Unitary Products HVAC is a term used to refer to heating, ventilation and air conditioning (HVAC) systems that are integrated into one unit. Unitary products come in a vast array of shapes and sizes, from wall-mounted air conditioning units or central heaters to larger systems that provide both cooling and heating. Unitary products are designed to be energy efficient, reliable and cost-effective while providing the highest level of comfort. Whether you are looking for a simple system to cool a single room or a complex network of units to heat and cool your home, Unitary Products offer something for everyone.