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Air Conditioning Repair

DIY AC Troubleshooting: When to Call the Pros

Home | Blog | Published on June 23rd, 2025

When your air conditioner stops cooling properly, the last thing you want to do is wait in a hot, uncomfortable home. Before jumping to conclusions or making costly repairs, there are a few basic things homeowners can check that might resolve the issue.

However, knowing where to draw the line is just as important. Some problems require the expertise of licensed HVAC professionals to ensure safety, protect your system, and preserve your warranty. Can you handle this problem yourself, or do you need professional AC repair in McCandless, PA? Let’s take a look.

Technician diagnosing outdoor condenser with gauges and thermometer


Step 1: Check the Circuit Breakers


If your AC system isn’t turning on at all, your first stop should be the electrical panel. A tripped circuit breaker is a common cause of power loss to your air conditioning unit, especially after a power surge or storm. Reset the breaker by flipping it off and then back on. If it trips again immediately, do not keep resetting it. This points to a deeper electrical issue that requires professional attention.


Step 2: Verify Thermostat Settings


It might seem obvious, but an incorrect thermostat setting is an easy mistake that can prevent your system from operating properly. Make sure it’s set to “Cool” and the temperature is lower than the current room temperature. Check if the batteries in a battery-powered thermostat need replacing. Sometimes, a simple refresh of the settings or battery swap can get your system back on track.


Step 3: Inspect the Air Filter


A clogged or dirty air filter can seriously impact your system’s performance by restricting airflow, causing the unit to work harder than necessary. This can even lead to the evaporator coil freezing up. Filters should be replaced monthly during peak summer usage. If you haven’t changed yours in a while, start there and see if airflow improves.

Still No Luck? Time to Call in the Pros


If you’ve gone through these simple steps and your AC is still not cooling effectively—or not turning on at all—it’s time to contact the professionals. DIY repairs beyond these basics can pose serious risks to your safety, your system, and your wallet.

Why Professional Repairs Matter

  • Safety First: Air conditioning systems involve high-voltage electricity and pressurized refrigerant—both of which can be dangerous to handle without proper training and equipment. One wrong move could result in electric shock or harmful exposure to chemicals.
  • Prevent Further Damage: Guesswork repairs can do more harm than good. What seems like a minor issue could stem from deeper problems like refrigerant leaks, failing capacitors, or compressor damage. Attempting DIY fixes can worsen the situation and lead to more expensive repairs down the road.
  • Protect Your Warranty: Most manufacturer warranties explicitly require that repairs be performed by a licensed HVAC technician. Trying to fix the system yourself could void your warranty, leaving you to pay out of pocket for future repairs or even full system replacements.
  • Get It Fixed Fast: Our experienced team can quickly diagnose the issue, provide a professional repair, and help prevent future breakdowns. We’re here to restore your comfort efficiently and safely.

If your AC is still giving you trouble after the basic checks, don’t take chances. Reach out to us today for reliable, expert service. Let our licensed professionals get your system running smoothly so you can stay cool and comfortable all summer long.

Call the friendly staff at Boehmer Heating & Cooling for exceptional customer service! Schedule AC repair in McCandless, PA with our team today.

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