Best Condensing Tankless Water Heater (2024 Update)
If you’re looking for an energy-efficient solution to provide hot water for your daily use, you might want to consider investing in a condensing tankless water heater. This type of water heater has the ability to heat water on-demand without needing a storage tank, making it an ideal choice for small homes or apartments with limited space.
Before making a purchase, it’s important to consider certain factors such as the size of your household, the number of bathrooms, and the temperature of your local climate. These factors will determine the size of the condensing tankless water heater you need, so it’s vital to do your research and choose one that meets your requirements.
Some important questions to consider before investing in a condensing tankless water heater are; What brand of water heater is the most reliable? Which model has the highest Energy Factor rating? How easy is it to install and maintain? By doing your research and finding the answers to these questions, you'll be able to make an informed decision that will save you money on your energy bills.
In conclusion, a condensing tankless water heater is an excellent investment for anyone looking to reduce their energy usage and environmental footprint. With the right research and considerations, you can find the best condensing tankless water heater that meets your needs and budget. Remember to always choose a reputable brand and have a professional plumber install it to ensure the maximum lifespan and efficiency of your new water heater.
10 Best Condensing Tankless Water Heater
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It is ideal for providing hot water on demand and efficient indoor installation using natural gas for residential or commercial use.
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This product is ideal for providing hot water in indoor spaces using natural gas with high efficiency and a large flow rate.
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It is ideal for providing hot water quickly and efficiently for indoor use.
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The product is ideal for indoor installation and provides high efficiency propane heating with 11 gallons per minute capacity.
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5
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It's ideal for providing instant hot water for indoor use using propane fuel.
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6
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Ideal for providing hot water with high efficiency for outdoor installations, capable of up to 9 gallons per minute.
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7
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It is ideal for providing on-demand hot water to larger households or commercial spaces.
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8
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The product is ideal for indoor installation with a high efficiency propane tankless water heating system.
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9
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Ideal for providing continuous hot water in outdoor areas using natural gas at a flow rate of 6.5 gallons per minute.
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10
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This product is ideal for providing hot water quickly and efficiently for indoor use with natural gas.
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1. Rinnai V75in Tankless Hot Water Heater, 7.5 Gpm, Natural Gas, Indoor Installation
Introducing the Rinnai Tankless Hot Water Heater, the latest in non-condensing technology that is designed to conserve energy and provide a cleaner layout for easier service and installation. The RE180iN model is the perfect solution for those who want to save energy and ensure they never run out of hot water.
The tankless hot water heater is compact and only the size of a small suitcase, making it a great fit for a wide variety of spaces. Despite its small size, it can provide up to 7.5 gallons per minute, which is enough to run up to 5 fixtures at once. This means you can enjoy hot water without worrying about running out, even during peak usage times.
The Rinnai Tankless Hot Water Heater is designed to be smart and durable. It comes with enhanced scale detection that helps prevent serious, long-term damage to the unit, which can extend its lifespan. Additionally, it includes a 15-year warranty for the heat exchanger, a 5-year warranty for labor, and a 1-year warranty for parts, which gives you peace of mind knowing that your investment is protected. If you want to control the heater via WiFi, you can purchase the Controlr module separately.
It is recommended that a qualified technician install your Rinnai Tankless Hot Water Heater. You can visit the Find a Rinnai PRO page on the Rinnai website to locate a qualified technician in your area. This ensures that your heater is installed properly and safely.
To find the right Rinnai Tankless Hot Water Heater for your home, you can consult the product guides, manuals, energy guide, and warranty information available on the Rinnai website. You can also check the Ground Water Temperature Map to determine if this heater is optimal for your region.
2. Efficient Gas Tankless Water Heater – Takagi T-H3
The product being described is a tankless water heater that offers several benefits to its users. It provides endless hot water on-demand, making it a reliable and convenient source of hot water. The compact size of the heater makes it space-saving and ideal for use in small areas.
