Pump was here when we moved in 18 yrs ago, not sure how old it is. We are on well water. About 6 months ago water started (after 5 seconds of running)spitting and sputtering out of hot water faucet. My husband asked several people about the air in the pipes and they said they never heard of such a thing. Not sure what to do at this point. Any suggestions? My husband is on disability and hard for him to do something's. Do we need a plumber? Thanks for your time. Pam S.