Building Products Top 100Part 4: 25-1

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Heat Transfer

The Phoenix solar water heater combines domestic hot-water storage with a 97-percent-efficient, gas-fired backup in one unit. In addition, the unit features side tappings in the jacket that permit auxiliary connections to a hydro-air system for space heating. Made from stainless steel, the product incorporates a dedicated solar heat exchanger. 800-323-9651. www.htproducts.com.

19 L.E.Johnson Products.

L.E. Johnson

Designed for applications where a sliding pocket door and a swinging door are not an option, 2610F wall-mounted sliding door hardware is surface-mounted outside the wall. No close fitting is required, and the hardware can be adapted for particular installations. The hardware can support doors weighing up to 125 pounds. 800-837-5664. www.johnsonhardware.com.

18 Stiebel Eltron.

Stiebel Eltron

The Tempra Tankless on-demand Electric Water Heater eliminates the standby heat losses associated with tank systems and reduces water-heating bills by 15 percent to 20 percent, says the firm. The compact unit's microprocessor control allows exact temperature setting from 86 degrees F to 125 degrees F through a knob and a digital display. The heater has all-copper piping and heating elements. 800-582-8423. www.stiebel-eltron-usa.com.

17 Rinnai.

Rinnai

The Tankless Heating System combines a tankless water heater with a hydronic air handler to deliver on-demand heat using the same source for both domestic hot water and space heating. For optimum heat output in both applications, a priority system temporarily shuts down the air handler during periods of high hot-water demand, preventing the unit from blowing cold air. 800-621-9419. www.foreverhotwater.com.

16 GE.

GE

Available in indoor or outdoor models, these tankless gas water heaters measure 23 inches high, 14 inches wide, and 10 inches deep, making them ideal for small spaces, such as attics and closets. Users can choose from two flow rates: a natural-gas 7.5-gpm model or a 9.4-gpm unit available in natural gas or LP gas. By heating water only when needed, the tankless units maintain efficiency ratings of .82, compared with .53 to .62 for standard water heaters, and can save homeowners up to 25 percent on water-heating costs annually, the manufacturer says. 800-626-2000. www.ge.com.