railings to provide your employees a safe work place

Temporary Boiler Rental: The Differences Between Watertube And Firetube Boilers

You normally don't recognize the significance of hot water until you no longer have access to it. Thankfully, if you do not have a permanent boiler installed, there are many temporary boilers that are portable, and will do the trick. Regardless of whether you need a temporary boiler for residential, commercial or industrial purposes, understanding the differences between a watertube and a firetube boiler can help you make a more informed decision.

Watertube and Firetube Boilers Are Complete Opposites

Although both watertube and firetube boilers essentially provide the same results, they are complete opposites in regards to their operation design. Their differences make them suitable for different projects, and determining which type may be best for you can be quite difficult.

There are two different types of watertube boilers: O and D; however, they both operate in the same way. Watertube boilers stream water within tubes that are heated by the byproducts of combustion. In comparison, firetube boilers heat the water up with tubes that contain heated gas. Although the difference may not initially seem substantial, it actually has a huge effect on the entire system. Firetube boilers will require more piping and tubes than watertube boilers. Watertube boilers will stream water through just one tube.  

Unique Advantages of Each System

Watertube boilers can handle higher operating pressures than firetube boilers (up to 5,000 psi) and are able to emit a greater steam output and higher steam temperature of up to 1,050 degrees Fahrenheit, as they may have superheaters integrated into their design. These boilers are also typically safer by design, and are more durable. In addition, since watertube boilers handle a limited amount of water supply at a time, they are more capable of handling and dealing with fluctuations. They have a better turndown.

Firetube water boilers offer unique advantages as well. These types of temporary boilers typically require less maintenance in comparison to watertube temporary boilers, are easier to repair due to the accessibility of the boiler's firesides and can handle a larger water volume although they typically take longer to start up. Firetube boilers are able to handle a sudden increase in load better than watertube boilers, which are rather restricted in terms of the water volume that can be handled. These boilers are also smaller in design most of the time. This makes them a lot more convenient, as they do not take up a lot of space. The smaller design also makes firetube water boilers a lot easier to install. 

The Rule of Thumb to Follow

Since both watertube and firetube boilers possess unique advantages, determining which type is best for you can be a rather difficult task. Most professionals recommend firetube boilers for projects that involve constant and steady loads and watertube boilers for varying loads; however, it is still important to factor in the unique variables pertaining to your project. For example, if you have a limited amount of space available, watertube boilers may be an inconvenience. On the other hand, if the boiler must be capable of handling higher operating pressures, then you'll have to cross firetube boilers off the list even if the project involves constant and steady loads. 


Rental temporary boiler may also differ in terms of the features and accessories that they come with. Although understanding the differences between watertube and firetube boilers is crucial in making an informed decision, you should still consider speaking with a full service boiler system provider in order to obtain a better understanding of the design and properties that are offered by each boiler. Also, don't forget to read more and carefully scrutinize the rental terms and conditions before signing the dotted lines.