## Where is the model number on my RV furnace?

The silver colored data plate with black printing will be located on the right side of the furnace combustion chamber assembly as you look at the appliance. The model number will be located on the data plate and will begin with “NT”, “GT” or “DD”.

**Where is the model number on Atwood water heater?**

Inside that door, on the combustion housing there will be a white specification sticker. On that sticker you will find the model and serial number. The model number will begin with either a G or E. The serial number will begin with a “9” and will be 11 or 13 numeric digits long.

### Are RV furnaces interchangeable?

Camper furnaces are directly interchangeable with RV furnaces. We have Atwood furnaces as well as Surburban, so no matter what unit needs to be replaced in your RV, we have it.

**How many BTUs do I need to heat my RV?**

One rule of thumb for calculating BTUs needed to heat an RV is to estimate 1,000 BTUs per linear foot of the rig. So, a 30,000 BTU furnace can adequately heat a 30-foot trailer.

## Is Atwood and Dometic the same?

Atwood is now Dometic They expanded the business by developing the “universal rubber door bumper” which put an end to door rattles in early automobiles.

**Will any thermostat work in my RV?**

Some RV thermostats are heat-only, meaning they can only work with RVs that have heating systems — not heating and cooling systems. Other thermostats are heating and cooling compatible. Make sure you’re looking at thermostats that are compatible with what your RV has.

### How many BTU heater do I need?

For example, a 300 square foot room typically requires 7,000 BTUs to maintain a comfortable temperature, while a 1,000 square foot room requires 18,000 BTUs. A simple formula to determine your heating needs is: (desired temperature change) x (cubic feet of space) x . 133 = BTUs needed per hour.

**How do I know if I have a 1 or 2 stage furnace?**

To know whether you have a single-stage or multi-stage system, check the number of wires leading into different terminals of the thermostat. A multi-stage system will have lots of wires to the thermostat whereas a single-stage system has only a maximum of two wires.

## How do I find out what year my furnace is?

Look at the first four digits of the serial number once you find it. The first two digits can be the week of the year that the unit was manufactured, with the third and fourth number indicating the year. A serial number starting with 0193, for example, may have been made the first week of 1993.