Being able to have a hot water shower on your remote adventure trip is no less than a blessing! While you are fighting through tough hikes, camps, and long trails, carrying the best camping shower with you would definitely rejuvenate your spirits and your body.
Portable camping showers have recently become one of a traveler’s favorite accessories. Carrying a good quality shower with you is also recommended by experienced hikers as it will serve several purposes.
First of all, it refreshes your body when you need it the most, and secondly, it keeps you clean, hygienic and protected from any kind of infection during trips. In addition to that, these showers have high-pressure water flow and you can also use these showers for cleaning purposes.
So without any delay, let’s have a look at the guide to the best camping showers.
Camping showers are available in various types with varied specifications and applications. After considering all the important factors, trends, and reviews, here is the list of the best camping showers for you.
Top 16 Best Camping Showers 2021
The first word that comes to our mind when we see a Triton’s hot water heater is – Champ! This small, lightweight, and portable water heater is capable of delivering the most refreshing experience when you are on the road or camping.
Two 2D batteries and a standard 20 lb propane tank are all you need to operate this shower. It has a capacity of 5 liters and is quite convenient to operate. Attach a water hose to the brass connector and get your hot water in the blink of an eye.The best part is it turns on instantly and gives you hot water in seconds.
Its next most powerful feature is its steady and strong water flow pressure. It produces almost 1.5 gallons of hot water per minute and you can easily use it for camping, beach trips, or even bathing your pet.
Lastly, its showerhead has four settings i.e., off, mist, shower, and jet. You can adjust it according to your requirements and get the desired pressure and flow. Plus, you can easily hang it up. It can also stand up straight without additional support.
To conclude, it is one of the best camp showers and we highly recommend it if you spend a lot of time on the road, traveling or if you need a handy hot water shower at home. It would definitely be one of your best investments in travel accessories.
- Lightweight and portable
- Easy to operate
- Fast heating
- Constant and fast water flow
- Four settings in the showerhead
- 5l water capacity
- It might be expensive for some users
- Needs propane and batteries at the same time to operate
Camplux’s Portable Propane Tankless Water Heater is another highly recommended water heater for camping or adventure purposes. If you have decided to spend a lot of time in the woods or a cabin, this portable shower would serve you the best.
Its first outstanding feature is that it is super easy to use. It is ideal for you even if you are a novice in the adventure field or have trouble using tech-savvy products. It has basic knobs to help you out and a simple gas operation mechanism that works on a propane tank.
Hence, there is no need for electricity – or fear of power failure or unwanted risk. Connect it to the gas tank and a water supply, and it is all set. Apart from that, there are several gadgets such as connectors included in the pack to make it easier for you.
Next, it has a powerful water flow of 1.3 gallons per minute which means you will get a constant supply of water. Plus, it has advanced energy-saving technology that makes it a top choice among adventurers.
It is a highly versatile and portable water heater among the propane tank heaters. It weighs just 15 pounds and you won’t find any difficulty in carrying it in your car while you are on the road.
One other very important aspect covered in this water heater is its safety measures. It has flame-failure protection and anti-freeze regulation features. So, if you hang it outside your tent for the night, it won’t freeze and become useless, unlike other water heaters.
- Small, lightweight, and portable
- Powerful flow
- All required equipment included in the pack
- Easy to operate
- Great safety features
- Not recommended for more than 2000 ft. elevation as pressure changes affect its performance.
Mr. Heater’s F235300 BOSS-XB13 is that robust, durable, and reliable water heater that every adventurer would definitely love.
This high-performing heater and shower can release water at a powerful rate of 0.6 gallons per minute. Its other interesting features include 12000 BTU power management, scald protection, water-flow ignition, and a tap switch.
In addition to all these features, it has an inbuilt propane heating unit that will give you the hot water shower experience you are looking for..
It may look a bit expensive at first, but if you are a regular adventurer, it will definitely become your favorite travel partner in no time.
- Built-in propane element
- Protective measures
- Durable material
- 12000 BTU
- A bit expensive
- Water flow is less than other variants
- Requires battery as well as propane to operate
Ivation Portable Outdoor Shower is an affordable battery-powered option on the list. If you are looking for an easy-to-operate and accessible product, then it is unquestionably your product.
