To lack even the rudiments of a hot-water system is to pay more per pint of hot water than anyone else has to pay.

The tiles generate warmth after sundown with the help of the hot-water system.

Early hot-water systems relied on gravity to circulate the water.

As with a hot-water system, the boiler sections inside the furnace should be cleaned and a small amount of water drained to check rust content.

The heart of the hot-water system is the central boiler.

In addition to the boiler, pipes, radiators and circulating pump, hot-water systems also have an expansion tank.

(The cost of installing the two hot-water systems was $25,000.)

The main tank was about one-third full, the hot-water system seemed to be nearly full.

The building plans to borrow about $1.5 million to begin work on the facade, the boiler room and improvements to the hot-water system.

The "hot shop" - where visiting artists will hold classes in glassmaking - provides heat for the hot-water systems.