10 Best Propane Tankless Water Heaters of 2026

Last updated on 04/03/2026
Advertising disclosure
Best Choice
1
9.9
Exceptional
Save 33%
Tankless Water Heater, Novieex On Demand Water Heater Propane Gas, Up to 4.3 GPM, 100000 BTU Instant Hot Water Heater with LED Display, Indoor Installation, 2-4 Point Use for Family Bathroom Kitchen
NOVIEEX

Tankless Water Heater, Novieex On Demand Water Heater Propane Gas, Up to 4.3 GPM, 100000 BTU Instant Hot Water Heater with LED Display, Indoor Installation, 2-4 Point Use for Family Bathroom Kitchen

33% Off
Why we love it
  • Delivers hot water instantly.
  • Precise temperature control.
  • Space saving wall mount design.
Main Highlights
  • 【Note 】 This 4.3GPM on demand water heater requires propane gas.
  • 【Reliable Hot Water on Demand】 With 100,000 BTU power, this on demand water heater delivers up to 4.3GPM instant hot water. You can comfortably run a shower, kitchen faucet, and bathroom sink simultaneously—all without any noticeable temperature drop.
  • 【Precise Temperature Control】 Enjoy consistent water temperature with a wide adjustable range from 98°F to 140°F. The built-in digital thermostat of the tankless water heater ensures your water stays at the desired setting, delivering comfort and safety for every shower and household task.
  • 【High Efficiency, Lower Bills】 Say goodbye to the energy and electricity waste of traditional heaters that reheat water nonstop. By leveraging a selectional burner system, our propane gas hot water heater precisely adjusts the flame for the water temperature. You will see a noticeable drop in your energy bills, making it an efficient and cost-effective choice.
  • 【All-Round Security System】Our built-in multi-protection system safeguards against gas leaks, overheating, dry-firing, and freeze damage, offering ultimate safety and comfort for families with temperature-sensitive elderly or kids with delicate skin.
  • 【Compact & Space-Saving】Compared bulky traditional tanks. Our on demand water heater is wall-mounted, saving over 50% of space and blends seamlessly into utility rooms, basements, or closets. Its sleek appearance and LED touchscreen interface allow for easy and intuitive operation.
  • 【Usage Reminder】 For safe and efficient use, this indoor propane tankless water heater requires professional installation by a licensed technician using 1/2" NPT fittings (Exhaust pipe included).
9.9
Exceptional
Save 33%
Amazon Logo
🛡️Trusted by 100M+ UsersWhy?
Best Value
2
9.7
Exceptional
GASLAND BS158 Outdoor Portable Gas Water Heater 1.58GPM, 6L Propane Tankless Water Heater for RV Camping Cabin Boat, Overheating Protection, Easy to Install, White
GASLAND

GASLAND BS158 Outdoor Portable Gas Water Heater 1.58GPM, 6L Propane Tankless Water Heater for RV Camping Cabin Boat, Overheating Protection, Easy to Install, White

Why we love it
  • Portable for various scenarios.
  • Advanced safety protection features.
  • Includes helpful installation accessories.
Main Highlights
  • 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.
  • 1-Year Customer Support - We provide a 1-year Warranty against manufacture defects and lifetime customer support.
  • What's Included - GASLAND BS158 Tankless Water Heater, CSA certified gas regulator and hose,5 feet On/Off Switch Shower Head, mounting hardware, garden hose adapter, Manual.
  • Safety Installation Tips - To avoid gas leakage caused by improper sealing of the water heater, DO NOT TWINE TEFLON TAPE between gas regulator and gas inlet pipe. Always check gas leakage before operation.
  • Maintenance Tips - Designed for portable outdoor use. It is splash-proof and can manage a little drizzle, however, prolonged exposure to rain/water will damage the internal components. We recommend using and storing your water heater in a dry place. For the winter, please drain out the wate by disconnecting the drain plug and store it in the warm and dry area.
  • Not Sutiable - For high altitude areas over 3300 feet and strong wind conditions
9.7
Exceptional
Amazon Logo
3
9.6
Superb
NEW Rinnai RX199iN Condensing Smart Sense Natural Gas or Propane Tankless Water Heater, Indoor or Outdoor Water Heater, Up to 11.1 GPM, 199,000 BTU
Rinnai

