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6 Best Direct Vent Water Heater Reviews in 2022


Water heaters are one of the most essential accessories in a house, especially when winter comes around and tap water is too cold to touch, and far from being usable for regular bathroom activities. Therefore, you should consider getting a powerful water heater right now before the winter hits the lowest temperature.

If you don’t already know, standard water installed in our homes has a share of almost 20% of our monthly electrical budget, second only to the centralized heating or cooling system of our homes. Since the requirement for warm water increases as the surrounding temperature decreases, you should consider going with an efficient hot water accessory like a direct vent water heater. Before you actually buy one, here are some things that you should keep in mind.

  • GPM Rating: GPM stands for gallons per minute and it is a standard measurement of water flow available with a water heater. The GPM rating of a water heater indicates the amount of hot water you can get every minute once you start the heater. As you can imagine, it is a pretty important factor as it deals with the usage capacity and overall compatibility of the unit with your application.

  • BTU Capacity: BTU stands for British Thermal Units and it is also a commonly known unit for measuring the heating capacity of an accessory. For water heaters, it represents the heating capacity of the water heater. Thus, you can get an approximate idea about whether the water heater you are buying for your home or office is a perfect fit for the task or not. To put it in simpler words, 1 BTU is the energy needed for increasing the temperature of 1 pound of water by 1 degree Fahrenheit.
  • Energy Efficiency: Right now, you can find a lot of electronic devices that are much more efficient compared to their previous generation and water heaters are not an exception for that. If you are going to use the water heater on a daily basis and quite frequently, it is important to get your hands on an efficient machine to save yourself from expensive bills later on.

While the factors mentioned above are enough to decide which option is a perfect choice for your home, it is still a difficult task since the market is flooded with a variety of choices available for a water heater. Since we are only focusing on direct vent water heaters, the job is a bit simplified as it narrows down the options you will have to browse. We have further narrowed down the best option and offered them detailed specifications in our guide today. And to help you make a perfect choice, we have also provided a Buying Guide for the best direct vent water heater that you should not miss out on.

Best Direct Vent Water Heater 2022

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Best Direct Vent Water Heater Reviews

1. Rheem NOx Direct Vent Tankless Heater

Rheem NOx Direct Vent Tankless Heater

If you are sure that you need a high-performance direct vent water heater, look no further. We are bringing one of the most powerful options available on our list at the top to make your choice easier.

In the 1st place, we are putting the Rheem RTG-84DVLN direct vent water heater. This unit offers about 8.4 GPM water flow rate which is quite high considering it is a tankless water heater. On top of that, it uses natural gas as a primary fuel source which is readily available in the market. With the Rheem RTG-84DVLN, you will get about a 35-degree rise in ambient water temperature even at such a high flow rate.

The Rheem RTG-84DVLN also offers the best thermal capacity compared to other options on this list. This unit is rated for about 199900 BTU capacity which should be enough for heavier applications. And, you can also access this water heater remotely with the help of the UMC-117 remote control included with the unit. To help you with the installation, the package also includes a 10 feet long thermostat wire along with other essential accessories.

Best Features

  • Gas-powered direct vent water heater
  • Offers up to 8.4 GPM water flow rate
  • It has a thermal capacity of 199900 BTU
  • Comes with a UMC-117 remote control

Pros

  • Best option for heavy-duty applications
  • Thermal capacity is best in class
  • Low NOx version for reduced toxic emissions

Cons

  • Very expensive option for basic needs

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2. Takagi Condensing Direct Vent Tankless Water Heater

Takagi Condensing Direct Vent Tankless Water Heater

Takagi is also offering a premium tankless water heater which can be a perfect option for compact installation spaces. Takagi is a Japanese company that excels in a variety of products including water heaters.

In the 2nd position, we have the Takagi T-H3M-DV-N Tankless Water Heater. It is rather a fresh option for a tankless water heater that uses the existing half-inch supply lines available in your homes for installation and saves you from the trouble and expenses of installation. You can also connect the Takagi T-H3M-DV-N Tankless Water Heater with a dedicated water tank to get the water flow you need.

Without that, the Takagi T-H3M-DV-N Tankless Water Heater is capable of offering up to 6 GPM water flow thanks to its thermal capacity ranging up to 120000 BTU. Even with such a high BTU rating, this option offers an efficient heating system and stands as a suitable option for 2 bathrooms in a single house. The best part about this brand is that it offers a 15 year long warranty on the heat exchanger along with a 5 year warranty on other parts. Therefore, you are definitely buying a reliable option if you are going with the Takagi T-H3M-DV-N Tankless Water Heater.

