Geothermal Repair

Troubleshooting a Geothermal System When It’s Not Working

Not sure what’s going wrong? If your geothermal heat pump isn’t keeping your home comfortable, here are a few things you can check on your own before giving us a call:

• Check the Thermostat: Make sure it’s set to the right mode (heat or cool) and the temperature is correct.
• Inspect the Air Filter: A clogged filter can restrict airflow and make your system work harder.
• Look for Tripped Breakers: Sometimes, a power surge can trip the circuit for your geothermal unit.

If you feel comfortable, these basic checks might help you identify the issue. But if nothing stands out—or if you’ve tried these steps and the problem persists—it’s time to call in a geothermal HVAC repair specialist. Trying to troubleshoot complex systems yourself could lead to more damage or even a voided warranty. Let Thiele take it from here.

What’s Wrong With My Geothermal System? Common Geothermal Repairs

There’s no single cause for geothermal issues, and that’s why it’s important to have a professional diagnose the problem. Here are some of the most common geothermal repair issues we see in Central Indiana:

Rooms Aren’t Staying Warm or Cool Like They Used To

If your home isn’t holding temperature evenly, there could be a problem with the underground loop system. Damage, leaks, or reduced pressure can interfere with heat transfer. Our team pressure-tests the loop and, if needed, reseals or replaces the affected sections to restore balance and efficiency.

The System Runs Constantly But Still Feels Off

When your geothermal unit runs more than usual but your comfort suffers, the issue may be with the heat pump itself. That could mean failing components, low refrigerant, or worn sensors. We’ll run diagnostics on the heat pump to locate the weak spot and handle repairs quickly.

You Hear New Noises or Notice Odd Vibrations

Unfamiliar buzzing, grinding, or humming could point to a failing circulator pump. That part moves water through the loop system and helps maintain steady temperatures. We’ll inspect the pump, check voltage, and replace it if it’s not up to the job.

Airflow Feels Weak or the System Shuts Down Suddenly

Restricted airflow or frozen coils are common when filters are dirty, refrigerant levels are off, or there’s a problem with the blower. We’ll clean your coils, inspect refrigerant flow, and fix any airflow blockages to get things moving again.

Your Thermostat Settings Aren’t Matching Reality

If you’re constantly adjusting the temperature or your home feels way off, it could be a thermostat or control board problem. These components are the brain of your system. We’ll recalibrate or replace faulty controls to bring accuracy and comfort back.

Cooling or Heating Seems to Cut In and Out Abruptly

This often points to compressor trouble. Whether it’s short-cycling or failing to turn on at all, the compressor is crucial to proper heating and cooling. We’ll evaluate whether a part can be repaired or if replacement is the better solution long-term.

Whether you’re dealing with a small calibration issue or a major loop repair, we’ve seen it all. The best-case scenario? A minor setting fix or clogged filter. The worst? Total system failure—but even then, we’ve got your back. Big or small, Thiele handles geothermal repairs in Indianapolis and the surrounding area with care and proven experience.

How Long Do Geothermal Repairs Take?

It’s completely normal to worry about how long a geothermal repair might take—especially when you don’t have heating or cooling at all. You might be wondering if the fix will be quick or if it could lead to a bigger issue, like a full replacement. While we won’t know for sure until we take a look, here’s what you can generally expect from the geothermal repair process:

Initial Diagnostic Visit

We start by inspecting your system, asking about what you’ve noticed, and running a full diagnostic. In many cases, we can identify the issue in a single visit and give you clear next steps.

Testing and Troubleshooting

If the problem goes beyond the basics, we’ll test specific parts—like pump performance, loop pressure, or the control board. This helps us avoid unnecessary repairs and get straight to the real issue.

Completing the Repair

If we have the parts needed—and we normally do—we’ll go ahead and fix it on the spot. If something needs to be ordered, we’ll keep the timeline tight and return promptly to finish the work without dragging things out.

Replacement Planning (If Needed)

If your system has a major failure, like a damaged loop or failing compressor, we’ll walk you through your geothermal replacement options. We can get to work quickly and offer financing to make the process more manageable.

Whether your issue happens during normal business hours or catches you off guard outside of them, Thiele Heating & Air Conditioning is ready to help with emergency geothermal repairs when you need us most.

Lower Your Repair Risk by Joining Our HVAC Maintenance Plan

Like any heating and cooling system, geothermal heat pumps need periodic maintenance to perform at their best. Thiele offers individual tune-up appointments as well as a full maintenance plan that takes the guesswork out of system care.

Our geothermal maintenance services include checking loop pressure, testing pump operation, inspecting electrical systems, and cleaning essential components. When you join our Annual Rewards Service Agreement, you also get:

• Two seasonal visits per year
• 15% off parts and repairs
• Priority service if something goes wrong

Want to keep your system running at its best? Ask your technician about our plan, or give us a call to learn more or enroll today.

Schedule Your Geothermal Repair in Indianapolis and Surrounding Communities

You chose a geothermal system for energy savings, quiet comfort, and long-term reliability—but if it’s not working like it should, those benefits disappear fast. When performance drops or costs creep up, it’s time to restore your system with help from a team that knows geothermal inside and out.

Thiele Heating & Air Conditioning has served Central Indiana since 1883. We’ve helped thousands of homeowners install, maintain, and repair their geothermal HVAC systems—and we’re ready to help you, too.

Call now or schedule your geothermal repair in Indianapolis, Carmel, Greenwood, Avon, Speedway, Zionsville, and more today. We’ll get your home back to normal in no time!