With its economical price range, it has some brilliant and simple-to-use features. Its pump and battery are housed together which provides a consistent water flow. Plus, you can easily hang its wide showerhead and use it for outdoor showers or bathing your pets.
Its lightweight body and an impressive 1.2 GPM steady water flow give it some extra brownie points. If you are going on a vacation in remote, outdoor locations, you can easily carry this water shower with you. It is a highly versatile product and would serve lots of purposes such as cleaning dishes or bathing your pets
Note – It is not a water heater, unlike the above-mentioned products. It is a water pump shower. You have to dip its pump in a water source such as a bucket or a tub (you must manually manage the temperature) and it will give you a great shower experience.
- Easy to use
- Lightweight and portable
- Steady and high-pressure flow
- The hose is a bit small
- The pump is a bit large
- Durability is not as good as expensive water heaters
The next product on our list is Kipida’s SOlar Shower Bag. As you have guessed from its name, it is a solar power water bag that heats water through solar energy and gives you a soothing hot water shower during your expeditions.
The bag has an outstanding 5-gallon water capacity and you can conveniently use it for showers or other cleaning purposes. Plus, its efficient solar panels heat up water sooner than other solar variants. Hang it outside your tent or cabin and you will get 45-degree hot water in just three hours.
Another interesting feature is its front mesh pocket where you can keep items such as soap and shampoos. Besides that, it has a temperature indicator that will show you the water’s temperature. Lastly, it is made of environment-friendly material that makes it a recommended product for every nature enthusiast.
In short, if you are looking for a highly lightweight and highly affordable shower option, this is a great option for you. Just make sure that the place you are going to have enough sunlight, and you will definitely enjoy its services.
- Environment-friendly material
- 5-gallon capacity
- Lightweight and portable
- Easy to use
- Not recommended for low-sunlight areas
- Being a solar energy heater, it takes time to heat up the water.
Gasland’s water heater is a tankless water heater that is highly safe to use as well as a great performer.
The most innovative and supportive aspect of this water heater is that it has been provided with safety measures such as a flame failure device, anti-freeze protection, and overheat protection. These smart features make it one of the safest water heaters on our list.
Its anti-freezing drain plug discharges the residual water from inside so that the heater does not get frozen at night. Plus, it has an automatic system that shuts off the gas supply in any unexpected situation. Apart from that, it automatically decreases water pressure between 2.5-110 PSI. Hence, you can call it one of the smartest products on the list as well.
Its long list of features does not end here. It has an easy to install mechanism. You can install it almost effortlessly and get an endless amount of hot water supply.
In addition to that, it has a portable design that you can carry to picnics, campings, tips, etc. You can use it for showering, bathing your pets, or cleaning purposes.
Lastly, it has 11.5% energy-saving technology. All these brilliant features make it one of the best camping showers on the list in terms of tankless showers and performance.
- Great safety measures
- Powerful performance
- Smart features
- Anti-freezing properties
- Energy saving
- There are no noteable cons in this product
If you do not want to invest a huge amount in an outdoor shower, then here is the most desirable product for you – Abestolofe’s portable Camping Shower bag. It has an outstanding 5 Gallons (20 liters) capacity and you can fold it into a really small size while packing your stuff.
The first notable quality about the bag is it’s environment friendly! It is made from eco-friendly products and is completely safe for human health as well as for nature.
Its smart PVC material absorbs solar energy and heats up the water inside the bag. Thus, you can have a hot shower in any remote location.
Next, it is a leak-proof and foldable bag that you can easily carry with you almost anywhere. It has a strong handle that you can hang on your tent or a tree’s branch. Plus, as already mentioned, its great capacity also makes it highly worthwhile.
Lastly, it is the most economic option on the list and definitely one of the best camp showers on a budget.
- Highly economic option
- Solar heating ( up to 113 degrees F in three hours)
- Easily foldable and highly portable
- Eco friendly
- Needs full sun for heating water (if you are in a cloudy region, it would take more time to heat up)
- The nozzle is a bit small.
It is a portable water heater that runs on a Propane gas tank. Its brilliant features include a water temperature control knob, hand faucet/spigot, and showerhead attachments with adjustable spray patterns.It is quite easy to set up as well. Connect it with an AC/DC adapter or the cigarette lighter of your car and get instant hot water.
Its other features include outstanding safety measures. It has an automatic safety shut off mechanism that turns off the burner when water reaches the maximum of 125 degrees. Plus, it has a water flow sensor as well as a fuse and tilt protection mechanism.
