Best 30 Gallon Gas Water Heaters in 2026

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

Endless On-Demand Hot Water; Consistent hot water when you need it that never runs out; Continuously monitored water temperature and controlled flow rates ensure efficiency and consistent performance within 1 degree of selected temperature

Save Space; EcoSmart tankless electric water heaters are 90% smaller than traditional tank heaters; may be installed on wall or at point of use; Dimensions 11.5 x 8 x 3.75 inches

Save Energy; EcoSmart tankless electric water heaters are 99% thermal energy efficient; Only heats water when called unlike a tank heater that maintains water temperature even when not being used.

External adjustable digital thermostatic control with LED display (+/1 degree accuracy

Durable Copper immersion two heating elements, field Serviceable.Self-modulating power control

Simple installation – 1/2 NPT adapters included; side 1/2 inch Compression water connections

HOLDRITE WATER HEATER RESTRAINT STRAPS: Water heater earthquake/seismic restraint kits secure your water heater in the event of seismic activity

WHAT IS INCLUDED: The QuickStrap system includes (4) straps, (2) J-clips, (2) 3/8 inch carriage bolts, and (2) 3/8 inch hex nuts

CAPACITY: This galvanized steel strap supports water heaters up to 80 gallons and features the QuickLink system which allows for full adjustment from the front side of the water heater

Original Design: Tankless hot water heater only heats when necessary to conserve energy; For the latest in non-condensing technology and a cleaner layout that speeds up service and installation, check out our new RE160eN model

Never Run Out of Hot Water with this Compact Tankless Gas Water Heater: Non-condensing tankless hot water heater from Rinnai is only the size of a small suitcase and fits in a wide variety of spaces, but provides up to 6.5 GPM (5 fixtures at once)

Smart, Durable Design: Enhanced scale detection helps prevent serious, long-term damage to unit; Includes 15-, 5-, and 1-year residential guarantee for heat exchanger, labor, and parts, respectively; See Controlr module for WiFi control (not included)

Endless Hot Water: Enjoy unlimited hot water flow throughout the house; compact, durable, and easy to install; professional installation recommended

Energy and Space Efficient: Space-saving design conserves energy as it heats only when necessary

Optimal Water Pressure: High-performance up to 5.3 GPM hot water flow rate for a powerful, constant stream

ON/OFF Dial Control with adjustable digital temperature display

Self-modulating power control

11kW Model Flow Rate: up to 2.68 GPM

No More Wait for Hot Water - Point of use 4 gallons mini tank water heater provides instant hot water where you need it with fast recovery, reducing standby loss. Thermal efficiency up to 99%

Easy Installations - Dimensions 14.5"W x 14.5"H x 12.9"D compact design, can be wall or floor mounted under sink / counter, plug into a standard 120V outlet, no special wiring required. Nominal current 12amps

Adjustable Temperature - Thermostat with 3 temperature level settings, range from 50°F to 149°F with high temperature limit protection, also a freeze mode to prevent tank from freezing

Installation Guide. We recommend that all installations must in accordance with the local building and plumbing codes of the installation location, install the hot water heater by a licensed professional plumber.

Instant Hot Tankless Water Heater. Camplux advanced 6.86 GPM high capacity natural gas tankless water heater delivers 6.86 gallons per minute of on-demand endless hot water. It is suitable for 3-4 outlet points, which can satisfy whole family.

Easy Installation. It won't take up your indoor space, keeping your home more airy and having a more comfortable living experience. The tankless water heater includes digital remote control with a 3.3 feet cable for convenient flow control.