NEW Rinnai RX199iN Condensing Smart Sense Natural Gas or Propane Tankless Water Heater, Indoor or Outdoor Water Heater, Up to 11.1 GPM, 199,000 BTU

Why we love it
  • Versatile indoor and outdoor installation.
  • Compact yet powerful design.
  • High energy efficiency rating.
Main Highlights
  • One Model, Anywhere: This Rinnai tankless water heater is installable indoors or outdoors thanks to our new Versa Vent and powered by either propane or natural gas thanks to a Smart Sense gas control system; RX-OVC vent cap required for outdoor install
  • Never Run Out of Hot Water with this Compact Tankless Gas Water Heater: This condensing propane and natural gas tankless water heater from Rinnai is only the size of a small suitcase, but provides up to 11.1 GPM (7 fixtures at once)
  • Smart, Efficient Design: This water heater's modern design includes an easy-to-use interface, Quick Flush feature for simplified flushing, as well as a super-high energy efficiency factor of UEF .98; See Controlr module for WiFi control (not included)
  • Professional Installation Recommended: Visit the Find a Rinnai PRO page on our website to find a qualified technician to install your tankless water heater, and use the Rinnai Central App for help with setup, service & troubleshooting; We do not recommend installing a water heater without a technician
  • Find Your Rinnai: See our product guides, manuals, energy guide, warranty information, videos, and tables to find the right tankless water heater size for your home; Check our Ground Water Temperature Map to see if this heater is optimal for your region
9.6
Superb
Amazon Logo
4
9.6
Superb
Rinnai V53DeP Propane Tankless Water Heater, 5.3 GPM, Outdoor Installation
Rinnai

Rinnai V53DeP Propane Tankless Water Heater, 5.3 GPM, Outdoor Installation

Why we love it
  • Unlimited hot water convenience.
  • Energy-efficient and eco-friendly.
  • Compact design saves space.
Main Highlights
  • Endless Hot Water For Every Need: Enjoy the convenience of our tankless hot water heater with a 5.3 GPM flow rate, delivering unlimited hot water to multiple appliances for your busy household
  • Energy-Efficient Performance: Our propane tankless water heater conserves energy by heating water on demand, ensuring you use energy only when needed while enhancing the unit's lifespan with improved scale detection features
  • Optimal Space-Saving Design: The compact design of this outdoor propane water heater allows for installation in tight spaces while providing powerful and consistent hot water flow, perfect for families and individuals alike
  • Professional Installation Recommended: Ensure seamless performance and longevity by having a qualified technician install your Rinnai tankless water heater, offering peace of mind and adherence to safety standards
  • Reliable Warranty Protection: Backed by a robust warranty, our Rinnai water heater includes a 10-year warranty on the heat exchanger, a 5-year warranty on labor, and a 1-year warranty on parts, confirming our commitment to quality
9.6
Superb
Amazon Logo
5
9.4
Superb
Save 9%
APUS Tankless Water Heater Propane, 140,000 BTU Indoor Installation Up to 6.8 GPM, Zero Cold Water Technology for Instant Hot Water on Demand, Smart Wi-Fi App Control
APUS

APUS Tankless Water Heater Propane, 140,000 BTU Indoor Installation Up to 6.8 GPM, Zero Cold Water Technology for Instant Hot Water on Demand, Smart Wi-Fi App Control

