Yes! The manufacturer recommends that your water heater is flushed from sediment once per year. Only a half inch of sediment in the bottom of your water heater can reduce the efficiency by up to 35%. Our Paramedics Home Health Check PHHC is the best way to stay on top of your home's plumbing. For only $89.00/year, you get a whole house plumbing inspection and complimentary water heater flush.