A geothermal heat pump is a cost-effective heating option that also helps lower your environmental impact. This pump system is incredibly efficient and boasts of a long lifespan. However, geothermal systems aren't immune to problems, even with excellent maintenance practices.

Below are some common geothermal heat pump problems. 

System Leaks

If your geothermal heat pump leaks refrigerant or water from the underground pipes, your indoor comfort levels will decline significantly. You will also notice ice formation on your heat pump's above-ground unit. The clearest sign of a leaky heat pump is wet areas on your property, even during hot weather. 

These leaks shouldn't alarm you, and you don't have to excavate your yard to find the leak source. To identify the exact leak's location, your heating specialist will inject a special, non-toxic dye into your heat pump's pipes. After several days, you will notice stained areas to show where leaks occur in your system.

The technician will then dig down to access the damaged part and repair it. Leaks are common with old systems. So, consider a replacement if your geothermal heat pump is living on borrowed time.

Corrosion and Scale Buildup

Highly corroded heat exchange coils are a sign that you should upgrade your heating system. With excessive corrosion, the heat exchange coils can't transfer heat effectively, which ultimately lowers your heat pump's performance. Like leaks, corrosion mainly develops in old systems. So, if you see corroded parts in your system, you might need to invest in a new system.

Scale buildup also affects heat transfer in your unit. Generally, most geothermal systems utilize water to help with heat transfer. If you use highly mineralized water, a hard, crusty, and white substance (otherwise known as scale) clings to the internal components of your heat pump or the ground loop.

If left alone, scale build-up restricts smooth water flow through the ground loop. Consequently, your system's heating ability reduces. You should have a professional acid flush your system to eliminate the scale build-up so your unit can run smoothly. 

Dirty Air Filter

When was the last time you changed your heat pump's air filter? If it's been a while, your system will not work properly. Dirt and debris accumulate on the air filter over time and restrict airflow through your heat pump. As a result, the pump strains and has to work harder to keep your indoor space comfortable. Replace the dirty air filter to restore your unit's efficiency. 

If some rooms still feel chilly after you change the air filters, have a professional heating specialist check your ductwork for gaps or signs of improper installation. Poorly installed ductwork can also affect your heat pump's performance.

If you have issues with your geothermal system, reach out to a heating system professional for diagnosis and repair. However, if repair costs pile up fast, budget for a new unit as early as you can. For more information, contact a local company such as Economy Supply Co.