9% Off
Why we love it
  • Instant hot water delivery.
  • Energy-efficient ECO smart cycle.
  • Mobile app for convenient control.
Main Highlights
  • Instant Hot Water: This upgraded smart propane tankless water heater delivers consistent performance with its 140,000 BTU burner and durable oxygen-free copper heat exchanger. With the latest intelligent heating technology, it provides hot water in just 1 second, giving you instant comfort without the wait
  • Zero Cold Water Tech - Instant Hot Water：Our tankless water heater propane system features APUS exclusive single-circulation technology that eliminates cold water wait time. This on demand water heater delivers instant hot water while its 24/7 ECO smart cycle saves 40% more energy than conventional hot water heaters
  • Built-in Booster Pump: Increases water flow by up to 130%, delivering a maximum of 6.8 GPM. it easily supports 2 showers and 2 sinks running at the same time without temperature fluctuations, ensuring a powerful and continuous hot water supply for the whole home
  • Smart Season Comfort Mode: Automatically adjusts outlet temperature based on incoming water, delivering consistent hot water all year round. With ±1°F precise temperature control, you’ll never worry about sudden cold water shocks—just steady comfort every time you turn on the tap
  • Smart WiFi Remote Control: Control your propane tankless water heater anytime via mobile app (Works with Tuya APP) . With one tap, busy professionals can preheat on the way home and step right into a comfortable hot shower after work. Adjust temperatures from 95°F–140°F, monitor performance, and receive alerts
  • Advanced Safety Features: Bottom turbo fan design (30% quieter than standard tankless water heaters); 8 protection systems including freeze and overheat protection; ECO mode optimizes this tankless water heater propane model for maximum efficiency.Compact & Easy Installation: Our space-saving tankless water heater (21.3×13.6×7.1") installs easily with standard 1/2" NPT connections. This propane tankless water heater is ideal for whole-house use and comes with customer service 24/7 US support
  • Built-in intelligent freeze protection automatically activates in low temperatures. Please note: When the ambient temperature approaches or falls below 41°F (5°C) for extended periods, or if the water heater will be unused for a long time, the unit must be completely drained of water to prevent internal components from freezing and cracking
9.4
Superb
Save 9%
Amazon Logo
6
9.2
Superb
FOGATTI Propane Gas Tankless Water Heater Outdoor - Max 5.1 GPM 120,000 BTU, CSA Certified Compact Design On Demand Instant Hot Water Heater - Instagas Comfort 120S Series
FOGATTI

FOGATTI Propane Gas Tankless Water Heater Outdoor - Max 5.1 GPM 120,000 BTU, CSA Certified Compact Design On Demand Instant Hot Water Heater - Instagas Comfort 120S Series

Why we love it
  • Endless hot water supply.
  • Space-saving compact design.
  • Precise temperature control guaranteed.
Main Highlights
  • Efficient Tankless Heating: The FOGATTI tankless water heater propane occupies only a third of the size of traditional heaters while delivering five times the performance. With 120,000 BTU and 5.1 GPM flow rate, it provides instant, endless hot water, supporting 2-4 outlets at once, making it perfect for whole house with medium family
  • Excellent Value: The tankless water heater provides excellent value with top performance at low energy costs. Its eco-efficient design helps reduce energy bills while saving space. Offering reliable hot water on demand, it ensures you get great value for the investment, combining efficiency, savings, and convenience
  • Precision Temperature Control: Featuring advanced water servo technology and temperature sensors, this propane tankless water heater precisely regulates water flow and gas intake, maintaining a temperature difference within ±1℉. Its four-stage combustion system ensures a consistent, comfortable experience, whether in cold winters or hot summers
  • Quick Outdoor Installation: With its compact size 26.2 x 17.1 x 7.1 inches, outdoor installation is simple and convenient, features a remote control panel for convenient indoor operation. This tankless water heater outdoor is compatible with low water pressures ranging from 15-150 PSI. It easily connects to a standard 120V AC power source for effortless use
  • Trusted Quality and Support: Built with a high-efficiency copper heat exchanger and a 304 stainless steel burner, this water heater offers remarkable durability and performance. CSA certified and equipped with multiple safety features, it meets stringent safety standards for dependable operation
  • Reliable Protection and Support: The FOGATTI tankless propane water heater comes with 2 years of full unit coverage and 5 years of coverage for the heat exchanger. Our dedicated customer support team is always ready to assist, ensuring peace of mind with any questions or concerns
  • Important Usage Guidelines: This propane tankless water heater outdoor features an active heating anti-freeze device. If the ambient temperature drops below 5℉ or if it will not be used for an extended period, draining the water inside is recommended to prevent damage. For optimal performance, it is best used at altitudes below 2000 feet
9.2
Superb
Amazon Logo
7
9.0
Superb
Save 5%
Propane Tankless Water Heater Outdoor, 5.2 GPM 130000 BTU On Demand Hot Water Heater with Remote Control, 110V Residential Instant Propane Waterheater
STPFFOT

