1444555 Alberta Ltd.
1452727 Ont. Inc. (o/a H.h. Holdings)
154322 Canada Inc.
1546300 Ontario Limited
1564330 Ontario Inc.
1589549 Alberta Ltd.
1592834 Ontario Inc.
160630 Canada Inc.
1642798 Ontario Inc.
1662801 Ontario Inc.
167608 Canada Inc. Doing Business As: Les Systemes Thermo Plus 1
177197 Canada Ltee
1994 Weyer Family Limited Partnership