In most cases, all you need to do is turn off the power to the system, turn on the cold water supply by opening up the valve, hook up a garden hose to carry the water and sediment away from the tank and then open up the drain valve and the pressure relief valve.
Fill the tank with a solution of white vinegar and water (2:1 ratio) until the calcium deposits are fully submerged. Let the solution sit for several hours or overnight to break down the scale.
Sediment buildup in your water heater can be a major problem. Not only will it reduce the amount of hot water you have for cooking, cleaning, and bathing, but it can also damage your water heater and shorten its serviceable lifespan.
Removing Calcium Buildup
Once you know the signs to look for, you can remove calcium buildup from your water heater. Basic calcium removal just requires some vinegar along with a little time and patience.
Vinegar is part of clearing and cleaning a clogged drain, and it's also helpful in removing sediment from water heaters. After you've drained your hot water tank, you can pour a gallon or so of vinegar through it.
White vinegar is a natural solution that can be utilized to dissolve calcium buildup. Sitting overnight, you will be able to remove lime buildup from the drain while avoiding the harsh chemicals in traditional drain cleaners.
On average, flushing a water heater takes about one to two hours, depending on the tank size and the amount of sediment to be removed. This is slightly longer than it takes to drain the tank as you add another step to the process.
If neither you nor a professional have flushed your water within the last five years, Water Heaters Now recommends not flushing it yourself.
Disconnect the cold-water inlet, hot water outlet, T & P valve, or element holes and, using a funnel, pour one (1) gallon of regular household cider vinegar into the water heater. (Do not dilute with water) ** NOTE: For Electric Heaters, it is recommended you remove the elements from the heater and lay them in a pan.
Can I use CLR on my water heater? No, Jelmar DOES NOT RECOMMEND the use of CLR on a water heater; however, there is a web site that does.
Make sure you turn off both the water heater and water supply, remove the anode rod, and then pour about a gallon of vinegar into the tank (using a funnel is recommended). Be sure to close the drain valve and allow the vinegar to soak for at least six hours. After soaking, reopen the drain valve and turn on the water.
Flushing your tank will remove some of the calcium from your water heater. To get rid of the rest, you should treat the calcium with a descaling solution. You can find many descaling solutions at your local hardware store. However, an often cheaper and equally effective option is to use vinegar or lye.
Expect a pro to charge you between $75 and $200 to come to your home to flush your water heater, depending on where you live. While this cost deters many homeowners from performing this annual maintenance, it can extend the water heater's lifespan by years, making it worth the additional cost.
Tip: The build up of sediment in the tank can reduce your water heater's energy efficiency and also clog your water lines. Avoid these problems and increase the life of your unit by flushing your water heater every six months.
It is recommended that you flush your water heater at least once per year. Doing so will help to prevent the potential problems that sediment can bring over time. Typically, it takes one to two hours to flush a water heater. The size of your tank will impact the amount of time it takes to drain.
The longer your water heater goes without a drain-and-flush, the more sediment and minerals will accumulate at the bottom of the tank. Eventually, this causes scaling. Ever noticed that hard, mineral buildup on your sink faucets and shower heads? That's scale: accumulated mineralization.
Water Heater Lifespan
If your tank water heater is more than 10 years old, it may be time to consider replacing it. With proper maintenance, a tank water heater tank should last six to 12 years. A tankless water heater can last for more than 20 years. Check your water heater's warranty for the most accurate timelines.
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.
Over time, your hot water heater tank will accumulate sediment from the minerals and particulates in your fresh water supply. If the sediment is not removed, it can cause leaking, cold showers, odd noises, and even shorten the lifespan of your water heater.
The main difference between CLR and vinegar is that CLR is stronger and better at removing mineral build ups like limescale. Vinegar is better at cleaning rust. It's also cheaper, versatile and safer than CLR.
Final Verdict. The best overall hard water stain remover is CLR Brilliant Bath Foaming Action Cleaner.
Soak a rag or a cloth in vinegar or lemon juice and wrap it around your tap, ensuring all areas are covered. Secure the cloth with an elastic band and leave for an hour. Occasionally squeeze the cloth to release more of the acid onto the tap. Remove the cloth and wipe away the limescale.