Best Features

  • Gas-powered direct vent water heater
  • Offers up to 6 GPM water flow rate
  • It has a thermal capacity of 120000 BTU
  • Comes with 15 year warranty on the heat exchanger

Pros

  • Therma capacity is pretty good
  • Can be used for 2 bathrooms at once
  • Energy-efficient option with a reliable warranty period

Cons

  • It does not have remote control feature

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3. EZ Deluxe Tankless Water Heater

EZ Deluxe Tankless Water Heater

If the options we have seen so far seem a bit expensive, worry not. EZ Tankless is bringing a great choice for a direct vent water heater that offers a great balance between budget and performance.

The EZ Tankless Deluxe Water Heater is also a great option if you don’t want to spend a fortune on a direct vent water heater. This offers up to 3.4 GPM water flow rating with a thermal capacity of 87500 BTU so it becomes an ideal option for household applications. Once turned ON, the EZ Tankless Deluxe Water Heater can easily offer enough warm water for one or 2 baths within a short time.

You can also control the parameters of the EZ Tankless Deluxe Water Heater via the handy LCD control panel provided on the front. Just like other premium options, the EZ Tankless Deluxe Water Heater has a dual-chamber design for separate intake and exhaust, ultimately increasing the efficiency of the heater. At 3.4 GPM water flow rate, this direct vent water heater can increase the water temperature by up to 45 degree Fahrenheit above its ambient temperature level.

Best Features

  • Gas-powered direct vent water heater
  • Offers up to 3.4 GPM water flow rate
  • It has a thermal capacity of 87500 BTU
  • Dual chamber design for intake and exhaust

Pros

  • Features an LCD control panel
  • Raises the water temperature by up to 45 degree Fahrenheit
  • Comparatively cheaper than a few other options

Cons

  • Thermal capacity is quite low in comparison

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4. Rinnai EX11CTP Space Heater Wall Furnace

Rinnai EX11CTP Space Heater Wall Furnace

In the winter season, you also need a decent room heater along with a decent water heater. Thus, we are including the space heater from Rinnai on our picks. Rinnai also has a couple of great options for tankless water heaters that you should check out.

The Rinnai EX11CTP is a rather different product from what we have been looking for so far. This is a space heater or a wall furnace as opposed to a direct vent tank heater. But, it is an equally important accessory when winter hits its lowest point in the season. The Rinnai EX11CTP also works on propane gas and offers a thermal capacity of about 11000 BTU. Therefore, you can expect an approximate coverage area of about 1100 sq. ft. once you install this unit.

The Rinnai EX11CTP Space Heater features stainless steel bunsen burners that create a warm air outlet, offering warmth throughout the room. It also has a selection of smart features that you will definitely like. Since this is an energy-efficient option, it works with an electronic spark ignition system and comes with a 7-stage gas valve to offer optimal performance. The electronic thermostat on the Rinnai EX11CTP Space Heater offers a temperature range of 60°F to 80°F, offering an ideal living condition.

Best Features

  • Gas-powered space heater
  • It has a built-in self-diagnostic system for safety
  • It has a thermal capacity of 11000 BTU
  • The electronic thermostat offers a 60°F to 80°F temperature range

Pros

  • Great option to warm up the room in winters
  • It has an approximate coverage area of about 1100 sq. ft.
  • Features multiple smart features

Cons

  • Initial investment is very high

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5. Noritz NRC71DVNG Direct Vent Tankless Water Heater

Noritz NRC71DVNG

If you are familiar with the basic and affordable options for a direct vent water heater, let us move on to the premium range options designed for heavy usage. One such option from Noritz certainly catches the eye with its specifications.

The Noritz NRC71DVNG is also a great option for a direct vent indoor tankless water heater. Unlike most other options, this is a heavy-duty model that offers a water flow rate of about 7.1 GPM. Therefore, you can use the Noritz NRC71DVNG for a versatile range of applications apart from basic bathroom activities. Even with such a high GPM rating, the Noritz NRC71DVNG offers a thermal capacity of about 157000 BTU, making it the right choice for extremely cold regions.

Despite its powerful specifications, the Noritz NRC71DVNG offers a compact and space-saving design, having a footprint of only 6.7 x 13.8 x 23.6 inches. And, it is also an environmentally friendly option as Noritz promises low NOx emissions from the machine. The Noritz NRC71DVNG can be vented using the standard 3 inches 40/80 PVC pipes. Plus, there are tons of adaptors and accessories supported by this unit that allow multiple types of venting options.

Best Features

  • Gas-powered direct vent water heater
  • Offers up to 7.1 GPM water flow rate
  • It has a thermal capacity of 157000 BTU
  • Supports multiple types of venting options

Pros

  • Measures only 6.7 x 13.8 x 23.6 inches in size
  • Highly energy-efficient option
  • Supports high water flow rate

Cons

  • Very expensive option compared to other choices

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6. Ashley Hearth Direct Vent Propane Heater

Ashley Hearth Direct Vent Propane Heater

For the last, we have saved the most affordable option available in the market for a direct vent propane heater. This propane heater is made by Ashley Hearth, a well-known brand offering home accessories since 1905.