Propane Tankless Water Heater Outdoor, 5.2 GPM 130000 BTU On Demand Hot Water Heater with Remote Control, 110V Residential Instant Propane Waterheater

5% Off
Why we love it
  • Instant hot water anytime.
  • Space-saving outdoor installation.
  • Advanced safety features included.
Main Highlights
  • LOW DEMANDS, HIGH STANDARDS - This propane water heater deliver up to 5.2 GPM of instant hot water, capable of supplying 2-4 water outlets simultaneously. The 0.7 GPM minimum water flow requirement ensures reliable use even in low water pressure areas and high-rise buildings
  • WISE WATER SUPPLY CHOISE - A tankless on demand water heater lets you say goodbye to those torturous waiting times. Installed outdoors, they save space and reduce safety risks. Propane water heaters are more energy-efficient than electric heaters, wise money-saving decision
  • BUILT FOR ALL-WEATHER - The on demand hot water heater is constructed with a thickened corrosion-resistant body, stainless steel vent, variable frequency fan, and a wind-resistant system, providing windproof, freeze-proof, and IPX5 waterproof protection
  • FOUR SEASONS SAME TEMP - This propane tankless water heater is equipped with an advanced thermostat system for precise temperature control (temp fluctuation ±1°F). The seven-segment layered combustion technology ensures consistent water temperature throughout the year
  • EFFORTLESS SETUP AND OPERATION - Once installed, just press the power button and turn on the hot water tap to enjoy instant hot water. The included controller (15ft wire) allows you to easily adjust the water temperature from indoors. The water outlet/inlet and gas inlet use standard 3/4” NPT connectors
  • SAFETY ALWAYS FIRST - Features include flame failure protection, overtime use protection, overheating protection, fan failure protection, anti-dry burning, and exhaust pipe blockage protection. We care about both the efficiency of our products and customers' safety. CSA certified, 2-Year warranty
  • NOTE: This device is ignited by electricity via a 4-foot 110V electrical cord plug. Please ensure that there is a power outlet at the installation location
9.0
Superb
Save 5%
Amazon Logo
8
8.9
Excellent
Save 21%
APUS Tankless Water Heater Propane Gas, Up to 4.42 GPM, Indoor Hot Water Heater, 95,000 BTU on Demand Instant Hot Water Heaters with Smart Digital Display, Space Gray
APUS

APUS Tankless Water Heater Propane Gas, Up to 4.42 GPM, Indoor Hot Water Heater, 95,000 BTU on Demand Instant Hot Water Heaters with Smart Digital Display, Space Gray

21% OffLimited time deal
Why we love it
  • Powerful heating capacity for comfort.
  • Precise temperature control every time.
  • Compact design saves valuable space.
Main Highlights
  • Powerful & High-Capacity: This high-performance propane tankless water heater delivers 95,000 BTU heating capacity with 4.42GPM high flow rate, featuring innovative 0.66GPM low-flow start technology. As a versatile propane tankless water heater, it meets simultaneous hot water demands for 2 showers plus 1 sink while maintaining stable temperatures even during peak usage
  • Precise & Steady: With high-precision sensors and smart CPU technology, this tankless propane water heater maintains water temperature within ±1°F of your desired setting (adjustable from 95°F-140°F). No more sudden hot/cold shocks—just perfectly steady water for showers, washing, and more, even with multiple faucets running. Enjoy worry-free comfort every time
  • Efficient & Durable: Featuring oxygen-free copper heat exchangers and innovative segmented combustion technology, this tankless water heater achieves exceptional 85%+ thermal efficiency. Designed for maximum performance, it delivers 30% greater energy savings than conventional tank water heater models
  • Compact & Space-Saving: This compact propane water heater saves space without sacrificing performance, featuring an intuitive LED touchscreen and sleek dimensions of just 20.55"H × 13.27"W × 5.91"D. As a tankless propane water heater, it delivers instant hot water on demand while operating at a quiet 36dB—quieter than most household appliances
  • Built-in intelligent freeze protection automatically activates in low temperatures. Please note: When the ambient temperature approaches or falls below 41°F (5°C) for extended periods, or if the water heater will be unused for a long time, the unit must be completely drained of water to prevent internal components from freezing and cracking
  • Safe & Reliable: Our reliable propane water heater includes multiple-layer safety protection and a 2-year coverage. This propane tankless water heater automatically shuts down if risks are detected, providing complete peace of mind with its instant, on-demand hot water comfort
8.9
Excellent
Save 21%
Limited time deal
Amazon Logo
9
8.8
Excellent
Save 14%
ORBEK Propane Tankless Water Heater Outdoor -Max 5.1 GPM 120,000 BTU Outdoor Installation - CSA Certified On-Demand Instant hot Water Heater 3/4" NPT Connector Size
Orbek

