Catchpole was owner of the Florida line of water boilers.

Remnants of the horse-driven gear and water boilers can still be seen today.

There are a couple of water boilers that we can strip, cut open, and make to serve as the top end.

With an internal-combustion engine, there wouldn't have to be a large water boiler within which to make steam.

Most commonly found on a water boiler.

For security purposes these reactors were given the code name "water boilers".

I followed him down steps that led into a sort of cellar that was probably meant to house just the furnace and hot water boiler.

An electric water boiler consists of a water reservoir with a heating element at the bottom.

Natural gas preheating with heat exchanger and two hot water boilers.

It won't drive the kettle but it might just keep your central heating or (gas) hot water boiler going.