Learn Popular RV Terms & Definitions
7 Pin Electrical Connector
This provides power from your tow vehicle to your RV for the lights as well as the electrically operated brakes.
Aluminum Exterior Sidewalls
This term refers to the outside construction of your RV. It’s made up of wooden framing with an aluminum exterior and batten insulation.
An extra battery to run your 12-volt equipment.
Usually found on motorhomes. It’s a camera mounted on the back of the RV with a monitor by the driver seat. Gives you an extra eye while backing up your RV.
The large storage area underneath your RV’s floor accessible from outside storage doors.
Black Water Capacity
The amount of waste water from the toilet your RV’s black water tank can hold.
Dining area with two person seats and a table in-between.
A device mounted inside the tow vehicle that will apply the trailer brakes simultaneously with the tow vehicle brakes.
If your trailer becomes separated from the tow vehicle, this safety switch will automatically activate the brakes on the trailer.
BTU – British Thermal Unit
RV A/C and Furnace units are BTU-rated. It’s a measurement of heat that is the quantity required to raise the temperature of one pound of water 1 degree F.
Refers to the floorplan style of an RV having bunk beds.
CCC – Cargo Carying Capacity
This is your RVs maximum weight limit for personal items you add into
Framework your RV is built on. In motorhomes it generally includes the engine, transmission,
The battery in your motorhome that operates 12 volt components of the drivetrain.
Front of your motorhome where the driver pilot seat and passenger co-pilot seats are located.
Converts your 120 volt AC power to 12 volt DC power and also charges your 12 volt battery
Diesel Puller – FRED
FRont Engine Diesel – When your diesel motorhomes engine is located in the front
When your diesel motorhome’s engine is located in the rear of the RV.
This is the weight of just your RV when it’s finished being built. Doesn’t include supplies, water, fuel, or passenger weights.
DSI Ignition – Direct Spark Ignition
This term is used to describe the method of igniting the main burner on a propane fired appliance.
Your A/C is supplied through ducts in the ceiling and vents throughout the RV.
Your heat is supplied through ducts in the floor and vents throughout the RV.
Refers to an area, a concrete pad with a tank underneath the ground, where you can dump your black and gray water tanks.
This term refers to the bottom surface of your RV being closed shut to help against weather. Manufacturers will also offer additional packages that will increase the amount of seasons you can use your RV in.
Provides power to your motorhome.
Free Standing Dinette
Dining area with individual chairs and a table in-between.
Fresh Water Capacity
The amount of drinkable water your RV’s fresh water tank can hold.
When the kitchen is located in the front of your RV.
When the living-room is located in the front of your RV.
When the master bedroom is located in the front of your RV.
Type of fuel your motorhome uses. Either Gas or Diesel.
This is when an RV campsite offers a water supply, sewer/septic, and electricity.
When you live in your RV year round.
This term refers to the kitchen of your RV.
GAWR – Gross Axle Weight Rating
This is the total allowable weight on each individual axles which includes the weight of tires, wheels, brakes, and the axle itself
GCWR – Gross Combination Weight Rating
This is the total allowable weight of your tow vehicle, your trailer, the cargo in each, hitching, fluids, and occupants.
Provides 120-volt AC power to your RV. Runs on gas, diesel, or propane.
Gray Water Capacity
The amount of used water from the kitchen sink, bathroom sink or shower, your RV’s gray water tank can hold.
Gross Vehicle Weight Rating – The maximum weight your RV can be to ensure safe traveling. Includes the vehicles chassis, body, engine, fluids, fuel, accessories, passengers, cargo, etc.
Top to bottom measurement of your RV.
The connection used between your tow vehicle and your RV.
Hitch Capacity – references the towing capacity of your receiver hitch.
This term refers to your fresh water tank, gray water tank, and black water tank.
House Battery – The battery in your motorhome that operates 12 volt system within the motorhome.
From floor to ceiling measurement of the inside of your RV.
Inverter – Converts your 12 volt DC power to 110 volt AC power.
King Pin Weight
this is the actual weight pressing down on the 5th of your tow vehicle). Generall 15% – 25% of the GVW. wheel hitch(located in the back bed
This term refers to the outside wall construction of your RV. It’s made up of an aluminum frame, styrofoam, fiberglass sheeting treated with a gel-coat and is then laminated onto a
Front to back measurement of your RV.
These will make sure your RV sits level on the ground.
Usually found in Toy Haulers, this is a space above the garage or entrance door that includes
Liquid Petroleum – Another term for Propane.
This is a type of RV made to be permanently parked in an area.
Part-timers – When you travel and use your RV for more than the occasional vacation.
When the kitchen is located in the back of your RV.
When the living-room is located in the rear of your RV.
When the master bedroom is located in the rear of your RV.
The amount of sleeping spaces in your RV. RVs come with different types of sleeping arrangements – regular sized bed, hide-a-bed in the sofa, collapsible booth dinette, drop down bunk
Additional area made for each flooplan that slides-out to provide you more living space.
Sway Bar System
Designed to reduce or eliminate side to side sway movement of your trailer.
this is the actual weight pressing down on the hitch ball(located on the tow vehicle). Generally 10% – 15% of the GVW.
The maximum weight your tow vehicle can safely tow(set by the vehicle manufacturer).
This term refers to the bottom surface of your RV.
When you travel and use your RV on the weekends throughout the year.
Weight Distribution System
Takes weight from the tongue of your trailer and redistributes it to the front of the tow vehicle.
This is the distance between the center lines of the primary axles on your RV.
Side to side measurement of your RV (doesn’t include slideouts).