The Ultimate Guide: What Propane Heater Should I Buy for My Trailer?

When it comes to keeping your trailer warm and cozy during the colder months, choosing the right propane heater is crucial. This comprehensive guide will provide you with in-depth information on the top propane heater options for trailers, their technical specifications, and the factors to consider when making your purchase.

Catadyne Heater: A Vent-Free Solution

A Catadyne heater is a vent-free wall-mounted propane heater that offers a cost-effective and easy-to-convert solution for trailer owners. These heaters typically have a BTU output ranging from 8,000 to 20,000 BTU, making them suitable for small to medium-sized trailers. However, it’s important to note that Catadyne heaters are not recommended for use in enclosed trailers while sleeping, as they can pose a risk of asphyxiation due to the lack of ventilation. If you choose to use a Catadyne heater, ensure that you have proper ventilation and install a CO2/O2 monitor to ensure the safety of you and your passengers.

Forced-Air Heater: The Safer Option

what propane heater should i buy for a trailee

For enclosed trailers, a forced-air heater is a safer choice as it vents the exhaust outside, reducing the risk of asphyxiation. These heaters typically have a BTU output of 35,000 to 42,000 BTU, making them suitable for larger trailers. Forced-air heaters often come with complete kits, including propane tanks, racks, regulators, chargers, thermostats, and batteries, simplifying the installation process. Look for models with a laser-cut box and exterior venting for optimal safety and efficiency.

Mr. Buddy Heater: Portable and Safe

The Mr. Buddy heater is a clean-burning propane heater that is safe to use while sleeping. With a BTU output ranging from 4,000 to 18,000 BTU, it’s suitable for small to medium-sized trailers. The Mr. Buddy heater is also highly portable and easy to use, with an automatic shut-off feature that turns off the heater when tipped over or when the oxygen level is low, ensuring your safety.

RV Propane Furnace: A Reliable Choice

RV propane furnaces are a popular choice for trailers, with a typical BTU output of 30,000 to 35,000 BTU. The Atwood 8535 and Suburban SF-35 are two recommended models that can be mounted vertically, making them an ideal fit for trailers. These furnaces are designed specifically for RV and trailer applications, ensuring reliable and efficient heating performance.

Technical Specifications to Consider

When selecting a propane heater for your trailer, consider the following technical specifications:

BTU Output

The BTU (British Thermal Unit) output of a heater determines its heating capacity. A higher BTU output means the heater can heat a larger space more efficiently. For a trailer, a 30,000 to 42,000 BTU output is generally recommended.

Safety Features

Look for safety features such as automatic shut-off, tip-over protection, and oxygen depletion sensors. These features ensure that the heater turns off when there is a risk of fire or asphyxiation, keeping you and your passengers safe.

Installation Requirements

Consider the installation requirements of the heater, such as venting, electrical, and propane connections. Ensure that you have the necessary tools and skills to install the heater safely and efficiently.


If you plan to use the heater in different locations, consider a portable model that is easy to transport and set up.

By considering these technical specifications and the unique features of each propane heater option, you can make an informed decision on the best propane heater for your trailer.


Choosing the right propane heater for your trailer is essential for maintaining a comfortable and safe environment during your travels. Whether you opt for a Catadyne heater, a forced-air heater, a Mr. Buddy heater, or an RV propane furnace, be sure to carefully evaluate the BTU output, safety features, installation requirements, and portability to find the perfect solution for your needs.

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