Sudden High Energy Bills in Spokane Valley, WA

Spokane Valley has seen a lot of construction over the past 15 to 20 years. A significant portion of the housing stock - from the Greenacres neighborhood to developments near Mirabeau Point Park - was built during that boom. Builder-grade AC equipment installed in those homes is now hitting the 15-to-20-year mark. That is the age range where efficiency drops sharply and components start to fail.

Here are the most common root causes we find behind a sudden spike in cooling costs:

Low or Leaking Refrigerant

Refrigerant is the substance that actually moves heat out of your home. When the charge is low - usually because of a slow leak somewhere in the system - the AC has to run much longer to achieve the same cooling effect.

The dirty secret is that topping off refrigerant without finding and fixing the leak is a waste of money. The refrigerant will leak out again. We find the leak first.

Dirty or Restricted Condenser Coils

The outdoor unit (condenser) releases heat from your home into the outside air. When the coils are coated in dirt, cottonwood debris, or grass clippings - common in Spokane Valley summers - heat transfer is blocked. The system runs longer trying to dump heat it cannot shed efficiently.

Failing Compressor or Capacitor

The compressor is the heart of your AC system. When it starts to fail, it draws more electrical current to do the same job. A failing run capacitor - the component that helps the compressor and fan motor start and run - causes similar inefficiency. Either issue shows up fast on your utility bill.

Clogged Air Filter or Blocked Airflow

A severely restricted filter forces the blower motor to work harder and reduces the volume of air moving across the evaporator coil. Less airflow means less heat removed per cycle, which means longer run times. This is one of the simplest causes - and one of the most commonly overlooked.

Duct Leaks

Leaky ductwork is a silent efficiency killer. Conditioned air escapes into unconditioned spaces - attics, crawlspaces, wall cavities - before it ever reaches your living areas. The system keeps running because the thermostat never sees the temperature it is trying to hit.

Aging Equipment Losing Efficiency

AC systems are rated by SEER (Seasonal Energy Efficiency Ratio - a measure of how much cooling output you get per unit of electricity). A 15-year-old system running at reduced efficiency due to wear, dirty components, or minor refrigerant loss can perform far below its original rating. The bill reflects that gap.

Before you call, run through these checks. Some causes are simple and you can confirm them yourself.

1. Check your air filter. Pull it out and hold it up to light. If you cannot see light through it, it is overdue for replacement. Replace it with the correct size and run the system again. 2. Look at the outdoor unit. Is it clear of debris? Grass, cottonwood fluff, and dirt can pack against the coils. Turn the system off at the thermostat and gently rinse the coils with a garden hose from the inside out if accessible. Do not use a pressure washer. 3. Check your thermostat settings. Confirm it is set to "cool" and "auto" (not "on," which runs the fan continuously and inflates bills). 4. Look for ice on the indoor unit or refrigerant lines. Ice on the evaporator coil or the copper lines running to the outdoor unit is a sign of restricted airflow or low refrigerant.

If you see ice on the unit, turn the system off and call us. Running a frozen system can damage the compressor.