FAQ: What Is An Indirect Water Heater?

What is the difference between direct and indirect water heaters?

A direct-fired water heater can be heated by propane, oil, or natural gas and has its own burner. Indirect water heaters rely on the furnace or boiler to supply the heat needed for the water.

How long does an indirect water heater last?

Indirect water heaters typically last 15-20 years.

Do indirect water heaters require electricity?

Indirect water heaters use heat transfer to create hot water. This means there are no electric or gas heating elements in the tank itself.

How long do Weil McLain indirect water heaters last?

With proper maintenance, they are expected to last at least 15 years or longer. Weil-McLain boilers come with a 10 year non-prorated heat exchanger warranty for commercial boilers, 12 year non-prorated heat exchanger warranty for residential boilers and two year parts warranty for both categories.

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Is a combi boiler a direct or indirect system?

In a direct system, all of the cold outlets are supplied by the mains. The cold water storage cistern supplies only the hot water cylinder. Alternatively, there may not even be a storage cistern if the property has a combi boiler or an unvented hot water cylinder.

Is an indirect water heater electric or gas?

During the winter, both the boiler and water heater operate using two separate gas lines in a conventional water heater. Since an indirect-fired water heater uses its connected boiler’s energy, it does not require its own gas line.

How much does it cost to replace an indirect water heater?

Indirect water heaters cost $800 to $1,500 on average. An extremely efficient choice, they consist of a tank that pulls heat from a nearby boiler or furnace, rather than relying on an independent heat source. The systems can be fired by gas, oil, propane, electric, solar energy or any combination of these.

How do I size an indirect hot water heater?

Measure the GPM for each point of use, so you know how many gallons will be required during that peak demand time period. Total gallons × 0.85 will give you the quantity of hot water from the tank itself (on average for 120°F storage and 40°F inlet-temperature).

Will gas water heater work without electricity?

Gas water heaters don’t use electricity as a fuel, and many homeowners assume they will work in a power outage. If your gas water heater uses a continuous gas pilot light, it is likely that your gas water heater will continue to function normally in the event of a power outage.

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Is a 40 gallon indirect water heater enough?

Most indirect manufacturers rate their tanks at varying BTU/Hr inputs. Going from 120 degrees to 150 degrees will increase the effective size of the tank by 25% just like that a 40-gallon tank can give the initial output of a 50-gallon tank, and help prevent Legionnaires as a bonus!

How can I get hot water without electricity?

A woodstove or fireplace can be a lifesaver during a power outage, and not only as a general source of heat. You can also boil water as you would over a campfire, with the pot placed atop a woodstove, or via the built-in water reservoirs some models include.

Should I replace my 30 year old boiler?

The industry standard advice is to replace your boiler every 10 years, however some people still have boilers working that are over 30 years old. The very old boilers that keep going almost indefinitely do so because there is very little to go wrong in them. This might sound ideal, but they are terrible on gas bills.

How do you clean an indirect water heater?

Open the drain valve while turning on the pump and let it run for 10 minutes so as to scrub the coil. Close the valve and turn off the pump and let the chemical sit in the indirect for approximately three to six hours. Turn on pump while opening valve and let it run for another 10 minutes.

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