From warehouses and greenhouses to any large commercial or industrial space heated via a central hot water or steam boiler, industrial and commercial hydronic PTAC units are a safe, reliable choice for creating a lot of heat in a short period of time. Clean, quiet, and durable, these hot water unit heaters offer a variety of heat exchanger types with horizontal and vertical airflow designs and several fan styles, and you can choose a model to mount on the wall or ceiling.

Commercial and industrial hydronic unit heaters have to be efficient, reliable, and cost-effective. We carry hundreds of models of hydronic unit heaters, so you can find the right one for your application. Browse our extensive selection of hydronic unit heaters from the industry's top manufacturers.

About Hydronic Unit Heaters

Manufacturers like ModineRuffneckSterling, and Beacon Morris think of everything when designing hydronic hydronic unit heaters for commercial and industrial applications. With years of experience in developing HVAC solutions for specialized environments, these industry leaders engineer for energy efficiency, reliability, safety, easy maintenance, and user-friendliness.

We provide all the information we have about all our hydronic unit heaters, including lead time, product literature, and more. Optional accessories and features are listed with each steam or hot water unit heater, so you can easily add compatible parts to your order. This is designed to help you make informed decisions about your commercial or industrial hot water unit heater purchase, and if you have any additional questions, you're welcome to contact us.

  • Modine hydronic unit heaters feature quiet operation, exceptional energy efficiency, and a variety of options, including explosion-proof motors for hazardous environments. Choose finger-proof fan guards, hot water control valves, custom coating, and pipe hanger adapter kits to further customize your selection. 

  • Ruffneck heat exchanger hydronic unit heaters are known for their durability. These heavy-duty units are made to withstand the most demanding environments with 14-gauge steel cabinet construction, plated cap screw fasteners, and high corrosion resistance. They're engineered to be easy to maintain, with parts that can be easily removed without disturbing the electrical connections or heater mounting arrangement. 

  • Sterling steam unit heaters are available in horizontal and vertical models. The HS horizontal series features totally enclosed motors with optional explosion-proof motors. Output ranges from 8,030 to 35,900 Btu/Hr among the Serpentine units and 18,000 to 360,000 Btu/Hr among the header-type horizontal units, which can operate with hot water or steam. The Sterling VS vertical series is available in 15 sizes for applications requiring downflow air delivery. 

  • Beacon Morris hydronic PTAC units come with a 10-year warranty on the heat exchanger, flue collector, and burner. Both horizontal models (HB series) and vertical models (VB series) are suitable for steam or hot water installations. Customize your hydronic unit heater with optional OSHA fan guards, steam pressure control, or strap-on water control. These units are commonly used in warehouses, stores, garages, factories, and workshops. 

At NorthStock, we've spent years building relationships with top HVAC manufacturers like these, and we're able to keep a large supply of products in stock and ready to ship. As a result, you'll enjoy competitive pricing and fast, free shipping on every order to the lower 48 states. Contact us to reach our knowledgeable team if you have any questions about commercial and industrial hydronic unit heaters or other heating and cooling solutions.