A new homeowner discovered their water heater flue was sloped downward toward the chimney instead of upward, creating a risk of carbon monoxide backdraft. HVAC technicians and Reddit commenters confirmed the danger and recommended immediate inspection or replacement. Carbon monoxide is odorless and colorless, making proper venting critical for safety. If replacement is needed, a heat pump water heater eliminates the venting issue entirely and lowers energy bills. Homeowners should install CO detectors on every level and near sleeping areas. Local rebates and tax incentives can offset the cost of upgrading to a more efficient model, turning an urgent fix into a long term savings opportunity.
