Best Lightweight Water Heaters in 2025

CONTINOUS FLOW – Hot showers will never be interrupted again. Enjoy continuous, on-demand hot water with an unlimited supply, when you want it without wasting any energy when not needed

SPACE & ENERGY SAVER – Its small, sleek white design saves space yet still provides endless hot water for your whole house, and no venting is required. Eco friendly unit saves energy with auto-modulation

SILENT OPERATION – One electronic switch will activate the hot water heater and it’s noise free while in use. Digital temperature display is easy to read, while the interior solid copper heating system does all the power work

HEATS FAST + SIMPLE TO USE: You’ll have warm water in seconds, boiling water in just minutes. Fill your container, place the immersion heater in the liquid, then turn on the immersion heater. It’s that simple.

MAXIMUM SAFETY: Durable burn guard protects your coffee mug, cups, and bowls ensuring the coils never touch the sides of your dishes or containers. Safely heat coffee, tea, soup, hot chocolate, and more.

TRAVEL ADAPTER: Powered with a dual voltage system, (120 V for North America, and 240 V for Europe and other regions), and includes a European adapter and travel pouch; perfect for all your domestic and international travel needs

𝐂𝐨𝐦𝐩𝐚𝐜𝐭, 𝐋𝐢𝐠𝐡𝐭 𝐖𝐞𝐢𝐠𝐡𝐭 𝐏𝐨𝐫𝐭𝐚𝐛𝐥𝐞 𝐃𝐞𝐬𝐢𝐠𝐧 - 12.8 (L)*6.1(W)*21.65(H) inches, weight-18 lbs. Compact and portable design perfect for barns, cabins, outdoor instant hot shower and road trips

𝐄𝐚𝐬𝐲 𝐈𝐧𝐬𝐭𝐚𝐥𝐥𝐚𝐭𝐢𝐨𝐧 & 𝐔𝐬𝐞 - Simply connect the inlet and outlet pipes and gas regulator that come with this portable water heater, insert 2 D-cell batteries, then you are ready to use. Low water pressure start of 3.6 PSI allows you to enjoy 2.64 gallons of water in just a few minutes

𝐏𝐨𝐰𝐞𝐫 𝐄𝐟𝐟𝐢𝐜𝐢𝐞𝐧𝐭 & 𝐄𝐧𝐞𝐫𝐠𝐲 𝐒𝐚𝐯𝐢𝐧𝐠 - Maximum power output 68,000btu/hour with 11.5% energy saving technology, you will get instant endless hot water easily wherever you are. The propane water heater exchanger and main burner are designed with advanced combustion technology to decrease gas consumption and burning noise

𝟭.𝟱𝟴𝗚𝗣𝗠/𝟲𝗟 𝗣𝗿𝗼𝗽𝗮𝗻𝗲 𝗪𝗮𝘁𝗲𝗿 𝗛𝗲𝗮𝘁𝗲𝗿 - Maximum power output 41,000BTU/Hr.The temperature raise is 109.4℉ (43℃) at its highest point and 55.4℉ (13℃) is at its lowest point of 1.58 GPM. Also, 1.58 gallons of hot water can be produced per minute at the flow rate of 1.58 GPM. Low water pressure start up, just need 3.6 PSI of water pressure to start.

𝗚𝗼𝗼𝗱 𝗳𝗼𝗿 𝗢𝗳𝗳-𝘁𝗵𝗲-𝗚𝗿𝗶𝗱 - Runs on a standard 20 lb. liquid propane tank and is equipped with an electronic ignition powered by two D-cell batteries. Can be used in a variety of scenarios: while you're camping, RVing, hunting, hanging poolside, washing your pets or horses, cleaning your vehicle, or even in your tiny home, greenhouse, or cabin house.

𝗔𝗱𝘃𝗮𝗻𝗰𝗲𝗱 𝗦𝗮𝘁𝗲𝗳𝘆 𝗣𝗿𝗼𝘁𝗲𝗰𝘁𝗶𝗼𝗻 𝗦𝘆𝘀𝘁𝗲𝗺 - With CSA certification, safe as per Canadian and US Standard. Features over-heating protection, low water flow protection, dry combustion protection, anti-freezing protection, high water pressure protection and flame failure device.

