H & H Heating and Air Conditioning have established themselves as the premier HVAC company in the Delaware Valley. Their mission is to ensure quality and give trusted installation and service to residential, commercial, and industrial customers and to respond to questions and problems immediately.

Haakon Industries is a globally renowned company in custom designed and manufactured air handling units for all type of building environments. They strive to provide the highest quality equipment and the most flexibility in equipment design to provide optimal solutions for their clients.

Hamel’s Air Conditioning and Heating is a small, family-owned business where customers are part of our family, not a number. We strive to provide the same level of service we would expect in our own home for each customer we serve. We can provide this level of service because we are not the biggest HVAC business in town and never will be. Instead, our focus is on an unrivaled customer experience.

At Hanson Heating & Air provide the service, repair, and install products such as air conditioning, boilers, ventilation, generators, heat pumps, zone systems, air purifiers, and high-efficiency equipment for residential and commercial locations.

Harris Air Services is a known resource for heating and air conditioning services in McKinney and the surrounding areas. They are a locally owned and operated company that specializes in residential HVAC installation, repair, and maintenance.

Harry Eklof & Associates Inc. is a manufacturer representative. They offer training services and also connect the user to the following products: Plumbing, HVAC, Bath Fixtures, Sump Sewage, Tools.

Heatcraft Refrigeration Products is a globally renowned company in commercial refrigeration, providing climate-control solutions to customers in more than 70 countries. They manufacture and service unit coolers, air-cooled condensers, condensing units, low-temperature, hot gas and electric defrost equipment, refrigeration systems, heat transfer systems, custom refrigeration rack systems, and refrigeration system controls.

As a leading provider of home heating repairs in New Jersey, Hudson Heating is a family owned and operated business, licensed, bonded and insured that offers both residential and commercial HVAC repairs, service and installation.

Herrera Heating and Air Conditioning Inc are more than just an HVAC company in Westminster – they’re partners in creating comfortable and efficient living and working environments. And as a trusted family-owned HVAC contracting company with over 30 years of experience, they pride themselves on delivering comprehensive services for both residential and commercial properties in Westminster and the entire Metro Denver area.

Hoffmann Brothers' contractors have provided reliable professional services to local communities like Nashville for over 40 years. Their experienced HVAC technicians can help with all of heating and cooling needs, including HVAC installation, repair, and maintenance services. Their team of expert plumbers are available for a variety of services including drain cleaning and inspections, water heater installation and maintenance.

For nearly 20 years, Holtzople Heating and Air Conditioning has been a leading HVAC company serving central Maryland and southern Pennsylvania, featuring star brands such as Trane, Lennox, Carrier, Bryant, ClimateMaster and more. Holtzople provides complete installation, repair and preventive maintenance agreements for residential heat pumps and air conditioners, as well as oil and gas furnaces and boilers.

For nearly 20 years, Holtzople Heating and Air Conditioning has been a leading HVAC company serving central Maryland and southern Pennsylvania, featuring star brands such as Trane, Lennox, Carrier, Bryant, ClimateMaster and more. Holtzople provides complete installation, repair and preventive maintenance agreements for residential heat pumps and air conditioners, as well as oil and gas furnaces and boilers.

Hometree exists to help homeowners keep their homes warm, safe & working by providing HVAC solutions.

Since 1962, Houk has been keeping Texans cool by providing award-winning service and the most modern, up-to-date technology in HVAC equipment. When it comes to maximum comfort, Houk is a pioneer that backs all work with a customer satisfaction guarantee.

At Howell's Heating & Air believe in providing the greatest value possible by offering first class service as well as uncompromising quality at a reasonable price. Over 40 years and a generation later, Howell’s remains true to this original philosophy and attributes its success and reputation to their great owners, for their hard work every single day.

Hugh M. Cunningham Companies offers premier sales representation to all distribution sectors of the HVAC and Refrigeration markets in the US States of Texas, Louisiana, New Mexico, Oklahoma and Arkansas.

Hunt’s Services is a heating, air conditioning, electrical and plumbing service company, which has established a reputation for quality work and dependability.

Huntsman Corporation is a globally renowned spray polyurethane foam company that serves a broad and diverse range of consumer and industrial end markets, including, transportation, home life, construction, energy and fuels, and clothing and footwear. They develop products that address customers’ needs and help provide solutions to some of the world’s greatest challenges.

Founded in 1967, Hurst Boiler & Welding Company, Inc. has been manufacturing, designing, engineering and servicing gas, oil, coal, solid waste, wood, biomass and hybrid fuel-fired steam and hot water boilers. The company also manufactures a complete line of boiler parts and boiler room peripherals and provides unparalleled turnkey after-market products and services to deliver complete installation and operation to its customers.

HVAC Erie specialize in air duct cleaning, air conditioning repair, and furnace repair in Erie, Pennsylvania, USA. They offer a full range of heating and cooling services, including furnace repair, air conditioning repair, and air duct cleaning. Their experienced technicians are available 24/7 for emergency repairs.

HVAC Philly is a full service Heating & Air Conditioning company proudly serving residences and businesses in the Philadelphia, Bucks and Montgomery county area since 1994. HVAC Philly offers same day and 24-hour emergency service, as a greater Philadelphia licensed HVAC contractor, they install and service air conditioning and heating systems.

Inland Empire Comfort Air Conditioning and Heating believe in supporting their local Riverside community members. They make relationships with their clients, making sure they are getting all of their needs taken care of. Their clients can vouch for the personal one-on-one service they receive, which is both comforting and helpful during a home repair.

Founded in 1988 and headquartered in Woburn, Massachusetts, Intac International LLC. is the publisher of Wintac, the #1 all-in-one business management software for HVAC contractors. Wintac is an all-in-one business management software for HVAC/R and plumbing companies.

Founded in 1991 in San Diego, California, INTEC Controls is a premier, worldwide provider of gas detection solutions and other peripherals to the commercial HVAC Controls, Energy Management and Building Automation markets. Their inventory includes gas sensors and detection systems, valves, damper actuators, sensors (IAQ, temperature, humidity, pressure, current), stats and interface devices for HVAC controls.

Intellihot is an energy company dedicated to advancing energy efficient technology and solutions. Intellihot designs, manufactures and assembles tankless water heaters for residential, commercial and industrial applications. Their products include the most advanced tankless water heater for commercial applications.

ITI supports apprenticeship and advanced career training for union workers in the sheet metal industry throughout the United States and Canada. Located in Fairfax, Virginia, the ITI produces a standardized curriculum supported by a wide variety of training materials free of charge to apprentices and journey-level workers who work in the following specialized disciplines: Architectural Sheet Metal, Building Information Modeling,& HVAC Service.

Since 1919, Intertherm has been an integral part of improving the comfort of manufactured homes. They are the only heating and cooling manufacturer to be certified in Demand Flow Technology.

Established to serve wholesale distribution, iO HVAC Controls offers unique products from multiple sources for a variety of applications. From wireless relays to fresh air ventilation controls, the company's solutions are designed to be easy to install, cost-effective and profitable.

Iowa Precision Industries is a leader in automated HVAC coil lines, duct fabrication systems, seam closers and corner inserters – a company with a rich history that has the experience and proven know-how to develop systems meeting the specific production goals of customers – worldwide. The Fabriduct(R), ProFabriduct(R), Ductomatic, Cornermatic(R), Whisperloc(R), and Elbowmatic machines are the industry’s finest products.

Irr Supply Centers, Inc. is a renowned distributor of Plumbing, Heating, Cooling, Electrical, and Refrigeration products serving a wide range of customers throughout Western/Central New York and Northern Pennsylvania.