HVAC Services Greeneville TN | Call Nolichuckey Heat & Air

That's a common issue we see, especially with aging systems. The problem is often a faulty reversing valve, which is the component that changes the flow of refrigerant to provide heating or cooling. Over time, wear, debris, or electrical failure can cause it to stick. Our technicians will diagnose the valve and your system's controls to provide a clear, honest repair recommendation to restore proper function.

It's a smart question many homeowners ask. We look for key signs: frequent repairs, rising energy bills, inconsistent temperatures, and strange noises. For an older system, a major component failure often makes replacement more cost-effective than a costly repair. We'll provide a detailed assessment of your system's condition and efficiency, comparing repair costs to the long-term savings of a new, reliable unit, so you can make an informed decision.

Our diagnostic process is thorough. First, we'll check the thermostat and electrical controls to rule out simple issues. Then, we'll test the reversing valve solenoid for proper voltage and listen for the distinctive 'click' of it engaging. Using manifold gauges, we'll check system pressures to see if the valve is physically stuck. This hands-on testing allows us to pinpoint the exact cause—whether it's an electrical fault, a mechanical failure, or a system contamination issue—and explain your repair options clearly.