【FAST WARM UP】 This heater has 2 heat settings: 1250 and 1500 watts. Use the higher setting(1500 WATT) to raise the room temperature quickly. When the desired temperature is reached use the lower 1250 WATT setting. It is usually sufficient to maintain a comfortable temperature.

【TIP OVER & OVERHEATER PROTECTION】Automatic Overheat Protection system will shut the portable heater off when the parts of the heater overheat. In this way the space heaters for indoor use will cool down quickly to avoid overheating. Tip-Over Protection will shut off the room heater if it gets knocked over accidentally to avoid accident happens.

【UNIQUE DESIGN】All Metal Body makes it strong and sturdy to use. Made from light weight steel, it's easy-to-carry and light weight heating equipment is travel friendly and user friendly. Max flow fan pushes heat further into the room. Thermostat automatically regulates heat for consistent room temperature.

【Portable & Easy To Use】Camplux BW211 portable model has a compact and lightweight design for easy handling. Runs on a standard 20 lb. liquid propane tank and with an electronic ignition powered by 2 D-cell batteries, it’s easy to use

【Versatile Applications】 The lowest water pressure at beginning for the water heater is 3.6 PSI. This hot water powered by 2 size D batteries. No more chilly outdoor shower for off-grid and rural areas while you're camping, hiking, hunting, hanging poolside. You can also washing your pets or horses, cleaning your vehicle, or even in your tiny home, or remote cabins

【 Flow Rate & Temperature Range】 Maximum power output 55,000BTU/Hr and a temperature range of 18-95 ℉ max. Water flow rate at 1.1 GPM Min and up to 2.11 GPM Max. The water heater with Eco /Full switch, you can control the temperature easily

We recommend that all installations of units must be done by the local building and plumbing codes of the installation location and installation be done by a licensed professional.

The tankless design means you don't have to wait 30 minutes for preheating and unlimited use of hot water.

145,000 BTU high heating capacity and maximum 6.3 GPM. It is suitable for 3-4 outlet points, which can satisfy whole family. UEF over 0.81, the high energy conversion rate can effectively reduce energy loss.

ECO-FRIENDLY WATER HEATER: Save energy using less gas during the warm months with the Marey Tankless Liquid Propane Gas Water Heater; Color: White; Weight: 10.14 pounds

BATTERY POWERED: Tankless water heater starts with pulse ignition powered by (2) D batteries (not included); No cords necessary

AUTOMATIC SHUT-OFF: Multiple safety sensors, such as auto cut-off, automatic ignition, anti-dry combustion, over-pressure, overheating, flameout protection, and twin solenoid valves

We recommend that all installations of units must be done by the local building and plumbing codes of the installation location and installation be done by a licensed professional.

The tankless design means you don't have to wait 30 minutes for preheating and unlimited use of hot water.

180,000 BTU high heating capacity and maximum 8.1 GPM. It is suitable for 3-5 outlet points, which can satisfy whole family. UEF over 0.81, the high energy conversion rate can effectively reduce energy loss.

🏝️Product Parameters: Applicable Water Pressure Range: 3.0-145 PSI; Maximum Power Output: 41,000btu/Hr; Water Output Per Minute:1.6GPM/6L; Item Dimensions LxWxH: 11.42x4.9x14.57 inches; Weight: 13.3 pounds. Efficient and energy-saving, lightweight and convenient.

🏝️Excellent Performance:【Instant hot water】: Instant and continuous supply of hot water whenever you need it.【High efficiency and energy saving】: It has two combustion modes in summer and winter, and both the heat exchanger and the main burner adopt the most advanced energy-saving combustion technology, which can reduce gas consumption and noise while ensuring the continuous supply of hot water.

🏝️High Safety Security: Our propane water heater have multiple safety protection settings【Overheat Protection】: When the water temperature exceeds 167℉, the gas supply is automatically shut off.【Anti-freeze Protection】: The anti-freeze drain plug can drain the residual water and avoid freezing when the temperature is low or when it is not used for a long time.

