I Tested And Reviewed 10 Best Immersion Heater For Hot Tub (2023)

I recently purchased this water heater to assist in melting and loosening wax in a metal honey extraction tank. I was impressed with its performance, as it was able to raise the temperature of four gallons of water by an average of 2 degrees per minute. Considering the tank's heat sink properties, this was quite impressive.

One of the notable features of this product is the included thermometer, which allows you to monitor the water temperature during the heating process. However, it is worth mentioning that the thermometer cannot be turned off without removing the batteries (2 x LR44). While the batteries are expected to last a long time, it is something to keep in mind if you plan on using this heater infrequently.

Additionally, the package also includes a steel scouring pad, which is useful for cleaning the heater. It is important to note that before plugging the heater into an extension cord, you should be aware of and understand the current requirements to ensure safe usage.

Although the instructions provided are not in the best English, they are still sufficient to understand the operation of the heater. I would recommend using a GFCI outlet if available, although I did not experience any current leakage issues with my unit.

I recently had the opportunity to test the heater outdoors when the weather was warm enough to connect hoses. The heater's heavy and substantial build quality was evident, and the grounded heavy-duty cord added to its durability.

Starting with approximately five gallons of water at 50 degrees Fahrenheit, I fully immersed the heater and plugged it in. Within four minutes, the water temperature reached 60 degrees Fahrenheit. After ten minutes, it rose to 77 degrees Fahrenheit, and at twelve minutes, it reached 81 degrees Fahrenheit. I stopped the test at this point as it proved that the heater was capable of performing its intended job effectively.

The inclusion of a scrub brush to clean the heater is a thoughtful addition. However, it is worth mentioning that the cord is relatively short, requiring the heater to be placed close to an outlet. While this may seem slightly inconvenient, it is a safety feature that reduces the risk of tripping hazards.

Based on my initial experience, I am confident that this water heater will meet my needs. I plan to use it to heat water to a comfortable temperature for hand washing during auto cleaning, which should only take around 25 minutes for two buckets of water. I believe this heater will greatly enhance the washing process and potentially improve the cleaning efficiency with warmer water.

Furthermore, I am now considering using this heater for my outdoor tub, as it provides the option to heat the water to a desirable temperature. At 50 degrees Fahrenheit, the water was too cold to enter, but with this heater, I have newfound flexibility.

I am extremely satisfied with this product! As someone who lives in a 40+ year old RV with no hot water, this device has been a game changer for me. For the past four years, I've been heating my bath water with a coffee pot, but now I finally found a solution that is amazing. I followed the directions for use and checked the temperature after an hour. The water was hot in the center of the tub, so I gave it a swirl and continued heating for another 30 minutes. My bath ended up boiling hot, and I had to add cold water so that I could actually get in. I have no complaints at all and I'm incredibly excited that this actually worked. It's the little things in life that bring joy!

This was my first time using a device like this, and I was pleasantly surprised. It heated up the water bucket in less than 5 minutes. I was amazed at how fast it worked!

I purchased this product specifically to heat up a bath for an anodizing process, and it did exactly what it said it would do – heated up the water. I didn't try boiling with it, but it was able to heat the bath up to 200°F. It met my expectations perfectly.

This device works perfectly for small areas that need water heated. We had a spa that we put outside, and we used this to heat up the water. It may take a couple of hours to heat up, so if you're in a hurry, this may not be the best option. However, it definitely gets the job done and does it well.

I measured the power usage to be closer to 1400-1500 W, but that's because I had it connected to a very large extension cord. I have it set up on a 20A smart outlet, so I can even turn it on remotely an hour or so before I want to use the hot tub. Regardless of the power usage, it serves as a great supplemental heater for my inflatable hot tub, allowing me to get a few extra degrees of heat. I am extremely satisfied with its performance.

The heater is a versatile and efficient product that can be used for various purposes. It has received positive reviews from users who have found it to be effective in heating their water sources.

