The answer to 'how much is backflow preventer' is that the cost can vary widely depending on several factors. Backflow preventers are devices installed to stop contaminated water from flowing back into the clean water supply, and they are an important safety component in many plumbing systems.
The price of a backflow preventer can range from around $100 to $1,000 or more, depending on the type, size, and complexity of the device. Factors that influence the cost include the material (such as brass or stainless steel), the number of valves, the size of the pipe, and whether it requires specialized installation. Additionally, the location and accessibility of the installation site, as well as any necessary permits or inspections, can also affect the overall cost.