• RV Life and Living

How Can I Provide Unlimited Hot Water To My RV and Travel Trailer?

Campers, today we're going to look at options to increase the length of time you can have hot water in your RV Shower. The problem is the standard Camper Hot Water Heater only holds 6 gallons. These heaters are either electric or propane, so the time to make a tank of hot water ranges, but 10 minutes is a good benchmark. The problem is that these hot water heaters are not tankless or on-demand hot water heaters.

If you're not familiar with these names, a tankless or sometimes referred to as an on-demand hot water heater has no storage tank. These tanks heat the cold water supplied to the unit instantly up to the maximum temperature, usually around 130 f. The most efficient way for these units to heat the water is with either natural or propane gas. You will find electric models available. However, my experience with them is that you need a large 30 to 50 amp breakers and wiring or a dedicated 240-volt outlet or circuit to provide the necessary power to heat the water.

So, how can we provide unlimited hot water in our RV or Travel Trailer? The best, most efficient way to offer this unlimited hot water is to purchase an On-Demand Hot Water Heater. This method means that the gas hot water heater produces hot water only when a faucet is opened and calls for water. This Wall Mounted Water Heater is possible of producing hot water for up to 3 or 4 bathrooms, depending on the size of the unit you purchase. This wall mounted water heater will also offer you a BTU rating of the output of the unit. Keep in mind these can range wildly. This unit is the best alternative for an unlimited RV Water Heater.

The reasons why this is the Best Water Heater choice for your RV or Travel Trailer are the following items:

  • Efficiency – only produce hot water when it's needed. There is no storage tank to hold water before its needed.

  • Mounting Location – You can purchase this wall mounted water heater as an outdoor installation unit. This option means that this RV propane water heater mounts outside your trailer, so you don't need to install venting through your trailer's interior.

  • Fuel Type – The best water heater is a propane water heater, as they are the most efficient means to heat the water. Also, your RV or Travel Trailer has propane service readily available for you to use. You could connect this directly to your camper's system.

  • Outdoor Design – These camping hot water heaters are designed to be mounted outside in the elements. The best tankless water heater for your RV will be based on your needs and usage. However, you need to keep in mind the amount of gas the camping hot water heater will eat up. Some of the large domestic units will require a ¾" supply line, so you don't want an outdoor tankless water heater with that requirement.

  • Sizing of the Best Tankless Water Heater – You should size your unit by adding up the faucets and showers. However, we're talking about an RV or Travel Trailer, and let's be realistic. No one ever uses a faucet when you're in the shower. There's just not enough water pressure. With this fact, no can purchase the smallest outdoor propane water heater that will cover your shower's needs. Even the smallest best tankless water heater powered by propane will provide much more hot water than you will need to take that never-ending shower, or at least until the propane runs out.

  • Connections to the Water Lines – Connecting your camping hot water heater doesn't have to be complicated, especially today. Most RVs and Travel Trailers are now using a water piping called PEX. This tubing is a flexible plastic piping that is easy to work with. You can even purchase fittings called "Shark Bite"Push Fittings at your local hardware store to just push onto this ½" Pex Pipe. With this in mind, once you've located and mounted the camping hot water heater, you need to find a location that you can tap into for the water lines. For my trailer, the drain lines work perfectly as I have a hot and cold line. I can then reinstall drain valves with "T" fittings to simplify my winterization process.

  • Pricing – The Outdoor Propane Tankless Water Heater can vary widely in price by the unit's size. However, these smaller camping hot water heaters tend to be the smallest size option that you can find. We've come up with some options for you to review later in the post. The range in price is enormous, from $250 to $1000. This price also depends on the name brand where the best water heater manufacturers ask more for their products. Sometimes just the name recognition is the reason for the price increase of the RV Propane Hot Water Heater. Keep in mind that your average 6 gallons Atwood RV Water Heater will cost you around $500.

