Rheem Tankless Water Heater

Adopts more advanced technology that safer and longer-lasting. TANKLESS Design provides instant hot water endless. Previous Vent 3" and Water/Gas Pipe 3/4" compatible with tankless, only simple re-layout. Note: Fogatti water heater pass water and gas supply testing before leaving the factory. May have residual water on the unit or package, but does not affect use.

Get hot water on demand right when you need it and only when you need it. Our tankless water heater doesn’t pre-heat and stores water like conventional models, so it uses less energy. The heat-on-demand design gives you an endless flow without the need to run your faucet or showerhead until the water warms up, so you use less. No tank means it installs right where water is used — under the sink, in a vanity — to save space. It’s the perfect upgrade for smaller or eco-friendly homes!

My kid loves. Yanira. Far Rockaway, NY. Sun Sep 29 2024

Get hot water on demand right when you need it, and only when you need it. Our tankless water heater doesn’t pre-heat and store water like conventional models, so it uses less energy. The heat-on-demand design gives you an endless flow without the need to run your faucet or showerhead until the water warms up, so you use less. No tank means it installs right where water is used — under the sink, in a vanity, closet — to save space. It’s the perfect upgrade for smaller or eco-friendly homes!

Nice water heater. Took about 4 hours to install with the 3 required 2 pole breakers. 125° endless hot water supply. Very nice change from a traditional water heater with a storage tank.. Jordan. Sun Jul 16 2023

Get hot water on demand right when you need it, and only when you need it. Our tankless water heater doesn’t pre-heat and store water like conventional models, so it uses less energy. The heat-on-demand design gives you an endless flow without the need to run your faucet or showerhead until the water warms up, so you use less. No tank means it installs right where water is used — under the sink, in a vanity, closet — to save space. It’s the perfect upgrade for smaller or eco-friendly homes!

I’d love to give a glowing performance review but it won’t be installed until next week. However it meets all of my requirements and is priced right. Looking forward to ditching my bulky hot water heater for this streamlined model.. Arthur. Sarasota, FL. Sun Apr 23 2023

The AH Pro-Performer tankless water heater is engineered for reliability and efficiency, making it ideal for demanding applications. Designed with advanced water heating modulation technology and a ¾-inch inlet and outlet, it delivers powerful, high-flow performance. Constructed from ASTM 304 stainless steel, its enclosure and heat exchangers resist sediment buildup and corrosion, ensuring long-lasting durability. The self-modulating system automatically adjusts energy usage, helping users save up to 60% on water heating costs. With digital temperature controls, homeowners can precisely set their preferred output temperature, while contractors benefit from USB diagnostics, allowing full unit analysis through the IHEAT software—no disassembly required. Thanks to its compact, vent-free design, installation is simple, and the unit can be linked in series for greater capacity. Providing unlimited hot water, intelligent electronic controls, and a competitively priced alternative to traditional tank heaters, the AH Pro-Performer is a smart, space-saving solution for modern water heating needs.

Seems like the water fluctuates when taking a shower. I had to run there forty amp breakers. Overall happy. Brooks. Port Deposit, MD. Fri Jan 17 2020

FOGATTI tankless Non-condensing water heaters indoor model, 0.81 Uniform Energy Factor (UEF), reduce energy consumption and save money on energy bills. User keep it Antifreeze Protection System working by plugging it in at all times at 120V, 60 Hz. If it's below 37.4F or not using it for a long time, drain the water heater to avoid freezing. If ECO mode is turned on, the default temperature is 104F. Only exit ECO mode, the rise and fall key is valid. TOP technology, superior safety and durability.

Installation was easy. Unit has been working great, so far. Has been installed about two weeks.. Anonymous. Wed Aug 19 2026

This tankless water heater provides on-demand hot water designed to support consistent temperature performance for everyday bathroom use. An integrated LED display clearly shows outlet temperature and water flow information. The adjustable temperature control knob allows simple customization based on comfort preferences, helping maintain stable water output for showers or sink use. Built with iron and metal components, the structured housing supports dependable daily operation. Designed for efficient heating performance and convenient installation, this tankless unit supports reliable hot water access.

I had to return because it was too big for my unit but beautifully built!. Elan. Fri Jul 17 2026

Enjoy endless hot water with the ThermoMate indoor tankless water heater. Delivering 4.22 GPM and 113,000 BTU, it powers multiple showers simultaneously with precise ±1°F stability. Energy-efficient and space-saving, it features smart touchscreen diagnostics and advanced freeze protection.

Does job well… very well priced. Frank. US. Wed Sep 02 2026

Experience unlimited hot water with the WH-AZ02-199-NGI, a Indoor tankless water heater. Boasting 199,000 BTU power, this system provides energy-efficient, on-demand heating for maximum convenience. Designed for durability and reliability, it features built-in Anti-Freezing Protection to perform even in harsh climates.

