Temco. New to the Prestige Series of vent-free fireplaces and log sets, the ADCH39 F firebox measures 36 inches wide by 28 inches high. The unit's construction allows for wider and deeper hearths without changing the framing dimensions. It includes a herringbone refractory brick lining and seamless face panels. (615) 831-9393. www.temcofireplaces.com.

Walter Moberg. Designed to fit in the company's Modern Rumford fireplace, the Lodge Series gas log set offers realistic looks with flames that rise as much as 30 inches and encircle the logs and a hearth effect of burning coals. The logs are available from 26 to 46 inches in width. (503) 227-0547. www.modernrumford.com.

Napoleon. The GDIZC zero clearance direct vent gas insert combines the smallest insert in its class with more than 400 square inches of viewing area. The unit provides 20,000 BTUs of heat and is 85% efficient. It includes concealed control compartments, a standard heat circulating blower, and optional trim kits. (800) 461-5581. www.napoleonfireplaces.com.

Vermont Castings. The DVHVAC36 combines a direct-vent fireplace with an air filter and circulating blower that works along with an optional air conditioner. The unit operates with a 24-volt thermostat. An optional mantel cabinet with front access door is available. (905) 670-7777. www.vermontcastings.com.

Regency. The Excalibur P90 direct-vent fireplace features a flush front, a realistic-looking log set, brick-panel floor, and a variable-speed thermostatic blower. The arch surround is available in black or gold. Optional features include single or double screen doors, brick panels, thermostat, and remote control. (866) 867-4328. www.regency-fire.com.

Heatilator. The industry's largest wood-burning fireplace, the I100 unit offers a 50-by-33-inch opening. The unit comes with a brick or herringbone refractory, a choice of fully framed vintage iron glass doors or traditional DM glass doors, and a Mission-style red oak surround. (800) 843-2848. www.heatilator.com.

Martin Fireplaces. The company is enhancing its DV5500H direct-vent fireplaces with a 45-degree design that allows for either horizontal venting through the wall or vertical venting through the roof. The units are heater-rated for efficiency, feature a louver look, and come with a flex line and factory-installed wall switch wire. (256) 767-0330. www.martinfireplace.com.

Lennox. Spectra direct-vent fireplaces feature Spectra Flame burner technology, which offers 41,000 BTUs per hour at 72% heating efficiency. Available in 36- or 41-inch-wide openings, the units come with a brickaded firebox interior for a weathered masonry look and a cast iron finish with optional gold-plated and brushed nickel facings. (800) 953-6669. www.lennoxhearthproducts.com.

Aladdin Hearth Products. The 4100i wood-burning fireplace insert features a glass door with three panes and cast iron trim. The 2.5-cubic-foot firebox includes the company's Quadra-Fire Advanced Combustion Technology, which burns smoke in four zones, reducing emissions, improving efficiency, and increasing heat transference. (800) 234-2508. www.aladdinhearth.com.

Skytech Systems. Designed for gas fireplaces and stoves, the 3001 PF programmable remote control features a two-hour out-of-range shutoff and a learning feature for replacement controls. The controls operate on radio-frequency control, allowing operation within 20 feet of the receiver with no line-of-sight requirement. (888) 672-8929. www.skytechsystems.com.

Heat-N-Glo. The Gateway is the first B-vent fireplace that can be vented vertically or horizontally, allowing it to be installed anywhere in the home, the maker says. The fireplace features Intellifire technology, which includes an ignition system that provides a pilot flame only when needed, saving gas. A battery backup system allows the unit to run during power outages. (800) 669-4328. www.heatnglo.com.