Clark Excavation transformed our back yard, they removed old wooden steps & large timbers in garden, installed French drain for better drainage, and redesigned steps down to patio and added a firepit with semi circled stones for seating. Job was completed in 4 days, and looks beautiful, would highly recommend Scott and his team at Clark Excavation Services. Lire plus
DBTI has built many great ECHO System finished basements over the years. All of them have depressurization versus exhaust flow rate values that exceed our minimum requirements. To my knowledge there has never been a call back. This takes quality, honest workmanship, something I know you can count on from Bill Walls every time.
Douglas S. Walkinshaw, Ph.D., P.Eng.
ECHO System inventor
ASHRAE Fellow
Founding Member of the ISIAQ Academy of Fellows
University of Alberta Alumni Honour Award Recipient
Indoor Air Technologies Inc.
VEFT Aerospace Technology Inc.
ECHO Air Inc.Lire plus
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