Supply and Exhaust Fans

Remove Fumes and Hot, Stale Air with Exhaust Fans – Then Bring in Fresh Air with Supply Fans

Supply and exhaust fans include Wall Fans, Roof Fans, and HVSU’s (High-Velocity Supply Units). Wall exhausters and roof ventilators, also known as exhaust fans, are specially designed to remove hot air, stale air, fumes, and odors from industrial spaces and are installed in the wall or roof of a building. HVSU’s are generally installed in the wall of a building and are designed to bring fresh air into a building thanks to their high-velocity air flow. Ventilation in a warehouse often involves a combination of rooftop exhaust fans and side wall supply fans. By installing these types of products you're able to reduce the overall temperature, bring in fresh air while expelling the old, and keep your employees comfortable, healthy, and working hard. Remove smoke, condensation, fumes, and more with our total ventilation solutions. Consult our Recommended Air Changes per Hour document for the number of air changes specifically recommended for your type of facility. Wall propellor fans are perfect for general ventilation and are designed for efficiency and economy. Suggested uses include commercial installations such as warehouses, schools, hospitals, parking garages and industrial uses such as process plants, wastewater treatment plants, and manufacturing facilities. These propeller fans are rugged and dependable and are available in a wide selection of sizes and performance. These fans can be arranged for supply, exhaust, or a combination of both. These fans are offered with a wide selection of accessories to complete a well-balanced and specifically engineered air moving system. The belt-drive model is available in sizes from 18 inches to 84 inches and is designed for quieter operation and lower initial cost. The direct-drive model is available in sizes from 7 inches to 70 inches and require less maintenance, offer longer operating life, increased efficiency, and reduced operating cost. Most belt drive models are equipped with a variable pitch motor pulley which allows fan speed adjustment where desirable. The pulley may be opened to reduce fan speed and thus decrease air flow. Optional accessories for these fans include inlet hoods, discharge hoods, and mounting flanges. Upblast rooftop exhaust fans are powerful ventilators designed for long life, low maintenance, and all-weather performance. They are designed to discharge vertically so that air velocity seals the opening against rain and snow while the unit is in operation. Models are available that specifically address the following installation requirements: • Roof systems of shopping centers, wholesale warehouses, hotel atriums or any other place where building codes require the removal of smoke and heat by power roof ventilators. • Fan assembly must be located above the roof – they are constructed for rugged industrial service. • Fan assembly can, or must be, installed in the roof system. • System is specifically needed for power venting the combustion by-products of a fire. • Motor and drive components can be recessed into the roof curb. • Situations where the installed fan will be difficult to reach for periodic maintenance. • Operate in hostile environments where elevated temperature or contaminated air is present. Additional accessories for upblast rooftop exhaust fans include safety disconnect switch, pre-fabricated roof curb, magnetic latches, galvanized damper doors, automatic heat and smoke venting, spark resistant construction, protective coatings, inlet and outlet guards, duct connectors, safety chains. HVSU’s (High Velocity Supply Units) are a type of air handling unit used in HVAC systems. It is designed to supply high-velocity airflow to a specific area or space within a building and is typically installed in the wall of a building. The primary function of an HVSU is to deliver fresh air at a high speed to effectively distribute heating, cooling, or ventilation to targeted zones or rooms. These models include a wall housing, supply damper, bird screen, and rain deflector hood. Proper fan placement insures sufficient air turnover, adequate air velocity, and even air distribution. For example: o Place exhaust fan on opposite wall of a loading dock door. Only run exhaust when dock door is open. o If no dock door is present, position supply fans on the opposite wall of exhaust fans. Supply fans should be on the north side of the building so as not to bring in heat from the sun. o Use roof exhausters in conjunction with supply fans to remove warmer air, fumes, and vapor. o If using a heat producing machine, place a roof exhauster directly above the machine to dispel heat while also ventilating the whole building through supply and exhaust fans. Our solutions experts are happy to visit your facility and make recommendations for a total facility solution or a single problem area. Did I mention we also install and service everything we sell? Review our preferred supplier brochures and give us a call today!