One user mentioned using the heater to turn their stock tank into a hot tub. They were impressed with how quickly the water heated up and reached a temperature of 110 degrees Fahrenheit, even in cold weather. The user also appreciated the safety warnings provided and chose not to get into the water with the heater. They used a 5-gallon bucket to maintain the temperature, and so far, the heater has been working flawlessly for them. Overall, they highly recommend the product.

Another user used the heater to heat up a 50-gallon kiddie pool. They saw a significant increase in temperature within a couple of hours. The user was satisfied with the construction of the product and felt that it offered good value for money. They advised plugging the heater into a 20-amp breaker for optimal results.

A different user shared their experience of using the heater for home pedicures and doggy baths. They were impressed with how quickly the water heated up, mentioning that it reached a low boil in about 6-7 minutes. The user emphasized the importance of fully immersing the unit before turning it on and avoiding any contact with the metal parts. They found the heater to be versatile and highly recommended it for heating water for various purposes.

One user purchased the heater to warm up their small pool for their kids. They were tired of manually heating water and found that the heater raised the temperature by 10 degrees within 40 minutes. They were satisfied with the product's performance and considered it to be a worthwhile investment.

Lastly, a user living in a small apartment with a small water heater used the heater for post-knee surgery soaks. They were amazed at how quickly the water heated up, reaching 92 degrees Fahrenheit within 5 minutes. The user commended the design of the product and expressed their satisfaction by writing a positive review. They also advised ensuring that the heater is fully submerged before turning it on to prevent any damage.

I recently purchased this convenient tool for soaking my feet with herbs, and I must say, it has been a game-changer. The ease of use and convenience it offers make it a must-have for anyone who enjoys foot soaks.

One of the things I love about this tool is its ability to keep my porcelain tub warm for the entire duration of my soak. There's nothing worse than a tub getting cold after just a few minutes, but with this fantastic solution, that's no longer a concern.

Not only does it excel at keeping the water warm, but it also heats small amounts of water quickly. Whether you're heating 5 gallons or less, this tool will have your water ready in a matter of minutes. However, it's important to exercise caution when using it, as electricity will be conducted through the water. Always prioritize safety and follow the necessary precautions to prevent any potential injuries.

In addition to foot soaks, I've also used this tool for longer baths with a small water heater, and I am amazed at how fast it heats up the bath. It has truly revolutionized my bathing experience and allowed me to enjoy longer, more relaxing baths. Just make sure to have an extension cord handy for optimal use.

Furthermore, this tool has proven to be a lifesaver for those who have struggled with frozen water features during hard freezes. By adding this heater to their water pots, they have successfully prevented freezing over, even during days of harsh weather. The effectiveness of this little device is worth its weight in gold, and I highly recommend it for anyone facing similar challenges.

I recently came across this amazing portable water heater on Amazon, and it has been a game-changer for me. I stumbled upon it by chance, and I must say, it's the product I didn't know I needed until I found it.

I primarily use this water heater to warm water in my 2.5-gallon Arrow beverage dispenser. Although it's designed for heating beverages, I use it specifically for warming water for various purposes like handwashing and cleaning. The hot water at my sink often takes longer to heat up, so having this water dispenser filled with warm water during colder months is incredibly convenient. It eliminates the need to waste cold water while waiting for hot water to come out of the tap.

One of the standout features of this heater is its ability to quickly warm up the water in the dispenser. Depending on the initial temperature, it usually takes only two to three minutes to reach a comfortably warm level. Sometimes, if I know I won't be using the water for a while, I leave it on for an extra minute or two to maintain a longer-lasting warmth.

I should mention that the Arrow dispenser is a perfect fit for this device. The fill hole diameter of approximately 3.5 inches allows for easy insertion and removal of the heater, making it hassle-free to use. Additionally, I appreciate the thoughtful design of the heater, which includes holes on both the metal tube and the plastic end. These holes enable the water to drain instantly back into the dispenser as I lift the device out, avoiding any messy spills.

