Free Shipping
On Items Over $200
/ No Sales Tax
Except Illinois Orders
Welcome:  | Contact Us
Call Us: (866) 554-4328
Quick Search
Related Articles
INDUSTRIAL PROPANE UNIT HEATER BUYING GUIDE: How to Pick the Perfect Industrial Liquid Propane Unit Heater. Use this guide to find the right LP unit heater for your industrial application. Learn about heat exchanger and venting options so you can ensure you get the best heating solution.

Industrial Liquid Propane Unit Heater Buying Guide

How to Pick the Perfect Industrial Propane Unit Heater

Product Expert
Industrial Liquid Propane Unit Heater Buying Guide

You might be familiar with propane as a common fuel for barbecues, but it's also a very effective fuel for heating your factory, large warehouse, or other industrial application.

Before you go too far, though, keep in mind that industrial liquid propane unit heaters are less likely to be in stock than industrial natural gas unit heaters. This means they often have longer lead times and higher prices than their natural gas counterparts.

If you need your LP industrial heater quickly, we strongly recommend purchasing instead a natural gas industrial heater and an NG-to-LP conversion kit. The conversion kits are relatively simple to install, allowing you to get the equivalent of a standard LP industrial heater in much less time, and often for less money too.

For those of you looking to stick with the standard industrial liquid propane unit heater, here's what you need to know to find the right one.

Choosing a Heat Exchanger Material
In many cases, you will have an option of choosing between two heat exchanger materials, aluminized steel or stainless steel.

Aluminized Steel
Aluminized steel is the standard material used for heat exchangers and is known for its ability to reliably transfer heat over may years of use. However, it is prone to corrosion, so some industrial applications may be better suited for stainless steel heat exchangers.

Stainless Steel
Stainless steel is a stronger, more expensive option that comes with two benefits. The first is that it will typically last longer than an aluminized steel heat exchanger, as it is able to withstand more stress over time. The second is that it can better handle corrosive elements found in factories and similar environments. If your unit heater will be exposed to corrosive chemical fumes or excessive moisture, stainless steel is the way to go.

Choosing a Venting Style
Industrial liquid propane heaters will need to be vented to the outdoors to prevent carbon monoxide and other combustion gasses from building up inside your work space. These unit heaters offer two primary styles of venting to choose from depending on your building’s architecture and your personal preference.

Power Vented

Power Venting
Rather than relying on the hot combustion gasses to naturally rise up and out of your space, power vented unit heaters use a fan to help push exhaust to the outside. This fan-assisted method allows you to vent either vertically through the roof or horizontally through the wall.

While power venting is a great option for many applications, it does rely on the air inside your space for the combustion process. This means you will not only be venting air you’ve already heated to the outside, but negative pressures can be created by drawing indoor air through the unit heater without replenishing it. This, in turn, can cause unwanted air leaks in your walls, doors, and/or windows.

Shop for power venting and an aluminized steel heat exchanger

Shop for power venting and a stainless steel heat exchanger

Direct Vented (a.k.a. Sealed Combustion)
Direct Venting align=

In small, tightly sealed spaces, a unit heater will quickly exhaust the air available for combustion. In such situations, a direct vented unit heater is optimal. This type of venting will draw outside air in for combustion, which can also increases overall efficiency, since you’re not exhausting air you've previously heated.

More importantly, you will want to use direct venting in environments containing a high concentration of airborne particles or even a small amount of combustible airborne particles. Since the intake air in direct vent systems is drawn from outdoors, you don't have to worry about these dangerous particles getting pulled into the heater and potentially causing a large explosion.

Shop for direct venting and an aluminized steel heat exchanger

Shop for direct venting and a stainless steel heat exchanger

High Efficiency Options
With the invention of direct venting has come dramatic improvements in unit heater efficiency. While not all direct vented unit heaters have efficiencies over 90%, there are high efficiency options with both aluminized and stainless steel heat exchangers. If you're looking for a way to save money in the long run, this is a great option for you.

Shop for high efficiency and an aluminized steel heat exchanger

Shop for high efficiency and a stainless steel heat exchanger

Still not sure? Give us a call at 866-554-4328 for expert help, or click below to see all our Industrial LP unit heaters!

View All Industrial Liquid Propane Unit Heaters

Sign Up
Be The Expert: Receive Weekly How-To Tips & Specials