Have you ever heard your HVAC system click on and off over and over again, even when your home already feels comfortable? That might not be your imagination. It could be your HVAC system “ghost running,” or what pros call short cycling.
But what does that really mean for your comfort, energy bill, or the health of your system? Let’s break it down.
What Is Short Cycling?
Short cycling happens when your HVAC system turns on and off too frequently, without finishing a full heating or cooling cycle. Instead of running steadily until your home reaches the desired temperature, the system shuts off early and then starts again shortly after.
Why Does This Happen?
There are several reasons why your system might be short-cycling:
1. Dirty Air Filter
A clogged filter blocks airflow, which can cause your system to overheat and shut off early. Replacing it regularly can often fix the problem.
2. Frozen Evaporator Coils
If your evaporator coils freeze up, usually because of restricted airflow or low refrigerant, your system might shut down to protect itself.
3. Electrical Issues
Loose wiring, a faulty capacitor, or malfunctioning parts can disrupt the system’s operation and cause it to start and stop unexpectedly.
4. Wrong Size System
If your HVAC system is too big or too small for your home, it will struggle to operate efficiently. An oversized unit may cool your home too quickly and shut off, while an undersized one may keep running without ever reaching the desired temperature.
5. Thermostat Problems
If your thermostat is in a bad spot, like near a window or heat source, it might misread the temperature and cause your system to cycle unnecessarily.
Why Is Short Cycling a Problem?
Besides the noise and annoyance, short cycling can cause real damage. It puts extra stress on the components, especially the compressor, and increases your energy use. That means higher bills, uneven heating or cooling, and even the risk of a breakdown.
What Can You Do About It?
Start simple. Check and replace your air filter. Make sure your vents are open and unblocked. If you’re still hearing frequent cycles, call a professional to check for frozen coils, electrical issues, or refrigerant leaks.
Let’s Get That Ghost Out of Your HVAC
Short cycling isn’t just annoying, it’s a sign that something’s not right. If your HVAC is ghost-running, reach out to Moore Home Services. We’ll find the cause, fix the issue, and get your system running the way it should.