To conclude, it is a powerful and versatile water heater that you can use for all kinds of purposes and it would serve you in the best way possible.
- Powerful and efficient
- Great safety measures
- Carry case included
- Simple to use and handy features included
- Setup time is a bit longer than others
Sportneer has brought you an amazing Solar Shower bag that you can conveniently use on all your trips and get a hot water shower wherever you wish.
Being within a pocket-friendly range, it has some brilliant features for you. It has a great five-gallon capacity and offers enough hot water for a great shower. Plus, it has a front mesh pocket for keeping shampoo, small towels, or soap.
The bag has smart solar panels that efficiently use solar power to heat up the water. Apart from that, it is made from a high-quality durable PVC material. Plus, its non-toxic and eco-friendly material offer durability and top-quality performance.
Lastly, it has a strong air-mesh handle so that you can easily carry or hang the bag.
- Lightweight and portable
- Eco friendly
- No need for batteries or power
- Great performance
- Not suitable for places with less sunlight
- Durability issues
Riingoo Portable Camping Shower is a powerful shower pump that you can charge with a rechargeable 2200 mAh lithium battery as well as a vehicle’s cigarette lighter!
The shower comes with a power adaptor that you can plug into the cigarette lighter section of your car. All you have to do is turn the engine on, then connect it with a USB cable and run the shower. It is simple and innovative.
You can normally charge it with any USB port such as your laptop, charger, or car adapter. The charging of the battery takes around three to five hours and you can use it for at least forty five minutes after a full charge.
Its powerful pump gives you a consistent water flow and you can connect it to any water source to have a refreshing bath. It comes with a built-in detachable water purification filter. Thus, if you connect the pump to a river, or lake water, it will clean the water before you take a shower out of it!
Lastly, it is a lightweight (1.6 lbs) and easy to assemble device that you can conveniently carry and use during your hiking, trekking, or camping trips.
- 1-year warranty
- Easy to charge and operate
- Consistent water flow
- Built-in water purification filter
- Easy to use
- Lightweight and portable
- You cannot adjust the water flow and the pressure
- The shower has to be near a water source
- No in-built water heater
Next on our list is Kedsum’s Portable Camping Shower. It is the powerful shower pump that you have been waiting for all along and is highly recommended by campers and travelers.
It is a portable water pump that comes with two detachable USB batteries. The batteries and switch do not come in contact with water, giving you enhanced battery life.
On average, a battery will work for 45 to 60 minutes. Thus, if you have 2 fully charged batteries, you get almost two hours of working time.
The most outstanding feature of the pump is its power. It sprays water at almost 4L/min.. Besides that, it is an easy-to-operate system. You just need to submerge the pump in water sources such as a tub or a bucket, turn on the pump, and you will get a nice flow.
Lastly, its weight is just 25.2 ounces and you can easily carry it on all your adventures. To sum up, it is one of the best camp shower pumps.
- Powerful pump with great flow
- Easy to operate
- High battery life
- Value for money
- No water heater in the package
- The controls are in the submerged end and there is no way you can stop the flow while you are scrubbing
- The pipe might feel a bit small
Advanced Elements has brought one of the best portable solar shower bags for you. This innovative shower bag has lots of robust features that make it a top choice for travelers.
First of all, its bag is made from high-quality material and has four efficient layerings (reflector panel, insulator panel, solar panel, and water reservoir). This dynamic design elevates heat retention and gives you the desired performance.
Next, it has a strong rubber handle that makes it easy to carry, life, or, hang.
If you wonder why a handle is mentioned every time we mention a solar heater then you must know that five gallons of water mean almost 42 pounds of weight. A strong handle is necessary to carry this much weight. If you have a reliable handle, you can easily hang the bag upanywhere to heat up or to shower.
Apart from that, it has an extra-large filling valve that makes it way easier to fill water and has a twist-off cap. Plus, a simple on/off switch on the showerhead ensures that you have a convenient shower.
Finally, it has a temperature gauge, a side pocket, and velcro straps to hold objects such as towels.
- Efficient design
- Durable and high-quality material
- Strong handle
- Large filling valve
- Strong material and handle
- Heating might be a bit slower than in other variants
The next item on our list is also a camping solar shower bag, this time from VIGLT.
