Following are those Editors' Choice products from the past year that generated the greatest number of reader inquiries.

THE HP-50 HEAT PUMP WATER HEATER uses an integrated air source to help deliver and Energy Factor of 2.0, more than twice the energy efficiency of a standard electric storage water heater. Intended for residential applications, both in new construction and drop-in replacement, the unit has a storage capacity of 50 gal., and meets the qualifications for Energy Star listing. It measures 21" in diameter and 75.5" tall for a slim, portable profile that makes for easier installation in spaces with restricted access such as attics, basements and mechanical rooms. As a heat pump, it performs best in climates with average, year-round temperatures above 40°F. It requires at least 1,000 cubic ft. of surrounding air space. It features 2.5" thick insulation to prevent standby loss, a premium resistored anode rod, stainless steel resistored elements and a factory-installed brass drain valve.

Rheem
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THIS AUTOMATED BACK-UP POWER SOURCE couples with any HVAC unit or boiler to provide a continual supply of power so long as fuel supply (natural gas, propane or oil) is uninterrupted. The indoor unit generates up to 22kW of electricity and discharges through the same PVC venting as a furnace. The unit is quiet and runs with an engine operating temperature only 5° above ambient. It is ideal for areas of the country plagued by extreme weather conditions such as hurricanes or ice storms.

Everlite Hybrid Industries
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THE MATRIX TOTAL HOME SYSTEM incorporates a condensing water heater, condensing furnace, condensing boiler and a heat recovery ventilator. It requires less electricity than equivalent systems, and features a heat exchanger able to reduce gas usage as much as 30%. It optimizes heating, cooling and ventilation, eliminating the need for separate appliances and their redundancies.
NTI
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THE TWINTITE DRILL ATTACHMENT is for torquing two screws simultaneously. The TwinTite attaches to most ¨ü" reversible cordless drills and fits couplings 1¨ö" to 4". Individual torque settings allow each clamp screw to be tightened to the correct torque specification. Torque is preset to 60 in./lb. or 80 in./lb., and can be recalibrated with a torque wrench.
Wheeler-Rex
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THIS CORDLESS 3-PIECE COMBO KIT features a new 10.8V flashlight, as well as a 10.8V lithium-ion driver-drill and a 10.8V lithium-ion impact driver. It includes an Energy Star-rated battery charger, two batteries and a metallic case. The flashlight delivers 540 minutes of continuous light on a single charge and weighs just .55 lb. The drill-driver has a ¨ù" hex driving shank for a range of fastening and drilling tasks. It delivers 200 in./lb. of torque. The impact driver provides 0-3,000 blows per minute, with a durable hammer-anvil design.
Makita
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14 NEW INDIRECT SOLAR WATER HEATING UNITS have been introduced, increasing the company's offerings in the solar category to 32 models. The new heaters include six EcoStor2 SC double wall, single coil gas backup models, six EcoStor2 double wall, single coil TTW gas backup models, and two EcoStor2 SC double wall, single-coil Eco-Defender gas backup models. With models to suit almost any application, solar systems are easier to install and more affordable.
Bradford White
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THE DIRTCAL LOW-VELOCITY ZONE DIRT SEPARATOR is designed to continuously remove dirt in boiler systems. It is ideally suited to applications using mod-con boilers, or any boilers with compact heat exchangers that have very small passageways. The separator features specially designed internal media that assists in separating dirt particles. It creates less pressure drop than that of a comparably-sized basket or Y-strainer. It can remove particles as small as 5 microns.
Caleffi
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THE HEATWAVE LINE OF ELECTRIC SNOW-MELTING EQUIPMENT is now offering both mats and cables with single-point connections. Mats are available in both 2' and 3' widths. Many control options are offered and free design assistance is available. An operating snow melt system can reduce liabilities to slip and fall incidents, as well as reducing the wear and tear on a driveway or walkway from salt or snow-removal equipment. No mechanical room is required, and no annual maintenance is needed.
Watts Radiant
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THE NEOTHERM LINE OF CONDENSING BOILERS offers a space-saving hydronic solution that delivers 95% energy efficiency. Light commercial sizes are available with 285, 399 and 500 MBH. New residential models have been introduced with 80, 105, 150 and 210 MBH systems. All sizes will soon be offered as volume water heaters. The direct-vent, sealed-combustion boilers modulate with a 5:1 turndown. Zero clearance to combustibles and convenient top connections make the line a good choice for tight installation spaces. Fired with natural gas or LP, the boilers feature an ASME stainless steel heat exchanger and integral three-speed boiler pump.
Laars
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THIS BARIATRIC WALL-HUNG WATER CLOSET AND CARRIER SYSTEM is able to withstand loadings of up to 1,000 lb. It features an open-front, elongated, anti-microbial polypropylene seat for enhanced patient comfort. It is fabricated from type 304 stainless steel and is available with an anti-microbial powder coating. Designed specifically for use in hospital applications, the fixture is manufactured in accordance with ANSI A112.19.12 standards. The carrier is manufactured in accordance with ANSI A112.6.1M standards and meets the maximum deflection requirements when subjected to a load of 1,000 lb.
Zurn
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