
Unit Heaters
- Wide range of sizes and output ranges allow you to provide as much or as little heat as you need, where you need it
- Vertical throw unit heaters have fin and cone attachment options that help you customize heat distribution for your application
- Easily controlled by a thermostat and usually the only moving part is the fan motor
Unit Heaters use air forced through a steam or water heat exchanger (coil) to heat a space, coming in horizontal throw or vertical throw versions in a large variety of sizes. They are often used in larger spaces including warehouses, gyms, garages, or showrooms and mounted from the ceiling.
Request a quote for Unit Heaters
Please contact us for questions, quotations and inquiries for unit heaters.
Vertical Unit Heater

Call or email us to discuss your project requirements and ask us any questions. Knowing as much of the following information as you can before you call will help us serve you better:
- Are you replacing an existing unit heater? If so, what is the make and model?
- Are you looking for a horizontal or vertical throw unit heater?
- Do you have a desired heat output range?
- Are you using steam or hot water? What temperature? What operating pressure?
- What do you expect the entering air temperature to be?
- Do you require any specific safety or motor options? If so, which?
Wait for Keystone to prepare a formal quotation for you once we have the necessary information.
Send us your purchase order referencing our quotation number.
Wait until product fabrication has been completed and for your new unit heater to arrive. We can ship anywhere in Canada and the United States. Either send us your courier account for shipping, or ask us about prepaid & charge shipping options.
Horizontal Unit Heater

Contact Us
Do you still have questions? Are you looking for pricing information or to place an order?
Do you have questions about Unit Heaters?
I have been using my unit heater with steam and am switching my system to hot water, can I use the same unit heater with the changed system?
Often yes, as many steam unit heaters are hot water compatible, though some changes will be necessary especially on the outlet side. Feel free to ask us about your specific application.
How are unit heaters usually mounted?
Typically, unit heaters are installed from the ceiling using the mounting holes built into the units.
Does a change in steam pressure affect the heat output of my unit heater?
Absolutely. There is a direct relationship between pressure and temperature of saturated steam so the lower the pressure, the lower the amount of heat available to transfer into the air with the coil.