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Heat Innovations Inc. manufactures and distributes hydronic radiant in-floor heating systems and supplies the equipment and design expertise needed to put them to work in homes, garages, commercial spaces, and multi-building projects. Based in Winkler, Manitoba, the company’s in-house CIPH-certified hydronic design team develops building-specific systems, including heat-loss analysis and LoopCAD layouts, while its dealer network serves customers across Canada. Heat Innovations also ships throughout Canada and supports contractors with a broad online hydronics supply business.
Heat Inverse, founded by manufacturing and prototyping entrepreneur Romy Fain, develops CoolFilm, an ultra-thin passive cooling film for outdoor equipment. Based in Ithaca, the company uses thermodynamics and photonics to create a durable material that rejects solar heat and emits internal heat without electricity or moving parts. Its pilots have included battery storage, solar inverters, refrigerated trucks and power-generation equipment, with reported cooling gains including a 25–50% reduction in battery HVAC duty cycles.
Born from a late-1970s request to capture and distribute heat from a gas log set, Angier-based Heatmaster manufactures gas hearth products, including vented and vent-free gas logs. The company produced its first gas logs in 1984 and is known for a distinctive molding process that uses real logs as models, along with individually crafted and hand-painted finishes. After the current owner purchased the company in 2005, Heatmaster expanded its product lines while retaining its North Carolina manufacturing roots and focus on realistic fireplace design.
From its Brooklyn base, HeatVision develops smart heating-management technology that monitors boilers and HVAC systems around the clock, alerts users to failures, and helps schedule maintenance. Its wireless controller and connected app are designed to give homeowners, property managers, and plumbing partners earlier insight into heating problems while improving temperature control and energy use.
Founded in New York City in 2015 by former Waldorf Astoria executive chef John Doherty, Heavenly HARVST Foundation produces and provides chef-curated, shelf-stable meals to hunger-relief programs. Its ready-to-eat meals are made without preservatives or artificial flavorings, designed to offer substantial nutrition and dignity to families who may lack reliable access to food or a full kitchen. The 501(c)(3) says it has distributed more than 500,000 meals nationwide, including through disaster-relief and children’s programs.
Built for people who treat heavy music as part of their identity, Heavys is an audio company focused specifically on rock and metal listeners. Its headphones are tuned around the demands of dense, layered recordings, while its licensed artist Shell program gives fans a way to express their allegiance and sends ongoing royalties to participating artists. The company says its community includes more than 200,000 fans across 30-plus countries.
Founded in Scarborough, Ontario, in 1950 as Howard Marten Process Systems, Hebeler-Howard Marten designs and manufactures custom fluid systems for large rotating-equipment OEMs worldwide. Its engineers take projects from concept through in-house production, with manufacturing facilities in the United States and Canada and a particular depth in lubrication systems for power-generation equipment and mining mills and crushers. HHM also supports equipment in the field with factory testing, replacement parts, commissioning and retrofits.
Founded by Jennifer Posey in 2007, Hedonist Artisan Chocolates makes small-batch, hand-crafted confections in Rochester, New York, using classic techniques and locally sourced ingredients. Posey’s former career in Parks and Recreation informs the company’s distinctive aim: translating taste memories into chocolate, from familiar comforts to unexpected pairings. The Rochester South Wedge shop also offers small-batch ice cream, while sister venture Posey Letterpress supplies hand-printed packaging and cards for gifts and events.
HEF North America brings together a network of surface-engineering companies that coat and treat industrial and automotive components, while also making engineered bushings and related performance products. Its North American operation spans 18 locations across the U.S., Mexico, and Canada, with millions of components coated annually for more than 500 multinational clients. The business draws on the HEF Group’s seven decades of tribology expertise and includes a Benton Harbor, Michigan, electroless-nickel facility equipped for parts up to 9 feet long and 4,000 pounds.
Heffron’s A Moment in Time Retro Design custom-manufactures 1950s-style furniture and themed spaces, including diner seating and backyard diners, for homes and restaurants. The family’s retro venture grew from Gary Heffron’s own 1950s backyard diner, and the company now combines its construction experience with custom design to recreate the look of an American mid-century diner. Its seating is built to order in the United States and can be shipped across the country and to surrounding countries.
Heidelberg Materials North America supplies heavy building materials across the United States and Canada, with more than 450 locations and approximately 9,000 employees. The business traces its heritage to Lehigh Cement Company, founded as a single-mill operation in Ormrod, Pennsylvania, in 1897, and adopted the Heidelberg Materials name in North America in 2023. Its operations include cement production and coal-ash beneficiation, including processing harvested ash for recycled use.
Founded in 1897, HEINZMANN GmbH & Co. KG develops and manufactures engine-management, turbine-control and emission-management systems for combustion engines, generators and turbines. Based in the Black Forest, the company also supplies retrofit solutions for demanding industrial applications, with systems used in thousands of installations worldwide. HEINZMANN operates as part of a global group with 420 employees and a sales and service presence in 40 countries.
Built over more than 50 years, Helen of Troy is a global consumer-products company whose brands are designed to make everyday life more useful. Its El Paso corporate office supports the company’s Beauty business and shared services, while its international teams develop products for consumers around the world.
Helios Electric LLC is a full-service electrical engineering, construction, and design firm for high-, medium-, and low-voltage power systems. Its capabilities include electrical equipment manufacturing and integration, power system design and studies, field retrofits, inspection, testing, commissioning, automation, and SCADA solutions for utility, industrial, railway, water and wastewater, aviation, healthcare, and mission-critical facilities.
Helios Pickleball grew from founder Ivy’s experience finding connection through the sport in New York City. The New York-designed brand creates pickleball paddles with a distinctive visual language inspired by Greek mythology and abstract nature, serving recreational players, competitors, and organizations seeking personalized court gear.
Founded in 2007 by Walter Szczepanski, Helios Remote Sensing Systems is a small, economically disadvantaged woman-owned business based in Rome, New York. The company is known for applying deep radar and RF engineering experience to practical remote-sensing challenges for defense agencies, research laboratories, and commercial customers.
Helium Leak Testing is the dedicated helium-leak detection operation of PTI, whose package engineers bring more than 20 years of hands-on experience in regulated industries. The company develops custom container-closure integrity systems for pharmaceutical, biotechnology, and medical-device applications, including testing under deep-cold conditions.
Founded in 1971 after Alan Heller brought Massimo and Lella Vignelli’s stackable dinnerware to America, Heller Furniture makes modern furniture and housewares that pair playful, accessible design with practical durability. The company expanded into furniture in 1998 and now works with designers including Mario Bellini and Frank Gehry, with its furniture proudly made in the USA. Heller’s designs have entered museum collections worldwide, while newer pieces such as Bill Curry’s reimagined Honeycomb shelving extend the brand’s interest in regenerative materials and adaptable forms.
HelloFresh is a meal-kit and food-delivery company that plans meals and delivers portioned ingredients with chef-created recipes for customers to cook at home. Founded in 2011 as a small project packing recipe ingredients for its community, the company says its service now spans 18 countries and has delivered more than one billion meals.
Founded in Rochester in 1973, privately owned Helmel Engineering Products is an American manufacturer known for building coordinate measuring machines in Niagara Falls, New York. Its vertically integrated operation keeps the work close to home, with engineering through calibration handled within the company for manufacturers that need dependable three-dimensional inspection.