It’s a classic Arizona summer—scorching heat, sun beating down, and all you want is to step into a perfectly chilled home. But what happens when your AC is running and the air just isn’t cold?
Air conditioning issues are more than just an inconvenience in Arizona—they can impact your comfort, your health, and your electricity bill. Whether you’re hearing strange noises, feeling warm air, or your AC just isn’t keeping up, it’s important to know what’s normal, what’s fixable, and when to call a professional.
In this article, we’ll break down the most common AC problems, what they typically cost to repair, how to know when it’s time to replace your unit, and what to expect from Arizona’s summer heat this month.
Arizona’s Summer Climate: What to Expect
Arizona summers are no joke. With record-breaking temperatures and extended heatwaves, air conditioning is a must—not a luxury. Knowing what kind of weather to expect can help you stay ahead of AC issues and better prepare your home.
📊 Average Temperatures in Arizona (June–August)
| City | Month | Avg High (°F) | Avg Low (°F) |
| Phoenix | June | 104°F | 78°F |
| July | 106°F | 83°F | |
| August | 104°F | 83°F | |
| Tucson | June | 101°F | 71°F |
| July | 100°F | 76°F | |
| August | 98°F | 75°F |
Source: Visit Arizona – Weather
These temperatures mean your AC is working extra hard. If your system isn’t in peak condition, it might struggle to keep your home cool—especially during peak hours (around 3–6 PM).
☀️ Summer Survival Tips for Arizona Residents
- Hydrate frequently – Even indoors, it’s easy to get dehydrated in the dry heat.
- Use ceiling fans to help circulate cool air more efficiently.
- Avoid using heat-generating appliances (like ovens) during the hottest part of the day.
- Schedule regular AC maintenance – a tune-up can prevent surprise breakdowns.
- Sign up for an energy-saving plan with your local utility provider.
🌵 Fun Summer Activities (Even When It’s 110°F Outside!)
- Indoor escapes: Check out the Heard Museum or Arizona Science Center.
- Early morning hikes: Try South Mountain or Sabino Canyon before 8 AM.
- Evening entertainment: Enjoy twilight hours at Desert Botanical Garden or an outdoor movie night.
- Cool getaways: Drive up to Flagstaff or Sedona for cooler temps and weekend adventures.
Arizona’s Summer Climate: What to Expect
Arizona summers are intense—and if you’re living in the Valley or down south in Tucson, you already know just how crucial your AC is from June through August.
☀️ Overview: Heat + Low Humidity = A Dry, Brutal Summer
Arizona is known for its dry heat, with scorching daytime highs and mild, warm nights. Unlike humid states where the air feels heavy, Arizona’s dry climate can make the heat feel more bearable—but it also means your body loses moisture faster, your indoor air can become uncomfortably dry, and your AC unit needs to work overtime to keep you cool.
🌡️ Monthly Temperature Averages
Here’s a quick breakdown of what the summer months typically look like:
📍 Phoenix, AZ
| Month | Average High | Average Low |
| June | 104°F (40°C) | 78°F (26°C) |
| July | 106°F (41°C) | 83°F (28°C) |
| August | 104°F (40°C) | 83°F (28°C) |
📍 Tucson, AZ
| Month | Average High | Average Low |
| June | 101°F (38°C) | 71°F (22°C) |
| July | 100°F (38°C) | 76°F (24°C) |
| August | 98°F (37°C) | 75°F (24°C) |
Source: Visit Arizona – Monthly Weather Guide
🛠️ Why This Matters for Your AC
These extreme temperatures put a heavy load on HVAC systems. As outside temps rise above 100°F:
- Your AC must work harder to reach and maintain your desired indoor temp.
- Any small issues—like a dirty filter or low refrigerant—can quickly become major problems.
- Systems that aren’t regularly maintained are at higher risk of failure or running inefficiently, which spikes your energy bills.
Regular maintenance and early troubleshooting are the keys to staying comfortable (and safe) all summer long in Arizona.
Why Is My AC Running But Not Cooling?
One of the most common calls we get during Arizona’s summer is this:
“My AC is on, but it’s not blowing cold air.”
If you’re experiencing this, you’re not alone—and the good news is, many of the causes are fixable.
Below are the most likely reasons your AC might be running but failing to cool your home properly:
🧼 1. Clogged or Dirty Air Filter
Your filter is the first line of defense for your HVAC system. A dirty air filter can block airflow, making it hard for your AC to circulate cool air.
