6 Steps Before Calling for Air Conditioning Repair

As summer temperatures rise along the Wasatch Front, a malfunctioning air conditioner can disrupt comfort for both homeowners and tenants. Before you reach for the phone to schedule a service call, take a few minutes to run through these six practical checks. By performing simple inspections and maintenance tasks, you can often resolve minor issues, prevent unnecessary service charges, and ensure your system is operating efficiently. At Salt City Plumbing, Heating & Air, we’ve seen many problems eliminated by following these straightforward steps. If you still need professional help afterward, you can rely on us for prompt, expert assistance.

1. Inspect and Replace the Air Filter

A clogged or dirty air filter is one of the most common causes of reduced airflow, higher energy bills, and even system shutdowns. When dust and debris accumulate, the blower motor works harder, and the evaporator coil can freeze up.

• Locate the filter (usually inside the return-air grill or in the blower compartment).

• Remove and hold it up to a light source. If you cannot see light through the filter—or if it looks coated with dust—replace it.

• Choose the correct replacement based on your system’s specifications (MDI or MERV rating, size).

• Slide in the new filter, ensuring the airflow arrow points toward the indoor unit.
  

We recommend replacing filters every 1–3 months, depending on household size, pets, and air quality. A clean filter improves efficiency and system longevity.

2. Verify Thermostat Settings and Functionality

Before assuming a mechanical failure, confirm that your thermostat isn’t the culprit. Simple misprogramming or a failed thermostat can make it seem as if the AC is not cooling properly.

• Set the thermostat mode to “Cool” (not “Heat” or “Off”).
  
• Adjust the temperature setting at least 5°F below room temperature.
  
• Listen for the system to kick on. If there’s no response, check for a blank display—this could indicate dead batteries or a power issue.
  
• Replace batteries if necessary, and inspect wiring if you feel comfortable. Loose wires can interrupt signals to the compressor.

Programmable thermostats should be checked for correct time and date settings since a wrong schedule can prevent cooling at expected times. If the thermostat is more than 10 years old or shows erratic behavior, consider upgrading to a newer, digital model for accurate temperature control.

3. Check the Circuit Breaker and Power Supply

Occasionally, an electrical trip can leave your outdoor condenser or indoor blower unpowered. Resetting a tripped breaker or replacing a blown fuse might restore operation without further expense.

• Locate your home’s electrical panel and identify the breaker labeled for “AC,” “Outdoor Unit,” or “Condensing Unit.”

• See if the breaker has flipped to the middle position. If so, switch it fully to the “Off” position, then back to “On.”

• Inspect any inline disconnects near the outdoor unit (a small metal box on the side of the unit). Ensure it is fully seated and switched on.

• Check for blown fuses in disconnect boxes; replace them with the exact amp rating specified by the manufacturer.

If the breaker trips again immediately after resetting, do not continue to flip it. This indicates a likely short or overheating issue. In that case, it’s time to call for a professional diagnosis to avoid electrical hazards.

4. Clear Debris and Vegetation Around the Outdoor Condenser

Your outdoor condenser needs unobstructed airflow to transfer heat effectively. Leaves, grass clippings, branches, and even landscaping growth can restrict air movement, forcing the compressor to overwork.

• Turn off the power at the disconnect switch or breaker before approaching the unit.

• Remove leaves, sticks, and other debris from the top and sides of the condenser. Use gloves and gently lift out large chunks.

• Trim back shrubs and vegetation at least 2–3 feet around the unit perimeter. This allows air to circulate freely and discourages pests from nesting.

• Use a soft brush or garden hose on a gentle setting to clean the fins. Straighten any bent fins carefully with a fin comb or even a butter knife, taking care not to damage them further.

Regularly keeping the outdoor unit clear helps maintain proper heat exchange and prevents the compressor from overheating.

5. Examine Ductwork for Visible Leaks or Obstructions

Leaky or blocked ducts can reduce cooling capacity and lead to uneven temperatures throughout your home or rental property. While a full duct inspection may require professionals, you can perform a quick visual check of inaccessible areas:

• Inspect exposed ductwork in the attic, basement, or crawl space for tears, loose connections, or missing insulation.

• Check for disconnected joints or gaps around rectangular metal ducts and round flex ducts. Seal small gaps with HVAC foil tape (not standard duct tape).
  
• Look for crushed or kinked flexible ducts that might restrict airflow. Ensure they run in smooth bends without sharp creases.

• Clear obstacles—storage boxes, debris, or rodents—from obstructing returns or supply vents.

If you find extensive damage, sagging ducts, or suspect contamination (mold or pests), schedule a professional duct sealing and cleaning to restore full system performance.

6. Review Warranty, Service Agreements, and Local Utility Rebates

Before committing to any repair or maintenance service, check your paperwork to see if the cost could be reduced or covered:

• Locate your manufacturer’s warranty; many compressors and major components carry a five- to ten-year warranty. If your system is under warranty and the failure matches covered issues, parts or labor may be free.

• Consult any existing service agreements with Salt City Plumbing, Heating & Air. Our maintenance plans often include annual tune-ups and priority service at discounted rates. If you’re already enrolled, you might save on diagnostic fees.

• Research local utility rebates offered by Rocky Mountain Power, Dominion Energy, or other providers. Installing a programmable thermostat, upgrading to a high-efficiency unit, or even completing a tune-up can qualify you for rebates that offset replacement or repair costs.

 

By combining warranty coverage, service-plan benefits, and utility incentives, you can minimize out-of-pocket expenses and maximize the value of any needed repairs.

After completing these six checks, you’ve taken important steps to troubleshoot minor issues and protect your system’s lifespan. If the air conditioner still fails to cool, cycles on and off rapidly or shows signs of mechanical trouble, it’s time to call us. At Salt City Plumbing, Heating & Air, we’re committed to providing reliable, expertly executed repairs—whether you’re in Salt Lake, Davis, or Utah County—so you can stay comfortable all season long.

Stay cool and stress-free—call Salt City Plumbing, Heating & Air for expert air conditioning repair.