Original Design: Tankless hot water heater's Circ-Logic technology offers recirculation patterns that match your habits; For the latest in non-condensing technology that speeds up service and installation, check out our new RE160iN model

Never Run Out of Hot Water with this Compact Tankless Gas Water Heater: Non-condensing tankless hot water heater from Rinnai is only the size of a small suitcase and fits in a wide variety of spaces, but provides up to 7.5 GPM (5 fixtures at once)

Smart, Durable Design: Includes 12-, 5-, and 1-year residential guarantee and 5-, 5-, and 1-year commercial factory warranty for heat exchanger, labor, and parts, respectively; See Controlr module for WiFi control (not included)

Original Design: Tankless hot water heater only heats when necessary to conserve energy; For the latest in non-condensing technology and a cleaner layout that speeds up service and installation, check out our new RE199iN model

Never Run Out of Hot Water with this Compact Tankless Gas Water Heater: Non-condensing tankless hot water heater from Rinnai is only the size of a small suitcase and fits in a wide variety of spaces, but provides up to 9.8 GPM (6 fixtures at once)

Smart, Durable Design: Enhanced scale detection helps prevent serious, long-term damage to unit; Includes 15-, 5-, and 1-year residential guarantee for heat exchanger, labor, and parts, respectively; See Controlr module for WiFi control (not included)

CSA Safety Standard -CSA safety standard approved tankless propane water heater,flame failure device, anti-freezing protection, over heating protection to ensure the family safety. Automatically decrease water pressure between 3.6-110 PSI. The anti-freezing drain plug can discharge the residual water to avoid freezing in cold areas or in case of long time no use. The propane hot water heater will shut off automatically when high water temperature protection over 176 °F.

Lightweight Portable Design-Compact size and weights 23 lbs for easily carry. Hang it using the mounting bracket on the top/back of the gas water heater. It only takes you a 15 minutes to install the propane water heater.

Energy Saving-Compact and light weight structure with 11.5% energy saving technology.The propane gas water heater exchanger and main burner are designed with advanced combustion technology to decrease gas consumption and burning noise.

☼ Endless Hot Water: Imagine you are the last one in your family to take a shower before heading out for the day. You turn on the faucet and the water is freezing cold. Too bad you don’t have an Airthereal Electric Tankless Water to provide endless hot water on demand with no preheating, temperature fluctuations, or running out of hot water in the tank.

☼ Save Space: That water heater in the basement or utility closet takes up a ton of space. This wall-mounted water heater uses 90% less space than a traditional hot water heater with a tank.

☼ Save Energy: Water is only heated when you need it, not stored in a hot water tank. The self-modulating temperature technology only uses energy to heat up water while you are using it to save up to 50% on water heating energy compared to a typical tank water heater.

3.18 GPM Instant Constant Water Heater -Camplux 3.18 GPM tankless water heater natural gas delivers 3.18 gallons per minute of on-demand endless hot water ensures constant comfortable instant hot water for 2-3 persons whole house. 3.18-GPM heater is activated by water flow rather than water pressure; Minimum activation water capacity rate: 0.65 GPM-4.8 GPM; Maximum input rating: 82,000 BTUs; Water connection location/size: Bottom/0.5-inch NPT.

Convenient, Easy Installation -The tankless water heater uses standard 1/2" BSP water fitting and gas inlet. The water heater comes with1/2 " BSP female to 1/2" NPT male gas connector adapter then you want hook this water heater to natural gas pipe directly.It also comes with 2.3" horizontal vent pipe,ensures efficient power ventilation. You can take Camplux customized wall thimble-WT236 for perfect indoor use.

Modern Design,Easy Operation -Trendy and modern design with unique white glassy front panel，easy to control the water temperature with LED touchscreen (Fahrenheit and Celsius switch optional).The compact size on demand water heater saves more space than traditional tanks.

【MULTIPLE PROTECTIONS】：HOTaitai propane tankless water heater can automatically shuts off gas supply when flame goes out accidentally and ignition is unsuccessful. Anti-freezing protection, the drain plug can discharge the residual water inside to avoid freezing in cold areas or in case of long time idle. This portable water heater has high temperature protection, if water temperature over 167 °F, the unit will shut down automaticlly.

【QUICK CONNECT GAS INLET】: Easy to install gas pipe by one hand, with more safety for preventing any gas danger at the same time. And this portable propane water heater has compact size and folding handle allow for convenience to carry. With the portable handle, you can hanging it vertically into a hook or using the mounting bracket on the top/back of the gas water heater.

【CSA CERTIFIED】：The gas quick fittings-CSA approved, to make sure no gas leaks risk when connection and simplify the connection without tools, install by one hand.

