Why Is My AC Freezing Up in Tri-Cities, WA?

If your air conditioner is freezing up—forming ice on the coils or refrigerant lines—you’re not alone. Many homeowners in the Tri-Cities (Kennewick, Pasco, Richland) experience this common HVAC problem, and it can quickly impact cooling performance, efficiency, and comfort.

While a few quick checks may help in the short term, most causes of AC freezing require professional HVAC service. Here’s what to look for, how to troubleshoot safely, and when to call Jacobs and Rhodes, your trusted local HVAC experts.

Step 1: Check Your Air Filter

One of the most common reasons for a frozen AC unit is a dirty or clogged air filter. Restricted airflow traps cold air inside the system, causing the coils to ice over.

What to Do:

  • Turn off your system
  • Replace or clean your air filter
  • Switch to “Fan” mode to help thaw the ice
  • If you have a heat pump, briefly switch to “Heat” mode to speed thawing (but don’t forget to switch back)

If your AC freezes again after changing the filter, the issue likely runs deeper.

Low Refrigerant: A Serious Red Flag

Low refrigerant is one of the leading causes of AC freezing—and it’s not something you can fix on your own. Low refrigerant usually means there’s a leak.

Common causes of refrigerant leaks:

  • Weak solder joints
  • Vibration damage from contact with other surfaces
  • Loose fittings or open service valves

If you suspect a refrigerant issue, turn off your system immediately and call Jacobs and Rhodes. Depending on your unit’s age and the leak’s location, we’ll help you decide whether a repair or a replacement is the smarter long-term investment.

Dirty Evaporator Coil

Over time, dust and debris collect on your evaporator coil. This reduces airflow and efficiency—often unnoticed until your AC freezes or cooling performance drops.

Signs of a dirty evaporator coil:

  • Reduced airflow from vents
  • Uneven cooling across rooms
  • Ice buildup on the indoor unit

This repair requires professional cleaning with specialized HVAC tools. Our technicians at Jacobs and Rhodes handle this safely and effectively so your system runs like new.

Blower Motor or Relay Problems

Your AC blower motor is responsible for keeping air moving. If it fails—or runs intermittently—airflow stops, and the coils freeze.

Warning signs:

  • AC turns on, but no air blows from vents
  • Motor runs inconsistently or shuts off mid-cycle
  • Clicking sounds without airflow

If you notice these symptoms, call Jacobs and Rhodes. We’ll inspect your blower motor, relay, and electrical components, replacing any failing parts to restore reliable cooling.

Don’t Ignore a Freezing AC

Running your AC while frozen isn’t just inconvenient—it can cause major damage to your compressor, reduce energy efficiency, and shorten your system’s lifespan.

Here’s what to do if your AC freezes up:

  • Start with a clean air filter and use “Fan” mode to thaw
  • Don’t run your AC while it’s iced over
  • Call Jacobs and Rhodes for professional HVAC repair

Call Jacobs and Rhodes—Tri-Cities HVAC Experts

If your air conditioner is freezing up, don’t wait for the problem to get worse. At Jacobs and Rhodes, we specialize in diagnosing and fixing AC issues quickly—keeping your home cool, efficient, and comfortable.

Call us today or schedule service online for fast, reliable AC repair in the Tri-Cities.

We’ll get your system back on track so you can stay comfortable all summer long.