A lot of folks that own coal stokers use the domestic hot water coil in them for making and using hot water the year round to eliminate the need for a hot water heater or only requiring a smaller hot water heater when the coal stoker is not used for heating in the off season from May to October annually.

You can minimize boiler heat losses if you have a well insulated indirect hot water heater. With this system your boiler water heats the domestic water inside a insulated tank. When there is no demand for re-heating domestic water the boiler can idle down to a lower temperature, one that is the result of any "keep coal fire alive" timer.

Water heating - Wikipedia. 2018-12-28 · Water heating is a heat transfer process that uses an energy source to heat water above its initial temperature. Typical domestic uses of hot water include cooking, cleaning, bathing, and space heating. In industry, hot water and water heated to steam have many uses..

These indirect water heaters can be paired with a domestic hot water storage tank, or simply used to circulate domestic hot water through the building loop for instant hot water. These boilers are ready-to-install packaged systems featuring a perfectly matched powerful and efficient burner/boiler combination.

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The coal hot water boilers from Keystoker make for a powerful heating option to use in your home, or commercial building. Using anthracite coal to burn, or oil if you purchase a dual fuel kit, this coal burning boiler can produce anywhere from 85,000 to 528,000 BTUs.

Domestic heating coal fired hot water boilers are widely used in north of China, Mongolia and Russia. Coal is the cheapest fuel for domestic heating. The installation of doemstic heating coal fired hot water boiler is also very easy.

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Our engineers developed an automatic stoker unit equipped with a coal hopper that held enough fuel for several days. This allowed the coal to be cleanly burned and without frequent maintenance. They then saw the need to make a hot water boiler specifically designed to burn coal and built them in multiple sizes to meet our customers' needs.

Our smallest model (S130) will provide heat for an entire home including domestic hot water at 70% or less than the cost of conventional oil, gas or electric systems. For more information about the Coal Gun, as well as a list of options, see: What makes the Coal Gun a great coal boiler. Options for the Coal Gun

We have a Keystoker combination coal/oil burner, a KA-6, that was installed last October. We have the old water filled radiators for heat in most of the house, with baseboard heat in just the kitchen. Domestic hot water is heated through the boiler then pushed up to faucets. First, let me say that I love the coal burner.