  • Alternate Design – You can also purchase portable hot water heater units designed with an outside shower head attachment. This style is handy if you need to bath the children outside to keep the dirt from your trailer inside. These portable hot water shower options are convenient. Still, they may require slightly more thinking to adapt the piping if you want the portable hot water shower to supply the water to the entire trailer.

  • Electrical Connections – Another great advantage of the best tankless water heater and the portable hot water shower is the electrical connection is a simple 110v plug. Just plug it into a ground fault outlet to stay safe. This outlet can be at the campground pole or your trailer. This 110v plug powers the camping tankless water heater ignition system and the inducer motor for the burner assembly. The camping tankless water heater doesn't draw a large load, so you will be acceptable to connect it to your trailer if that is the route you want to take. I find it is easier to connect this outdoor propane tankless water heater to the campground circuit.

Now we've looked at some of the fundamentals of the wall mounted water heater that you can use as a camping tankless water heater, thereby replacing your 6-gallon tank with an unending supply of camping hot water. Even your partner with long hair can now take a complete shower and get all the soap out. This RV propane water heater is the perfect solution to that long day of biking or hiking.

So, there are many sizes and manufacturers of outdoor propane tankless water heater options today. We've put together some options for you to consider. These models could be the best water heater alternative for your RV or Travel Trailer.

Portable Hot Water Shower:

Portable Outdoor Propane Tankless Water Heater, 1.32GPM/5Litre Capacity, 6-IN-1 Multiple Protection, 7 More Usage Scenarios, Low-Pressure Startup, Black, RV Propane Water Heater


FORUEE PERFECT COMFORT FOR FAMILY Potable Hot water Shower is just what you need at your RV, Lake House, Cabin, or Beach. This unit is designed for easy operation in any location. Just install two each D-Batteries, connect the gas line that includes a certified regulator, connect a garden hose with only 2.5 psi pressure, and you are good to go. This best water heater for use at your Camper or RV holds a 4.1 out of 5 stars rating on the Amazon Platform. It is the perfect tool to supply never-ending hot water to your RV or Travel Trailer.

Price: $167.77 Size: 5L/1.32GPM

This 1.32 GPM rated wall mounted hot water heater will supply the needed hot water many applications, including outdoor showers with the included and attached shower head and hose. This camping hot water heater is ideal at your campsite, cabin, to wash your pets, boat, or to wash the kids before entering the tent for the night. This portable hot water shower is the perfect solution for a lack of hot water.

This Portable Water Heater Shower is the perfect camping tankless water heater. It comes with all you need to connect and use the unit to produce never-ending hot water. The certified regulator and gas hose, shower head and shower hose, Shower Head Holder, Dust Cover, Handle, Wrenches, and Garden Hose Connectors are all included to hook and speak.

Six different safety systems support portable Water Heater Shower. It contains an oxygen depletion safety shut-off switch, flameout protection, over-heating switch, thermal protection, anti-freezing switch, and a mini and open designed to help prevent excessive surface temperatures.

Outdoor Wall Mounted Water Heater Options:

Camplux Pro On-Demand Camper Tankless Water Heater,6.86 GPM Outdoor Propane Gas Tankless Water Heater with Advanced High Capacity Flow Control, Residential Propane Gas Water Heater for 3-4 Persons Whole House


The Camplux Pro On-Demand Tankless Hot Water Heater is an excellent alternative if you are looking to drastically increase the amount of hot water available inside your RV or Travel Trailer. This Outdoor mounted tankless hot water heater will supply you just under 7 GPM. This amount is enough to do an entire house with 2 to 3 bathrooms. Just think, your RV showerhead uses around .5 GPM of hot water, so you should have no trouble enjoying an endless shower. This best water heater holds a 4.1 out of 5 stars ranking on the Amazon Platform.

Price: $499.99

  • The Camplux Pro offers you multiple layers of protection for you and your family. It is CSA Certified, anti-freezing protection, flame failure protection, overheating protection. This heater will heat automatically when the outside temperature is lower than 40℉(5℃).