What to do:
Check your filter—if it’s gray or dusty, it’s time to replace it. During summer, change it at least once a month.
❄️ 2. Low Refrigerant Levels
Refrigerant is the cooling agent that helps your AC remove heat from your home. If your system is low, it might indicate a leak.
Signs of low refrigerant:
- Weak airflow
- Ice buildup on the refrigerant line
- Warm air blowing from vents
What to do:
This isn’t a DIY fix. Call a licensed technician to inspect for leaks and recharge the system safely.
🌿 3. Dirty or Blocked Condenser Coils
Your outdoor AC unit (the condenser) releases the heat pulled from your home. If the coils are dirty or covered in debris, it can’t do its job properly.
What to do:
Turn off your unit and carefully remove leaves, dirt, or grass from around the outdoor condenser. Avoid using high-pressure water—it can damage the fins. For a deeper clean, contact a professional.
🌡️ 4. Thermostat Issues
Sometimes the issue isn’t the AC—it’s your thermostat. Incorrect settings, old batteries, or a faulty thermostat can all cause cooling issues.
What to do:
- Make sure it’s set to “Cool” mode.
- Check and replace batteries if needed.
- If it’s not responding at all, it may need replacement.
⚠️ 5. Leaky Ductwork
If cool air is leaking out before it ever reaches your vents, your AC could be cooling your attic instead of your living room.
What to do:
This issue requires a professional inspection, especially in older homes. Sealing ducts can improve airflow and reduce energy costs.
✅ Quick DIY Checklist:
Before calling a technician, try these steps:
- ✔️ Replace the air filter
- ✔️ Check the thermostat settings
- ✔️ Inspect the outdoor unit for visible debris
- ✔️ Make sure all vents are open and unblocked
Still not cooling? That’s where we come in.
Call Olive Air & Heating at (623) 280-1730 or schedule a diagnostic appointment online—we’ll pinpoint the problem and get your home comfortable again.
What Is the Most Common AC Problem?
When your air conditioner stops working during a desert heatwave, it can feel like a crisis. The good news? Most AC problems are caused by just a few common issues—and they’re usually preventable with regular maintenance.
🗣️ “Kaden was to our home right on time. He was able to diagnose the problem with our AC unit and make the fix quickly.” — Mike Petersen, March 2025
Here are the most frequent culprits we see in Arizona homes:
🧽 1. Dirty Air Filters
This is the #1 issue we come across—and fortunately, it’s the easiest one to fix.
Why it’s a problem:
Clogged filters reduce airflow, making your system work harder and less efficiently. This can cause overheating, frozen coils, and higher energy bills.
How to prevent it:
Replace your air filter every 30 days during summer—especially if you have pets or allergies.
🔋 2. Thermostat Malfunctions
Sometimes the issue is as simple as a faulty or outdated thermostat. If your thermostat isn’t reading the correct indoor temperature, your system might turn on and off at the wrong times—or not at all.
Signs to watch for:
- The room feels warmer or cooler than the thermostat reads
- The system short-cycles (frequent starting and stopping)
- No response when adjusting the settings
Pro Tip: Consider upgrading to a programmable or smart thermostat to help manage energy use and indoor comfort more efficiently.
⚡ 3. Electrical Failures (Capacitors or Contactors)
Your AC relies on electrical components to start and run the motors. When a capacitor or contactor wears out, the system may fail to turn on—or it might hum without actually cooling.
What it sounds like:
- A clicking or buzzing sound from the outdoor unit
- The fan is running, but the compressor isn’t
- The system randomly shuts off
When to call a pro:
These are not safe DIY repairs—capacitors hold an electrical charge even when the power is off. A certified technician from Olive Air & Heating can test and replace these parts safely.
🧰 Regular Maintenance Prevents Most Issues
The truth is: most of the problems above are completely avoidable with seasonal maintenance.
A quick AC tune-up can help:
- Catch worn parts before they fail
- Clean coils and drainage lines
- Check refrigerant levels
- Ensure your system is operating efficiently
Think of it like an oil change for your car—only way more important when it’s 110°F outside.
📞 Need a checkup before summer gets hotter?
Call Olive Air & Heating and schedule your seasonal maintenance today!
What Is the Most Common AC Repair?
Looking for fast help? Schedule AC repair here
Not all AC issues require major parts or costly replacements. In fact, most service calls we handle at Olive Air & Heating involve common repairs that can be resolved quickly—often on the same day.
