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Air Conditioning Unit Hoatora and Coolers John J. Nesbitt, Inc. Holmesburg, Philadelphia 36, Pa. 11 Park Place, New York 7, N. Y. Manufacturers of THE NESBITT SYNCRETIZER Heating and Ventilating Unit, sold by John J. Nesbitt, Inc., and American Blower Corporation; NESBITT HEATING SURFACE with Dual Steam-distributing Tubes, NESBITT SERIES H HEATING SURFACE, and NESBITT SERIES W COOLING SURFACE, sold by leading manufacturers of fan-system apparatus; WEBSTER-NESBITT UNIT HEATERS (See page 1065), distributed in U. S. A. by Warren Webster & Company. Consult the manufacturers regardingfurnishing all-steel coils. NESBITT SYNCRETIZER--Series 400 The last word in heating and ventilating units for schoolrooms, offices, etc., where the continuous introduction of outdoor air is desired. For engineering data, get Publication No. 225-1; for "The Story of Syncretized Air," Publication No. 231-1. The Nesbitt Syncretizer is available with non-metaUic casing. Complete details will be supplied on request. Nesbitt Series B Thermovent For heating and ventilating auditoriums, gymnasiums, assembly halls, and similar gathering places. Publication No. 227-1. NESBITT COOLING SURFACE Series W (Water) Surface with exclu sive drain feature For air cooling and cooling and de- humidifying (with cold water) or air heating (with hot water). Construct ed of copper tubes and plate-type alu minum fins. Avail able in either con tinuous or cleanable tube type, in single sections having one to eight rows of Uncased Surface Showing Drain Header tubes deep, in three fin spacings, in eleve fin widths, and up to sixteen finned tub lengths. Sturdy galvanized casings. Fo particulars and engineering data send fo Publications No. 233. (Not available in steel, NESBITT HEATING SURFACES With Dual Steam-distributing Tubes Copper tube-and-fin surface for lowpressure applications. Perfectly adapted to close, continuous automatic control with modulating steam valves. Steam-dis tributing tubes within the condensing tubes carry the steam equally to the full section assuring UNIFORM discharge temperatures even under a throttled steam supply; eliminating temperature strati fication ; preventing tube freezing without preheaters; giving ideal system results. Cased or uncased units of many sizes and capacities. For full particulars and en gineeringdata, send for PublicationNo.240. For above advantages plus uniform distribution in i extended fin] lengths from] 80 to 128 ins., * specify Nesbitt Duplex Heating Surface with Dual Steamdistributing Tubes. Publication No. 240. Nesbitt Series H Heating Surface A lightweight, enduring, highly efficient blast-coil heating surface designed for use with steam pressures up to 200 lb gauge. Well suited to high-pressure as well as lowpressure applications. Seven types, each in eight fin widths and up to sixteen finned lengths--a total of 784 sizes from which to select. Send for Publication No. 241 for complete engineering data. 030 Air Conditioning Unit Hoatora and Coolers Refrigeration Economics Co., Inc. Canton, Ohio RECOY PRODUCTS RECOY AIR CONDITIONING UNITS of the suspended type as shown, or vertical floor type, are made for all season purposes, also for summer cooling or winter heating and humidifying. Capacities range from one ton up to any size required. Cooling and heating surface, and filter area are liberally pro portioned and blowers are of moderate speed, all to insure the highest efficiency and quiet, satisfactory performance. Bulletin "E". RECOY CONTINUOUS FIN BLAST COILS for cooling or heating are constructed of copper tubing with aluminum fins, or all steel hot dip galvanized after fabri cation and are suitable for use with any cooling or heating medium. Bulletin "F". RECOY STEEL MILL AIR CONDITIONING UNITS are for those hot spots with ambient tem peratures around 200 degrees such as crane cabs. They are complete package units including all regular air conditioning equipment and controls and in addition evaporative condensers so they may be mounted on traveling cranes where a water cooked unit is impossible. Quota tions and data on request. RECOY BLAST HEATERS have all welded coils and headers so will stand any steam pressure and remain tight for years. Coils are copper tubing with aluminum fins or all steel hot dipped galvanized after fabrication. The entire unit is suspended on the top header and coil is free to expand. Fan motors are oversize to insure continuous service and fans are guarded. The casings have liberally rounded corners and are beautifully finished in baked crinkle enamel. Quotations and data on request. RECOY LIQUID COOLING UNITS were developed for the war effort to cool coolant oil for machine tools in arsenals and engine factories. They increase tool pro ductivity as much as 300 per cent and insure greater accuracy of machined parts. However, they are equally suited for cooling any liquid such as water and brine. Standard sizes are from ^ hp to 10 hp inclusive, but other sizes are made to specified requirements. The units are complete, including controls and charge of refrigerant, ready for electrical and liquid connections. Ask for Bulletin H-42. 931