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Attestation: It is highly recommended that you ask the licensed and trained professional to sign an attestation form that the installation has been completed according to the CSA standard - ANSI/CSA/IGSHPA C448 SERIES (latest version), "Design and installation of ground source heat pump systems for commercial and residential buildings. #Ontario building code basement insulation install#When using a licensed professional it is highly recommended that you obtain proof of their licence to install equipment in your province or territory (PDF, 120 KB)
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