Boyertown Furnace Company manufactures heating equipment, including oil-fired warm-air furnaces and boilers. The Hallmark furnace was designed and manufactured beginning in 1939; Boyertown Furnace took over its manufacturing in 1981 and moved manufacturing facilities to Boyertown, Pennsylvania, in 1980. Its employees continue the Hallmark tradition of craftsmanship and serviceability.
ENERGY STAR
ASME Listed
Compliance program
Adams Manufacturing CompanyFounded in 1945 by Sidney Schonberger, Adams Manufacturing Company makes heating and indoor-air equipment, from its original gas conversion burners to furnaces, unit heaters and air cleaners. The Cleveland manufacturer expanded its facilities to 75,000 square feet while adding the Dornback furnace line, and remains a family-run business led by the Schonberger family. Adams is also known for its condensing oil-fired furnace, developed through a National Oil Research Alliance grant and offered in models reaching 99% efficiency.CLEVELAND, OH
LMF Manufacturing LTDFrom its Montoursville, Pennsylvania shop, family-owned and family-operated LMF Manufacturing builds American-made furnaces, boilers, and steel fire pits for home and garage heating. The company also supports its heating equipment with replacement parts, while emphasizing American steel and fuels that can be grown in the USA.MONTOURSVILLE, PA
Patterson-KelleyFounded in 1880, Patterson-Kelley designs and assembles commercial heating equipment in East Stroudsburg, Pennsylvania, and has served the commercial heating industry for more than 140 years. Its history spans feed-water heaters, heat exchangers, and gas-fired commercial boilers; today its equipment is distributed throughout North America and supported by technical and application services.EAST STROUDSBURG, PA
U.S. Boiler Company, LLCU.S. Boiler Company manufactures hydronic heating equipment, with production and engineering facilities in Lancaster, Pennsylvania. Its domestic manufacturing operation produces products designed for North American use, and the company says its Lancaster facilities employ nearly 300 people. The company is part of Burnham Holdings and has developed residential and commercial heating products for more than 150 years of brand history.LANCASTER, PA