NovaFlex manufactures flexible ducting, hoses, extruded thermo-plastic ducts, adapters, PVC pipping, water and steam heaters, couplers and adapters. Designed for superior flexibility, for material handling, woodworking, welding exhaust, high temp., custom OEM applications and more.

NovelAire provides innovative indoor air quality solutions to Original Equipment Manufacturers (OEMs) serving the residential, commercial and industrial markets of the Heating, Ventilation and Air Conditioning industry. Serving hundreds of OEM accounts worldwide, NovelAire has attained a reputation for innovation, flexibility, and superior product quality and customer service.

nVent RAYCHEM is a provider of heat-trace management systems for infrastructure, industrial, commercial and residential buildings, with operations globally. They help customers enhance productivity and reduce their costs by simplifying installation and minimize downtime during operation.

NYC HVAC Contractor provides expert residential and commercial HVAC services across New York City, USA. From AC installation and heating repair to energy-efficient system upgrades, their certified team delivers fast, reliable service with unmatched professionalism and attention to detail. They are a licensed and insured HVAC company committed to fast, efficient, and high-quality air conditioning and heating services.

Oakwood Homes, a Berkshire Hathaway company, has always built, sourced and stayed true to what's local. By leveraging resources and partners right here at home, they can deliver true luxury in homes at every price point - for people in every stage of life.

Oasis Heating and Air Conditioning is a heating and air conditioning company in Milwaukee, WI. They are committed to providing their customers with the most reliable customer service possible. They specialize in HVAC installation, repair, maintenance, and water heaters. Their team comprises highly trained professionals who are experts in their field and will always strive to provide customers with the best service possible.

With the Occupational Safety and Health Act of 1970, Congress created the Occupational Safety and Health Administration (OSHA) to ensure safe and healthful working conditions for workers by setting and enforcing standards and by providing training, outreach, education and assistance. The OSH Act covers most private sector employers and their workers, in addition to some public sector employers and workers in the 50 states and certain territories.

Ocean Plumbing and Air provides high-quality residential plumbing, as well as drain cleaning, sump pump, and water heater services. They are a business owned and operated in the local community by Miami Plumbing Professionals. They provide both residential and business customers with a wide variety of heating, cooling and plumbing services.

Ohio Heating and Refrigeration (OHR) provides commercial and residential HVAC, boilers, building automation, commercial refrigeration, fabrication, and food service equipment.

Oklahoma Chiller Corporation is a commercial and industrial HVAC company with offices in Tulsa and Oklahoma City. In addition to mechanical and HVAC services, Oklahoma Chiller offers building automation services and equipment rental services.

Since 1822, Oneida Royal furnaces have been engineered for home heating comfort and efficiency. Designed for performance and built to last, they are top performers in home heating with innovative design features that will deliver years of dependable heat to your home.

Optimum Energy’s patented software and engineering expertise has helped customers reduce energy use in heating and cooling systems, the largest consumer of energy in buildings, by up to 50%. Their solutions combine technologically advanced HVAC optimization software with powerful cloud-based data analytics and world-class engineering support.

Family owned by Dave and Kathy Ignasiak, Orchard Hill Mechanical offers 25+ years of experience as a full featured residential, commercial, agricultural, and industrial mechanical contractor.

Ordine's Air Conditioning And Heating Inc. stands out in the heart of Tampa Bay, Florida, as a distinguished family-owned and -operated AC company with a rich heritage spanning over 30 years and three generations. They pride themselves on their reliability, expertise, and customer-focused service, ensuring customers' heating, ventilation, and air conditioning needs are met with the highest standards.

Nestled in the heart of Holiday, Florida, Ordine's Air Conditioning and Heating, Inc. has established itself as a premier air conditioning contractor dedicated to keeping homes and businesses comfortable all year round. With a wide array of services including AC installation, repair, and tune-ups, their experienced team ensures the cooling system operates at peak efficiency.

Oxbox HVAC is a value‑focused residential and light‑commercial heating and cooling brand under Trane, offering affordable air conditioners, heat pumps, air handlers, and coils. They recently launched a low‑GWP R‑454B refrigerant split‑system line, highlighting their shift toward more sustainable, eco‑friendly HVAC solutions.

Pack HVAC are dedicated to provide top-notch heating, ventilation, and air conditioning (HVAC) solutions to ensure optimal comfort and air quality for homes and businesses. Their skilled team specializes in a full range of services, from routine maintenance and quick repairs to new installations and system upgrades. They understand that each home and business has unique cooling needs, which is why they offer customized solutions.

Paradise provides heating and cooling solutions and is based out of the USA.

Patterson-Kelley serves the commercial heating industry with the most respected products in the field. They provide Commercial Boilers, Commercial Water Heaters, Fabricated Systems, Commercial Solutions, Heating Solutions, Engineeering Solutions and much more.

Through experience, technology and innovation, PB Heat, LLC continues to be a top manufacturer in the hydronic heating industry with the Peerless® brand. When it comes to installing a boiler system for your customers, you want to provide the best value. That value starts with a top-quality Peerless® boiler as the foundation.

Peck & Weis provides the best full service HVAC, plumbing, and electrical contractor services to customers. Their award-winning team offers the highest quality products and service to ensure customers home or business runs smoothly and safely.

Pennco's hydronic heating products, designed for residential and commercial buildings, have earned a reputation for exceptional value, high performance and dependability. Built with high quality components and standards, Pennco gas and oil-fired boilers are manufactured by the company's dedicated workforce in the U.S.A. to ensure that customers get the very best in home heating comfort.

Perfect Temp Heating and Cooling is one of the best HVAC contractors in Minneapolis, MN, USA. At Perfect Temp, their commitment is to provide customers with the best possible service experience goes beyond just honoring a warranty or showing up when called upon.

‍Performance Heating is the best resource for industrial heating equipment and service. They provide a wide variety of thermal fluid heaters, steam boilers, water tube boilers, pressurized hot water heaters, heat recovery systems, and steam generators to the US & Canadian markets.

Peterman is a family-owned residential heating, cooling & plumbing company with offices in Indianapolis, Columbus, Muncie, Bloomington, and Lafayette, Indiana. It specializes in heating & cooling repair & installation, along with plumbing services, drains & sewers.

PFE Corp. offers complete sales and service for all brands, makes, and models of residential and commercial HVAC equipment. Whether one needs an upgrade, a full system replacement, or routine maintenance, they handle it all.

Pickrel Brothers is one of the Midwest's providers of pipe, valves, fittings, plumbing, heating and industrial supplies. They also provide boilers and hydronic equipment, heating and cooling coils, unit heaters, water softners, plumbing fixtures and much more.

Pinnacle believes in the old-school business principles of trust, reliability, and quality and has assembled a portfolio of companies that operate with integrity and a community-focused mindset.

Plumbing Medic is ready to help with any type of heating and air conditioning job in Gilbert. They’re also able to offer comprehensive plumbing services throughout Maricopa County.

Since 2001, Powell Heating & Cooling has been the premier provider of heating and air services in Tippecanoe County. With over 30 years of combined experience, their team is dedicated to delivering exceptional service and unparalleled expertise. As a family and locally owned business, they pride themselves on their commitment to the community, offering reliable and prompt solutions for all HVAC needs.