【1500W Powerful & Safety Protection】The 1500W pool heater for above ground can heat up five gallons of water in minutes.The thermostat control of pool heater will turn on or off circularly and automatically to maintain the water temperature when water temperature reaches a certain level.

【Rust Proof 304 Stainless-steel Guard】This above ground pool heater power cord is made of PVC skin which is not easy to leak. The quality is safe and stable. The bottom drainage design adopts high-temperature and wear-resistant material for drainage, which is not easy to melt and prevent accidental damage. The immersion heater adopts a stainless steel protective shell which has a solid structure and high bending strength. Below the protective hole, the heat is released faster.

【Smaller Size & Portable Use】The pool water heater is small in size and easy to carry during travel, heating 5 Gallons of Water in Minutes Bucket Heater (How to use: Please make sure the immersion heater is fully immersed in water, and then connect the 120v/110v power supply. Equipped with a digital LCD thermometer, after heating for a period of time, put the probe into the water to test the water temperature.)

2.64 GPM Instant Hot Water -Camplux high capacity 2.64 GPM propane tankless water heater delivers 2.64 GPM on demand endless hot water ensures instant hot water for any small homes, cabins or apartments. On demand water heater only heats the water when you need it and no waiting for preheat.

6-IN-1 Multiple Protection- Flame-out protection, anti-freezing protection （manual drainage needed）, over-heating protection, air flow pressure switch protection to ensure the safety. Safe electronic ignition system, plugs into standard 120V electrical outlet with UL-listed cord.

Easy Installation -The propane water heater uses standard 1/2" NPT water fitting and gas inlet. Comes with 2" horizontal vent pipe,ensures efficient power ventilation. Minimum activation rate: 0.65 GPM; Maximum input rating: 68,000 BTU; Water connection location/size: Bottom/0.5-inch NPT. You will need a gas regulator ( Camplux model KR-106A )＆1 pc 5/8" NPT male to 1/2" BSP female gas connector adapter if you want to hook this water heater up to a propane tank.

Compact designed 12 gallon electric water heater. Provides instant hot water at point of use. 6-year limited warranty on tank.

Durable glass-lined heavy gauge carbon steel tank that tolerates high temperatures for years of trouble-free service.

Immersed screw-in heating element transfers heat directly to water, offering maximum recovery efficiency and direct, 98% heat transfer. Maximum temperature capability of 160 degrees.

【Smaller size and better performance】It is only 1/4 the size of a 50 gallon tank water heater, yet it produces approximately 5.1 GPM of hot water through 120,000 BTU for both bathroom and kitchen hot water demand. The highly integrated components also provide greater safety from water pressure surges without the need to install an expansion tank.

【Fast and endless supply of hot water】The heat exchanger quickly heats the water to a maximum of 140℉ in a short time, and the hot water is quickly piped through to the shower and tap. No need to wait for the water temperature to heat up slowly like a tank water heater. After that it continues to operate at approximately 5.1 GPM for 40 minutes, which is enough time to produce almost 200 gallons of hot water.

【Stable and comfortable temperature】Benefiting from the calculation and control of the heating power 1000/s by the chip, the temperature difference of the water can be precisely controlled within ±2°F.

Gas Type: LPG Liquid Petroleum Gas (PROPANE), Capacity: 12L/min (3.2Gal), SIZE: 13.2"(L) x 5.7"(W) x 24.4"(H). Torque Range: 3-3.5 N.m

25 degrees warm water producing rate, Gas pipe: G 1/2", Water Inlet: G1/2'', Water Outlet: G1/2'', Vent Type:4.3" Flue Duct, Minimum working water pressure: 0.025MPa, Gas pressure: 2800Pa

Working temperature:-8-45℃,(Max water temperature:75℃), Thermal input: 24KW Thermal efficiency: ≥80.6%, Temperature rise: 25℃

CSA Certified

LED Touch Screen Computerized Safety

Flow activation

Exclusive Water Savings technology conserving up to 1, 100 gallons per year

157, 000 BTU (gas consumed per hour)

Exclusive Hot Start Programming minimizes cold water burst by staying in ready-fire state

【Super Quality Product 】 : This tankless water heater, to make sure no gas leaks risk when connection ,Featuring overheating and flameout ,and anti-freezing protection to ensure the family safety.the gas supply will shut off automatically under unexpectedly flame out， or high water temperature over 167 °F.Anti-freezing apparatus draining the stock water to avoid damage of freezing under cold areas.which has a very long service life, good durability and corrosion resistance.

