You should drain, flush and clean your RV's hot water heating tank twice a year — four times if you are a full-timer. This helps to keep the tank clean, sediment out of your usable water, and everything working properly and for a long time.
Shortened Lifespan: A water heater that isn't flushed regularly may experience corrosion and other damage more quickly, leading to a shorter overall lifespan. Water Quality Issues: Sediment can affect the taste and quality of the water, potentially leading to discolored or foul-smelling water.
At the very least, you should do a deep clean after each trip, as you won't want to store your RV with wastewater in the tanks. Otherwise, it's recommended that you clean your RV tanks monthly in the summer and every other month in the winter.
Draining the Tank
I want to emphasize the importance of draining your water heater and would recommend you draining it every time you're done camping, unless you are planning another trip in less than two weeks. I would also empty your fresh water tanks as well.
Using an RV Water Heater Flush Wand (Camco makes them, available at Camping World or Amazon.com), flush out the water heater tank. To do this, attach a garden hose to the wand (which has an on/off switch on it) and turn on the water pressure. Insert the wand into the tank and turn it on.
Anode rods generally can last about three to five years but it really depends mostly on the quality of your water and how much water travels through your water heater.
Figuring out how often to empty and clean your RV's toilet cassette depends on a few factors, like how many people are using it and how long you're on the road. A good rule of thumb is to manage this every 3 to 5 days to keep everything running smoothly and smelling fresh.
Really not best practice to leave completely empty as the contents can dry and form solids. I always empty first, then use grey water tanks to flush hose. (All that soapy water does wonders.) Then I add about 2-3 gallons back to black water tank and throw in one of the sanitizer packs to control odor.
– RV manufacturers generally recommend a sanitizing solution of 1/4 cup household bleach per 15 gallons of water (1 part bleach per 960 parts water) or approximately 1,042 ppm (parts per million). This solution would remain in the plumbing system for a minimum of three hours to sanitize the system.
But in general, you'll need to pump your tank every 1-4 weeks. A better way to go about this is to watch out for the telltale signs your specific tank is full and start to come up with a regular schedule that way. These include visual indicators on the tank, unpleasant odors, and more.
If neither you nor a professional have flushed your water within the last five years, Water Heaters Now recommends not flushing it yourself.
You can flush your water heater yourself if it's done on a regular basis. This guide will take you through the steps to drain and flush a gas or electric water heater. Learning how to clean a water heater is an essential part of maintaining your plumbing system.
Some RVers report that a 40-gallon black tank will last two people about 10 days before needing to dump, but again, this all depends on toilet paper usage, water usage, and the number of people using the water systems. Another technique is to always dump when your tanks are two thirds or three quarters full.
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Start with the black tank. Remember, the toilet waste water dumps directly into this tank. Never dump this water anywhere except designated dump stations. Dump stations are always clearly marked.
RV black and grey tanks require lots of water to control odors, help with waste breakdown, keep sensors clean, and stimulate waste-digesting bacteria. Consider storing your RV with water and a bacteria and enzyme tank treatment in the black tank when freezing isn't a risk.
An RV is designed only to transport the waste, while a septic system is designed to treat the waste and return clean water back to the water table. Two major issues arise when emptying RV holding tanks into a septic system, and both can lead to catastrophic system failure.
Remove it from the tank and check its condition. A corroded anode rod may look pitted; in serious cases, sections of the rod may be missing altogether. If the anode rod is corroded, it's time for a replacement.
Magnesium anode rods are usually preferred in RV water heaters because they offer better protection in smaller tanks and can improve water quality, which is crucial in limited spaces.
Customers say the powered anode rod effectively eliminates unpleasant sulfur odors from hot water systems, with many reporting immediate results after installation. The product is praised for its ease of installation and clear instructions, making it a convenient choice for homeowners.