HVAC Repair Knoxville TN | Call All Hours Heat and Air

Yes, that's a common sign of a stuck or failed reversing valve, a frequent issue in Knoxville. This valve is crucial for switching your heat pump between heating and cooling modes. Our technicians are experts at diagnosing this problem. We can often repair the valve, but if a replacement is needed, we use quality parts and get your system back to efficiently heating your home as quickly as possible.

Signs include little to no airflow from your vents, strange grinding or humming noises from the indoor unit, or your system shutting off unexpectedly. While it may not always be an immediate safety hazard, a failing fan stops your HVAC system from working entirely, leaving you without heating or cooling. We treat these as urgent repairs to prevent further damage and restore your comfort, offering 24/7 emergency service for Knoxville homeowners.

We live and work here too, so we understand the urgency. For emergency calls—like no heat on a cold night or a complete system failure—we prioritize getting a technician to your Knoxville home as fast as possible, often within the same day or even a few hours. Our 'All Hours' name means we're here for you when other shops are closed, day or night, to solve your pressing HVAC problems.