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Description
1.32 Gallon Point-of-Use Mini Tank Water Heater for Instant Hot Water
The 1.32 gallon mini tank electric water heater is designed to provide instant hot water directly at the point of use. Installed under a sink, it eliminates long waits for hot water and helps reduce water waste.
This compact under sink water heater is ideal for kitchens, bathrooms, offices, RVs, and garages where immediate hot water is needed.
Fast Heating and Efficient Performance
Powered by a 1440W stainless steel heating element, this mini tank heater provides fast water heating and reliable performance.
The foam insulated tank keeps water warm throughout the day while minimizing standby heat loss, ensuring energy-efficient operation.
Easy Installation Under Sink
This 120V mini tank water heater is designed for quick installation.
Standard 1/2" NPT water connection
Plug-in installation with 120V outlet
Compact size for under sink installation
Temperature & Pressure relief valve included
It can be installed on a wall, shelf, or floor, depending on your space requirements.
Compact Under Sink Water Heater Design
With a space-saving design, this small tank water heater easily fits under sinks or inside cabinets.
Dimensions: 9.65" W × 9.45" D × 13.98" H
The compact size makes it perfect for point-of-use applications where a traditional water heater cannot be installed.
Adjustable Temperature Control
The built-in thermostat allows you to adjust water temperature between:
68°F – 140°F
This provides flexible hot water control depending on your needs.
Durable Glass-Lined Tank for Long Service Life
The heater is built with durable materials to ensure long-term reliability.
Features include:
Stainless steel heating element
Glass-lined steel tank
Protective anode rod
Corrosion-resistant interior
These components help extend the life of the heater while reducing the risk of leaks or sediment buildup.
Type: Mini Tank Electric Water Heater
Capacity: 1.32 Gallon
Voltage: 120V AC
Power: 1440 Watts
Temperature Range: 68°F – 140°F
Water Connection: 1/2" NPT
Installation Type: Point-of-Use / Under Sink / In-Line Booster
Mounting Options: Wall Mounted / Shelf Mounted / Floor Mounted
Product Dimensions: 9.65" W × 9.45" D × 13.98" H
Product Weight: 13.67 lbs
Included Components: Mini Tank Water Heater
Temperature & Pressure Relief Valve
Certification: UL Listed
FREE Shipping to U.S. Mainland addresses only. Unfortunately for us, we do not offer free shipping to Alaska, Hawaii, Virgin Islands, Puerto Rico, Guam or Canada, however if you do need to ship to these places, please kindly call us and the freight will be paid by you based on the specific address you can provide for us.
When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.
Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.
For returns due to buyer's remorse (ie: Order by mistake, Does not fit, Change my mind, No longer needed, etc) we will deduct 20% of your total refund amount for the reason of the loss caused to us as a vendor, which means only 80% of your total refund will be sent back to your account. For a defective return, a full refund will be sent back to your account.
Payment & Security
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
Just got this 1.3 gallon water heater for my camper van. Set up for outdoor or indoor showers and is a carry on that gets connected to 120v and quick connects to cold water supply via pump. Tested at home great, now time for field use. It's compact and pretty simple. Have an adjustable showerhead .5 to 1.5 gpm with shutoff to conserve water and flow rate.
Store owner replied:
Hello Dan,
You did a great job installing it.
Could you please take a few photos for us after you install the product?
We would like to share with our other customers.
Best regards,
ThermoMate customer service
Recently installed. Fits the space, warm water quickly, too soon to tell about anything else, but happy with the purchase.
I was trying to find a good gpm tank to supply a kitchen faucet and to be powered by only 120v. I was glad when I found this tank. Was very easy to install. Would install this tank again.
This heater is perfect for our food truck. Fast hot water and compact enough to hide under the sink. Passed all safety inspections thanks to the UL listing and T&P valve. Would buy again!
I’m using this in-line with our main heater as a booster for a bathroom far from the main line. Works flawlessly—no more lukewarm showers. Installation took under 30 minutes. Highly recommend.
Bought this for our guest bathroom. It stays hot even in standby and cuts down on water waste. Really appreciate the included relief valve and easy mounting options. Great product!
I use this in my workshop sink—super easy setup and zero issues so far. I like the durability of the stainless steel heating element and how well it’s insulated. Excellent for light-duty use!
Compact, powerful, and easy to install. I added this mini heater to our outdoor bar sink, and it delivers hot water instantly. No plumbing hassle, just plug in and go. Great for small spaces!
The fused glass-lined tank and corrosion-resistant build made this an easy choice. No brown water, no leaks. Runs quietly and performs as promised. I’m impressed with the build quality.
This little unit is impressive! It heats water fast and consistently. Perfect for my kitchen prep area where I don’t need a full-size water heater. The adjustable temperature is a great touch.
We added this to our laundry room utility sink and it’s been super convenient. Heats water quickly and doesn’t take up much space. I didn’t think I’d use it as much as I do!
Installed this under my bathroom sink, and it's been a total game changer! No more waiting for hot water in the morning. It heats quickly, stays hot, and fits perfectly in the cabinet. Definitely worth every penny.
Love how small and efficient this water heater is! It fits under the sink in our camper van perfectly. Great for washing hands or quick cleaning. A must-have for RV owners.
