Lennox Industries. The Dave Lennox Signature Collection's G61V gas furnace line features SilentComfort technology to reduce operating noise. All G61V furnaces are Energy Star qualified and run at low speeds up to 80% of the time. Two heat-output levels, low and high, keep temperatures more even, the maker says. Variable-speed operation helps control humidity. (800) 453-6669. www.lennoxinternational.com.

Solatube International. The Solar Star Gable Fan runs on a solar-powered motor to provide up to 1,200 square feet of circulation coverage and prevents attic heat from building up in the summer while helping eliminate condensation in the winter. Using a10-watt solar panel, the fan requires no electrical wiring and can be installed to the inside face of any existing gable vent. (800) 966-7652. www.solatube.com.

Aprilaire. The Ventilation Control System features a 6-inch damper, controller, and transformer that work with outdoor air temperature and indoor relative humidity to control ventilation and indoor air quality. The timed control opens a damper to meet a desired ventilation requirement that is set by the installer with the ventilation knob and cycle time setting. Once the requirement is met, the controller closes the damper. (608) 257-8801. www.aprilaire.com.

Comfortmaker. The SoftSound 1400R split-system air conditioner delivers an efficiency of 14 SEER and uses environmentally friendly R410A refrigerant, which does not emit ozone-depleting chlorines. A compressor sound jacket and special fan motor enclosure reduce noise. The fan motor enclosure also prevents dirt and debris from infiltrating the motor. (800) 315-4370. www.comfortmaker.com.

For more product information, visit ebuild, Hanley Wood's interactive product catalog.