The Ashley Hearth DVAG11L is our last choice for the best direct vent propane heater. Similar to most other options, it also uses propane as the fuel source to offer a thermal capacity of up to 11000 BTU, which is sufficient for small homes. So if you are living alone and need a space heater for your house, this is the space heater for you. Even with the given thermal capacity, the Ashley Hearth DVAG11L is capable of offering a coverage area of about 375 sq. ft. which is pretty good.

The sealed burn system of the Ashley Hearth DVAG11L makes it a perfect option for bedrooms and living spaces. It also has a built-in piezo lighting system to quickly start the unit when needed. After buying the Ashley Hearth DVAG11L, you won’t have to browse the market for any additional installation accessories since all necessary parts are included within the package. The Ashley Hearth DVAG11L also has a handy knob at the top to let you quickly manage the heating level within preset conditions.

Best Features

  • Gas-powered direct vent water heater
  • Easy-access knob to manage temperature level
  • It has a thermal capacity of 11000 BTU
  • Comes with all necessary accessories

Pros

  • It has a coverage area of 375 sq. ft.
  • Works with liquid propane gas
  • Approved to be used to modular homes

Cons

  • Coverage area might be too low for large families

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Buying Guide For The Best Direct Vent Water Heater

If you are noticing problems with your current water heater or thinking about replacing it for quite some time due to expensive electricity bills, worry not. You have arrived at the right place since we are discussing the best direct vent water heaters which we could find in the market right now. A direct vent water heater uses a special type of coaxial venting installation with separate chambers for intake and exhaust.

With this design, manufacturers can design a direct vent water heater within a very compact footprint. If you get your hands on a decent direct vent water heater, you will notice significantly lower heating costs compared to its competitors. But, it is only possible if you buy the right option according to your needs. And to help you with that, we are presenting this buying guide for the best direct vent water heater. In this guide, we will tell you about some of the most important features and specifications of a direct vent water heater so that you can easily make up your mind about which option you should buy.

1. Type of Water Heater

Before you replace your current water heater or buy a new one for your house, you should first check what types of water heaters are available in the market and which option amongst them can be suitable for your needs. Right now, the most popular options present in the market are:

Storage tank Water Heaters

Storage tank water heaters are the most common type of water heaters in the market right now. But, you should also consider the fact that these options are slowly getting obsolete as there are new and improved types of water heaters now. In these water heaters, there is a built-in water tank where water is heated before you can use it. Even though this is a more reliable option, it is comparatively less energy-efficient and costs more in terms of running costs.

Tankless Water Heaters

Tankless water heaters are the up-and-coming water heaters that are slowly becoming a preferred choice for many users. As the name indicates, tankless water heaters do not need to store water before they can heat it. Instead, it encompasses heating coils on the inside that heat up the water based on the user’s demand. Since it does not have to heat up a lot of water at once, you can imagine how it is a more energy-efficient option. The only drawback with this type of water heater is the limited GPM rating.

Hybrid Water Heaters

Hybrid water heaters are also quite efficient in terms of energy usage as they capture heat from the air and transfer it to the water, increasing its temperature. A decent hybrid water heater might cost significantly more compared to a basic electric water heater. But, it also manages to save about 60% energy while offering the same performance. But, you cannot rely on hybrid water heaters as they do not work well in cold weather conditions. For these heaters to perform optimally, the surrounding temperature should be within the 40°F to 90°F range.

Solar Water Heaters

If you wish to go completely environmentally friendly, then solar water heaters are the perfect option for you. But, you should also keep in mind that these water heaters are significantly larger in size and require an expensive initial investment. A solar water heater has a room-mounted unit consisting of a bed of solar cells that generate energy from sun rays and transfers the heat to a heating medium. Then, the heating medium is used to increase the water temperature via indirect heat transfer. It also has the drawback of not performing optimally in cloudy or cold regions.

2. Energy Efficiency

New-generation water heaters like direct vent water heaters are much more energy-efficient compared to traditional models. While an energy-efficient model might cost a lot in the beginning, it will be worth the investment as it can save you a lot in terms of electrical bills in the long run. Therefore, you should check the energy efficiency rating on the direct vent water heater before you make your choice.

Fortunately, all of the options that we have included on our list today offer a high energy efficiency rating. Therefore, the energy needed to operate any of these units to heat up a certain amount of water is definitely lesser than that of a traditional option for the same task. You can get an idea about the energy efficiency of a particular direct vent water heater by checking its energy-star rating. The higher this rating is, the more energy-efficient the product will be.

