SIGMA COACHAIR

Heating, ventilation, air conditioning, air filtration, and air purification equipment for road, rail, air, and water vehicles, and parts, fittings, and accessories therefor, namely, HVAC units, refrigeration air cooling apparatus, evaporative air cooling apparatus, humidifiers, dehumidifiers, air purifications units, air cleaning units, and air heating systems comprising boilers, heat pumps, heat exchangers, furnaces, thermostats, radiators, radiant heat panels, registers, solar photovoltaic panels, and solar thermal collectors

Installation, repair, and maintenance of air-conditioning, filtration, and air purification systems