Through this indirect system, you will enjoy the fact that you will have hot water year-round. All you will need to do in order to make it function is to connect it to your house heating system. Are you looking for energy-efficient appliances? If so, you’ve come to the right place. All of these large tanks are capable of delivering a high amount of water at a minimal cost. So, what are you waiting for? Find the best indirect water heaters below.
Our team of experts has spent numerous hour testing and researching through a large amount of indirect water heater reviews in order to handpick the right models worthy of your time and money.
Features To Consider
As you’re ordering this product online, you have to consider the warranty period. The longer the period is, the more beneficial it will be. For example, a company that trusts its product will stand strong beside it and offer you a longer warranty period. The lowest warranty period mentioned in this review is of 1-Year. This means that if you’re not happy with its functionality, you will have the freedom to send the product back and you will receive a full refund.
You want to ensure that the water remains hot for a long period of time even if you keep it on standby mode. This is why it’s important for the water heater to be designed with thick insulation properties. You will notice that the majority of the heaters will lose less than 1-degree Fahrenheit per hour. This will have a positive impact on your energy bill as well.
If you don’t have a lot of time on your hands to worry about cleaning it and maintaining it to proper standards, you want to ensure that it has cleaning and descaling properties. Thus, you don’t have to clean it by hand if you don’t want to. If the water heater doesn’t have cleaning properties, you don’t have to worry. It means that the unit has been made from an excellent material that doesn’t lose quality over the years.
Best Overall: HTP PH76-60 Phoenix Heater
The reason why we’ve classified this as the best indirect water heater is due to the fact that you will be provided with the same high efficiency for many years to come. In fact, it has been noted that this model has a capacity of up to 97% thermal efficiency. As well as, it can also reach 3:1 turndown ratio. Thus, it consumes less and it produces more. It’s important to mention that this heater doesn’t affect the water pressure which means that you can enjoy as many hot showers as you wish.
What stands out about this model is that it’s not only one of the best that’s currently on the market, it’s also durable. The product has been made from stainless steel, PVC, CPVC, and ULC S636 which means that it’s thick and resistant. Therefore, it’s highly unlikely for it to develop rust or corrosion due to the environment that you place it in.
Even though this seems like a product that can only be handled by professionals, you should know that it’s very easy to keep up with and maintained. For example, the unit has been crafted with flame monitoring so you will always know what is going on and it removes the need for second-guessing. Also, the spark ignition will give you the freedom to turn it on manually whenever you need it the most.
You will, in fact, be able to save a lot of money by considering this model. It comes with top port connections, installation manual, condensate cartridge, pressure relief valve and a temperature valve. All in all, all of the accessories you need are included in the box at no extra price.
What stands out about this product is the fact that it has been awarded an energy star rating. This means that you can rely on it to work at a minimal rate throughout the years. Even though you will make an investment at the beginning, you will save a lot of money throughout the seasons.
- Designed with flame stabilization
- It reaches a maximum temperature of 160-degrees Fahrenheit
- It works on natural gas
- Controls are designed with animated pictures
- Best for light-duty use
- Limited warranty period
Best For Insulation: Burnham AL35SL Alliance
This is another one of the best indirect water heaters due to the fact that you can use it for domestic and commercial needs. It has been engineered with thick polyurethane foam which means that it does an excellent job at retaining heat and minimize the amount of energy it consumes. In fact, it has been noted that there’s around 1-degree loss per hour. This is a feature that no many models can boast with. Similarly, to the other models mentioned, this is another unit that doesn’t decrease the water pressure. Thus, your whole family can enjoy as many long showers as they wish.
Additionally, you will find it easy to install this system by yourself as it has accessible connections at the top of the tank. Thus, you can check up on the functionality of the model without draining it first. Equally important, this unit works together with your boiler which is excellent news for those that live in states where water hardness and chlorides are a problem. These issues will not affect this particular model even if it does for the other units.
It’s important to highlight that this item has been made in the United States. This means that it will meet your high expectations with ease. As well as, the customer service is one of the best on the market. The customer support team is always available to deal with any concerns you may have about it. By considering this model you will have the freedom to choose a limited lifetime warranty if you wish.
Reading numerous indirect water heater reviews, we’ve noticed that this model is often praised due to the fact that it has a fast operation. It has been claimed that you will have access to hot water within maximum 3 seconds. This is excellent news for those that want to use this system for showers.
In case this model is kept on standby for a long period of time, you don’t have to worry about the water going cold. As it can lose 1-degree per hour, this won’t have a negative effect on the temperature of the water even if you take a long time before using it again. The amount is so low that you will barely feel anything.
- Easy to install
- Designed with extra insulation
- Low heat loss
- It has an energy-efficient operation
- It can hold up to 35-gallons
- Best to insulate the water pipes as well
Best For Simplicity: Burnham AL35SL Alliance
This model has a capacity of up to 45-gallons. Similarly, to the other high-quality models, this is another unit that will lose 1-degree per hour. As well as, it has been made from 316L stainless steel which means that it’s unlikely that it will get affected by developing rust or corrosion due to extensive use. Thus, you will be ensured the same high efficiency for as long as you have this unit.
