At this stage, the safest and most cost-effective move is to have a qualified HVAC technician inspect it before any restart attempt. In many cases, parts like the blower motor, control board, and sensors can sometimes be cleaned or replaced without replacing the entire furnace—but only after a proper assessment.
You may want to contact a local specialist experienced in emergency HVAC situations HVAC Repair Toronto , such as , where technicians handle flood-damaged heating systems and can determine whether repair or replacement is actually necessary.
One important thing: even if the furnace “looks fine after drying,” hidden electrical damage is common after flooding, so testing it without inspection is where most expensive failures happen.