Customer stated that there was a leak on PRV and that tankless wasn’t working properly and also a leak under guest bathroom. Gave customer culture to replace PRV in main house shut off valve customer greets. I went ahead and furnishing installed new PRV and new three-quarter inch shut off valve tested and No leaks were present at this time. Gave customer quote to diagnose tankless issue and at this time customer didn’t want to proceed. Also ran water in guest bathroom and didn’t see any leaking in crawlspace at this time. Cleaned up work area.