From warehouses and greenhouses to any large commercial or industrial space heated via a central hot water or steam boiler, hydronic unit heaters 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, which is why we're proud to carry Ruffneck and Modine unit heaters. Each product is listed with all the information you need to make an informed purchase: warranties, product catalogs, installation guides, photos, availability and lead times, and more.

Browse our extensive selection of hydronic unit heaters.


About Ruffneck and Modine Hydronic Unit Heaters

Modine hydronic unit heaters are some of the best in the industry. Highly efficient and versatile, Modine unit heaters also come with the option of an explosion-proof motor for use in hazardous locations. There are plenty of other options to help you customize your selection, from motor voltage and thermostats to finger-proof fan guards, custom coating, pipe hanger adapter kits, hot water control valves, and more.

Ruffneck hydronic unit heaters are heavy-duty products, designed for use in challenging environments. The FR series is frost-resistant, making it ideal for outdoor use in cold climates, while the AV series is great for space heating or liquid cooling.

At NorthStock, we've spent years building relationships with top HVAC manufacturers, and we're able to keep a large supply of products in stock and ready to ship. As a result, you'll enjoy low, factory-direct pricing and fast, free shipping on every order in the lower 48 states. Expedited shipping is available at checkout. Contact us to speak with our knowledgeable customer care team if you have any questions about hydronic heaters or other heating and cooling solutions.