RV Furnace Exhaust Port

Most RV’s, except the very smallest RV’s have a rv furnace onboard. I’m sure that some of them probably even have two, but most RV’s have one and the furnace has an exhaust port that you can usually find on the side of the RV.

How to Identify and Protect Your RV Furnace Exhaust

Most RVs, except the smallest models, come equipped with a furnace, and many larger RVs even have two. The furnace exhaust port, an essential component, can typically be found on the side of the RV. If you’re not sure what you’re looking for, this guide will help you identify the exhaust and explain its role.

Key Points to Remember:

1. What is the RV Furnace Exhaust?
   Nearly all RVs with a furnace have an exhaust port that vents the combustion gases outside. This is a crucial part of the RV’s heating system and is usually located on the side of the RV.
2. Furnace Exhaust Location
   The exhaust port is typically a small vent that is easy to spot on the exterior of your RV, often near the base or on the side. It helps safely expel heat and gas produced by the furnace inside your RV.
3. Mud Daubers and Your RV Furnace Exhaust
   Mud daubers (a type of wasp) are attracted to the furnace exhaust. These insects build nests from mud, and the exhaust vent often serves as an ideal place for them to create their nests. If you notice mud debris around the exhaust area, chances are it’s mud daubers at work.
4. Signs of Mud Dauber Activity
   Mud daubers leave behind a mess of mud on the RV’s side as they go in and out of the exhaust vent. This is a clear indicator that they have built a nest inside. Over time, their nests can obstruct the vent, compromising your furnace’s efficiency and safety.
5. How to Prevent Mud Dauber Nests
   While some RV owners install a mud dauber screen to prevent these pests, you can also temporarily cover the furnace exhaust with clear packing tape. However, a more permanent solution would be to invest in a specifically designed mud dauber guard to keep your furnace vent clear.

Conclusion: Protecting Your RV Furnace

Understanding the role of the furnace exhaust and recognizing the potential issues caused by mud daubers is essential for maintaining your RV. Regularly check the exhaust vent for any signs of nest-building and clean it as needed. Installing a mud dauber screen can help protect your RV furnace from blockages and keep your heating system running efficiently.

Here is a picture that clearly shows the RV’s furnace exhaust. You should be able to locate one on almost any RV that you purchase, provided it has a furnace :