Geothermal systems provide both heating and cooling.
If you have a forced-air geothermal system using a water-to-air geothermal heat pump, simply change your thermostats from heating to cooling mode, and you are done. Forced-air geothermal systems are the easiest to change from heating to cooling mode.
Cooling with Hydronic Geothermal Heat Pumps
If you have a radiant heating system, your hydronic geothermal heat pump provides cooling via high-velocity or low-velocity air handlers.
Step 1: Locate your Hydronic Control Panel
If you have a hydronic system, the first step is to locate your hyrdonic control panel in the mechanical room. You control panel will look like this:
Step 2: Determine if you have 1 or 2 Tekmar Controls
The device that tells your heat pump to make either hot or cold water is a Tekmar 152 two stage setpoint control. Your control panel will either have one or two Tekmar controls.