Ideal for replacing your electric storage tank water heater in some applications or supplementing a water heating system, this tankless water heater and powerful and can installed virtually anywhere inside the home. Advantages include endless hot water, reduced electricity costs, and substantial space savings. This product is built to last with solid copper heat exchangers and can help provide homeowners with a lower energy bill.

love the product and everything hate the fact you gotta find a dealer to get any parts or anything. Micael789424. Mon Aug 07 2023

Upgrade your home with this high-efficiency propane tankless water heater, delivering 4.42 GPM of endless hot water on demand. Its 95,000 BTU system powers two showers simultaneously, while plus or minus 1°F precise temperature control eliminates frustrating fluctuations. Enjoy 30% energy savings with its 85%+ thermal efficiency and space-saving compact design. Equipped with multi-layer safety protection, quiet operation, and intelligent freeze protection, this reliable unit provides safe, instant comfort for the whole family.

Nice inconvenience don’t take up too much space. Cynthia. Johns Island, SC. Sat May 30 2026

Do you still suffer from cold water hand washing on cold winter days? Not this time. Take a quick look at our instant small electric water heater, which can instantly enjoy the warm water flow even in the coldest weather. It is undoubtedly an efficient combination of technology and life, becoming an integral part of our smart home life.

Worked perfectly to fix a wash station for our church festival. Super easy to install. Looking at ordering another one for another wash station.. Elena. Burnsville, MN. Fri Aug 07 2026

The Drakken 3.5kW Tankless Electric Shower Head Water Heater is a compact, space-saving hot water solution designed for showers, cabins, workshops, outdoor rinse areas, campsites, and other point-of-use applications. Built with Drakken’s Patent-Pending Protected Heat Transfer Technology, this innovative unit is engineered to heat water efficiently while helping reduce direct water-to-element contact. Designed for convenience and everyday performance, this electric tankless shower head water heater delivers hot water on demand without the need for a bulky storage tank. Its compact form makes it ideal for installations where space is limited, while its adjustable power settings help accommodate varying inlet water temperatures. With built-in safety protection, easy-to-read LED indicators, and a lightweight design, the Drakken 3.5kW unit offers a practical and modern hot water solution for a wide range of applications.

I’m really impressed with this water heater. The build quality feels solid and reliable, and it performs exactly the way I hoped. The water flow is strong, the pressure stays consistent, and it heats the water perfectly every time. No fluctuations, no delays just steady hot water whenever I need it. Overall, it’s a great purchase and works exactly as advertised. It works awesome. Anonymous. Sun Aug 30 2026

Instant Hot Water, Endless Comfort:Tankless Gas Water Heater offers instant heating, eliminating the wait for hot water. With powerful performance, it provides continuous hot water for showers, washing, and more. Precise temperature control ensures a constant, comfortable water temperature for all your needs.

The House of Rohl® brands bring the spa experience home with an exclusive and complete shower offering. Showerheads that deliver a decadent deluge. Handshowers and body sprays immerse the body in soothing rejuvenation. Customers can select designs to achieve the aesthetics and performance they desire — from traditional designs to sleek modern lines, and everything in between. Shower selections with style and quality as well as accessories that add a finishing touch to any décor.

Works like a charm. David. Mayfield Heights, OH. Sat Oct 03 2026

Instant Hot Water, Endless Comfort:Tankless Gas Water Heater offers instant heating, eliminating the wait for hot water. With powerful performance, it provides continuous hot water for showers, washing, and more. Precise temperature control ensures a constant, comfortable water temperature for all your needs.

Engineered for high-capacity residential requirements, this tankless heating unit utilizes advanced self-modulating technology to optimize energy expenditure while maintaining a constant ±1°F temperature output. The internal architecture features a premium cast aluminum heating rod designed to facilitate rapid thermal exchange without the standby energy loss of traditional tanks. Built with a focus on operational efficiency, this system integrates seamlessly into modern infrastructure, providing a high-performance solution for simultaneous multi-point supply across kitchens and bathrooms.

The Drakken ES-9 Wi-Fi Enabled Electric Tankless Water Heater is designed to deliver reliable on-demand hot water in a compact, space-saving wall-mounted design. Built for properly sized residential and light-use applications, the ES-9 provides efficient hot water performance without the need for a bulky storage tank. Engineered with Drakken’s patent-pending Protected Heat Transfer Technology, the ES-9 is designed to help reduce direct water-to-heating-element contact, supporting long-term durability while helping protect the system from sediment, calcium, and mineral buildup. This advanced design helps support reliable performance while reducing maintenance concerns commonly associated with traditional exposed-element tankless water heaters. The ES-9 is also Wi-Fi enabled, giving users modern connected convenience for monitoring and adjusting system settings through supported smart control features. With digital temperature control, self-modulating technology, and a compact footprint, this model is ideal for properly sized applications such as condos, apartments, cabins, small homes, bathrooms, utility spaces, and other whole-home standard uses. Designed for energy-conscious performance, dependable comfort, and sleek installation, the Drakken ES-9 combines modern convenience, compact design, and on-demand hot water in one reliable unit.

