How does a gas RV refrigerator work
Christopher Duran
Updated on May 10, 2026
An RV refrigerator works by absorption and a chemical reaction between ammonia, water, and hydrogen. The ammonia is heated then goes through an evaporation and condensation process which causes the cooling effect of the fridge. The ammonia is heated either by a propane flame or electric element.
How does an RV refrigerator run on propane?
RV refrigerators can run off of either a 120 volt electrical or an LP gas system. … When the RV propane refrigerator is operating properly the flame is spark ignited to heat the boil assembly and runs the absorption refrigerator. The flame should be a solid blue and should not bounce around.
Does an RV fridge need power to run on propane?
Although propane refrigeration does not require electricity to run, you will still need at least a 10.5 V battery power to get it on. … The main advantages of a propane RV fridge are obvious: There is no need for electricity. Food and medicine can be safely stored without power interruptions.
Does RV refrigerator work better on gas or electric?
Many agree that RV refrigerators work better on electricity, as it keeps the food fresh and cold for a longer period. On the other hand, a gas RV fridge will cool faster and stay colder even in high temperatures.Can you run a gas RV refrigerator while driving?
The short answer is: Yes! An RV fridge can be used while driving. Keep in mind there are safety concerns with running propane while driving.
How do you turn on a propane RV refrigerator?
Locate the switch for your refrigerator. This could be a button or a dial, depending on the age and type of propane refrigerator. Turn the refrigerator to the on position for the refrigerator to run on propane. If there is a light indicator, it will turn on.
Will RV fridge run off battery?
You may be asking yourself will RV fridges work without battery, and the answer, unfortunately, is no. … While the battery is mainly used to power the front thermostat and control panel, the front LEDs, and any other added features, the refrigerator is not able to run without these.
How long can a fridge run on propane?
These units are economical and don’t require an outside power source. So how long can a propane refrigerator run? Most can run nonstop for 11 days on a standard 20 pound propane tank.How long does RV fridge last on propane?
You can run an RV fridge using a 20 lb. propane tank for 280 hours, or just over 11 days.
How long does it take for an RV fridge to get cold on propane?How long does it take for a RV Fridge to get cold? It typically takes 24 hours for your refrigerator in your RV to get cold. As the fridge is an absorption style, it takes more time to exchange the heat out of the refrigerator than a typical residential fridge.
Article first time published onDoes a gas fridge need electricity?
Absorption refrigeration is all chemistry. A fuel gas refrigerator does not require electrical power at all. That said, most have the option to use electric power. RVs are the most common users of propane refrigerators and while staying in a park most owners opt to use the available electric plug and save propane.
How long will an RV fridge run on propane and battery?
Although times will vary depending on the battery and fridge, the average RV fridge will run for 8 to 10 hours with the batteries on. When plugged into shore power your house batteries will be charging so the battery will last as long as you are plugged in.
Do propane refrigerators have a pilot light?
How to Operate the Propane Refrigerator in a Camper. RV refrigerators use a combination of electric and propane gas power to operate efficiently. … This will mean lighting the pilot light, sometimes called a burner jet, which lights up the rest of the fridge burners.
Should I leave my RV refrigerator on all the time?
You don’t need to leave your RV fridge on all the time. This will not extend its life. However, before going on a camping trip, you must turn on your RV refrigerator within 24 hours. This will allow your refrigerator to cool down in time for your trip.
How do I keep my RV fridge cold while traveling?
You can help your fridge hold its temperature throughout the drive by getting it as cold as possible before taking off. Set the thermostat as low as it can go and fill any empty space with ice-cold beverages, freezer packs, or bags of ice – the colder the better!
How long will RV refrigerator stay cold?
How long will your fridge stay cool? A 12v RV fridge that has been running in an RV can typically stay generally cool for up to twelve hours, but running it as low as possible before shutting it off can add quite a bit more lasting, cold air inside.
Do I need 2 batteries in my RV?
