They are the best value for many reasons;
A closed loop system does not need to rely on a steady supply of good quality groundwater.
Closed systems will function in any kind of geological formation, therefore hitting water when drilling is not vital, or even desired. This removes a lot of the uncertainty, and potential expense, when drilling. We can always quote you a firm fixed price for the drilling and entire system.
Our systems are exactly engineered from the building’s heat loads, and the depth of the well and style of heat exchanger are exactly computer modeled.
In addition, once a system is installed, it gets filled with a clean supply of water/antifreeze that will recirculate for years, with no contamination from silt, sand or minerals that you could get from a well-based system. This results in less scaling and contamination in the heat pumps and far greater reliability.
Furthermore, with a closed system, the circulator pumps can be significantly smaller, typically 1/6 HP, rather than the 1.5 to 3 HP constant pressure well pumps required with water well systems. This reduces the initial investment, and the energy consumption of the system.
The circulator pumps, also called “Flowcenters” are located in the basement or mechanical room, and are easily serviced. Open well water system pumps are large, and are located many hundreds of feet down the well. They require a steady supply of groundwater, and when they fail, service is expensive, and the home is usually without domestic water and heat. Not a recipe for domestic bliss!