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In Arizona, your AC is responsible for 50-70% of your summer electric bill. The most common causes of a sudden spike: dirty air filter (adds 15-25% to cooling costs), low refrigerant (system runs longer to reach setpoint), failing capacitor (compressor draws more current), and an aging system (efficiency drops 5-10% per year after year 10). Bradford diagnoses same-day - $0 service call with approved repair.
Why Is My Electric Bill So High in Arizona?
Your AC is responsible for 50-70% of your summer APS/SRP bill. Bradford explains the 7 most common causes of a high electric bill in Arizona and how to fix them.
The #1 Cause: A Dirty Air Filter
A clogged air filter is the single most common cause of a high electric bill in Arizona. When airflow is restricted, your AC has to work harder and longer to cool your home. A standard 1-inch filter in Arizona should be changed every 30-45 days during summer - not every 90 days as the package suggests. Bradford recommends MERV 11 filters for optimal balance of airflow and filtration.
Low Refrigerant (You Have a Leak)
If your AC is low on refrigerant, it runs longer to reach your setpoint - dramatically increasing your bill. Signs: AC runs constantly but house never gets below 80F, ice on the refrigerant lines, or a hissing sound near the outdoor unit. Bradford finds and fixes the leak before recharging.
Failing Capacitor or Contactor
A weak capacitor causes your compressor to draw significantly more current than normal - sometimes 20-30% more. Your AC still runs, but it's working much harder than it should. Bradford replaces capacitors same-day for $196-$416 flat-rate.
Aging System Losing Efficiency
HVAC systems lose approximately 5-10% efficiency per year after year 10. A 15-year-old system that was rated 14 SEER when new may be operating at 8-10 SEER effectively. Replacing it with a Trane 17 SEER2 can cut your cooling costs by 40-50%.
APS/SRP Time-of-Use Rates
Both APS and SRP offer time-of-use plans where electricity costs 2-3x more from 3-8 PM. If you're on a time-of-use plan and running your AC at full blast during peak hours, your bill will spike. Pre-cooling before 3 PM and letting the house drift during peak hours can save $30-$80/month.
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