Why Is My Electric Bill So High From My AC?
Quick Answer
If your electric bill has increased significantly during summer, your air conditioner may be running inefficiently due to dirty components, low refrigerant, duct leakage, aging equipment, or thermostat issues. Oklahoma’s extreme summer heat also increases system workload.
Understanding the cause can help reduce energy costs.
Common Reasons Your AC Is Raising Your Electric Bill
1️⃣ Dirty Air Filter
Restricted airflow forces your system to work harder and run longer.
2️⃣ Low Refrigerant
Low refrigerant levels reduce cooling efficiency and increase run time.
3️⃣ Aging HVAC System
Older systems often lose efficiency over time, even if they still cool the home.
4️⃣ Leaky Ductwork
Air escaping through attic duct leaks increases energy usage.
5️⃣ Thermostat Problems
Incorrect calibration or poor placement can cause excessive system cycling.
6️⃣ Dirty Coils
When coils are coated with dirt, heat transfer becomes less efficient.
What You Can Check First
Before scheduling service, you can:
✔ Replace your air filter
✔ Check thermostat settings
✔ Inspect visible duct connections
✔ Make sure vents are open and unobstructed
If high bills persist, professional inspection is recommended.
Oklahoma Climate Impact
Oklahoma summers regularly push air conditioning systems to their limits. Long periods of high heat and humidity increase system run time and energy consumption.
Proper maintenance and system efficiency are especially important in central Oklahoma.
Repair or Replace?
If your AC system is over 12–15 years old and energy bills are rising each year, it may be time to evaluate replacement options.
Improve Efficiency With Maintenance
Routine HVAC maintenance improves airflow, refrigerant performance, and overall system efficiency.
When to Call for AC Repair
Contact a technician if:
- The system runs constantly
- Cooling performance has declined
- Ice forms on refrigerant lines
- The outdoor unit sounds strained
Serving Central Oklahoma
Hartzell’s Heat & Air is based in Kingfisher County and provides AC diagnostics and repair throughout central Oklahoma within a 60-mile radius, including Oklahoma City and surrounding communities.
Frequently Asked Questions
Why did my electric bill double this summer?
Extreme temperatures, system inefficiency, and aging equipment are common contributors.
Will a new HVAC system lower my energy bill?
High-efficiency systems can significantly reduce operating costs compared to older equipment.
How often should AC systems be serviced?
Most systems should be inspected annually before peak cooling season.
Frequently Asked Questions
Why is my AC causing high electric bills in Oklahoma?
Common causes: a refrigerant leak forcing the compressor to work harder, dirty condenser or evaporator coils, an aging system losing efficiency, or a system that’s oversized or undersized. A system over 15 years old can use 20–40% more electricity than a new high-efficiency unit.
What’s the most energy-efficient HVAC option for Oklahoma?
Heat pumps are 2–3x more efficient than gas furnaces for heating. Geothermal heat pumps are the most efficient of all — COP of 3.5–5 — and qualify for Oklahoma utility rebates up to $2,000/ton through programs like CKenergy and OG&E.
How do I know if my HVAC needs replacing vs. repairing?
Use the 50% rule: if the repair cost exceeds 50% of a new system’s cost, or if the system is over 15 years old with declining efficiency, replacement usually makes more financial sense. Hartzell’s gives honest repair-or-replace advice. Call 405-375-4822 for a free estimate.
Ready to Schedule?
Call 405-375-4822 or book online. Same-day appointments often available. Free estimates on new systems.
Nearby Communities We Serve
Related HVAC Help
- AC Not Cooling Properly
- HVAC Replacement Options
- HVAC Maintenance
- AC Repair Services
- Contact Hartzell’s Heat & Air
Schedule an AC Efficiency Evaluation
If your electric bill is unusually high, contact Hartzell’s Heat & Air for professional system evaluation and recommendations.