The reason why this can be classified as the best indirect water heater is that you will have the option to choose between 5 different gallon sizes. Therefore, you can use the same brand if you need commercial needs and household uses. By considering this model you will be covered by 10-Years limited warranty. Hence, you don’t have to worry about additional costs or costly repairs.
The reason why this is a popular choice to people all over the world is that it has been strategically designed with TankEnvironmentally. This means that the insulation it uses is safe for the environment and for yourself regardless of how often you use the product. This is great news if you want to use it extensively without putting your health in danger. The detailed user manual has been made by specialists so you can have every information you need.
Due to the fact that it has been made from thick steel, you can rest assured that it will maintain the same efficiency for numerous years. In fact, during research, we’ve found that this unit is likely to last for more than 11-years. After all, the impressive warranty has you covered.
This model has a capacity of up to 45-gallons. This is more than enough hot water for long showers for up to 6 people. Therefore, you don’t have to use it for light-duty if you don’t want to.
- It doesn’t require thorough maintenance
- Numerous sizes available
- Excellent warranty period
- Made from thick steel
- It works with the help of the boiler only
- It’s heavy and tall
Best For Efficiency: Triangle Tube SMART80
Without a doubt, this can be considered as one of the best indirect water heaters. Just like all of the high-quality models mentioned in this review due to the fact that it has been engineered with excellent insulation. The 2-inch polyurethane foam will prevent heat loss from the water which means that the same temperature will be kept throughout numerous hours. Thus, you can keep it on standby for as long as you wish. Of course, you have the freedom to use it for household and commercial use if you need to do so.
The reason why you should consider this product is because it has been highlighted that this unit will provide the lowest pressure drop out of all of the other models on the market. It comes at an affordable price for all pockets which means that you don’t have to worry about investing a lot of money into it. Also, it’s easy to set up by beginners which means that you won’t spend a lot of time meaninglessly before you can use it.
You can purchase in confidence due to the fact that the brand is reliable. In fact, the company that has produced this indirect water heater has been around for 60 years. The product has been made in the US based on high standards which means that it won’t let you down. It also has an energy-efficient operation which means that your energy bill will not be affected by using this unit constantly.
You don’t have to worry about spending many hours on maintenance due to the fact that it’s self-cleaning. Thus, you will be able to store it wherever you want without worrying that scale build-up will have a negative impact on its functionality.
Talking about scales, even though this product does develop scale due to hard water, you don’t have to worry about it. The unit has the ability to descale itself which means that it doesn’t need thorough cleaning with chemicals that can be damaging to your health.
- It doesn’t require thorough maintenance
- Made with thick insulation
- It provides the lowest pressure drop
- Excellent customer service
- Difficult to set it up by beginners
- Limited warranty period
Best For Reliability: BoilerMate Classic WH-41Z
This is another one of the best indirect hot water heaters due to the fact that it has been made with a thick triple shell. This means that it has the ability to maintain superior operation for as long as you wish. In fact, the reason why we’ve mentioned this model is that it has been crafted with polyethylene inner liner. It’s high-density which means that the temperature drop is low even if you keep it on standby for a long period of time.
It has an efficient insulation which means that it’s simply one of the best on the market. The temperature is so practical that an electromechanical thermostat is included at no extra price. This means that you will know the exact temperature without second-guessing. As well as, you will also receive a drain and T&P valve. This means that you don’t have to invest further in the product if you don’t want to.
This is another model that you can consider with confidence because you will be covered by 1-year warranty. The company has you protected against any additional costs. Additionally, you can remove the exchanger to clean it easily and properly. As well as, it also provides easy maintenance when you need to check up on it.
You don’t have to hide it away due to the fact that it has been designed with a gloss finish look. This means that it won’t bring unnecessary attention to itself. The finish will protect it from getting easily scratched or damaged. The excellent look will be maintained for many years to come.
As mentioned, you will receive a temperature thermostat at no extra price which means that it removes the need for second-guessing. The valves and the drain mean that you don’t need the help of a professional to set it up as you will have every tool you need.
- It has heat transfer efficiency of up to 40%
- Easy to maintain and to clean
- It maintains high water pressure
- It has a gloss finish
- Customer service could be improved
- Limited warranty period
Final Review of the Best Indirect Water Heaters
In case you believe that your water heater is overused and is no longer efficient, you have come to the right place.
We have reviewed the models that are worthy of your time and hard-earned money which means that you can rely on them for a long period of time. By using such heater you will be ensured hot water for the whole year regardless of the weather outside.
As you may have seen, there are numerous types of water heaters on the market, but without a doubt, indirect water heaters are the best choice you can make for your pockets regardless of their size.
You will be able to save a large amount of money by using such heaters due to the fact that they have an energy-efficient operation. This means that you will receive all of your money back regardless of the investment you are making at the beginning.