Low or No Airflow in Mead, WA

Here are the most common causes we diagnose:

1. Severely Clogged Air Filter A dirty filter is the most common cause - and the easiest fix. When a filter gets packed with dust and debris, it chokes off the air supply to the whole system. Airflow drops, the coil gets cold, and ice can form within hours.

2. Frozen Evaporator Coil If airflow has been restricted for any reason - dirty filter, blocked return vent, low refrigerant - the evaporator coil can freeze solid. A frozen coil blocks airflow completely. The system runs, but nothing moves.

3. Failing or Failed Blower Motor The blower motor is what actually pushes air through your duct system. As motors age, bearings wear out, capacitors weaken, and the motor starts drawing more power while delivering less airflow. Eventually it stops altogether.

4. Weak or Failed Run Capacitor The capacitor gives the blower motor the electrical kick it needs to start and run at full speed. A weak capacitor causes the motor to run sluggishly - you get some airflow, but not nearly enough. Capacitors are a common failure point in older equipment and in units that run hard through Eastern Washington summers.

5. Blocked or Collapsed Ductwork Flex duct - the flexible, corrugated duct used in most residential systems - can sag, kink, or partially collapse over time. A single kinked section can cut airflow to an entire zone of your home. This is especially common in attic runs where duct supports fail or insulation shifts.

6. Dirty Evaporator Coil Even without freezing, a coil coated in dust and debris acts like a wall. Air can't pass through it efficiently. This is a slow-developing problem that gets worse every season without maintenance.

7. Closed or Blocked Supply Registers Simple, but worth checking: furniture pushed against vents, closed dampers, or debris blocking registers can create what feels like a whole-system airflow problem.

Before you call, run through these checks. They take five minutes and could save you a service call - or at minimum give you useful information when we arrive.

• Check your air filter. Pull it out and hold it up to light. If you can't see light through it, it's overdue for replacement. Replace it with a clean filter before running the system again.
• Check every supply and return vent. Make sure none are blocked by furniture, rugs, or closed dampers. Return vents (the larger grilles that pull air in) are especially important - blocking them starves the whole system.
• Look at your indoor unit. If you see ice on the refrigerant lines or on the unit itself, turn the system off and switch the fan to "ON" (not "AUTO") at the thermostat. This lets the coil thaw without running the compressor. Do not run the AC on a frozen coil.
• Listen to the air handler. Can you hear the blower running? A blower that hums but doesn't spin, or doesn't run at all, points to a motor or capacitor issue.
• Check your circuit breaker. A tripped breaker on the air handler can cut power to the blower while leaving the outdoor unit running.

If you've replaced the filter, cleared the vents, and the problem persists - or if you see ice - it's time to call.