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High Electric Bills from AC
in Tulsa, OK
Running an AC in Tulsa from late May through September is not cheap, but there is a difference between normal summer bills and bills that are higher than your neighbors with similar-sized homes. An AC that has not been serviced, has dirty coils, or is losing refrigerant works much harder to move the same amount of heat. Older systems — especially those from the late 1990s — are far less efficient than current equipment, and that gap shows up on your PSO bill every month.
Quick Answer
High electric bills from AC in Tulsa usually mean the system is working harder than it should because of dirty coils, poor insulation, or an aging unit losing efficiency. Tulsa summers push systems hard for four to five months straight, and an inefficient system can cost a lot more to run than a properly maintained one. Call (539) 666-6545 to get the system checked before another full summer goes by.
Telltale Signs
Warning Signs to Watch For
- Your PSO electric bill is noticeably higher than the same month last year
- The AC runs most of the day without keeping up with the thermostat setting
- Rooms far from the air handler are warmer than rooms near it
- The outdoor unit runs constantly even in the evening when it has cooled down
- The system is more than 15 years old and has not been serviced recently
Root Causes
What Causes High Electric Bills from AC?
Dirty Coils Reducing Efficiency
Both the indoor evaporator coil and the outdoor condenser coil need clean surfaces to transfer heat efficiently. Tulsa's spring cottonwood season, followed by months of dusty south winds, loads up the outdoor coil fast. A coil that is even partially blocked can cut efficiency by 20 to 30 percent, which shows up directly on the electric bill.
The Fix
Full Coil Cleaning Service
A tech cleans both coils — the indoor coil with foam cleaner and the outdoor coil with low-pressure water. Most homeowners only think about the outdoor unit, but a dirty indoor coil is just as common in Tulsa homes that skip annual service.
Old Low-Efficiency Equipment
Systems installed in the late 1990s and early 2000s were built to much lower efficiency standards than what is sold today. An older system might have a SEER rating — that is the efficiency score — of 8 or 10, while a new system starts at 14. Running an old low-efficiency unit through a Tulsa summer that regularly sees 100-degree days costs significantly more than running a modern system.
The Fix
System Efficiency Evaluation and Replacement
A tech checks the current system's age, condition, and efficiency rating and compares it to what a newer system would use. Replacement is not always the answer, but for a system over 15 years old that needs frequent repairs, it usually is.
Duct Leaks Wasting Cooled Air
Ducts running through attics in Tulsa can reach 130 degrees or more in summer. If those ducts have gaps at joints or connections — common in homes built before 1990 that still have original flex duct — cooled air leaks into the attic instead of reaching the rooms. The system has to run longer to compensate, and the bill goes up.
The Fix
Duct Sealing and Insulation
A tech uses a duct pressure test to find leaks, seals gaps with mastic compound or foil tape, and checks insulation levels on attic ductwork. Sealing the ducts often makes a bigger difference on the bill than replacing the AC unit itself.
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 | Dirty Coils Reducing Efficiency | Old Low-Efficiency Equipment | Duct Leaks Wasting Cooled Air |
|---|---|---|---|
| Outdoor unit coated in dirt or cottonwood fluff | |||
| System is over 15 years old | |||
| Attic gets extremely hot and ducts feel warm to the touch | |||
| Rooms near air handler are cool but far rooms are warm | |||
| Bill spiked this year but system age and use are the same | |||
| System needs refrigerant or repairs every season |
Free Inspection
Get a Diagnosis in Tulsa
An on-site inspection is the only way to confirm which cause applies to your property. Free, no obligation.
(539) 666-6545Free on-site inspection
Written estimate before work starts
Serving Tulsa & surrounding areas
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