AC System Failed: Houston Summer Emergency Response

Immediate Safety First

Houston summers are dangerous. Heat-related illness can develop quickly, especially for children, elderly people, and pets. If temperatures are above 95°F without AC, your health is at risk.

• If you are alone, elderly, very young, or have health conditions: Go to a public space with AC (library, mall, movie theater, coffee shop) or stay with a friend or family member
• Never sleep in a house without AC during hot weather—heat stroke can occur while you sleep
• Drink water constantly—not caffeine or alcohol
• Limit physical activity and rest in the coolest room available
• Never leave children or pets in a car, even with windows down

Basic Troubleshooting (15 minutes)

Before calling for service, try these checks:

1. Check the thermostat

   • Is it set to "COOL" mode?
   • Is the temperature setting lower than the current room temperature?
   • Try adjusting the temperature down 5 degrees
   • Check that the thermostat battery isn't dead (if battery-powered)

2. Check the breaker

   • Locate your electrical panel (usually garage, utility closet, or exterior)
   • Look for a breaker labeled "AC" or "HVAC"—it may be switched to "OFF"
   • If it's off, switch it back on
   • If it immediately trips again, do not flip it again—this indicates an electrical problem

3. Check the air filter

   • Locate the return air vent (usually in a hallway, attic, or utility closet)
   • If the filter is completely clogged/black, replace it with a new one
   • A dirty filter reduces cooling efficiency significantly

4. Check the outdoor condenser unit

   • Look at the metal box outside your home
   • Is it running (fan spinning)?
   • Is it blocked by leaves, debris, or vegetation?
   • Gently clear any blockage, but do not touch the unit itself

5. Check the indoor condensate drain line

   • Look near your furnace or air handler for a PVC pipe with a small drain
   • If water is pooled around it or it's clogged, gently flush it with water
   • Many AC failures in Houston are due to humidity-related drain blockage

When It's Beyond DIY

Call a professional HVAC technician immediately if:

• The breaker keeps tripping after you reset it
• You hear grinding, squealing, or strange noises from the outdoor unit
• The outdoor unit isn't running at all
• You smell burning plastic or electrical odors
• It's above 95°F and you need to stay in your home

Houston context: During peak summer, HVAC companies are overwhelmed. If you can wait 1-2 days for a less urgent repair, do so. However, in extreme heat (100°F+), emergency service is justified—heat-related ER visits surge during these periods.

Temporary Cooling Solutions

While waiting for repair:

• Close blinds and curtains to keep out solar heat
• Use ceiling fans to circulate air (fans create the illusion of cooling)
• Take cool showers to lower body temperature
• Sleep with damp sheets and minimize bedding
• Open windows in the evening when outdoor temperature drops below indoor
• Wear light, loose clothing
• Avoid using the stove or oven—use microwave or grill instead
• Keep refrigerator/freezer doors closed to avoid heat loss

When to Call a Pro

Call a professional HVAC technician if:

• You've done the basic troubleshooting and AC still won't cool
• The system is over 15 years old (may need replacement, not just repair)
• You need service during a heat emergency (don't delay in extreme heat)
• The condensate drain is clogged (indicates potential water damage)

Critical: Never attempt to repair refrigerant issues or open sealed AC components yourself—this requires certification and can cause injury or system damage.