Heating and Air Conditioning | Greeneville | Heating and Air Conditioning in Greeneville

When Your AC Freezes and Shuts Down: A Greeneville Homeowner’s Story

Last month, a veteran living in a Greeneville mobile home discovered their indoor air handler had iced over. After thawing it out, the system still refused to kick on. Concerned about another scorching Tennessee summer without reliable cooling, the homeowner called HEP for help.

In just a few hours, our HEP technician assessed the situation, removed the old, frozen unit, and installed a properly sized 3.5-ton air handler. By the end of the day, cool air was flowing again—right on schedule.

The Problem: A Frozen Air Handler

When an air handler freezes, it often means restricted airflow or a malfunction in the indoor unit. In this case:

• Ice buildup had stopped the fan from running.
• The homeowner was left without cool air, even though the outdoor unit was intact.
• Early intervention was crucial to prevent further damage.

Why Professional Inspections Matter

Leaving a frozen system unaddressed can lead to:

• Reduced efficiency, raising your power bill.
• Compressor damage in the outdoor unit if refrigerant lines are blocked.
• Increased repair costs over time.

Tip: Schedule seasonal check-ups to spot minor issues—like dirty filters or low refrigerant—before they become big problems.

Installing Your New Air Handler

Our HEP technician removed the old unit and prepared the closet opening for the larger replacement. The new air handler was carefully positioned on the supply duct and sealed to prevent air leaks.

Freshly installed air handler in a utility closet. Notice the neatly insulated copper lines.

Ensuring Proper Fit and Finishing

Because the new unit was taller and wider, some drywall cutting and framing adjustments were needed. Once the fit was perfect, our technician built and sealed a custom plenum riser, ensuring airtight connections.

The air handler sits snugly in its new opening, ready for final connections.

Sealing, Leveling, and Testing

After rebending refrigerant lines and reconnecting electrical and drain connections, the system was leveled and secured with hold-down brackets. A professional vacuum and pressure test guaranteed there were no leaks.

Unit properly leveled and sealed before adding refrigerant.

Final Touches and System Startup

Once the refrigerant charge was adjusted to manufacturer specifications, the HEP technician powered up the system. Smooth airflow and correct temperature readings confirmed a successful installation.

After installation, the area awaits final drywall and paint work for a finished look.

Homeowner Tips for Longer System Life

• Change filters regularly. A clean filter keeps airflow steady and prevents ice buildup.
• Keep the area clear. Trim grass or move debris at the outdoor unit for proper ventilation.
• Watch for warning signs. Strange noises, weak airflow, or higher bills often mean it’s time for service.
• Invest in seasonal maintenance. Professional tune-ups catch small issues before they escalate.

Thanks to timely action, our Greeneville homeowner is enjoying cool comfort again. If your system shows signs of strain—or you simply want a seasonal check on your [Heating and Air Conditioning in Greeneville]—reach out to schedule a visit from a skilled HEP technician.

Published on October 29, 2025