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Servicing the Central Missouri Area

Most Experienced WaterFurnace
Geothermal Dealer in the Midwest

Rehagen services any type or brand of Heating & Cooling equipment.


Interested in replacing your current HVAC equipment or building a new home, Rehagen Heating & Cooling, Inc. is proud to offer FREE ESTIMATES. Simply call us today at 573-455-2394 or by using this form

We install any type of heating & cooling system from a simple change out to a complex new construction installation. We will ensure you get the maximum efficiency from your system. 

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> Financing Options:
Whether you are looking to install Ground Source Heat Pump, a Conventional Heating and Cooling system or Ductless Mini Split system, we will customize an HVAC system that will fit your home and your budget.
Ask our estimators about our financing options on our conventional HVAC system installations. 
C lick here to apply.

> Warranty:
A 10 Years Warranty on parts and 1-year labor is standard with most Trane, WaterFurnace and Daikin Units upon product registration. These are factory warranties, not from a 3rd party. Ask our estimators for more information on warranty for the system you are interested in.
> Available Rebates:
Rebates are available through most Electric Companies, our estimators will be able to assist you in Finding what rebates are available to you.  
> Free Estimates
Rehagen offers FREE Estimates to all customers. If you are considering the replacement your current system or building a new house, our estimators will work with you to customize an hvac system that work best for you and your home.

Installing Ground Source Heat Pumps

How it Works

No matter what climate you live in, the temperature throughout the year varies. For some climates that means blazing summers that cool to frigid winters. What many people don't realize is that the temperature below ground (regardless of climate or  season) stays fairly consistent all year. 

The ground is able to maintain a higher rate of temperature consistency because it absorbs 47% of the suns energy (heat) as it hits the Earth's surface. WaterFurnace geothermal systems are able to tap into this free energy with an earth loop. This technology is then used to provide your home or office with central heating and cooling.


During the heating cycle, a WaterFurnace geothermal system uses the earth loop to extract heat from the ground. As the system pulls heat from the loop it distributes it through a conventional duct system as warm air. The same heat energy can also be used for a radiant floor system or domestic hot water heating. 


In the cooling mode, a WaterFurnace geothermal system air conditions your home by reversing the heating process. Instead of extracting heat from the ground, it is extracted from your home and either moved back into the earth loop, or used to preheat the water in your hot water tank. Once the heat is removed from the air, it is distributed through the duct system in your home. 

  1. Horizontal Loops
    Horizontal Loops
    Often used when adequate land surface is available. Depending on geothermal system needs and space available, pipes are placed in trenches that range in length from 100 to 400 feet.
  2. Pond (Lake) Loops
    Pond (Lake) Loops
    Very economical to install when a large body of water is available for use by the geothermal heating and cooling system. Coils of pipe are simply placed on the bottom of the pond or lake to capture the geothermal energy.
  3. Open loops (Well-Water Systems)
    Open loops (Well-Water Systems)
    In ideal conditions, an open-loop application can be the most economical type of geothermal system. These use groundwater from a well as a direct energy source.
  4. Vertical Loops
    Vertical Loops
    This is the typical loop installation done in the Central MO Area due to the rocky nature of our ground. It is also the ideal choice for a geothermal heat pump when available land surface is limited. Well drilling equipment is used to bore small-diameter holes from 100 to 400 feet deep.