3. Water Flow Rating

A huge drawback of tankless water heaters is the limited GPM or gallons per minute rating which was not a problem with old water heaters with a tank. In older options, you could store a lot of water inside a tank and heat it up at once. After that, you can use the water as you please, whether for a short time or throughout the day. In the case of a tankless water heater, there is a specified GPM or gallons per minute rating provided to all heaters that tell you about the rate at which you will get hot water.

If you increase the flow rate above the specified GPM level, you probably won’t get the desired temperature with the water coming out of the system. On most tankless water heaters, you will find the GPM rating which makes it easier to understand and check whether it is applicable for you or not. If you are using the tankless water heater for basic bathroom activities, then a 3 to 6 GPM tankless water heater can easily suffice for your needs. On the other hand, if you are connecting multiple outlets to the heater or using it for other applications where a higher water flow is needed, you should consider going with a 7 to 9 GPM water flow tankless water heater.

4. Warranty

Checking the warranty period is a very important step before you buy an accessory for your home, especially an expensive accessory like a direct vent water heater. You never know what can go wrong with these devices and when you will find yourself looking for a replacement for a water heater that you bought only a couple of months ago. Well, it won’t be the case if you are buying a direct vent water heater that has a long warranty period.

Within the warranty period, the brand takes full responsibility for any internal damage to the machine and offers you free repairing services if needed. You may also avail of free-of-cost replacement of a certain internal part if the damage is beyond repair. Considering you are investing a significant sum on a direct vent water heater, you should definitely check out the warranty period as well as the factors that are covered within the said warranty period from the brand.

Frequently Asked Questions

Q. What is a direct vent water heater?

A direct vent water heater is basically a gas heater that draws fresh air from outside and mixes it with propane or natural gas. The mixture is then combusted into a combustion chamber which ultimately increases the temperature of the water. Once the combustion cycle is completed, the exhaust gasses are released into the atmosphere and the cycle continues. These options are perfect for installation where there is not enough ventilation available in the room.

Q. What are the advantages and limitations of direct vent water heaters?

Just like any other type of water heater, direct vent water heaters also have a couple of advantages and limitations that you should be aware of before you make your decisions. While the advantages are certainly beneficial for a lot of users, the limitations can be a deal-breaker for some.
Advantages
*Direct vent water heaters have a low running cost.
*These options are generally more efficient than traditional water heaters.
*In comparison, direct vent water heaters make less noise than a power vent water heater.
Limitations
Proper piping and venting installation is necessary for installing a direct vent water heater.
The initial cost of the unit itself is quite expensive.

Q. Do I need a direct vent water heater?

If you live in a rather cold region, then you will probably have to go with a direct vent water heater over other choices. If you can install a chimney or other ventilating accessory along with the direct vent water heater, it can be the right choice in terms of energy efficiency and performance. Since these options are operated over natural gas, it won’t affect your monthly electricity bill, which is an important benefit for a lot of buyers.

Conclusion

We hope that you have managed to find the perfect direct vent water heater available within your budget on our list today. Since we have included a variety of options on our list, it definitely makes it easier to make a choice and select the unit that offers you the specifications you need the most. We have also mentioned a few pros and cons of each direct vent water heater so that you can make a doubt-free choice. If you are confused between 2 or more options, kindly check out our buying guide for the best direct vent water heaters before you make your decisions. We also have a few recommendations for you just in case, if you need a second opinion.

As you may already know, factors like GPM rating and BTU capacity matter a lot for a direct vent water heater. So if you are looking for a heavy-duty option for larger applications, we will suggest going with the Rheem RTG-84DVLN. This is a tankless natural gas water heater that can provide up to 8.4 gallons of water per minute with a temperature increase of about 35-degrees from its initial temperature. You can also access the Rheem RTG-84DVLN remotely with the included UMC-117.

If you also need a decent space heater, the Ashley Hearth DVAG11L is a perfect option for small applications and household installations. It offers 11000 BTU thermal capacity and works on propane as the primary fuel source. This unit has a coverage area of about 375 sq. ft. which is sufficient for a standard room. For the Ashley Hearth DVAG11L, you won’t need any complicated venting installation or setup. The heater comes with a complete kit of what you will need at the time of installation.

If you are looking for a perfect balance between price and performance, consider checking out the EZ Deluxe Tankless Water Heater. It is a rather affordable option compared to the premium options in the market and offers about a 3.4 GPM water flow rate. Thus, it is enough to provide for a small family in terms of regular bathroom water usage. As for the thermal capacity, the EZ Deluxe Tankless Water Heater has an 87500 BTU rating, which is pretty great at this price range. It also has a dual-chamber design like most other direct vent water heaters for added efficiency.



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