It is a portable shower bag with a double switch design. The upper and bottom switch make it very convenient for you to fill and use the showerhead. Plus, they offer a leak-proof system to the overall design.
It is made of durable material and has several promising features such as a powerful handle, reinforced plastic tube, and velcro straps. Not to forget, a front pocket for keeping small objects.
It can carry up to 5 gallons of water and has an on/off nozzle on the shower. Besides that, it has a temperature gauge, a see-through back that allows you to see water levels, and a velcro washcloth holder.
Next,is a foldable bag that takes very little space and you can carry it on all your adventures. It has a comfortable snap closure for secure mounting or hanging.
To sum up, it is great for camping, hiking, fishing, surfing, picnic, or any other outdoor activities.
- Extremely lightweight and portable
- Durable material
- No need for an extra power source
- There are no such cons in the product other than the time it takes to heat up water. It may take a long time if there is less sunlight in your expedition region.
It is a battery-powered water shower that you can operate with your car cigarette lighter or 12-V battery.
The best part about this product is that it is a complete set of handy items. It comes with a 13-foot shower hose, a water-conserving showerhead, and a high-pressure water gun. It also includes a garden sprinkler with ten outlets, two portable water bags, and a 5-gallon tank.
The most advanced feature of the product is its powerful booster mechanism. An imported pure copper brushless motor manages a steady water flow of 6 l/m and helps you in getting a desired wash or shower.
Next, it has innovative safety measures such as an automatic shut down system that stops when water is off, and an intelligent temperature controller that eliminates the chances of overheating.
Lastly, it is very convenient touse. You just have to fill it with water, connect the hose and nozzle, turn on the switch and it will be ready!
- Powerful pressure
- Safety measures included
- Easy to use
- Durable build
- Good looking
- 13-foot shower pipe
- One major con with this product is that it does not seal the lid so you cannot travel with water inside
- No insulation
Jayatec Portable Outdoor Shower Set is a remote shower pump set that is definitely a gamechanger.
It is powered by a 4400mAh battery and can work for more than 80 minutes after a full charge. It takes less than 2 hours to charge and gives you a steady water flow even if the water is limited. With a steady three to four liters per minute of water flow, you can have a quick shower as well as use it for cleaning or other purposes.
This model features IPX7 waterproofing and innovative LED lights that comies in handy when the sun goes down and you need a shower.
The one quality that separates it from other shower pump is that you don’t need to dip the pump into the water source. You can attach its separate hose pipe to the water source and the pump would suck the water out and give you a nice shower.
- Great water pressure
- LED lights
- Hook and suction cup suspension system
- USB charging cable included in the pack
- An S-hook for overhead hanging
- A bit expensive than other water pumps
Last on our list, is an innovative water pump from WADEO. This Portable Outdoor Camping Shower Bag is powered by a foot pump and is capable of delivering 15L/ 4gallons of water at a consistent pressure.
It has a press type nozzle that lets you control the water flow and enjoy the shower at your desired pressure. You can conveniently fold it into your bag and use it while you’re traveling. Its stylish and handy carry bag makes it a super compact option.
The material of the shower bag is a high-grade waterproof and leak-proof fabric. Besides that, it has a protective strap that restricts water from pouring out.To sum up, it is an economical option and if you are looking for something unique and handy.
- Compact and portable
- Durable and waterproof fabric
- Quick to assemble and use
- Less water capacity than other variants
- Cap is less durable
Factors To Consider While Choosing The Best Camping Shower
Now you know the best camp showers available in the market. The next part is choosing the most suitable and convenient one for you.
As you would have guessed from the list that camping showers come in different styles and varieties. Hence, choosing the most ideal one is no less than a challenge. To help you out here are some essential factors that you must notice while choosing the best camping shower for you.
The first thing that you should notice in a shower is its basic design.
Camp showers or remote portable showers come in various designs and specifications. You may find solar showers, chargeable showers, shower pumps, shower bags, or showers that can work on car batteries!
So, first of all, decide on your requirements. Choose the shower according to your interest in expeditions and your types of adventures.
For instance, if you will have a supply of hot water and a water container such as a bucket or tub at the place you are deciding to stay, you’ll just need a powerful shower pump. However, if you need a water container as well, you have to go for showers with containers, or even water bags.
Next, you have to check out the performance capacity and the design of the shower you want.