Instant Hot Water, Endless Comfort:Tankless Gas Water Heater offers instant heating, eliminating the wait for hot water. With powerful performance, it provides continuous hot water for showers, washing, and more. Precise temperature control ensures a constant, comfortable water temperature for all your needs.

Was package very well and shipping was very fast. I’m very excited to use the water heater. The product looks well made and will fit our needs for our home. Thank you!!. Shawn. Thu Mar 05 2026

Get hot water on demand right when you need it, and only when you need it. Our tankless water heater doesn’t pre-heat and store water like conventional models, so it uses less energy. The heat-on-demand design give you an endless flow without the need to run your faucet or showerhead until the water warms up, so you use less. No tank means it installs right where water is used — under the sink, in a vanity, closet — to save space. It’s the perfect upgrade for smaller or eco-friendly homes!

Great price and product seems to be an easy install and hookup. Jhall. London Ky. Mon Nov 04 2024

This high-performance propane tankless water heater delivers a 4.8 GPM flow rate to simultaneously support 3–4 hot water points across your entire home, while reliably operating at a minimum 0.6 GPM flow. It features a sleek LED touch control panel with a clear digital display for intuitive temperature adjustment and real-time operation monitoring. Equipped with real-time temperature sensing and staged heat control, it continuously adjusts output to eliminate frustrating temperature swings, delivering far steadier heat than ordinary units. Built with 8 comprehensive safety protections including IPX4 waterproofing, overheating and dry-run safeguards, automatic gas cutoff, wind pressure and flame failure protection, water pressure monitoring, and fault code reporting, it ensures full peace of mind for your household. Designed for cold weather, its built-in anti-freeze thermostat automatically activates below 40°F to protect internal components, while premium parts like a 4-stage combustion system, oxygen-free copper heat exchanger, and under-30dB DC brushless fan deliver efficient heating, minimal heat loss, extended service life, and ultra-quiet operation. With a compact 22.8" x 13.8" x 6.7" footprint, standard 1/2" NPT water/gas connections, 120V wall plug compatibility, and an included vent pipe, it offers a space-saving, high-performance whole-home hot water solution ideal for modern households.

Hot water from a sleek little box! We had to update wiring for this upgrade from an old system, but wow- what a great design, size and output. Install was straight forward. This is for a kitchen and shower shower in. Lane. ID. Wed Oct 15 2025

Get instant hot water right where you need it with the ThermoMate Tankless Electric Water Heater. Perfect for under-sink or cabinet installation, this compact 6kW unit features smart self-modulating technology to save up to 60% on heating costs while delivering an endless flow of water.

Works great follow directions.. Dennis. Sun Sep 13 2026

Instant Hot Water, Endless Comfort:Tankless Gas Water Heater offers instant heating, eliminating the wait for hot water. With powerful performance, it provides continuous hot water for showers, washing, and more. Precise temperature control ensures a constant, comfortable water temperature for all your needs.

Tankless Water Heater Instant Propane Gas Water Heater 14L 3.7GPM, 40,824 BTU Portable Instant Hot Gas Water Heater with Digital Display, Overheating Protection for Indoor and Camping

Exterior CTWH 160K Btu 7.5 gpm

Best tankless water heater ever i love it i really recomended. Arturo. Sat Feb 21 2026

During chilly winter, cold water will make your hands cold or uncomfortable when taking a shower. With our electric water heater, you can say goodbye to this problem! It adopts 4500W power and stainless steel heating pipes to provide you with instant hot water for a comfortable washing experience. Multiple protection devices ensure a high level of safety. The modern appearance makes it the ideal companion for your bathroom. Rated Voltage: AC 110V, 50HZ Rated Power: 4500W Rated Current: 40.9A Rated Water Pressure: 0.6Mpa Wire Diameter: ≥ 4 mm/0.16in Magnetic Card Meter: 10 (40) A Mechanical Meter: ≥5 (20) A Air Switch: ≥40A Starting Water Flow: 1.2-1.5L/0.32-0.4gal/min Diameter of Hot Outlet Fitting: ID 0.7cm/2.76in, OD 2cm/0.79in Diameter of Cold Outlet Fitting: ID1.2 cm/0.47in, OD 2 cm/0.79in Applicable Water Pressure: 0.02-0.6Mpa Wire Requirements: ＞4mm²/0.006in² Copper Wire, ≥32A

Hooked the unit up and turned on the water and the back end blew water out and down the wall. Just finally got the water lines done. I do not have a warranty card and could not find a phone number. Need to return. I was able to get a new one from the manufactures rep and it works great. Thank you Wayfair team that handled this issue so I am now able to post a 5 star review.. East County Girl. C Ouer Dalene. Mon Sep 15 2025

Experience unlimited hot water with the WH-AZ51-180-NGO, a Outdoor tankless water heater. Boasting 180,000 BTU power, this system provides energy-efficient, on-demand heating for maximum convenience. Designed for durability and reliability, it features a Wired Remote Control for added convenience and built-in Anti-Freezing Protection to perform even in harsh climates.