Summers in Boise, Idaho, are hot and dry, sometimes exceeding 100°F. To beat the heat, you want to make sure your AC is running correctly to keep your home cool and comfortable. When the circuit board fails, it can cause issues like irregular temperature controls or even a complete system failure.
Read on to better understand the role of your AC’s circuit board, signs of it failing, and when to schedule an AC circuit board replacement with Express Plumbing Heating & Air in Idaho.
Understanding the Role of an AC Circuit Board
Think of the circuit board as the brain of your AC unit. It manages and regulates the different functions and fluctuations in the AC and keeps all the parts in sync. The circuit’s control board directs the signals to parts like the compressor, blower, and thermostat to maintain a cool temperature. The circuit board also determines how long the fan spins and how long each cooling cycle lasts.
To find your circuit control board, remove the front or side access panel and check near the blower. It’s important to use caution when accessing the control board, especially the wiring connections. If you are unsure or nervous about touching the circuit board, call a certified Express Plumbing Heating & Air technician.
Signs of a faulty AC circuit board
There are quite a few signs of a bad AC circuit board:
- Your AC unit won’t turn on or has delayed startup.
- The AC system turns off and on randomly and frequently.
- The thermostat is unresponsive or jumps between temperatures.
- There are strange noises like buzzing, clicking, or humming while the AC runs.
- Your blower motor or compressor starts to fail.
- There is a burning smell when the AC is running.
- There are flashing error codes on the AC unit.
- There is physical damage, such as loose wiring, cracks, or burnt components on your circuit board.
- Your house had an electrical surge, tripping the circuit breaker and board.
Common Causes of AC Circuit Board Failure
Any number of issues can cause an AC circuit board failure but there are a few common culprits to consider first.
Electrical surges and power fluctuations
Environmental occurrences like lightning strikes and factors like unstable voltage can fry your circuit board and cause AC electrical problems. While it is impossible to predict when these will occur, you can install a surge protector to regulate voltage levels and safeguard all sensitive AC components.
Moisture, dirt, and corrosion
Excessive moisture, dust, or debris can also cause circuit board failure. Without proper AC maintenance, including cleanings and moisture control, corrosion damages the circuit board’s electrical parts and wiring. Therefore, checking your AC frequently and looking for any signs of corrosion is vital.
Worn-out components and aging systems
Over time, parts like capacitors, relays, and fuses will degrade, and when they do, it leads to air conditioner motherboard issues. If your AC unit is older than 10 or 15 years, repairing the circuit board is not cost-effective, and a complete system replacement is necessary.
Repair vs. Replacement: What’s the Best Option?
While minor repairs can fix some circuit board issues, recurring problems or aging components will cause future headaches. An AC circuit board replacement may be a better investment.
When can a faulty circuit board be repaired?
A technician can often repair the board if the problem is only a loose wire or other minor electrical issue. If your system is under warranty, the manufacturer may cover the cost of a repair or replacement.
When should you replace the entire AC system?
If your AC unit is 10–15 years old and keeps failing, it’s time for a new system. A replacement is always the better option if the repair cost is half that of a new system. If multiple parts, like the compressor, circuit board, or blower motor, are failing, look for a replacement.
The cost of AC circuit board replacement vs. new installation
Depending on your AC unit’s make and model, the average cost to repair its circuit board is $200–$600. Depending on its size, efficiency, and capacity, a new AC unit can cost between $3000 and $8000. While this upfront cost is higher, newer systems offer improved efficiency, reducing long-term utility bills.
Benefits of Upgrading To a New AC System
Modern AC units feature advanced circuit boards that optimize their cooling performance and energy efficiency. An AC unit’s energy efficiency is measured using a scale called SEER (Seasonal Energy Efficiency Ratio) ratings. Higher SEER models provide quicker and more reliable cooling with less energy.
Smart technology & enhanced comfort
New AC units are equipped with smart thermostats, variable-speed fans, and zoning capabilities, allowing you to control the temperatures in different areas of your home. For example, if you want your second floor always to be cooler than the main floor, your AC needs zoning capabilities. Smart technology also keeps your AC unit from running continuously.
Fewer repairs & long-term reliability
Upgrading to a newer AC system reduces the likelihood of an unexpected summer breakdown. Many AC manufacturers offer extended warranties, which provide financial protection from costly repairs. Regular maintenance will also greatly improve the lifespan of your AC unit.
Choosing the Right AC Replacement for Your Home
When selecting a new AC unit for your home, you must consider three factors — the size and capacity of the unit, energy efficiency, and knowing the difference between different types of AC systems. For the first two, choose an AC unit with the correct BTU rating for your home’s square footage and choose a model with a higher SEER for better energy performance, leading to long-term savings.
When it comes to the type, the choice depends on your needs, consulting a qualified HVAC technician can help determine the best option for your home.
Call Express Plumbing Heating & Air
Proper installation is critical to the performance and lifespan of your new AC system. Look no further than Express Plumbing Heating & Air. We service Boise and other Idaho areas, like Caldwell. Our certified technicians will find the right unit for your lifestyle and install it within a day. Contact us today to take advantage of our specials, like up to $1000 off a high-efficiency AC unit.