Here are the most frequent AC repairs, what causes them, and what homeowners can expect in terms of cost:
🧯 1. Capacitor or Contactor Replacement
These small electrical components help start and run the motors in your AC. Over time, they can wear out—especially in extreme Arizona heat.
Signs of a bad capacitor or contactor:
- Clicking or humming noises
- AC turns on and off frequently
- Warm air blowing despite system being on
💲 Estimated Repair Cost:
Typically ranges from $100 to $400, depending on your system type and parts needed.
❄️ 2. Refrigerant Recharge
If your system is low on refrigerant, it could be due to a leak—which not only affects cooling but also increases energy usage.
Signs of low refrigerant:
- Ice buildup on refrigerant lines
- AC runs constantly but doesn’t cool
- Hissing or bubbling sounds
💲 Estimated Cost:
$200 to $600, including leak detection and recharge.
🧠 3. Thermostat Replacement
Sometimes, the issue isn’t with your AC system at all—it’s the thermostat.
Common symptoms:
- AC won’t turn on or off correctly
- Inaccurate room temperature reading
- System short cycles or runs nonstop
💲 Cost Range:
$150 to $500 depending on whether you opt for a basic digital model or a smart thermostat (like Nest or Ecobee).
🧰 Bonus: AC Tune-Up & Diagnostics with Olive Air & Heating
Sometimes the best repair is prevention. With the Arizona summer in full swing, now is the time to schedule a professional tune-up or service call.
| Service | Price | Description |
| A/C Service Call | $59.00 | A technician comes to your home to diagnose the AC problem. |
| A/C Tune-Up | $75.00 | Full system inspection and maintenance to prevent breakdowns. |
💡 All pricing shown is from Olive Air & Heating’s current service menu. Prices are upfront and transparent—no surprise fees.
Need fast service or a seasonal checkup?
📞 Call us today at (623) 280-1730 or schedule online to get your home back to cool comfort.
What’s the Most Expensive Part to Replace on an AC Unit?
When it comes to residential air conditioning repairs, not all components are created equal. Some parts—like filters and capacitors—are relatively inexpensive. But if your technician says you need a new compressor, it’s time to pause and do the math.
⚙️ The Compressor: The Heart of Your AC System
Your AC’s compressor is essentially the engine of the cooling cycle. It pressurizes the refrigerant and circulates it through the system to pull heat out of your home.
When the compressor fails, your AC won’t cool at all—even if the fans are running.
💸 How Much Does Compressor Replacement Cost?
Replacing a residential AC compressor is one of the most expensive repairs a homeowner can face.
| Compressor Replacement | Estimated Cost |
| Standard Split-System AC | $1,500 – $2,500+ |
| High-Efficiency Units | $2,500 – $3,500+ |
Cost Factors:
- Type and size of your system
- Whether your unit is still under warranty
- Labor costs
- Brand/model availability
⚠️ If your AC unit is 10+ years old and the compressor fails, it’s often more cost-effective to replace the entire system than to put that money into a single part.
🔍 Signs Your Compressor Might Be Failing
- AC runs but doesn’t cool
- Clicking, rattling, or humming sounds from the outdoor unit
- System frequently trips the breaker
- AC struggles to start or shuts off unexpectedly
🤔 Repair or Replace the Whole System?
If your compressor is out and your unit is aging, here’s why a full replacement might make sense:
- New units are far more energy-efficient
- Lower monthly bills can offset the upfront cost
- You’ll get a brand-new warranty, peace of mind, and improved comfort
- No more worrying about old parts failing one by one
🛠️ Let’s Make It Simple
At Olive Air & Heating, we don’t just replace parts—we help you make informed, long-term decisions.
If you’ve been quoted for a compressor replacement, we’ll walk you through:
- A side-by-side cost comparison
- How much life your current system has left
- Whether the repair is covered under a manufacturer warranty
📞 Call (623) 280-1730 to schedule a diagnostic, or ask us about second opinions if you’ve received a high quote elsewhere.
How Can I Fix My AC By Myself? (And When to Call a Pro)
🗣️ “Javier was very professional and helpful, explained clearly the maintenance of today and future steps.” — Silvia Garcia, March 2025
When your AC isn’t cooling properly, you might be tempted to jump into “fix-it” mode. While there are a few things you can safely do on your own, it’s important to know where DIY ends and professional service begins—especially in Arizona’s extreme heat.
Here’s your guide to basic troubleshooting and home care before picking up the phone.
