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Johnson Waste Management Head Office and Service Bays

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General Contractor – Ernst Hansch Construction

Mechanical Engineer – BP Designs

Architect – David Goyer

Project Details:

This building is designed as a flagship building for Johnson Waste Management. The offices are heated and cooled with geothermal water to air systems, and the workshop and wash bay are heated with natural gas unit heaters and a high efficiency has boiler for the floor.

Design Challenge:

This mechanical system was originally designed as 100% geothermal for the office and shop. However, initial testing showed that there was not enough well water volume on site to support a full geothermal system.  System design was altered to have conventional in the shop and geo in the office. Wells were abandoned completely, and a horizontal push was done for the office.

Interesting Note:

The client upgraded the overhead doors in the service area to fully retract to the ceiling. This greatly reduced the amount of wall space available to use for exhaust ductwork. Steel beams throughout the structure surrounding the doors further restricted the area available for exhaust. Southern Comfort Mechanical designed a solution to be able to exhaust the same volume of air with a much smaller wall penetration than originally required.

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