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"Although some may question the efficacy of having your ducts cleaned, it is a necessary part of routine maintenance. It ensures your HVAC system is working properly and allows your home to be filled with clean, allergen and dust-free air. If you notice a decrease in the air quality in your home, it may be time to consider a duct cleaning service. Power Vac of Ottawa can provide before and after pictures of the service to visualize the impact of the duct cleaning service."
<https://www.powervacofottawa.ca/duct-cleaning/>