On-demand (tankless) water heaters heat water directly without the use of a storage tank. Therefore, they avoid the standby heat losses associated with storage water heaters. When a hot water tap is turned on, cold water travels through a pipe into the unit. Either a gas burner or an electric element heats the water. As a result, tankless heaters deliver a constant supply of hot water. You don't need to wait for a storage tank to fill up with enough hot water.
Doctor Piper, Inc. offers a full line of tankless gas water heaters for any residential application including indoor or outdoor mounted designs as well as high-efficient, high-capacity, heavy-duty residential models.
Doctor Piper, Inc. offers the highest capacity and the highest efficiency tankless water heaters on the market, suitable for commercial-grade applications.