6 Critical Geothermal Water Heater Problems to Know About in Bellville Skip to main content
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6 Critical Geothermal Water Heater Problems to Know About in Bellville, OH

By June 17, 2024No Comments
water heater problems

Geothermal water heaters have the attention of homeowners in Bellville, OH, and across the country. These modern appliances promise efficiency, yet they come with their own set of challenges.

In this guide, we’ll highlight six common water heater problems you may face when you install a geothermal water heater. From installation errors to forgotten maintenance, we’ll cover what you need to know to keep your water heater running smoothly. 

By understanding common heater problems in Bellville, you can prevent heater malfunctions and optimize water heater function. Read on to learn how to protect your investment and maintain reliable hot water in your home.

1. Installation Gone Wrong

Incorrect installation causes geothermal heater issues. If a geothermal water heater isn’t installed correctly, it can lead to several issues. Poor installation can cause the system to work inefficiently, leading to higher energy bills and more wear and tear on the components.

Hiring a qualified professional who specializes in geothermal services is crucial. We applaud anyone willing to spend their weekends tackling home improvement projects. However, a qualified technician will ensure the correct setup.

Could anything that bad happen? Yes, it can. For example, you may have leaks if you don’t properly place the loop (underground pipes). This not only reduces the efficiency of your system but also increases the risk of expensive repairs.

Improperly sealed connections can lead to coolant leaks, causing the system to lose its ability to heat water efficiently. Incorrectly configured settings or misaligned components can result in frequent system shutdowns or inconsistent water temperatures. 

2. Neglecting Regular Maintenance

Regular maintenance is key to keeping your geothermal water heater in top condition. Without proper care, small issues can turn into big problems. Common maintenance tasks include:

  • Regular visual inspections
  • Drain and flush
  • TPR function check
  • Anode rod inspection
  • Wash the filter
  • Clean condensate lines

Neglecting maintenance on your geothermal water heater can lead to a host of issues. Reduced efficiency, increased repair costs, and potential health and safety hazards are all possible without regular maintenance. 

3. Leaks and Water Damage

Leaks are another common geothermal heater issue. They can occur in the underground pipes or within the unit itself. It’s important to address leaks as soon as possible to keep your system running efficiently and avoid costly repairs.

Signs of leaks include:

  • Damp spots around the water heater
  • Drop in system pressure
  • An unexplained increase in your water bill
  • Mold or mildew growth
  • Poor heating performance or inconsistent temperatures
  • Visible corrosion or rust on pipes and fittings 

Fixing leaks quickly can prevent structural damage to your home and ensure the longevity and efficiency of your system. Make sure to work with a contractor that understands geothermal water heater systems.

4. Incorrect Temperature Settings

Like other water heaters, geothermal units rely on a thermostat to regulate water temperature. If the settings are too high or too low, your system may not work efficiently, leading to inconsistent water temperatures and higher energy consumption.

Setting the temperature too high can cause the system to overwork. If you set the thermostat too low, the result is insufficient heating.

Adjusting the settings to the manufacturer’s recommendations can improve system performance. For optimal heating and efficiency, set your geothermal water heater’s temperature to between 120°F and 140°F (49°C to 60°C).

Energy Efficiency: 120°F (49°C) meets most household needs and reduces energy consumption.

Safety: Below 140°F (60°C) prevents scalding and bacterial growth.

This range minimizes strain on the system, extending its lifespan. Adjust within this range if needed and regularly test the thermostat to ensure efficient and safe operation.

5. Combating Corrosion and Scale

Bellville, Ohio’s water is hard to very hard, which can impact water heaters. Corrosion and scale buildup are two issues caused by water quality. These issues can cause blockages, reduce efficiency, and even lead to system failure.


Corrosion occurs when the metal components of your geothermal water heater react with water and oxygen, leading to rust and deterioration. This can weaken the system and cause leaks or component failure.

Preventive Measures

Regular inspections for signs of rust or discoloration are essential. Applying anti-corrosion treatments or coatings can help protect metal components. Additionally, using non-corrosive materials like plastic or stainless steel in parts of the system can reduce the risk of corrosion.

Scale Buildup

Scale buildup happens when minerals like calcium and magnesium separate from the water and form deposits on the interior surfaces of the system. This is more common in areas with hard water.

Consider circulating descaling agents through the system to dissolve mineral deposits. Watch for signs of scale, such as reduced water flow or increased pressure, to catch the problem early.

Of all the water heater maintenance tips you read about, being proactive about removing corrosion and scale buildup should be a priority. It’s less time-consuming and more economical than most home maintenance tasks.

6. Electrical Challenges 

Electrical challenges can disrupt the performance of your geothermal water heater. From faulty wiring to blown fuses, any issues with the electrical components can lead to a system malfunction. 

Common electrical problems include:

  • Faulty wiring
  • Blown fuses 
  • Thermostat issues

Poorly installed or damaged wiring can disrupt electrical flow within the system. Overloading, short circuits, or electrical surges can result in blown fuses. Malfunctioning thermostats can lead to inaccurate temperature control. 

It’s crucial to address electrical problems promptly to prevent further damage and safety hazards.

Signs of electrical problems include:

  • Frequent system shutdowns
  • Tripped breakers
  • Burnt or discolored wiring
  • Electrical odors
  • Sparks or arcing

A qualified technician should diagnose and repair electrical issues to ensure the safety and efficiency of your geothermal water heater. Attempting DIY repairs on electrical components can be hazardous and may void warranties.

Resolve Water Heater Problems With Cosby Heating & Cooling

Understanding and addressing common water heater problems specific to Bellville, OH is vital to getting the most out of your geothermal unit. From installation errors to electrical challenges, addressing issues ensures efficient and reliable performance.

For expert assistance in troubleshooting and geothermal system repair, partner with Cosby Heating & Cooling. With over 40 years of experience, we’re your trusted one-stop shop for all heating and cooling needs. We keep up with the latest in HVAC and geothermal technology. 

Contact us today for a free quote and let us help you maintain optimal comfort and efficiency in your home.