You should always go for a shower pump set that has a chargeable battery operated pump, a tube, and a shower. You can always check factors such as a nozzle end’s capacity, water speed, and pressure, etc.
Besides that, you should always check the mechanism of the shower such as how it starts or stops the flow, the length of the pipe, etc.
2. Size And Portability
The main purpose of any trip or natural getaway is to be minimalistic and carry the least amount of baggage possible. Therefore, when you are traveling, you definitely won’t prefer bulky equipment, no matter how useful it is.
On the other hand, carrying a water heater with either too little water capacity would be futile as well.
Water heaters with propane tanks would need more space and weigh more but are the most efficient and powerful. If you are travelling in a car or vehicle, you can carry them with ease.
Tankless water showers are quite lightweight but have to be connected to a hosepipe to supply water. If you want minimum weight, then solar shower bags are definitely a great option for you. They are almost weightless and do not take up any space.
So, we advise you to choose a shower according to your trip and your carrying capacity.
3. Heating Mechanism
One very important aspect of any water heater or shower is its heating capacity and the power source.
Camping showers use various types of power sources such as electricity, solar power, or propane tanks. If you are going to a remote place with no electricity, then an electric water heater would be of no use to you. Similarly, solar power heaters need full sunlight to heat your water.
In all such instances, propane water heaters are the best option. However, they are heavier and you have to carry a gas tank along with the heater and shower.
So, choose the one you want according to the weight and your requirements.
The efficiency of a shower depends upon its water flow rate and you must consider this aspect when you buy a camping shower.
Water flow rate means the amount of water that flows through your shower per minute. It is generally measured in gallons per minute or GPM. The more the GPM, the faster you’ll finish your cleaning or bathing.
A shower with 1 to 3.5 GPM is considered good enough. Hence, you can try the pressure out on your own and choose the best one yourself.
One exceptional quality of any remote water shower is its ease to assemble. When you’re on a hike, for example, or on a hilltop at minus temperatures, you definitely do not want to spend hours assembling a shower. Rather all you desire at that time is an easy to install and easy-to-operate device.
To solve this issue, water showers come with super easy to super complicated mounting features. Solar bags, for example, need no such preparations. Fill them with water, hang them out, and you’ll get a hot water shower.
While on the other hand, some heavier ones might even need two people but they carry more water and have a better heating capacity as well.
So, depending upon your requirements and your experience with such devices, you can choose the best camping shower for you.
Now comes one of the most essential aspects – Money.
Camping showers range from a few bucks to a few hundred dollars depending upon their performance and durability. Their capacity, power source, or heating capacity also affects their price.
If you are going on a short trip or you are a beginner in hiking, you might choose a low range option. For instance, if you are going to a sunny region, you might use a solar power heater bag. It weighs almost nothing and would give you lots of comfort in having a quick shower.
However, if you are an experienced traveler, then we recommend you to invest in a durable and powerful water shower. It would last long and give you rejuvenating experiences for a lifetime.
7. Other Factors
In addition to all the above-mentioned factors, you should also take care of these factors while buying the best camp shower for you.
- Safety Measures- If you are using compact solar or shower pumps, then small safety measures will make sure that you don’t get into any sort of trouble. However, if you use one with a propane tank, there are some factors that you must look at to ensure safety.
Temperature gauge, for example, measures water temperature and tells you if the water is hot enough or not. The auto shut off options are designed to automatically turn off the heater when the water reaches the desired temperature.
- Warranty – If you are investing a huge sum into a water heater, always make sure that it has enough warranty period.
- Environment-friendly material – Traveling is all about knowing the environment better and connecting to it. Thus, polluting the environment is always against the rules of traveling.
Hence, you should always choose environment-friendly materials (even if they cost a bit more).
Types Of Camping Showers
If you are looking for the best camping shower for your next trip, then till now, you must have known that there are lots and lots of options available. Not just the brands, there are several types of camping showers that can puzzle you.
Don’t worry, our guide has got everything you need. Here is the description of all the types of camping showers with their specifications, pros, and cons.
First of all, showers are divided on the basis of their source of power and their heating capacity. In this category, there are three types of outdoor showers which are described below –
1. Solar Heaters Showers
As the name suggests, these showers have a solar heating mechanism. They absorb solar energy and heat up the water. You have to keep the water bags in direct sunlight and within a few hours, your water will be ready. No fuel, no electricity and you will have a great hot water shower.