  • The money-saving design with a maximum power rating of 180,000btu/hour. The Camplux gas tankless water heater only activates with a max energy factor of .82 when using propane gas. The low NOx emissions are suitable for environmental protection at 9.5ppm. Energy-efficient and environmentally friendly, what more do you want in your RV Propane Tankless Water Heater.

  • Easy installation is so convenient that you can have 6.8 GPM of never-ending hot water in minutes. This model includes a digital remote control with 3.3 feet of cable so you can have the perfect flow control.

Rinnai V53DeP Tankless Water Heaters, V53DeP-Propane/5.3 GPM

Visit the Rinnai Store

Rinnai is an industry leader when it comes to tankless wall hung water heater and wall-hung boilers for heating your home. With all of this experience, they provide you with the industry-leading products that will keep you warm on a cold winter night while taking that never-ending hot water shower. This model is intended for outdoor mounting and use.

The Rinnai Wall Hung Tankless Water Heat holds a 4.5 out of 5 stars rating on the Amazon Platform. It is also an Amazon Choice for "tankless water heater propane outdoor."

Price: $555.60

This propane wall hung water heater will produce 5.3 GPM of never-ending hot water while being one of the most energy-efficient and reliable products on the market. While this model is rated at 5.3 GPM, Rinnai has serval models available to just under 10 GPM.

  • This model is designed to provide unending hot water for your entire family. The enclosure measures- 7.9 D x 14 W x 21.8 H inches. Additionally, This model is designed for propane use specifically (natural gas options are also available) and for outdoor installation only.

  • Keep in mind that this unit is rated for 5.3 GPM. However, actual flow rates may vary depending on the groundwater temperature at your location.

  • Another great feature is the Control-R 2.0 mobile app that offers you features such as timers and schedules to set and adjust throughout the day. This same application allows you to set the system into vacation mode remotely.

  • This Rinnai Product Comes with a Residential Factory Warranty. The product warranty will cover the heat exchanger for 120 months, Labor for 12 months, and parts for 60 months.

  • This Rinnai Tankless Water Heater is Efficiency packaged in a compact design that helps to conserve water, use less energy, and reduce the unit's Coe2 emissions. You will save 40% of the energy compared to traditional hot water tanks. Their view is you only need to heat the water when you need to use it.

  • When you purchase this Rinnai Tankless Hot Water Heater, you also purchase 100 years of experience and product development. This reason is why they are the #1 selling tankless water heater product in North America.

  • Items like the Smart Technology and WiFi monitoring help you always control and get the most out of this energy-efficient water heater. Additionally, every part of the Rinnai Tankless water heater can be replaced quickly to repair as a cinch. The average life expectancy for the Rinnai Water Heater is approximately 20 years compared to the eight years on a traditional water tank.

The bottom line is that if you want never-ending hot water in your RV or Travel Trailer, you need to change your hot water heater's style. The six or even 10-gallon water heaters you typically see in your RV don't have the capacity you need.

The outdoor Propane Tankless Water Heater is the solution that will allow you to take unending showers while doing laundry or washing dishes. These On-Demand Hot Water Heaters operate at the peak level of efficiency because you only heat hot water when a faucet calls for it.

We are RV Life and Living. We strive to supply you with the best possible information on various topics center around your RV Travel Trailer and the lifestyle. We are always looking for new products and places to go so that we can pass it on to you.

We have more information available on our website at www.rvlifeandliving. Head over to the site and see how we can make some of your decisions easier while still broadening your horizons.

Recent Posts

See All

What RV Are Made By Thor?

Thor Motor Coach is responsible for producing many different RVs, so I thought that I would go ahead and list some of the ones that I think are the best off here. What are RVs made by thor Motorcoach?

What Camper Van Equipment Do I Need?

Living the RV or camper van life requires careful planning as well as a good deal of coordination. To help with this, I often find that gadgets and devices can save space and make life a lot easier oh

What Camper Van Is Best For Europe?

When it comes to vacationing across Europe, one of the best ways to explore and save money is to use a camper van. Campervans due tend to be efficient in Europe as most RVs would be too large for many