There are several reputable brands that manufacture RV furnaces, each with their own strengths and features. Here are some of the top brands known for producing high-quality RV furnaces:

1. Suburban: Suburban is a well-known brand in the RV industry and offers a wide range of furnaces for RVs. They are known for their reliable performance, energy efficiency, and quiet operation. Suburban furnaces are available in various sizes and fuel types to suit different RV needs.

2. Atwood: Atwood is another popular brand that manufactures RV furnaces. They are known for their durable construction, efficient heating, and user-friendly controls. Atwood furnaces are designed to provide reliable performance and are available in different sizes and fuel types.

3. Dometic: Dometic is a trusted brand that offers a variety of RV appliances, including furnaces. Their furnaces are known for their high efficiency, quiet operation, and advanced features. Dometic furnaces are designed to provide consistent heating and are available in different sizes and fuel types.

4. Coleman-Mach: Coleman-Mach is a well-known brand in the RV industry and offers a range of heating and cooling solutions, including furnaces. Their furnaces are known for their reliability, energy efficiency, and ease of use. Coleman-Mach furnaces are available in various sizes and fuel types to suit different RV needs.

5. Webasto: Webasto is a leading manufacturer of heating and cooling systems for various applications, including RVs. Their furnaces are known for their high-quality construction, efficient heating, and advanced features. Webasto furnaces are designed to provide reliable performance and are available in different sizes and fuel types.

When choosing a brand for your RV furnace, it's important to consider your specific needs, budget, and the compatibility with your RV. It's also recommended to consult with professionals or experienced RV technicians for further guidance and to ensure proper installation and compatibility.