They are lightweight and you can carry them bags easily in your travel backpack. They have attached hose pipes that double up as showerheads.
However, they come with several cons. Firstly, as they are dependent on the sun, you can not use them in low-sunlight regions. Secondly, they need direct sunlight for at least 2 hours to reach a hot shower temperature. Thirdly, you have to carry them with water to have a shower which might become a bit inconvenient.
2. Gas Heater Showers
Gas heater showers operate on combustible gas, most preferably a propane tank. These are faster than solar operated ones and you get hot water in a few minutes. These kinds of showers are a great option if you are traveling by car and have enough space for a propane tank.
They are some of the most favored options by adventures as the tanks or heaters can be used for various other purposes such as cooking, or sterilization.
The only con with these showers is that you need a propane tank for heating the water as well as a pump (generally operated by batteries) to enjoy the shower. It becomes heavy to carry and quite inconvenient, especially if you travel solo.
3. Electricity Heater Showers
As the name suggests, these heaters operate on electricity. They are similar to gas ones in terms of performance, with the only difference that they need a power source such as a battery or direct electricity.
Their downside is that you need a power supply to operate and if you are going to a remote area with no electricity, they would be of no use.
So, now we have discussed all the types of showers depending upon their power source and heating mechanism. Now, let’s have a look at their shower mechanism, the part of the shower from where you get water.
In this category, we have three types of showers that are described below.
They are the classic showers that use gravitational force to give you a refreshing bath. Put these showers above your head and gravity will dispense water. Simple and effective!
They are the most minimalistic and most affordable types of remote showers. No extra equipment, no high-tech setup.
However, they lack a powerful water flow rate and can only offer you a limited amount of water supply. Plus, you have to hold or hang them above your head for a shower.
Pump showers are quite innovative options as they need a foot or hand pump to pressurize a water chamber. The pump creates a decent amount of pressure and you get a fast water flow as compared to the gravity ones.
They are a fine option and you can use them if you seek more pressure and want no extra electronic devices. They are simple, handy, and offer nice flow.
6. Electric Pumps
These pumps have an electric supply, generally small batteries that create powerful pressure. You can use these showers for bathing or for all types of cleaning purposes.
In these kinds of showers, you have to dip the pump into the water supply, turn on the pump and you’ll get steady and fast water pressure (until the batteries are working). If you have a great water supply such as a pond, you can have a great shower experience for a long time.
Undoubtedly, these are the best options because of their steady output and higher flow rate. But as they are dependent on batteries and electrical equipment, they are a bit tougher to set up than the gravity or pump ones.
Best Camping Showers – Conclusion
Our guide has described all the types of camping showers and given you the list of the best picks from all the categories.
As you are now aware of the huge range of camping showers and their functional properties, you have a lot of options available. You just have to fix your requirements and you will be able to find the product of your choice in no time.
If you are looking for a long term option or planning a long stay in the woods, then a fair investment in an electrical heater and an electric pump showers is definitely a good idea. An investment today would stay with you for years.
However, if you are considering a short-term solution for hot showers, then solar bags are a great option for you. Just make sure you hang them properly and within a few hours, you’ll get a great shower.
Your next adventure is calling you. Get the best camping shower for yourself, and enjoy the expedition!
FAQs on Camping Showers
Q1. Can I Drink Water From A Camping Shower Water Heater?
It depends solely on the material and guidelines of the water heater. Many solar water bags state that the water inside them is undrinkable.
So, always check the manual before drinking water from such sources.
Q2. Is It Safe To Keep A Water Shower Outside The Camp For Nights?
It also depends very much on the properties of your shower. Many camping showers have anti-freezing mechanisms that prevent the water from freezing inside the heater at night.
So, you must check the instructions carefully before you leave your system outside for the night.
Q3. What Is The Difference Between A Tanked And A Tankless Water Shower?
Tankless water showers are the ones that do not have a containing tank of their own. They receive water from a water source such as a tub, a pond, or a lake and instantly heat it up. Thus, they give you a constant hot water supply through instant heating.
Tanked water showers, on the other hand, have a limited tank attached to them. These tanks get filled with water and then, they supply you with hot water.
Tankless water heaters consume less energy as they do not need to keep the water hot in their tank for a while. They just get water, heat it up, and send it to you.