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High Electric Bills from AC
in Chandler, AZ
APS bills in Chandler can run very high from June through September because the AC barely stops running. When the system is working efficiently, that bill is expected. When the system has a problem, the bill climbs even higher for the same level of comfort. Most homeowners in newer Chandler subdivisions notice this when a bill comes in 40 or 50 dollars higher than the same month last year without any change in habits.
Quick Answer
A sudden rise in your electric bill during Chandler summers almost always means the AC is working harder than it should. Dirty filters, low refrigerant, a failing capacitor, or duct leaks are the most common reasons. A technician can run a diagnostic to find where the system is losing efficiency. The longer an inefficient system runs, the higher the bills climb, so calling (928) 599-7684 sooner saves money over the season.
Telltale Signs
Warning Signs to Watch For
- Your electric bill is noticeably higher than the same month last year
- The AC runs almost constantly without ever reaching the set temperature
- The system short-cycles, meaning it turns on and off every few minutes
- Airflow from the vents feels weaker than it used to
- Some rooms are comfortable while others stay stuffy and warm
Root Causes
What Causes High Electric Bills from AC?
Clogged Air Filter Restricting Airflow
A dirty filter forces the blower motor to work harder to pull air through, which draws more electricity. In Chandler, dust storms deposit extra particles that clog filters faster than the recommended 30-day replacement schedule. A filter that should be changed monthly can become fully blocked in two weeks after a bad haboob.
The Fix
Filter Replacement and Airflow Check
A technician replaces the filter and checks static pressure in the duct system to confirm airflow has returned to normal. They can also recommend the right filter type so the motor is not overworked.
Leaking Duct System
Ducts carry cold air from the air handler to every room. In many Chandler homes built before 2000, the ducts run through attics where summer temperatures hit 150°F or more. Connections between duct sections loosen over time from heat expansion and contraction, and conditioned air leaks into the attic instead of reaching the rooms.
The Fix
Duct Sealing and Pressure Testing
A technician pressurizes the duct system and finds the leaks using a blower door test or smoke tool. Leaks get sealed with mastic or foil tape designed for HVAC, not standard duct tape, which fails quickly in attic heat.
Aging or Failing Compressor
The compressor is the heart of the cooling system and it draws the most electricity of any component. As it ages, it loses efficiency and has to run longer to move the same amount of refrigerant. Units that are 15 years or older, common in the older parts of Chandler near the downtown area, often have compressors that are pulling far more amps than they should.
The Fix
Compressor Efficiency Testing and Replacement
A technician measures the compressor's amp draw and compares it to the rated spec. If it is drawing significantly more power than it should, replacement of the compressor or the entire outdoor unit is the practical solution.
Self-Diagnosis
Which Cause Applies to You?
Check the signs you're observing to narrow down the likely root cause before your inspection.
| What You're Seeing | Clogged Air Filter Restricting Airflow | Leaking Duct System | Aging or Failing Compressor |
|---|---|---|---|
| Weak airflow from every vent in the house | |||
| Some rooms cold, others warm with no clear pattern | |||
| Bill is high but comfort level has also dropped | |||
| Filter completely gray and matted after less than 30 days | |||
| You can feel cool air when you put your hand near an attic access panel | |||
| System is over 12 years old and bills keep climbing each summer |
Free Inspection
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