ORBEK Propane Tankless Water Heater Outdoor -Max 5.1 GPM 120,000 BTU Outdoor Installation - CSA Certified On-Demand Instant hot Water Heater 3/4" NPT Connector Size

14% Off
Why we love it
  • Endless on-demand hot water.
  • Efficient energy-saving performance.
  • Safe, certified and protected.
Main Highlights
  • 【Endless On-Demand Hot Water】The Orbek tankless water heater propane outdoor delivers 120,000 BTU heating capacity with 5.1 GPM high flow rate, featuring innovative 0.53 GPM low-flow start technology. It can provide a continuous supply of hot water to 2-4 outlets at the same time, making it suitable as a whole-house water heater or a practical gift for friends and family
  • 【Efficient & Energy-Saving】The highly efficient oxygen-free copper heat exchanger heats water rapidly, while a built-in chip intelligently adjusts the water temperature 20,000 times per second, keeping fluctuations within 1°F to provide a stable and comfortable water flow. It also keeps stable combustion even at low flow rates, achieving efficient energy utilization
  • 【Certified Safety & Reliable】The propane tankless water heater is CSA certified, meets stringent North American safety standards, and integrates multiple protections including anti-dry burning, anti-overheating, anti-leakage, anti-flameout, and anti-high water pressure. Whether showering, washing, or using water in the kitchen, you and your family can enjoy a stable supply of hot water with peace of mind
  • 【Easy Installation & Use】The on demand water heater's compact design (15.5"L x 7.3" W x 24.0"H) blends seamlessly into homes, cottages, and apartments. The propane tankless water heater fits standard 3-inch exhaust pipe, 3/4-inch NPT connector, and 120V household power, it's designed for outdoor installation only. We recommend professional installation to help you can enjoy reliable and comfortable hot water instantly
  • 【Convenient & Worry-free】A 2-year protection on the entire unit and a 5-year protection on the heat exchanger provide you with reliable support. The propane tankless hot water heater is equipped with a smart remote control and LED display, you can easily and precisely set the water temperature between 95°F and 149°F, and there's no need to reset it after a power outage. Its low-noise operation and energy-saving features create a quiet and worry-free home environment for you
8.8
Excellent
Save 14%
Amazon Logo
10
8.8
Excellent
Save 10%
Propane Tankless Water Heater, 4.21GPM 16L Indoor,Constant propane water heater,Instant Hot Propane Gas Water Heater with Multi-Protection
VELPAX

Propane Tankless Water Heater, 4.21GPM 16L Indoor,Constant propane water heater,Instant Hot Propane Gas Water Heater with Multi-Protection

