At Apollo, their customers are at the core of everything they do. They understand the importance of reliable heating systems in cold climates and the impact they have on the well-being of individuals and the efficiency of businesses. That's why they are dedicated to providing superior products, exceptional customer service, and continuous innovation.

IAQmatters is a joint initiative of heating, ventilation and air conditioning (HVAC) manufacturers in Europe and the Middle East, which provides solutions to ensure a healthy indoor climate.

IFC Certification Ltd is a UKAS accredited and internationally recognized provider of high quality customer focused independent third party certification. IFC Certification Ltd is also a Notified Certification Body for certificating products for CE Marking under the Construction Products Directive.

International Accreditation Forum (IAF) is the world association of Conformity Assessment Accreditation Bodies. Its primary function is to develop a single worldwide programme of conformity assessment, which reduces risk for business and its customers by assuring them that accredited certificates may be relied upon.

Maitz Home Services is listed as an essential business and are OPEN. They take extraordinary precautions to assure the safety of the employees and the clients.

Mitsubishi Heavy Industries, Ltd. delivers innovative and integrated solutions across a wide range of industries from commercial aviation and transportation to power plants and gas turbines, and from machinery and infrastructure to integrated defense and space systems.

The National Fire Protection Association (NFPA) is a trusted and respected fixture in the lives of safety professionals across the globe. As a self-funded nonprofit, the association strives to help save lives and reduce loss with information, knowledge, and passion. More than 10,000 volunteers make up the more than 250 technical committees responsible for publishing NFPA codes and standards.

The North American Electric Reliability Corporation (NERC) is a not-for-profit international regulatory authority whose mission is to assure the reliability and security of the bulk power system in North America. NERC develops and enforces Reliability Standards; annually assesses seasonal and long‐term reliability; monitors the bulk power system through system awareness; and educates, trains, and certifies industry personnel.

Qolsys Inc is a pioneer residential and commercial security and smart-home manufacturer. They provide smart thermostat, video monitoring, energy management and home automation.