Keep Your HVAC System Safe and Running Strong with Pressure Switch Replacement
When your furnace or HVAC system suddenly shuts down or refuses to start, the issue might be with the pressure switch—a critical safety component that monitors airflow and system pressure. At OHA HVAC, Plumbing, Chimney and Fireplaces, we provide expert HVAC Pressure Switch Replacement in Fredericksburg and Fairfax, VA, NOVA and surrounding areas, helping homeowners and business owners restore safe, efficient heating and cooling.
Call 703-213-5161 today to schedule your service and get your comfort system back on track!
Reliable Work for a Crucial Component
Pressure switches help prevent overheating, gas leaks, and airflow problems in HVAC systems. When they malfunction, it’s not just an inconvenience—it’s a serious safety risk. That’s why OHA HVAC, Plumbing, Chimney and Fireplaces takes every replacement seriously. Our technicians are trained to diagnose pressure switch failures accurately and install replacements that meet or exceed manufacturer standards. Whether the failure is due to age, moisture, debris, or internal shorting, we’ll ensure your new switch is properly matched and professionally installed.
Signs You May Need a New HVAC Pressure Switch
A faulty pressure switch can cause a number of system issues or stop your HVAC unit from functioning altogether. Here are the most common signs and services we provide:
- Furnace won’t start or complete a heating cycle
- System shuts off soon after startup
- Flashing error codes from the control board
- Clicking or humming sounds from the furnace
- Poor or no airflow due to airflow restriction
- Inconsistent or failed pressure readings during diagnostics
- Safe removal of defective pressure switch
- Installation of compatible, high-quality replacement
- Full system testing for safety and performance
We’ll explain what’s wrong, show you the faulty part, and provide a solution that restores comfort and peace of mind.
Schedule Your Pressure Switch Service Today
Don’t ignore warning signs from your HVAC system. Trust the experts at OHA HVAC, Plumbing, Chimney and Fireplaces for thorough, dependable HVAC Pressure Switch Replacement in Fredericksburg and Fairfax, VA, NOVA and surrounding areas. Whether you need urgent repairs or preventative maintenance, we’re ready to help.
Call 703-213-5161 today to book your appointment and get your heating or cooling system back in peak condition!
Frequently Asked Questions About HVAC Pressure Switch Replacement
What is a pressure switch in an HVAC system?
A pressure switch monitors airflow and ensures your system is venting correctly before ignition. It acts as a safety device to prevent unsafe furnace operation.
How can I tell if my pressure switch is failing?
Common signs include the furnace not starting, shutting off shortly after startup, flashing error codes, or unusual clicking or humming sounds.
Can I bypass a faulty pressure switch?
Bypassing the switch is dangerous and not recommended. It disables a key safety feature and can lead to carbon monoxide buildup or system damage.
How long does it take to replace a pressure switch?
A professional can typically replace a pressure switch in less than an hour, including diagnostics, safe removal, and system testing.
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