boiler room

Protecting non-enclosed boilers from freeze damage is vital. One way to do this is to use an enclosure, which can be built around the boiler, piping, and any auxiliary equipment mounted on a truck or trailer. 

Even with such protection, external drains and pipes require insulation and heat tracing for protection. 

Read this article to learn efficient ways to protect rental boiler equipment from damage brought about by the freezing winter.

Why Is Boiler Protection Important?

When it comes to winter, frozen water can be a significant hazard. It is not uncommon to have more than five hundred thousand water main breaks nationally. If a frozen water line ruptures, it can cause a substantial amount of damage to your home, car, sidewalks, and more.

Even the loss of a single business day is bad for any company, and the fact is, a frozen water line can indeed shut down a business for a day. If a frozen water line ruptures, it will freeze your pipes. This can cause a lot of damage to your rental boiler equipment and property.

The good news is that you can avoid this possibility entirely with the proper protection.

How to Protect Your Boiler From Freezing

In order to keep your rental boilers safe from freezing, you must first look at what kind of system you have and how to protect it.

  • Truck-Mounted Boilers

If you’re using a truck-mounted or trailer-mounted system, you have a significant advantage over a building-mounted system. This is because you can build a simple structure to protect the equipment from freezing.

All you need to do is find how the unit is heated. This is going to be the temperature sensor of the unit. There should be a sensor that controls the boiler, and it should be equipped with a temperature gauge to display the internal temperature. This will indicate whether or not the unit is hot enough to use. 

If the unit is not hot enough, you must heat the unit with a gas-powered or propane heater. You can do this by wrapping the unit in solar blankets. This will make it easier for the unit to retain heat.

Another way to keep your unit hot is by installing a controlled thermostat. This will prevent the unit from freezing.

  • Building-Mounted Boilers

The thing with building-mounted boilers is that they’re subject to different types of weather conditions, so it will be harder to defend against freezing weather.

You can insulate the gas and water lines to avoid freezing. In addition, you can insulate the unit itself, preferably with spray-foam insulation. Finally, you can wrap the unit in heat-trapping blankets to keep the heat in and protect the unit.


Rental boilers have plenty of uses, but it’s important to remember that they’re subject to freezing temperature like any other outdoor equipment. For your equipment to last for a long time, you must protect it from the freezing temperature.

The best way to secure your unit is to make sure it’s warm enough to operate. If it isn’t, you can insulate the gas and water lines and wrap the unit in blankets.

Regardless of the type of boiler you have, you can save a lot of money by protecting it from freezing temperatures. When temperatures are freezing, you can end up with a broken boiler. Following these tips will reduce the risk of that happening.

For boiler hire services in London, get in touch with London Climate Hire. We are experienced HVAC specialists providing boiler chillers, heaters, generators, and more. Call us for an instant quote!