How many batteries does an RV or motorhome have? As mentioned above, your RV coach has two separate battery systems, a 12-volt DC system and a 120-volt AC system. There’s also an automotive 12-volt system for starting the engine and running basic automotive functions, just as there is in your car.
Can I plug RV into my house?
While you can hook your RV up to a home’s electrical system, you won’t be able to run every appliance or use the electricity 24/7. You will most likely need to set your RV up to be able to connect to the standard 3-prong household plug you use at home.
Can you travel with propane on in RV?
Considerations About RV Driving with Refrigerator On. There are lots of opinions about running the fridge in a travel trailer on propane while driving. Here is one more. The short answer is Yes, you can tow with the fridge running on propane.
Why won't my refrigerator work in my RV?
The number one RV refrigerator troubleshooting tip is to make sure your coach is completely level. If your trailer, camper, or motorhome is not level, it can affect the cooling unit. … If the fridge is off, the fluid isn’t flowing. Over time sediment will build up in the cooling system, stopping its operation.
How long does a 30 lb propane tank last in an RV Fridge?
That means that a 30 lb. propane tank can run our appliances for 16 hours before running out.
How long will a 20lb propane tank run a refrigerator?
If you’re using a standard 20-lb propane tank, you can expect it to last around 11 days (non-stop) before needing to replace or refill it.
How much propane will an RV refrigerator use?
Assuming your RV fridge runs 24 hours per day, it uses 33,600 BTUs each day (1,400 BTUs per hour x 24 hours). If there are 427,700 BTUs in a 20 lb propane tank, this means the tank can power your fridge for just over 12 days (427,700 BTUs in the tank / 33,600 BTUs daily use).
How does travel trailer refrigerator work?
An RV refrigerator works by absorption and a chemical reaction between ammonia, water, and hydrogen. The ammonia is heated then goes through an evaporation and condensation process which causes the cooling effect of the fridge. The ammonia is heated either by a propane flame or electric element.
Why Is My RV fridge not getting cold enough?
Make sure that there are no obstructions. If your refrigerator doesn’t have good air flow it will not cool properly. Many models do not come with external fans behind the cooling unit. For the RVers that love the heat, we recommend installing some fans in the back to help with the air flow.
Why won't my RV refrigerator get cold?
Another common reason that you may be having trouble with RV refrigerator cooling units is if your RV hasn’t been used in a while. When the fridge is off, the chemical coolant fluid isn’t flowing, and sediment can build up, stopping operation.
Do RV refrigerator fans work?
RV absorption fridges are special because they use heat to drive a chemical cycle that creates cold. It’s a bit counterintuitive, but it works well – as long as there is proper ventilation to get rid of the excess heat. This is where the RV refrigerator fan comes into play.
Does a propane fridge use freon?
Unlike an electric refrigerator, which uses a coolant to keep the interior cold, a propane fridge relies on simple chemical reactions. The process starts with a flame fed by a propane tank, which is why this appliance is called a propane fridge.
How much electricity does a RV refrigerator use?
The small RV refrigerator ended up using about 5 kWh of power per day. Our entire battery bank is about 24 kWh. This means that nearly every day about 20% to 25% of all our usable battery power would need to go to powering the refrigerator.
How do you turn on a gas refrigerator?
- Turn the gas valve at the rear of the refrigerator.
- To start the refrigerator, turn the thermostat knob “Temp” (Thermostat) to the #2 setting.
- Push and hold “Gas” (Gas Safety Valve) button, and then…
- Press the “Spark ” (Piezo Ignitor) button continuously 5 to 10 times to light burner.
Why do RV refrigerators catch fire?
The lawsuit states that every gas absorption refrigerator manufactured by Dometic since 1997 shares common technology, common cooling unit design and common defects, including the propensity of the refrigerator’s cooling unit boiler tube to corrode, crack and expel hydrogen gas at high pressure, which can spontaneously …