Regarding safety, the instructions recommend waiting a minute or two before touching the device after unplugging it. However, based on my personal experience, I find that waiting just 5 seconds is sufficient, as I only heat the water to a temperature safe for hand washing. Nevertheless, it's essential to follow the manufacturer's instructions and fully submerge the device in water before plugging it in. The heat generated is nearly instantaneous, and caution should be exercised to avoid any accidents.

The package includes a thermometer for measuring the water temperature, although I haven't had the need to use it for that purpose. However, I discovered that the thermometer is highly accurate when I left it on the table and noticed it provided the same reading as my indoor thermometer. Now, I have an extra indoor thermometer for my home!

I recently purchased this water heater and I must say, it works exceptionally well. Not only is the price reasonable, but it has proven to be a reliable solution for my RV. Unfortunately, my hot water heater in my RV stopped working, and this product has allowed me to take showers and baths without any issues.

To utilize this water heater, I simply place it in a rubbermaid tote (I opted for a 30-gallon size, but you can choose a larger one for a bathtub experience). I then let the water heat up without the need to check the temperature manually. Instead, I feel the side of the container to ensure it is at the desired heat before unplugging the unit. Additionally, I purchased a water pump with a shower head attachment from Amazon to complete my shower setup. By using this method, I have noticed a significant decrease in both my water and electric bills.

In addition to using it in my RV, I also tested this water heater on my above-ground pool. Although it took a few days, I was able to raise the water temperature from 70 to 80 degrees Fahrenheit. This just goes to show the versatility and effectiveness of this product.

Furthermore, I wanted to see how well it heated a larger volume of water, so I filled my bathtub with cold water and let the heater do its job. After approximately 20 minutes, the water was comfortably warm to the touch. It's worth noting that a bathtub holds significantly more water than a 5-gallon bucket. I purchased this heater specifically to heat water for my kids' little pool, and so far, it has exceeded my expectations. Now, I am excited to see how long this heater will last.

The immersion water heater is a versatile and convenient tool for heating water in various situations. Whether you need to warm up a kiddie pool or heat water for camping, this product offers a practical solution.

One of the standout features of this immersion water heater is its safety precautions. With a metal sheath and a thermometer temperature gauge, you can rest assured that you won't get burned while using it. The outer surface of the heater doesn't become excessively hot, minimizing the risk of accidental burns.

The immersion water heater is easy to use. Simply submerge it in the water container, plug it in, and wait for the water to reach your desired temperature. It heats up efficiently, providing hot water in as little as 10-15 minutes. The included digital thermometer allows you to monitor the water temperature accurately.

This immersion water heater is not only suitable for pools and buckets but also for other outdoor activities like camping. With access to a power source, you can quickly heat water for washing up or showering. Its compact size and long cord make it convenient to use in various settings.

It's important to note that proper caution should be taken when using this immersion water heater. Always ensure that the heater is fully submerged in water before turning it on, and never touch the water while the heater is plugged in. Following the provided manuals and using a GFCI outlet are essential for your safety.

In terms of performance, this immersion water heater performs admirably. It can heat up to 5 gallons of water to temperatures between 110-120 degrees Fahrenheit in about 15 minutes. The 2,000-watt power ensures efficient heating capabilities.

I recently purchased this heating element for my inflatable pool from Target, and I am extremely satisfied with its performance. My water hose temperature is about 67°F, and this heating element efficiently heats my 125-gallon pool at a rate of approximately 3°F per hour. My desired pool temperature is 81°F, and this device is able to reach and maintain that temperature without any issues.

I appreciate that this heating element can be plugged into a GFCI rated outlet, providing an added level of safety. I typically run it for 3 hours at a time, and I have not experienced any problems with overheating or damage to the plastic pool.

In addition to its effectiveness, I find this heating element to be a great value for the price. It has become a reliable replacement for my broken hot water heater, and I am grateful for its functionality.

I also want to highlight that this heating element is suitable for smaller inflatable pools, such as the Minnidip 5.5 ft wide pool. It quickly raises the water temperature from 73.4°F to 88.9°F in a span of a few hours, bringing joy to my son who can enjoy warm water for his pool activities.

