy Bills
Pull out your energy bills from last summer to establish a baseline for this year. If your bills start climbing significantly higher than the same months last year that were similar temperatures, your system is losing efficiency and needs professional attention.
With CPS Energy rates and the extreme heat we experience, even a small drop in efficiency could mean significant costs over a cooling season.
Schedule Professional Maintenance
These DIY checks are important, but they don't replace professional maintenance. Your HVAC tech can perform tasks that homeowners can't safely do themselves: checking refrigerant levels and pressure, testing electrical components under load, cleaning evaporator coils, calibrating thermostats, and inspecting heat exchangers and safety controls.
In San Antonio's demanding climate, annual professional maintenance typically pays for itself in improved efficiency and avoided repairs. Systems that receive regular maintenance last longer and break down less frequently — crucial when you're depending on your AC for 200+ days per year.
Consider Upgrades Before Summer
If your system is struggling to keep up, making unusual noises, or requiring frequent repairs, spring is the ideal time to consider replacement. AC contractors stay swamped once temperatures hit the upper 90s, so addressing major issues before peak season means better availability and often better pricing.
Modern high-efficiency systems can significantly reduce energy costs compared to older units.
Don't Wait for the Heat
The worst time to discover AC problems is during a 103°F day in July when every HVAC company in town has a full schedule. Taking care of these maintenance items now, while temperatures are still manageable, helps to ensure your family stays comfortable all summer long.
If you discover any issues during your pre-summer inspection, or if you'd like professional maintenance to ensure your system is ready for another Texas summer, give us a call at (210) 561-COOL. We've been keeping San Antonio families comfortable since 2002, and we're here to help your AC system perform it's best when you need it most.
