The Best Maintenance Tips to Keep Your AC Running

Texas heat is no joke with temperatures heating over 100 degrees every summer. Having a well-maintained air conditioning system is a must during the extreme heat.

Regular maintenance can prevent costly repairs, improve energy efficiency, and extend your system’s lifespan. Here are the essential air conditioner maintenance tasks every homeowner should perform.

Quick Reference: Monthly AC Maintenance Checklist

1. Replace or clean your air filter
2. Check thermostat settings and operation
3. Flush condensate drain line with vinegar
4. Vacuum vents and registers (every 3-4 months)
5. Visually inspect outdoor condenser unit for debris
6. Listen for unusual noises or odors

Change Your Filter

A clogged filter blocks airflow and forces your cooling system to work harder, increasing energy consumption and energy bills while reducing energy efficiency. For enhanced filtration, consider upgrading to advanced air filtration systems or air purifiers.

Replacement schedule:

• Standard homes: Monthly
• Homes with pets or allergy sufferers: Every 3 weeks
• Light AC use: Can extend slightly

Central air conditioning systems in humid climates like Texas run 6 to 8 months yearly, making consistent filter replacement critical for system longevity.

Check Your Thermostat

Faulty thermostat settings force your air conditioning unit to work harder than necessary to reach the desired temperature.

How to check:

• Verify cool air flows when set to cooling mode
• Use a laser thermometer to compare vent temperature with thermostat reading
• Replace older mechanical thermostats with programmable models to improve energy efficiency
• Consider smart home automation for optimal temperature control and energy savings

Inspect Your Ductwork

Inspecting ductwork for leaks and sealing gaps can reduce energy waste by up to 30%. Look for visible tears, disconnected sections, or air escaping when the system runs.

Insulating ducts in unconditioned spaces (attics, crawl spaces) prevents cool air from warming before reaching living areas. Use spray foam or duct sealant for minor repairs. Hire a licensed HVAC professional for comprehensive ductwork repair and testing on central air conditioning systems and heat pump systems.

Keep Your System Clean

Dust buildup and debris reduce peak performance and force your air conditioning unit to work harder. Here are essential cleaning tasks:

Clean Your Outdoor Unit

Keep your outside unit free of dirt, twigs, and leaves. These obstruct your outdoor condenser unit and reduce cooling system performance.

Cleaning steps:

• Use a broom or garden hose to remove debris (be gentle with coil fins)
• Clean condenser coils
• Check indoor evaporator coil (in air handler) for dust
• Inspect refrigerant lines for leaks (oil spots or ice buildup indicate problems)
• Ensure unit is level
• Maintain clearance of at least two feet around the condenser unit for proper airflow and safe operation
• Trim nearby vegetation

Dust and Clean Your Indoor Unit

Every 3-4 months:

• Wipe access panel with a damp cloth
• Use vacuum attachment on vents and registers
• Clean accessible blower components and blower motor area to maintain cooling performance
• Consider professional air duct cleaning for improved indoor air quality

Check the Wiring

Turn off power at the service panel before inspecting. Visually check electrical components for debris, corrosion, blackened or melted wiring (indicates overheating). Do not attempt repairs—contact a professional technician.

Clean Your Drain Line and Drain Pans

Clogged drain lines cause backups and water damage.

Monthly maintenance:

• Flush condensate drain line with 1 cup white vinegar

Deeper cleaning (as needed):

• Pass wire through drain channel
• Pour 1 cup of 50/50 bleach-water solution down drain
• Use drain pan tablets from home improvement stores to prevent algae
• Clean drain pan with soap and water

Weatherize Your Home

Prevent conditioned air from escaping and reduce strain on your AC system:

• Caulk cracks and gaps around window and door frames
• Apply weatherstripping adhesive (available at home improvement stores)
• Insulate attics and basements
• Use window coverings when AC runs
• Inspect window seals on window units at the start of each cooling season
• Consider humidifiers and dehumidifiers to optimize indoor comfort and humidity levels

Optimal temperature: The US Department of Energy recommends 78°F. This setting balances comfort with reduced energy bills. Your central air conditioner won’t struggle to maintain extreme cooling when outdoor temperatures spike. During cooler months, proper weatherization helps your heating system distribute warm air efficiently.

When to Call a Professional

While regular DIY maintenance goes a long way, certain warning signs mean it’s time to call in the experts. Addressing these warning signs quickly can save you money and headaches down the line.

Call a licensed HVAC professional if you notice:

• Strange odors – May indicate mold, electrical issues, or burned-out components
• Unusual noises – Grinding, squealing, or banging sounds warrant immediate inspection
• Water leaking – Can indicate a clogged drain line, frozen evaporator coil, or refrigerant issues
• Weak airflow – May signal blower motor problems or ductwork issues
• Short cycling – AC turning on and off frequently indicates a serious problem
• Ice buildup – On refrigerant lines or coils suggests airflow or refrigerant issues

For expert diagnosis and repairs, contact our HVAC repair specialists.

Schedule Regular Servicing

A licensed HVAC professional provides comprehensive service beyond DIY maintenance. Learn more about our professional AC repair and maintenance services.

Timing and cost:

• Schedule annual maintenance in spring before peak summer demand
• Service duration: 1-2 hours
• Prevents costly repairs and extends system lifespan

What professional technicians check:

• Refrigerant levels
• Electrical components and connections
• Blower motor
• All internal components for proper specifications
• Overall peak performance and energy efficiency
• System age and replacement recommendations (learn about AC installation options)

Important: Annual routine maintenance may be required to maintain your manufacturer’s warranty. Consider our HVAC Maintenance Membership for priority service, discounts, and peace of mind.

Professional AC Maintenance Services

Regular air conditioner maintenance tasks keep your air conditioning system running efficiently and prevent breakdowns during peak season. Cold Factor’s professional 25-point inspections cover all indoor and outdoor components for optimal cooling performance and energy efficiency.

Explore our full range of HVAC services or view our current specials and promotions. Contact us to schedule service.