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At Housedepot, we have a team of technicians which have different trade certifications. so when we go to a job site, we know all the codes from gas, refrigeration , electricals and all related control boards. I myself, mark, got another degree from BCIT, for vancouver, and electrical degree from the best university from england. so we have good understanding of all sort of control systems, as well as gas heating systems.
god bless you and thank you very much for your kind review