Gas Type: LPG Liquid Petroleum Gas (PROPANE),Capacity: 18L/min (4.8Gal), 25 degrees warm water producing rate. Torque Range: 3-3.5 N.m

Working temperature:--8-45℃,Thermal input: 36KW,Thermal efficiency:≥80%,Vent Type:4.3" Flue Duct,Panel Color: White

Cover Material: Cold Rolled Sheet; Temperature rise: 25℃,Minimum working water pressure: 0.025MPa,Gas pressure: 2800Pa

CSA Certified

LED Touch Screen Computerized Safety

Flow activation

Use anytime, anywhere without electricity. The EL5 runs on a standard 20 lb. Liquid Propane tank, equipped with electronic ignition, & powered by “4 x AA” batteries.

Supercharged 37K BTUs & rated at 1.5 gals per minute with an achievable temperature range of 50–120 degrees Fahrenheit.

Low-pressure activation at 20 PSI & easily connected to a standard garden hose. CSA certified for use in the US & Canada.

💦【Approved Safety】 Safety Standard approved HOPERAN Tankless Water Heater, safe as per Canadian and US Standard. More than 6 protection methods; for example: overheating protection, antifreeze protection, flameout protection, etc.. Upgrade: Install a stainless steel fire baffle below the combustion device, which can effectively prevent sparks from damaging the pipeline below, to ensure the safety of the propane camping shower

💦【On Demand Hot Water】Fully adjustable heat and water flow. Maximum power output 41,000BTU/Hr, easily get instant and endless hot water wherever you are. Propane water heater don't need to preheat before use. As soon as you turn on the faucet, the water will flow out at the temperature you want. Low water pressure starts, requiring only 2.9 PSI of water pressure. Produce 1.6 gal of on-demand hot water per minute. ❤Note: The water heater can only be started when the water source is connected

💦【High Efficiency & Energy Saving】: With automatic ignition and flameout mode. The shower head is open, the propane water heater is auto-ignition. The shower head closed, the propane water heater auto-flameout. And has two combustion modes in summer and winter, which can effectively reduce consumption. Both the heat exchanger and the main burner use the most advanced energy-saving combustion technology, which reduces gas consumption and noise while ensuring a continuous supply of hot water

【Universal Tank Heaters Substitutes】 This RV water heater has a wide range of applications. It’s a good replacement for Suburban & Atwood's 4/6 gallons tank water heaters. The included door fits the desired 16.1 x 16.1 inch size

【Easy Install & Operate】The tankless rv water heater with a pressure relief valve built into the unit, you don't have to buy and install it separately. And it also comes with a 15*15 " door and 1 pc 6.6 feet intelligent remote controller. You can adjust the hot water temperature to get the temperature you want by simply tapping the remote control

【No More Waiting】RV Tankless hot water heaters are better than tanked water heaters. You don't need to waste 20-30 minutes waiting for hot water in the middle of the shower, so you can enjoy hot water at all times. It uses propane for heating, so there is no need to worry about running out of power in your caravan

【Replaces all RV water heaters】It has a 12.8 x 12.8 inches opening and can replace Suburban & Atwood's water heaters and other tankless water heaters. It is low noise and has good vibration resistance, which is made for caravans

【Our upgrades】Deep fire row design can improve heating sales and save gas. Built-in filters in the pipe can effectively filter particles and sand. Built-in mixing tank, no overheating of water due to brief opening and closing

【Long time bath】Deep fire row design can improve heating efficiency. It can produce up to Max 3.9 GMP hot water and has 65,000 BTU power. It can bring you hot water all the time when there is enough gas and water. There is no need to wait for the water to heat up and take a quick bath like with a tank water heater

1.【No Electricity Needed, Efficient Heating】More Efficient Kerosene Stove. The combustion chimney of the indoor portable non-electric kerosene stove is made of special metal, which ensures that the kerosene is fully burned, and the heating is faster and more efficient. The Combustion Core is Made of high temperature resistant fiberglass and cotton yarn, more durable. Our kerosene heaters have 2 wicks. Bring warmth and joy to you, your family and your friends anytime, anywhere.

2.【Safety and Energy Saving】Portable kerosene stove heater without electricity. Portable kerosene stoves do not require electric heating. Compared to electric heaters, kerosene stoves can quickly heat a room without drying it out. All You Need Is Kerosene Heater And You Will Have Plenty Of Heat. Kerosene heaters are quiet, energy-saving, smoke-free, clean, environmentally friendly, The closer the distance, the higher the temperature.

