Blog

Understanding What Maintenance Your Geothermal System Needs

Geothermal systems have been in use since the 1940s, but their popularity has increased significantly over the last 20 years. These underground systems use a series of pipes that move heat from your home to the ground and vice versa, depending on the season. Homeowners appreciate these systems for their efficiency, low operating costs, and quiet operation.

These underground heating systems work by circulating fluid through a series of buried pipes. An indoor heat pump transfers heat between the underground loops to the system’s air distribution system. Not only are they good for your wallet, but they are also better for the environment. However, before considering one of these systems, it’s essential to understand the maintenance they need and how they compare to other systems.

How Geothermal Systems Differ From Traditional Systems

Typical air-sourced heat pumps and furnaces offer easy access to their components, making maintenance fairly straightforward. HVAC maintenance for these systems involves changing the filters regularly and seeking professional inspections and care.

On the other hand, geothermal systems have parts buried underground. Geothermal heat pump systems feature an underground piping system made of high-density polyethylene. Installation involves burying the pipe system horizontally in shallow trenches or deeper when installed vertically in the ground.

An indoor circulator pump moves antifreeze or water through the series of pipes. There are also fittings and connectors. The integrity of these parts can be tested without exposing the pipes.

Routine Maintenance Tasks for Geothermal Systems

Owning a geothermal system doesn’t mean maintenance-free operation. While these systems typically last much longer than traditional HVAC systems, they still need professional attention to keep them efficient. Regular service ensures that both the indoor and underground components continue performing at their best.

Annual System Inspection and Tune-Up

Schedule a professional maintenance visit annually. Our technicians will inspect the system controls, electrical wiring, safety devices, and pressure levels to ensure optimal performance.

They inspect the pumps, fans, and compressors for signs of wear and tear. Annual service also includes verifying the refrigerant charge and ensuring the water flow and temperature level stay within the proper range. This detailed inspection helps prevent minor problems from becoming expensive breakdowns.

Air Filter Cleaning or Replacement

Geothermal systems use air handlers that move air throughout the home. Just like a standard furnace or heat pump, these units can only work efficiently with clean filters. A dirty filter restricts airflow, forcing the blower motor to work harder.

You should check your filters monthly and replace or clean them every one to three months. If you live in a dusty area or have pets, you may need to replace the filters more often.

Heat Exchanger and Condensate Drain Cleaning

The indoor coil and heat exchanger transfer heat between the air and the refrigerant. When dust or mineral deposits collect on these surfaces, the efficiency level drops.

During routine maintenance, our technicians will clean the coil, inspect it for corrosion, and make sure the condensate line drains properly. A clogged drain can lead to water damage and indoor humidity problems. Keeping these parts clean helps your system deliver even temperatures throughout the home.

Loop Field and Antifreeze Check

One of the unique features of geothermal systems is their underground loop fields. In a closed-loop design, pipes carry water or antifreeze solution through the soil to exchange heat with the ground. Although the loop field can last decades, it still needs non-invasive maintenance. During maintenance, our technicians check the fluid pressure and mixture to ensure they remain free of contaminants.

For open-loop systems that use groundwater, maintenance includes testing for mineral buildup or scaling that can prevent fluid flow. These checks ensure long-term performance without the cost and annoyance of system excavation.

System Controls and Thermostat Testing

Modern geothermal systems use smart thermostats and advanced control panels. Over time, professionals need to check the thermostat and control board to ensure accuracy and proper communication with the pumps and valves. Even minor adjustments to the thermostat and control board can prevent uneven heating and lead to increased efficiency.

Circulator Pump and Flow Rate Inspection

Circulator pumps are an essential part of geothermal systems. The heat transfer process cannot happen without them.

Our professionals inspect the pump for any vibrations, unusual noises from the bearings, or issues with the flow rate. When the pump begins to fail, it can lead to temperature imbalances and increased energy consumption. Early detection helps keep replacement costs low and prevents system downtime.

Ductwork and Airflow Verification

Even the best geothermal unit will not perform well with a leaky ductwork system. Our technicians perform airflow tests during maintenance appointments. We verify that the ducts are properly sealed and sized correctly.

We inspect the registers and grilles for blockages. Proper airflow protects your comfort and reduces the stress on the system.

Routine maintenance may seem easy, but it plays a critical role in keeping a geothermal system effective and efficient. Most tasks only require a few hours of attention annually, and our professionals can handle them all.

The Dangers of Neglecting Maintenance

Like any HVAC system, a geothermal setup requires regular maintenance. While skipping maintenance may seem like a good idea to save money, it can end up costing you more in the long run. Even the system’s durable parts can experience problems without care.

The first signs often show up in efficiency. If your filters and coils are dirty, heat transfer can quickly decline. Your system will have to work harder to maintain temperature, leading to greater wear and tear. You’ll see higher electricity costs.

Even minor issues, such as scale in the heat exchanger or loop, can reduce efficiency by as much as 20% to 30%. Additionally, ignoring annual maintenance can reduce your system’s lifespan, leading to a costly replacement.

Staying on top of maintenance helps protect your investment. A simple yearly inspection from our professionals keeps your geothermal system efficient, reliable, and worry-free for many years to come.

Trust Hoff Heating & AC With Your Geothermal Maintenance

Geothermal systems are one of the smartest ways to heat and cool a home, but they only stay efficient with proper care. Routine maintenance lowers your energy costs and prevents annoying and expensive breakdowns that degrade your system’s lifespan.

Hoff Heating & AC has spent years helping homeowners in O’Fallon maintain dependable comfort. Our technicians are knowledgeable about geothermal systems because they install and maintain them on a regular basis. We check every detail of your system, including the buried loop system.

Our team also handles other heating and cooling needs, including heat pump repair and maintenance. When you choose our team, you get professionals who value your time and respect your home. We take great pride in the quality of our work. It’s why we have so many repeat customers.

Contact Hoff Heating & AC today to schedule geothermal system maintenance in O’Fallon and the surrounding areas. Experience the difference that expert service can make!