Owning a geothermal system means you have a highly efficient, unique piece of equipment. When you notice a problem like pressure loss or reduced performance, you need a technician who understands the entire system, from the indoor unit to the underground loop field.
When you call for geothermal service, the process is different from a standard furnace or air conditioner repair. We focus on diagnosing the complete system, which includes the heat pump, the flow center, and the buried ground loop. Precision Heating & Cooling has provided service for these complex systems in West Michigan since 1994.
A thorough diagnosis is the first and most important step in any geothermal service call. Unlike conventional HVAC, a geothermal system has major components both inside and outside your home, with the outdoor portion being buried underground. This requires a systematic approach to pinpoint the exact cause of the problem.
We combine specialized tools with a deep understanding of how these systems operate.
When a technician arrives, the process begins with a conversation. You can provide valuable information that helps guide the diagnosis. We will ask about the specific symptoms you have noticed, such as:
We will also ask about the system’s history, including when it was installed and its past service records. This information provides a baseline and can often point us in the right direction before we even touch the equipment.
Next, we conduct a detailed inspection of the indoor heat pump. This unit is the heart of your geothermal system. We check all the standard components you would find in a heat pump, such as the compressor, fan motor, and refrigerant levels.
We also examine parts that are specific to a geothermal setup. This includes the coaxial heat exchanger, control boards with their unique fault codes, and the connections to the ground loop. We ensure all electrical connections are secure and that sensors are reading correctly.
The ground loop is what makes your system geothermal. Problems here often manifest as "low pressure" or "low flow" faults. We connect pressure gauges to your system’s flow center, which is the component that houses the circulator pumps and valves for the ground loop.
This test tells us if the loop is holding pressure as it should. If it is not, it indicates a potential leak somewhere in the underground piping. We also check the performance of the circulator pumps to ensure they are moving the fluid through the loop at the correct rate.
The underground loop field is the most durable part of your geothermal system, but it can still experience problems. Leaks and flow restrictions are the most common issues we encounter. Addressing them requires specialized knowledge and equipment.
Because the loop is buried, finding and fixing a problem is not always straightforward. Our process is designed to be as efficient and non-invasive as possible. We focus on confirming the problem first, then isolating its location.
Your ground loop is a closed system filled with a water and antifreeze solution that should remain at a stable pressure. If you have a pressure drop, it almost always means there is a leak. The first step is to confirm the pressure loss with our gauges.
Once confirmed, we can perform a pressure test to determine the severity of the leak. A slow drop in pressure over several hours points to a small leak, while a rapid drop indicates a more significant issue. This helps us decide the best course of action for finding the source.
Finding a leak in hundreds of feet of buried pipe can be a challenge. We start by inspecting all visible connections at the flow center and where the pipes enter your home, as these are common failure points.
If the leak is in the underground portion of the loop, specialized methods may be required to isolate the general area. Repairing the pipe often involves excavating a small section to access the damaged pipe, cutting it out, and fusing a new piece in its place. Afterward, the system is flushed, refilled, and re-pressurized.
While the ground loop gets a lot of attention, the indoor unit is just as critical. This cabinet contains the compressor, air handler, and heat exchanger that do the work of moving heat between your home and the earth. Many service calls are related to these internal components.
A technician from Precision Heating & Cooling will treat this unit with the same care as any high-efficiency heat pump. We have worked on geothermal systems across Comstock Park and Kent County since 1994.
The service process involves checking refrigerant charge, cleaning the air coil, and testing all electrical components. We also listen for unusual sounds from the compressor, which can indicate internal wear. We believe in honest pricing and will provide you with clear, no-pressure options for any needed repairs.
The fluid in your ground loop is the lifeblood of your geothermal system. It is responsible for absorbing heat from the ground in winter and rejecting it in summer. If the fluid level is low, the concentration is wrong, or it is not circulating properly, your system cannot work efficiently.
Part of any service or maintenance visit involves checking this fluid. We look at the pressure and flow rate at the flow center. We also draw a small sample of the fluid to test the antifreeze concentration, ensuring it provides adequate protection.
Our maintenance plan is an excellent way to keep your system in top shape.
Geothermal heat pumps are built to last, but like any mechanical equipment, they eventually wear out. If your system requires frequent or major repairs, it may be time to consider a replacement. We can help you weigh the costs of repair against the benefits of a new unit.
Newer geothermal heat pumps offer higher efficiencies and improved features compared to older models. As a locally owned business run by Scott Johnson, we prioritize providing honest advice to our neighbors. We will give you a clear assessment of your current system’s health and performance.
If you choose to replace your equipment, we will ensure the new unit is correctly sized for your home and properly connected to your existing ground loop. Most products include a 10-year parts warranty and a 1-year labor warranty. Financing may be available through Michigan Saves to help with the investment. Precision Htg & Clg Inc holds Michigan Mechanical Contractor licence #7111083.
When your geothermal system needs attention, trust a local professional who understands its unique complexities. We are here to provide reliable service and quality workmanship for your home in Comstock Park and the surrounding area. Call (616) 784-2350.
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