Thermal Direct






How It Works



Key Insights



Total Cost of Ownership






Thermal Direct combines ground source heat pumps (and solar PV arrays where appropriate), proprietary industrial controls, and project funding into a single integrated solution.  Once in place, the Thermal Direct system provides continuous BTUs (not electricity) for heating, cooling, and hot water.

The benefits include:

•  A lower cost of energy

•  Electricity usage reduced 65%

•  Natural gas/propane use reduced by 95%

•  Carbon emissions lowered by 65%

•  Reduced maintenance and support costs

•  Future HVAC-related capital expenditures eliminated

•  Significant reduction of fresh water consumption for evaporative cooling

We finance the project, assemble a consortium of delivery partners to execute the design build, then typically own and operate the installation on the client’s behalf. In exchange, the client agrees to purchase the energy from us for 20-years.

The business model provides a path in which clients derive all the benefits of renewable / energy conservation technology and more, for little to no upfront cost.



Thermal Direct is a demand reduction platform that incorporates ground source heat pumps (GSHP) as a core technology.   GSHPs leverage the stable temperature of the earth as the source for heating in the winter and the heat sink for cooling in the summer.

Regular heating and cooling systems function by expending a lot of energy to raise or lower the temperature of (typically) outside air —with furnaces in the winter and chillers in the summer—to maintain an optimal climate controlled environment.  GSHPs use the constant sub-surface temperature of the earth to perform the same function.

At any given time of the year, the ground temperature 6 meters (20 feet) below the surface remains a constant 12º to 18º C (55º to 65º F).








System Components

A GSHP system consists of 2 primary components:  a series of pipes, often called the ground loop; and a series of heat pumps, which are somewhat analogous to air conditioning units. High efficiency design offers up to 16.5 EER at full-load and up to 21.3 EER at part-load, exceeding ASHRAE 90.1 minimum efficiency requirements.

The photo below shows a bank of three 70 ton ClimaCool heat pump modules totaling 210 tons capacity.  The 85 ton module is configurable up to 1000 tons per bank.


The loops typically consist of 1” HDPE pipe buried in an area near the installation site; the loops are connected to ground source heat pumps, which are installed in the building.

Depending on time of year, circulating an inert liquid (90% water/10% propylene glycol) through the closed loop produces heating or cooling.  The loop acts like a radiator in the summer months, removing heat from the installed space and dissipating it in the ground. In the winter months, the cycle is reversed; the system removes the relative warmth of the earth and, using a standard heat exchanger within each heat pump, raises the temperature further to a comfortable indoor level.

We use GSHPs (and solar photo voltaic arrays where applicable) in our installations because the technology is proven, reliable, and hyper-efficient.

For additional information, please see the References.