Welcome to the REHAU MONTANA ecosmart house Blog!

Welcome to the REHAU® MONTANA ecosmart houseTM Blog!



This residential construction and research project sponsored by REHAU incorporates energy-efficient, sustainable building products and an overall holistic design approach. A major objective of the research is to determine how the various building systems are best integrated to optimize energy consumption, comfort and life-cycle costs.

September 21, 2011

Geothermal Systems Done, Facade and Envelope Get Finishing Touches

By Bill Hoy, Project Manager

The exterior of the house is 80 percent complete with siding and the stone façade being finalized on the front elevation. The REHAU window frames and door have been installed, with glass scheduled to be installed into the frames during the week of Sept 26. The glass is fabricated with Sunlight-Responsive Thermochromic (SRT) glazing, which passively tints the glass in response to direct sunlight, helping to keep rooms comfortable and allowing occupants to enjoy views without glare or heat from the sun’s rays.



In the mechanical room, the subcontractor has completed connection of the RAUGEO geothermal loops into three separate pairs of manifolds, while installation of the two separate REHAU ECOAIR ground-to-air heating/cooling exchange system is 95 percent complete. The intake ports for two identical ECOAIR systems have been installed with separate valves and fans in order to demonstrate in the research phase how ECOAIR is best installed for optimum efficiency. One system is located within the footprint of the house and the other outside buried 7 ft below the ground.

The triangular tube gas boiler has been attached to the wall and the heat sink manifolds have been completed. Now, work is ready to begin on the installation of the 2-in. PEX distribution piping from all the manifolds and to the equipment and storage tanks.




Stay Tuned for the Research Phase
Sheetrock installation is expected to begin during the week of October 17 with final completion anticipated during the last week of December. Stayed tuned - the research phase of the project will commence once construction is complete!