The answer to 'how much does backflow preventer cost' is that the cost can vary significantly depending on several factors. Typically, the price range for a backflow preventer installation can be anywhere from $150 to $1,000 or more.
The main factors that influence the cost of a backflow preventer include the size and type of device needed, the complexity of the installation, the materials required, and the labor costs in your local area. Larger commercial or industrial backflow preventers tend to be more expensive than smaller residential models. Additionally, if the installation requires significant plumbing work or needs to be done in a difficult-to-access location, the labor costs will be higher.