If your AC is struggling during this 110°+ Surprise weather, you’re not alone. Homeowners all over Phoenix are feeling the effects. As the temperature rises, your AC works harder than ever. But how much heat is too much?
The Science: Why ACs Struggle in Extreme Heat
Air conditioners are engineered with limits.
Most systems are designed to cool homes efficiently at temperatures up to about 95°F. Once outdoor temps rise above that, especially in places like Surprise, AZ, your AC is struggling to maintain indoor comfort.
Here’s why:
1. Overloaded Heat Exchange
Your AC cools your home by pulling heat from inside and releasing it outside.
But in 110°+ Surprise weather, the outside air is too hot to absorb the indoor heat. That means the condenser unit can’t do its job efficiently.
The hotter it is, the harder it becomes for the system to exchange heat. That’s where the struggle begins.
2. Longer Cooling Cycles
Normally, your AC runs in cycles. But during extreme heat, those cycles get longer.
Instead of turning off and on efficiently, the system stays on much longer, trying to reach the thermostat setting. This constant operation puts stress on the compressor and drives up energy use.
3. Low Refrigerant Pressure
As the outside temperature increases, refrigerant pressure drops. This reduces your AC’s ability to cool effectively.
When refrigerant pressure is too low, warm air blows out of the vents. That’s another common reason your AC is struggling in Surprise.
4. Insufficient Insulation and Duct Loss
In Surprise and Phoenix homes, poor insulation and leaky ducts make things worse.
Cool air escapes. Hot air creeps in. Your AC works harder to compensate. And the cycle of inefficiency continues.
Signs Your AC Is Struggling
If you’re unsure whether your system is just “working hard” or “on the edge,” here are some clear signs:
- AC is running constantly, but the temps stay high
- Warm air from vents, even when the AC is on
- Unusually high energy bills
- Ice buildup on the outdoor unit
- Strange noises or burning smells
- The system frequently resets or shuts off
Don’t ignore these signs. Ignoring them could lead to system failure, especially during the hottest days.
Local Heat Makes It Worse in Phoenix & Surprise
The Phoenix area, including Surprise, doesn’t just get hot—it gets scorching.
During monsoon season, the added humidity creates even more pressure. High humidity makes it harder for sweat to evaporate and for ACs to cool the air. Your home feels warmer, even if the temperature is lower.
If your AC is struggling in Surprise now, imagine what could happen if we hit 115°F.
How to Help Your AC During Extreme Weather
The good news? You don’t need a new system (yet). Here are actionable steps you can take to help your system fight the heat.
1. Change Your Air Filter Regularly
This simple step can make or break your system’s performance.
A clogged filter restricts airflow. It causes the system to overwork, especially during Surprise’s heat waves. Replace it every 30 days in the summer.
2. Clean the Outdoor Condenser
Remove leaves, dust, and debris from your outside unit.
Surprise weather kicks up dust. If your unit is dirty, it can’t release heat efficiently. Rinse it gently with a garden hose. Turn off the power before cleaning.
3. Shade the Condenser
If possible, plant shrubs or install a screen to block direct sunlight.
A shaded condenser runs more efficiently. Just don’t block the airflow. Leave at least 2 feet of space around it.
4. Check the Thermostat Settings
Avoid setting your thermostat too low.
Keep it around 78°F when you’re home. Setting it lower won’t cool your home faster—it just overworks your unit.
Smart thermostats can also help regulate usage and reduce unnecessary strain.
5. Seal Windows and Doors
Use weather stripping or caulk to seal air leaks.
You don’t want to lose cool air to the outdoors. Insulation matters, even in Arizona. The better sealed your home is, the better your AC performs.
6. Use Ceiling Fans
Fans don’t cool rooms, but they circulate cool air.
That airflow helps your body feel cooler, so you can set the thermostat slightly higher.
7. Get a Professional Tune-Up
Annual maintenance is critical, especially before and during summer.
Mi Amigo Heating & Cooling offers seasonal AC inspections throughout Phoenix and Surprise. We check refrigerant levels, test pressures, inspect coils, and make sure your system is ready to take the heat.
When to Consider Repair or Replacement
Even the best maintenance won’t save an AC that’s on its last legs.
Here are some red flags that it might be time to call in the pros:
- The system is over 12 years old
- Frequent repairs are stacking up
- Inconsistent cooling across rooms
- Your AC uses R-22 (which is phased out)
At Mi Amigo Heating & Cooling, we’ll always recommend repair before replacement if it’s cost-effective. But when repairs cost more than 50% of a new unit, replacement may be smarter long-term.
Be Proactive, Not Reactive
Don’t wait for your system to crash in the middle of a heatwave.
Surprise weather isn’t forgiving. Heatwaves are becoming more intense and frequent. Your AC needs help to handle it.
With regular maintenance and professional support, you can extend your system’s life and enjoy cool, consistent air even during the hottest Phoenix summers.
Schedule a Check-Up Today with Mi Amigo Heating & Cooling
We’re a trusted local HVAC company serving Surprise, Phoenix, and surrounding cities. Our certified technicians know what desert heat does to cooling systems.
We offer:
- Preventative maintenance plans
- Same-day emergency repairs
- Honest advice on repair vs. replacement
- Energy-efficient upgrades
- Friendly, local service with no pressure
Make sure your AC isn’t struggling this summer; schedule it now.
Noticing Your AC Is Struggling
If your AC is struggling in Surprise weather, now you know why. The science, the symptoms, and the solutions are all clear.
Don’t let your cooling system suffer in silence, partner with a team that understands desert heat.
Stay cool, safe, and comfortable.
Mi Amigo Heating & Cooling has your back through every summer.
