HVAC systems and components for use in heating and cooling entire buildings or large areas of buildings, namely portable or stationary heating systems comprising heaters or heat exchangers for use in residential, commercial or industrial applications; heating systems comprising heating units and conduits for the use in thawing of ground; air purifying units for domestic, commercial and industrial use; fluid coolers for circulating cooled fluid for use in cooling buildings and curing concrete; fluid cooling systems comprising fluid coolers, heat exchangers and conduits for circulation of cooled fluid in the cooling of buildings and curing of concrete; air conditioning systems namely air conditioners or cooling units for use in building environmental conditioning and cooling applications; heating systems comprising heating units, heat exchangers and conduits for circulating heated fluid for use in building environmental conditioning and heating applications
Environmental Control Apparatus