3.【Long-Lasting Heating, Multiple Protection】It can stay warm for 15-18 hours at a time. Ideal for everyday supplemental heating needs and emergency situations. Features Flame adjuster, tip-over switch, and protective safety grills. Automatic safety shut-off and push-button start make it easy to light without matches or electricity. The top is designed with a removable enamel top, which is non-toxic and environmentally friendly.

ECO-FRIENDLY WATER HEATER: Save energy using less gas during the warm months with the Marey Tankless Liquid Propane Gas Water Heater; Color: White; Weight: 22 pounds

BATTERY POWERED: Tankless water heater starts with pulse ignition powered by (2) D batteries (not included); No cords necessary

AUTOMATIC SHUT-OFF: Multiple safety sensors, such as auto cut-off, automatic ignition, anti-dry combustion, over-pressure, overheating, flameout protection, and twin solenoid valves

🔥【The maximum heat】14,000-BTU indoor kerosene heater for up to 250 square feet,Delivers efficient convection heat; portable design.

🔥【Protection】Simple matchless ignition; 360-degree protective grill promotes safety.

🔥【Fuel tank capacity】Built-in 6L tank for up to 24 hours of heat; use clean kerosene only.

Water heating solution for a point of use application

Eco-friendly tankelss water heater: Save energy using less gas during the warm months with the Marey Tankless Liquid Propane Gas Water Heater; Color: White

Battery powered: Tankless water heater starts with pulse ignition powered by (2) D batteries (not included); No cords necessary

[Safe to Use] Our tankless mini water heaters are made of stainless steel and high-quality ABS materials, which are strong, wear-resistant, rust-proof and durable. The product adopts a variety of protection, such as drying and heating protection, overvoltage protection, constant temperature anti-scald protection, overheat protection, grounding protection, etc., to make your use safer.

[Instant Heating] Our portable tankless water heater uses a 3500w high power stainless steel heating pipe. It can deliver hot water for you in about 3 seconds, saving your time. You can control the water temperature by adjusting the water flow (large/small water flow - low temperature/high temperature) and pressing the+/- button on the lower panel. (Controlled temperature: 68 ° F~131 ° F).

[Economical and Efficient] The water heater without water tank has 98% thermal efficiency. It can automatically adjust the power according to the change of water flow and temperature, which can save more energy. Only when you use it, the water will be heated to the required position, avoiding the waste of unused water at the connection.

★【Excellent Material】This tankless water heater is made of a high-quality ABS shell and cast aluminum heating package, which will not rust in long-term use and will not affect the water quality

★【Fast Heating】This tankless water heater applies a 5.5KW heating system, which provides instant and endless hot water from 30-55℃ (86-131℉) without waiting for preheating, bringing you a perfect experience of comfort and ease.

★【Easy Control】 It is equipped with a touches control panel and a LED display. You can freely adjust the temperature between 30-55℃ according to the situation through the easy-to-use touch screen

More Advanced RV Tankless Water Heater — Tankless water heaters are better than tank water heaters for continuous showering of multiple people. There is no need to waste 20- 30 minutes waiting for hot water in the middle of the shower, so you can enjoy hot water at all times.

Can Replace Any Brands' RV Water Heater — This unit can replace Suburban and Atwood's 6&10 gallons tank water heaters, as well as Girard and Furrion’s tankless water heaters, it has a wide range of applications.

Water Temp is Precisely Controlled — Temperature ranges from 95°F-123°F. This RV tankless water heater with temperature fluctuation eliminates technology that can eliminate the rising temperature to avoid scalding injuries. Staged combustion technology controls the amount of flame in summer, prevents the water from getting too hot, and saves the limited propane gas available for caravan travel.

☞【More efficient kerosene heating】The combustion chimney of the indoor portable kerosene stove without electricity is made of special metal, which makes the kerosene burn completely, and the heating is faster and more efficient. The oil heater has 6 wicks and 2 gloves.We have two options of 4.6L and 6L, please purchase according to your needs.

☞【High calorific value】The combustion efficiency of the kerosene heater is 99.8%, the calorific value is high, and the heating area is large. Has a good heat output with a maximum heat output of 10000 BTU/H (equivalent to 3000 W) and a fuel consumption of 0.25 l per hour. It can quickly heat a space of about 20-25 square meters.

☞【Energy saving and protection design】Emergency heater does not need electricity. The furnace acts as an emergency heater,