Shut off electricity to water heater.Turn off the main water supply. Open all fawcets. Remove hoses from washing machine, drain. Drain water heater. Close valves on all toilets and flush. Close valves so no RV anti freeze goes in water heater. Close all fawcets except one closest to water supply. Connect a circulation pump to main water supply pipe. Put RV antifreeze in a five gallon bucket. Put hose from circultion pump into bucket. Run pump and when anti freeze comes out of fawcet close it and open next one, continue until all are done. Add antifreeze to toilets.
You will need some one to help close fawcets while you keep adding anti freeze to bucket. I use about 10 gallons to do the whole house.
You should get more advice from other people and compare notes as I may have forgotten something, or gotten something out of order.My neighbor usually helps me do this..er I help him.