Crown Mega-Stor Indirect Water Heater Review

411 plumb The Crown Mega-Stor Indirect Water Heater is an excellent choice for heating domestic hot water when you heat your home with an oil or, gas boiler.  The Mega-Stor is available in 5 sizes or, models of the round vertical tank from 26 to 112-gallons, and in 38 and 51-gallon sizes in a rectangular horizontal tank which may also have the boiler mounted on top of it. Indirect water heaters are well known for providing large amounts of hot water out performing similar sized gas and electric water heaters often by up to 3 times. Crown Boiler Company is located in Philadelphia, Pennsylvania and was started in 1949 as a family owned and operated business. With the introduction of a residential boiler line in the 70’s the company underwent rapid growth and is a national manufacturer today.

The Crown Mega-Stor Indirect Water Heaters feature a tank constructed from 316l stainless steel and have a stainless steel coil through which hot water from the boiler flows heating the water on the tank. The coil is plumbed on a separate zone on the boiler to control when water needs to be heated. The Crown Mega-Stor Indirect Water Heaters can provide a first hour delivery from 103 to 417-gallons of hot water with a 90-degree rise depending on the size of the water heater and boiler used. The Mega Stor comes in the model MS-26 26-gallon, MS-40 39-gallon, MS-53 51-gallon, MS-79 80-gallon, and MS-119 112-gallon round tanks and the MSH-40H 38-gallon, and MSH-53H 51-gallon horizontal tanks which most Crown Boilers can mount on top of for a small footprint for your heating and domestic hot water package. The Crown Mega Stor Indirect Water Heaters have an removable inspection cap on the top of the round tanks and on the front of the horizontal tanks which can be opened to allow viewing the inside of the tank and the coil. The Mega Stor has an adjustable Honeywell aquastat and a drain at the bottom provided to allow flushing sediment from the tank the tank. The Mega Stor tanks are insulated with 2” polystyrene foam insulation to minimize standby heat loss with a jacket made of high impact plastic. The Crown Mega-Stor Indirect Water Heaters come with a Lifetime Warranty covering leakage on the stainless steel tank and coil.

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3 comments on “Crown Mega-Stor Indirect Water Heater Review
  1. Tony Lawrenson says:

    I need to know how to drain and flush my megastor ms 53

    • Redwood says:

      Hi Tony,
      You would follow the same instructions for any water heater except in your case just turn off the boiler for a few minutes while you do it.
      Here are the basic instructions:

      1. On a gas water heater, turn the gas valve to the off position. On an electric water heater, turn the electric off to the heater.
      2. Shut the cold water off to the water heater.
      3. Open a hot water faucet.
      4. Connect a hose to the drain valve on the heater and run to a drain.
      5. Open the drain valve and allow the tank to completely drain.
      6. Turn back on the cold water into the water heater.
      7. Allow the water to run through the water heater and out of the drain valve. Do this for approximately five (5) or ten (10) minutes.
      8. Close the drain valve and allow the tank to refill, keeping the hot water faucet open. When water comes out of the faucet, the tank is full.
      9. Turn the power back on for electric water heaters, or turn the gas back on and relight the pilot if applicable on gas water heaters.

      I like to repeat steps 2 – 7 several times if the tank has not been regularly flushed.

  2. Matt Brodeur says:

    The previous owners of my house had a Crown Mega-Stor installed about 8 years ago. It’s leaking now and the Lifetime Warranty only covers the original purchaser. Crown was no help at all to me. So don’t bother spending any extra money because of the Lifetime Warranty if you plan on selling your home.

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