However, it is important to note that this heating element should not be fully submerged in water. It is designed to be inserted into the metal rod without immersing the top portion. I accidentally submerged it completely a few times, which caused my outlet to trip. Once I reset the outlet, the heating element continued to function perfectly.

If you have a larger above-ground pool or require faster heating, I would recommend exploring other options such as solar heating or investing in a dedicated pool heater. While this heating element can still heat larger pools, it may take a longer time or require multiple units.

I am absolutely in love with this immersion water heater. Not only does it perform exceptionally well, but it also ensures safety and convenience. One of the standout features is that it does not get hot on the outside, eliminating the risk of burns or melted items. This is a huge relief, especially when using it to heat up bathwater or for other purposes.

The versatility of this product is astounding. It can be used for various applications, such as heating up bathwater, warming water for a small pool, or even providing warm water for your dog's bath. I can't help but wonder why I didn't purchase this incredible device sooner. It has undoubtedly saved me a significant amount of money by reducing my reliance on the hot water heater. Now, I only need to use this one tool to fulfill all my water heating needs.

With a power output of 2,000 watts, this immersion water heater is both powerful and efficient. Its submersible design allows for quick and uniform heating of the water. The stainless steel capsule surrounding the heating element is equipped with holes that facilitate water circulation and ensure faster heating. I have been using this device daily for a week now, and I am pleased to report that it has shown no signs of corrosion or failures. Its durability and overall build quality are impressive.

One of the things I appreciate about this immersion water heater is that it heats the water rapidly without being excessively fast. This controlled heating process allows for easier temperature regulation, making it ideal for warming up water in a baby pool before your little one uses it. The added bonus of a built-in thermometer is a delightful feature, providing convenience and peace of mind.

In addition to its primary uses, I have found this heater to be incredibly handy for other purposes as well. For example, I used it to heat a bucket of water for washing my car, eliminating the need to carry the bucket through the house. Furthermore, it has proven to be a game-changer for heating up the kids' pool, ensuring they don't freeze despite hot temperatures. The hose water is typically freezing, but this immersion heater quickly warms it up. I am thoroughly impressed with this product.

I recently purchased the Immersion Water Heater from Amazon and I must say, it exceeded my expectations. I bought it as a temporary solution when my hot water tank stopped working and I couldn't afford a replacement. The price was incredibly affordable and I was pleasantly surprised by how well it worked.

The package came with a thermometer and scouring pad, which was a nice bonus. The heater was able to heat up a 5-gallon bucket of water to over 120 degrees in just 10 minutes. This was perfect for filling up my garden bathtub, as I could then add the bucket of hot water to achieve the perfect temperature. I also appreciated that it could be used in plastic buckets and tubs without any worries of melting or damage.

Another great use I found for this water heater was in my 700-gallon stock tank "pool". I needed a way to warm up the water so that I could swim comfortably. I used the heater for 3 hours every day and it did a fantastic job. It does get quite hot, so I would recommend using a heavy-duty extension cord or plugging it directly into an outlet. I made sure not to run the pump at the same time, as both devices shared an outlet.

I am extremely grateful for this product as it came to my rescue when I moved into a new home without gas and therefore no hot water. It provided me with a way to heat water for bathing and doing dishes. I simply filled up two 5-gallon buckets with water and added the heaters. It is important to note that you should not plug it in until it is completely immersed in water. Once plugged in, it heats up quickly. If you ever find yourself in a similar situation and need a way to heat up water, I highly recommend this product.

Additionally, I found this water heater to be a great solution for my horses. During the winter, I used it to warm up water for them to drink. One of my horses had colicked last winter because he refused to drink cold water. With this heater, I can ensure that the water is at the perfect temperature for them to drink safely.

Lastly, I used this water heater to warm up our inflatable pool. It took about 90 minutes to reach a comfortable temperature that was still refreshing. It also came in handy for washing our truck, tractor, and other items around the barn. The warm water cleans off bugs and mud much quicker than cold water straight from the faucet.