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Old 05-27-2015, 05:14 PM   #1
Junior Member
Join Date: May 2015
Posts: 1
Low hot water pressure

My problem is low or almost nonexistent hot water pressure. The hot-water tank is a Suburban SW6D. After purging the winter antifreeze from the water lines, putting the anode back in the HW tank and filling the fresh water tank I flashed up the hot-water tank and proceeded to test the water system. The cold water delivery was as expected with either the pump or a direct connection to city water. The hot water was another matter. Low output at the galley sink and a mere dribble in the washroom sink and tub. I have double checked the valves at the HW tank and the fresh water tank and they are where they should be. Thinking that it might be a problem of an airlock somewhere in the HW system I closed the bypass valve from the water line to the HW tank and directed the water flow to the hot-water lines. The water pressure was similar to that of the cold water lines. My next thought is that there may be a restriction/blockage where the hot-water line connects with the tank. Iím a bit loath to disconnect the HW outlet from the tank and attack it with the air compressor without some feedback from others. Suggestions?

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Old 05-27-2015, 05:39 PM   #2
Senior Member
Join Date: Jul 2010
Location: Waynesville
Posts: 9,535
Sounds like you (Flushed) some (White Crap) into the H/W side when you (Unwinterized)! Try to use Low air pressure at a H/W line downstream from the W/H. Backflush into the W/H as well as the H/W low point drain. Then give the W/H a GOOD flush out while running a BIG bottle brush inside the A-Rod hole with a water jet inside the W/H tank at the same time! Youroo!!
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hot water, pressure, water

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