【Energy Saving】 :This outdoor water heater adopt compact and light weight structure design with with advanced combustion technology to decrease gas consumption and burning noise.Maximum power output 41,000BTU/Hr,you will get instant endless hot water easily wherever you are.no need to preheat ,making it more efficient and energy saving.

【Easy to Install】:Equipped with BSP pipe fittings and all necessary accesories , There are three interface ports under propane water heater. The left one is the Intake port. ​the middle one is the shower port,and the right one is the water inlet, which is very convenient for customers to install.The tankless water heater will "caught on fire "with improper operation. Always check gas leakage before operation.

【Outdoor installation to save space】The product is installed outdoors and does not occupy the living space. The bottom built-in forced DC fan eliminates the influence of external wind. So as to ensure the stability of combustion, achieve safety, energy saving and no pollution. We recommend that all installations are carried out in accordance with local building and plumbing codes by licensed professionals.

【Endless water supply without preheating】The heat exchanger quickly heats the water to a maximum of 140°F, which is ready for use without waiting for hot water. It can run at approximately 5.1 GPM for 40 minutes, enough to produce almost 200 gallons of hot water. Make a multi-point water supply for the whole house to meet your family's water needs.

【Precise temperature control and stable temperature】Equipped with a wire controller cord length of 164ft, allowing you to control the water temperature indoors. The burner can be burnt in sections to meet the water temperature demand in the four seasons. Benefiting from the calculation and control of the heating power 1000/s by the chip, the temperature difference of the water can be precisely controlled within ±2°F.

Energy and Space Efficient: Space-saving design conserves energy as it only heats when necessary; multiple venting options offer installation flexibility

Optimal Water Pressure: High-performance 11 GPM hot water flow rate for a powerful, constant stream

Instant Heating: Circ-Logic technology enables recirculation patterns that coincide with your typical habits; Wi-Fi monitoring creates hot water on demand

【16L Tankless Water Heater】TCFUNDY Tankless water heater with compact design saves more space and energy efficient than traditional water heaters. LCE screen with digital temperature display and touch screen control. There are 3 modes you can choose: eco mode, common mode, tub mode.

【On-Demand Instant Water Heater】High efficiency natural Gas tankless water heater delivers 4.23 gallons per minute of on-demand endless hot water. No more waiting for long time, instant hot water for families, homes, cabins or apartments.

【Thermostatic & Energy Saving】Water heater built-in high-precision thermostat ensures constant temperature, high-thermal efficiency up to 90%. The self-modulating temperature technology only heat up water while you are using it to save energy.

Bradford White ICON System

Advanced ScreenLok Technology Flame Arrestor Design

Resettable Thermal Switch

Continuous Hot Water – never run out of hot water, even with back-to-back showers

Tankless Gas Water Heaters are cost saving and energy efficient

Reduces Energy Consumption - Automatically adjusts the amount of energy required to heat the water you need

【Instant Hot Water Heater】Tankless water heaters can provide endless hot water on demand for 2- 3 water points.

【Comfortable Bathing Experience】3.6 GPM hot water flow, precise temperature control, no water temperature sandwich.

【Premium design and Durable】Adopt oxygen-free copper water tank, reduce heat loss, high efficiency and durability.

Smart-Circ Intelligent Recirculation: This tankless hot water heater features Smart-Circ technology that learns your water usage patterns, then schedules pump and recirucation accordinlgy for superior energy efficiency and convenience

Never Run Out of Hot Water with this Compact Tankless Gas Water Heater: This indoor condensing tankless hot water heater from Rinnai is only the size of a small suitcase, but provides up to 11 GPM (7 fixtures at once)

Smart, Durable Design: With multiple venting options, water heater fits a wide array of spaces; Includes 15-, 5-, and 1-year residential guarantee for heat exchanger, labor, and parts, respectively; See Controlr module for WiFi control (not included)