Unlimited Hot Water. This is great for any sink that requires a lot of hot water usage. This isn't suitable for showers because the flow rate isn't high. Make sure you do your annual maintenance to remove scale and hard water residue.
My husband is putting a sink into his man cave behind the garage, and this mini tank for "hot water on demand" is perfect for his use. It looks like it will be very easy to install, and will hide well under the small sink he will have there. Just need a 120v plug, and a water line. The size we got is just 1.32 gallons, but that is probably more than he will need there at any one time. The titanium lining is a plus because of our small town water has some minerals in it, and that will minimize having to replace it in 5 years. It has a 3 year warranty, so that will give us ample time to see how the durability is for it.
I am quite impressed with the quality of this tank and hubby is looking forward to using it.
We have this under the bathroom sink, and it's so nice to have hot water without letting it run until it gets warm. Husband had no trouble installing it, it's a great size, and it seems to be a high quality unit.
This is an easy to install instant hot water electric heater. It??s really compact and small; allowing it to go virtually anywhere. The output wouldn??t be for anything more than a sink. The water comes out instantly hot, which is the best part of having a tankless water heater. The biggest issue would be finding electric near the sink to begin with, but if you are handy, it wouldn??t be too difficult to either run the hot water pipe or the electric. I think it is worth the price.
This Thermomate mini hot water heater is very sturdy. The temperature is easy to set and the installation was not difficult. The correct hardware for installation was included. We purchased a couple of fittings and were ready to install. The heater was larger than what I expected but isn't too large to install in many tight areas. I installed this hot water heater under my kitchen sink and am delighted to have hot water so much quicker than before. This hot water heater has a 3-year warranty, Glass Lined Tank, Overheat and Over Pressure Protection. I honestly don't forsee having any problems with this hot water heater but having a three-year warranty shows that the manufacturer believes in their product, and I find that reassuring. Great Product!
This mini tank water heater is a great for my kitchen. Installation under my sink took roughly an hour, and since then, I've enjoyed instant hot water so far without leaks or maintenance hassles. The unit keeps the water consistently warm, though the pressure is slightly reduced. This is understandable, as the system likely prioritizes temperature over pressue. However, the minor pressure decrease is a non-issue for me and doesn't detract from the overall functionality.
We have a substantial solar system on our cabin but not enough to use a big huge water heater with a big tank like a traditional home has. So we got this little guy and it's been a real game changer to have hot water on demand like this. Its compact and easy to install. We have it hooked to the main water line coming in because it's just small cabin, and make sure nobody is washing dishes while someone else is taking a shower and its fine.
Perfect for a 'she-shed' we were installing in the back of our home. We needed a quicker source of hot water, and the handyman suggested we use one like this. He was able to install it in less than an hour once he had all the fittings. We now have hot water to a bathroom sink in the 'she-shed'. It isn't large enough for showering or much else, but plenty for a sink - kitchen or bath. We are really pleased with it. Easy to operate and easy to install. A cost-effective solution.
My husband is putting a sink into his man cave behind the garage, and this mini tank for ''hot water on demand'' is perfect for his use. It looks like it will be very easy to install, and will hide well under the small sink he will have there. Just need a 120v plug, and a water line. The size we got is just 1.32 gallons, but that is probably more than he will need there at any one time. The titanium lining is a plus because of our small town water has some minerals in it, and that will minimize having to replace it in 5 years. It has a 3 year warranty, so that will give us ample time to see how the durability is for it.
I am quite impressed with the quality of this tank and hubby is looking forward to using it.
This Thermomate mini hot water heater is very sturdy. The temperature is easy to set and the installation was not difficult. The correct hardware for installation was included. We purchased a couple of fittings and were ready to install. The heater was larger than what I expected but isn't too large to install in many tight areas. I installed this hot water heater under my kitchen sink and am delighted to have hot water so much quicker than before. This hot water heater has a 3-year warranty, Glass Lined Tank, Overheat and Over Pressure Protection. I honestly don't forsee having any problems with this hot water heater but having a three-year warranty shows that the manufacturer believes in their product, and I find that reassuring. Great Product!
This is an easy to install instant hot water electric heater. It’s really compact and small; allowing it to go virtually anywhere. The output wouldn’t be for anything more than a sink. The water comes out instantly hot, which is the best part of having a tankless water heater. The biggest issue would be finding electric near the sink to begin with, but if you are handy, it wouldn’t be too difficult to either run the hot water pipe or the electric. I think it is worth the price.
Reviewed in the United States on December 20, 2023
Style: 1.32 GallonsVine Customer Review of Free Product( What's this? )
We recently built a new addition onto our home that has a half bath that I am just finishing up. I really didn??t want to run a hot water line out to it... especially since it is a long distance from our water heater. This mini-heater was a great alternative.
Installation is very simple... especially if you have done any type of plumbing. The unit even comes with a built-in pressure relief valve.
This 1.32-gallon unit is not going to produce enough water for running a dishwasher or taking a shower, but for our situation where we just need hot water for a bathroom sink, this is great.
Do note the power cord is only 2-feet long and you really don??t want to use any type of extension cord... so plan your installation accordingly. You may need to add an outlet next to where this is to be installed.
The price seems competitive for the size and quality.