🧰 Safe DIY Fixes You Can Try First
✅ 1. Replace or Clean Your Air Filter
- A clogged filter restricts airflow and can cause your system to overheat or freeze.
- Filters should be checked monthly during summer and replaced every 30–60 days.
✅ 2. Check Your Thermostat Settings
- Make sure your thermostat is set to “Cool” and the temperature is lower than the current room temp.
- Try replacing the batteries or gently dusting the inside.
✅ 3. Inspect the Outdoor Unit
- Clear away leaves, weeds, or debris around your condenser.
- Gently hose down the unit to remove dust and dirt (avoid pressure washers).
✅ 4. Check Your Vents
- Make sure all vents are open and unobstructed by furniture or rugs.
- Close unused room doors to help direct airflow where you need it most.
⚠️ What You Should Not Try on Your Own
Some AC problems require tools, training, and safety precautions. Here’s what you should leave to the pros:
❌ Handling Refrigerant or Recharging the System
- Refrigerants can be dangerous and require EPA certification to handle.
❌ Opening Electrical Panels or Testing Capacitors
- Even when turned off, some AC components hold residual charge that can cause injury.
❌ Diagnosing Internal Failures (like compressors, motors, or leaks)
- These often require specialized tools, gauges, and training.
🧑🔧 When to Call Olive Air & Heating
If you’ve tried the basics and your AC still isn’t cooling—or you’re seeing signs of something more serious—don’t risk it.
🚨 Call us if you notice:
- Warm air blowing from vents
- Constant running with little cooling
- Strange noises (clicking, buzzing, rattling)
- Ice on refrigerant lines
- Sudden shutdowns or breaker trips
Our $59 service call includes a full system diagnostic and expert recommendations. We’ll explain everything clearly and offer straightforward pricing—no surprises.
📞 Ready to get cool again?
Call (623) 280-1730 or schedule your visit online with Olive Air & Heating.
Stay Cool, Arizona – We’ve Got You Covered
When your AC stops working in the middle of summer, it’s more than just inconvenient—it’s a comfort crisis.
The good news? Whether it’s a clogged filter, a thermostat glitch, or something more serious like a failing compressor, most issues can be diagnosed quickly and fixed affordably when caught early.
Here’s a quick recap:
- Not cooling? Check your filter, thermostat, and outdoor unit before calling.
- Most common issues include dirty filters, faulty capacitors, and refrigerant leaks.
- Major repairs like compressor replacements may signal it’s time to replace the unit.
- Use the $5,000 Rule to help decide between repair and replacement.
- If you’re unsure, Olive Air & Heating offers affordable service calls and expert insight to help you make the best choice for your home.
⭐ Why Homeowners Trust Olive Air & Heating
With over 500 five-star Google reviews, our customers consistently highlight our timeliness, professionalism, and results. But don’t just take our word for it—here’s what your neighbors are saying:
🗣️ “Kaden Neiderman arrived on time and provided excellent service during the A/C tune-up. He was thorough in his work.”
— Anwesha Neogy, March 2025
🗣️ “Kaden was to our home right on time. He was able to diagnose the problem with our AC unit and make the fix quickly.”
— Mike Petersen, March 2025
🗣️ “They were easy to work with, showed up on time, and resolved the issue with my AC. Will use again.”
— Jason Lines, March 2025
🗣️ “Javier arrived on time and kept my wife updated about any issues.”
— Ed Van Winkle, March 2025
🗣️ “Javier was very professional and helpful, explained clearly the maintenance of today and future steps.”
— Silvia Garcia, March 2025
🗣️ “Javier was a true professional, in and out services with a smile!”
— Cristian Ruelas, March 2025
🛠️ Our Current Service Pricing
| Service | Price | What’s Included |
| A/C Service Call | $59.00 | On-site diagnosis by a licensed HVAC professional |
| A/C Tune-Up | $75.00 | Full system inspection, cleaning, and performance check |
💬 We believe in transparent pricing, honest service, and helping Arizona homeowners stay cool all year long.
Need AC help in the East Valley? Visit our Gilbert AC Repair page or call us at (623) 280-1730 to schedule a service.
If your AC is acting up—or you just want peace of mind before the next heatwave—Olive Air & Heating is ready to help.
✅ Quick service calls
✅ Friendly, professional technicians
✅ No-pressure advice and clear recommendations
✅ Serving homeowners across the Valley
👉 Call us now at (623) 280-1730 or book your service online and enjoy the comfort you deserve.
