We found that the pressure tank was short cycling due to water backflow in the system and recommended installing a spring check valve on the water line ahead of the pressure tank to improve efficiency and reliability. A check valve was installed in the crawl space within the poly line prior to entering the building; the system was drained, insulation removed, an existing coupling replaced with a 1″ spring check valve, and the line reconnected to the existing 3/4″ PEX. The system was then restored and tested, confirming normal operation with short cycling eliminated and proper pressure maintained. Initial air in the line cleared after the first cycle. We also discussed adding a check valve at the well pump, which will be revisited during warmer weather, and all insulation was resecured with the crawl space properly resealed.
