Why Is My Central AC & Heating System Constantly Turning On and Off?

by | Nov 18, 2021 | Articles

Is your central AC constantly switching off and powering back on without warning? You need to resolve the problem if you want a consistent temperature in your home. We cover the reasons why your central AC & heating system may be turning on and off, and why it might require HVAC service in Pooler, GA, due to fluctuating operation cycles.

Why Your Central Heating Automatically Turns Off and On

Air conditioners don’t run 24/7. When they complete the task of cooling or heating a room to a certain temperature, they turn off until the thermostat indicates that it needs to turn on again. However, you may notice your HVAC system failing to turn on or off like normal when the temperature just doesn’t seem right.

If you feel that the temperature in your home doesn’t match the thermostat settings, you need to diagnose the problem, then fix it to ensure optimal heating and efficiency.

No Power

Your HVAC system requires a significant amount of power. If you don’t have the unit plugged into an adequate outlet or have too many items plugged into one outlet, you may experience a power surge that shuts off your unit.

Ensure proper electrical support during installation. Also, verify that the unit is properly plugged in. If you experience a power surge, visit the circuit breaker and flip the proper switch.

Damaged Thermostat

Your thermostat controls the temperature settings that determine how much your air conditioner and heater run. However, sometimes, the sensors that connect the thermostat to the air conditioner become dirty or damaged and fail to communicate properly.

First, check that your thermostat didn’t change settings without your knowledge. If the temperature is set to your preferences, verify that the thermostat has power using a multimeter. If the thermostat doesn’t have power, you may need to replace it.

If you have come to the end of your thermostat’s life, you may want to consider upgrading to a smart thermostat. A smart thermostat connects to your Wi-Fi so that you can easily monitor and control settings from anywhere using an app on your smartphone. In many cases, a smart thermostat can even save you money by helping you run your HVAC system more efficiently.

Keep in mind that no matter what your thermostat says, you may experience heat pump short cycling if you don’t have the proper size unit for your home. Talk to your HVAC technician to learn the best size system for you and your family. You may want to look into new HVAC installation in Pooler, GA.

Dirty Air Filter

An air filter collects debris in the air to help improve the air quality in your home. However, when dirty, the filter can produce the opposite effects.

A dirty air filter will blow dust and other pollutants back into the air, possibly creating a safety concern. A dirty air filter also creates an obstruction, not allowing proper airflow. It can even create a problem between the thermostat and the HVAC system.

Change or clean the filter regularly as part of seasonal HVAC maintenance. Tend to the filter even more often in especially hot or cold months when you run your system more.

Refrigerant Leak

Refrigerant runs through your system to aid in the cooling process. When your system experiences a leak, it reduces the pressure levels. Many devices have a safety feature that automatically shuts off the unit when the pressure levels get too low.

It can be difficult to identify when you have a refrigerant leak. Look out for weird noises coming from your unit. You may also notice a sudden increase in humidity or ice developing around the coils.

A refrigerant leak requires professional AC repair services. Don’t attempt to do the repairs yourself.

Call for Professional HVAC Repair Services

If you run into a problem where your HVAC system seems to shut on and off at inappropriate times, contact Byrd Heating and Air Conditioning for HVAC repair services in Pooler, GA. A trained professional will come to your house to repair the problem and suggest ways to resolve it in the future. Ask your HVAC technician about seasonal maintenance services, too!

Image provided by iStock

Why Your House Smells Musty in Winter (And How Byrd Heating & Air Fixes It)

Ask Byrd. Your HVAC Authority. 40 Years Serving Savannah. Every winter, we get calls that start with the same line: “My house smells musty, but it’s winter. How is that even possible?” It’s a fair question. Most people expect musty odors in the summer when humidity is...

How to Prep Your HVAC System for Winter

Winter strains every part of your heating system. A little preparation now prevents breakdowns, inefficiency, and comfort issues later. Here’s how to get ahead before temperatures drop.

3 Furnace Sounds that are Cause for Concern

If your furnace is making unusual sounds, it’s natural to wonder whether it’s a serious issue or just part of normal operation. While every heating system makes some noise, certain furnace noises can indicate worn components, airflow problems, or mechanical failures...

The 6 Most Important Parts of Your HVAC System

Your HVAC system is made up of several key components that all work together to keep your home comfortable year-round. When one part isn’t working properly, it can affect efficiency, comfort, and even lead to unexpected repairs. Understanding the most important HVAC...

Emergency HVAC Repair and What You Need To Know

Emergency HVAC Repair in Savannah, GA - Why Choose Byrd Heating & Air When your HVAC system suddenly stops working, it can throw your entire household into chaos. In Savannah, GA, the weather can be unpredictable, hot, humid summers and chilly winter nights mean...

Sign Up For HVAC Newsletter, Rebates, and Energy Incentives

Your Name(Required)
Car Cfad Badge 4c Png

Pin It on Pinterest