10% Off
Why we love it
  • Efficient on-demand hot water.
  • Safe and reliable protections.
  • Space-saving compact design.
Main Highlights
  • 【Tankless Water Heater】– This propane tankless water heater features steady temperature control and multiple safety protections, including a flame failure device, anti-freeze protection, and overheating protection. It operates with just 3.6 PSI of water pressure, with a working pressure range of 3.6 PSI – 116 PSI, delivering up to 4.21 gallons of hot water per minute. With a maximum temperature rise of 65°C(149°F), this unit is designed exclusively for use with propane (LPG).
  • 【Efficient & Energy-Saving】– With a high-performance output of 68,000 BTU per hour, this 4.21 GPM instant propane water heater provides on-demand hot water for 2–3 points of use simultaneously, making it ideal for bathrooms and kitchens. The advanced combustion technology minimizes gas consumption and reduces operational noise for a more efficient and quieter experience.
  • 【Premium Quality & Durability】– Crafted with a stainless steel body for superior temperature and corrosion resistance, this propane water heater is built to last. The oxygen-free copper water tank ensures minimal heat loss and an extended service life. The LED smart digital display allows for easy temperature adjustments between 35°C (95°F) and 65°C(149°F), giving you precise control over your hot water needs.
  • 【Easy Installation & Use】– This tankless propane water heater is designed for quick and hassle-free setup. It comes equipped with standard 1/2" NPT water fittings,gas pipe, inlet and outlet water pipe, and a 2.5" horizontal vent pipe for easy installation.For safe operation, ensure proper ventilation and install a smoke exhaust pipe as required.
  • 【Versatile & Space-Saving】– This compact tankless water heater saves over 50% of space compared to traditional tank models, making it a perfect choice for homes, small cabins, and remote apartments. It efficiently meets both bathroom and kitchen hot water demands without the need for an expansion tank. Note: In cold weather, drain residual water by opening the pressure relief valve if the unit will not be used for an extended period.
8.8
Excellent
Save 10%
Amazon Logo

Related Deals You Might Like for Propane Tankless Water Heaters

📊We scanned 1249 products
🔍
We reviewed the most relevant Propane Tankless Water Heaters offers across Amazon and leading retailers, covering major brands and models. Our shortlist features trusted names like NOVIEEX, GASLAND, Rinnai, APUS, FOGATTI, STPFFOT, Orbek, VELPAX, known for dependable quality and smart design.
⭐
To determine today's best Propane Tankless Water Heaters, we analyzed 6246 real customer and expert reviews, focusing on satisfaction, real-world performance and long-term reliability. We also weigh each review's relevance, authenticity and freshness for a fair comparison.

Here's what we found:

🏆 #1
Tankless Water Heater, Novieex On Demand Water Heater Propane Gas, Up to 4.3 GPM, 100000 BTU Instant Hot Water Heater with LED Display, Indoor Installation, 2-4 Point Use for Family Bathroom Kitchen

Our overall winner is Tankless Water Heater, Novieex On Demand Water Heater Propane Gas, Up to 4.3 GPM, 100000 BTU Instant Hot Water Heater with LED Display, Indoor Installation, 2-4 Point Use for Family Bathroom Kitchen by NOVIEEX. It stands out for the right balance of quality, performance and value.

✨ What sets it apart:
✓Delivers hot water instantly
✓Precise temperature control
✓Space saving wall mount design
💎 Best Value
GASLAND BS158 Outdoor Portable Gas Water Heater 1.58GPM, 6L Propane Tankless Water Heater for RV Camping Cabin Boat, Overheating Protection, Easy to Install, White

The best value for most shoppers is GASLAND BS158 Outdoor Portable Gas Water Heater 1.58GPM, 6L Propane Tankless Water Heater for RV Camping Cabin Boat, Overheating Protection, Easy to Install, White by GASLAND, with consistently high satisfaction across expert and customer reviews.

💰 Best Deal
Tankless Water Heater, Novieex On Demand Water Heater Propane Gas, Up to 4.3 GPM, 100000 BTU Instant Hot Water Heater with LED Display, Indoor Installation, 2-4 Point Use for Family Bathroom Kitchen

The strongest deal right now for Propane Tankless Water Heaters is Tankless Water Heater, Novieex On Demand Water Heater Propane Gas, Up to 4.3 GPM, 100000 BTU Instant Hot Water Heater with LED Display, Indoor Installation, 2-4 Point Use for Family Bathroom Kitchen at NOVIEEX, currently at 33% off.

🔄Our Propane Tankless Water Heaters ranking is updated regularly to reflect new releases and price changes—check back for the latest picks and deals.