Building Products Top 100Part 1: 100-76

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Takagi

Specially designed for single-family homes, the T-K3-SP tankless water heater delivers efficiency in a compact design, but at a lower price point than previous models. With thermal efficiency of 80 percent for natural gas and liquid propane, and the ability to provide unlimited hot water up to 7 gpm, the T-K3-SP allows for multiple hot-water activities at once. The unit measures 13.8 inches wide, weighs 40 pounds, and can be mounted indoors or outdoors. 866-356-9190. www.takagi.com.

88: ClimateMaster

ClimateMaster

Tranquility 27 6-ton geothermal and water-source heat pumps use a zero-ozone-depletion refrigerant. Units feature a variable-speed motor and double-isolated compressor mounting. 405-745-6000. www.climatemaster.com.

87: Tiger Mountain Innovations

Tiger Mountain Innovations

Rustic-looking Squak Mountain Stone slabs are made of recycled paper, cement, fly ash, and recycled glass. They come in five colors, and each piece is unique, the maker says. The product is 11/2 inches thick. 425-486-3417. www.squakmountainstone.com.

86: FireCrystals

FireCrystals

For use in indoor or outdoor natural gas fireplaces, eco-friendly FireCrystals have the lowest fine-particulate emissions per unit of heat delivered, the maker says. As a direct replacement for gas or wood logs, FireCrystals emit all the beauty of a burning fire without releasing soot or ash into the environment. Their gemstone look is available in a multitude of colors that add extra interest to the application. 866-875-6615. www.firecrystals.com.

85: Renewed Materials

Renewed Materials

Made out of post-industrial aluminum milling scrap, Alkemi is SCS-certified and has 35 percent recycled material by weight, or 60 percent by volume. The product comes in two finishes and in a variety of colors. It can be worked like conventional solid-surface material. 301-320-0042. www.alkemi.com.