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High Electric Bills From AC
in McKinney, TX
McKinney summers are long and hot, and running the AC from May through September is just part of living here. But when the bill jumps noticeably from one year to the next, the AC is working harder than it should. A system running at full capacity for longer than it needs to is usually dirty, low on refrigerant, or has a part that's starting to fail.
Quick Answer
A sudden jump in your electric bill during summer almost always means your AC is running longer than it should to cool the house. In McKinney, where summer bills can shock even long-time homeowners, the usual causes are a dirty system, refrigerant loss, or a failing part that makes the unit work harder. Getting the system tuned up usually brings the runtime down. Call (361) 317-6400 to have a tech check it.
Telltale Signs
Warning Signs to Watch For
- Your electric bill is noticeably higher than the same month last year
- The AC runs almost constantly even during the cooler parts of the day
- The house takes much longer than usual to reach the temperature you set
- The outdoor unit is hot to the touch on the top and sides even after running a while
- You notice the system short-cycling, turning on and off every few minutes
Root Causes
What Causes High Electric Bills From AC?
Dirty Condenser Coil
The condenser coil on the outdoor unit releases the heat it pulled from inside your home. When it's coated in dirt, cottonwood seeds, or grass clippings, heat can't escape properly and the compressor runs at higher pressure longer than normal. In McKinney, cottonwood trees drop heavy seed fluff in spring that packs into condenser coils quickly.
The Fix
Condenser Coil Cleaning
A tech rinses and cleans the coil fins to remove the buildup. A clean coil lets the system reject heat efficiently so the compressor doesn't have to work as hard or run as long.
Aging or Failing Compressor
The compressor is the heart of the AC system and it draws the most electricity. As it ages, it becomes less efficient and draws more power to do the same job. Systems in McKinney that are more than 12 years old often have compressors running well below their original efficiency rating.
The Fix
Compressor Testing and Replacement or System Replacement
A tech checks the compressor's amp draw and efficiency. A compressor that's pulling too many amps and underperforming usually means the system itself is near the end of its useful life.
Refrigerant Loss Over Time
A system that's slowly leaked refrigerant over several seasons loses cooling capacity a little at a time, so the change in your bill can be gradual and easy to miss. By the time McKinney homeowners notice the bill climbing, the system may be significantly undercharged and working much harder than it should.
The Fix
Leak Detection and Refrigerant Recharge
A tech locates and repairs the leak and brings the refrigerant back to the correct charge. The system will run shorter cycles and pull less power once it's operating at the right refrigerant level.
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 Condenser Coil | Aging or Failing Compressor | Refrigerant Loss Over Time |
|---|---|---|---|
| Outdoor unit is visibly clogged with debris or cottonwood fluff | |||
| System is 12 or more years old and bill has crept up each year | |||
| Bill jumped in one month and cooling got noticeably worse | |||
| AC runs all day and barely keeps up | |||
| Compressor makes a labored sound on startup | |||
| House cools fine at night but struggles in afternoon heat |
Free Inspection
Get a Diagnosis in McKinney
An on-site inspection is the only way to confirm which cause applies to your property. Free, no obligation.
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Serving McKinney & surrounding areas
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