One of the most significant advantages of the water heater is its energy conservation feature. It uses computerized safety features that eliminate the need for a pilot light, making it more energy-efficient. Additionally, the safety features of the heater are top-notch. It has freeze, overheat, surge protection, and troubleshooting diagnostic codes to ensure the safety of its users.
Moreover, the tankless water heater meets the 2012 SCAQMD Rule 1146.2 for Ultra-Low NOx emissions, making it an environmentally friendly option. The primary heat exchanger of the heater utilizes commercial-grade copper alloy, which provides 25 times better heat transfer than stainless steel.
The heater comes equipped with integrated controls and a power cord as standard features. The controls are computerized, making it easy to use and operate the device. The power cord ensures that the heater can be plugged into any standard electrical outlet without the need for additional wiring.
3. Rinnai Rucs75in Tankless Hot Water Heater, 7.5 Gpm, Natural Gas, Indoor Installation
Introducing the Endless Hot Water Heater, the perfect addition to any home seeking a reliable and energy-efficient solution for their hot water needs. With the ability to provide unlimited hot water flow throughout the house, this compact and durable unit is easy to install and comes highly recommended for professional installation.
Designed with energy and space efficiency in mind, the Endless Hot Water Heater features a space-saving design that conserves energy by heating only when necessary. This means that you can enjoy all the hot water you need without worrying about wasted energy or high utility bills.
With a high-performance 7.5 GPM hot water flow rate, the Endless Hot Water Heater provides a powerful and constant stream of hot water, ensuring optimal water pressure for all your needs. And with multiple venting options available, including PVC/CPVC using the Ubbink Concentric to Twin Pipe adaptor, installation is a breeze.
But that's not all – the Endless Hot Water Heater also comes with a 12-, 5-, and 1-year residential factory warranty for the heat exchanger, parts, and labor respectively, so you can rest assured that you're making a wise investment that is guaranteed to last.
4. Rinnai Super High Efficiency Propane Water Heater
The tankless hot water heater with Smart-Circ Intelligent Recirculation is an innovative and energy-efficient solution for your daily water consumption. This water heater comes with Smart-Circ technology that learns your household's water usage patterns and schedules the pump and recirculation accordingly, ensuring optimal energy efficiency and convenience. With this technology, you'll never have to run out of hot water again as it will provide you with hot water on demand.
This compact tankless gas water heater from Rinnai is only the size of a small suitcase, but it can provide up to 11 gallons per minute, allowing you to use up to seven fixtures simultaneously. This feature makes it an ideal option for households with high water usage, and it can easily fit in small spaces due to its multiple venting options.
The water heater's smart, durable design and excellent warranty make it a reliable and long-lasting option. The water heater's heat exchanger comes with a 15-year residential guarantee, labor has a 5-year guarantee, and parts have a 1-year guarantee. Additionally, you can control this water heater with a Controlr module that has WiFi control capabilities (not included).
It is important to note that professional installation is recommended for this tankless water heater. To find a qualified technician in your area, visit the Find a Rinnai PRO page on their website. Rinnai does not recommend installing this water heater without a technician.
You can easily find the right Rinnai product for your home by checking their product guides, manuals, energy guide, warranty information, videos, and tables. Additionally, their Ground Water Temperature Map can help you determine if this heater is optimal for your region.
5. Rinnai Rl94ip Tankless Hot Water Heater, 9.8 Gpm, Propane, Indoor Installation
The Rinnai tankless hot water heater offers a unique Circ-Logic technology, designed to adapt to your daily hot water usage patterns. If you need a non-condensing, compact water heater that provides a continuous supply of hot water, the Rinnai propane water heater is exactly what you need. It can deliver up to 9.8 gallons of hot water per minute, which is enough for six fixtures to run simultaneously.
In terms of durability and reliability, the Rinnai propane water heater is an excellent choice. It comes with a 12-year warranty for residential use, and a 5-year warranty for commercial use. The heat exchanger, labor, and parts are covered for 5 years, 5 years, and 1 year, respectively. Moreover, the Rinnai's Controlr module allows for WiFi control, although it is not included in the package.
It is crucial to have a qualified technician install the Rinnai propane water heater to ensure proper installation and avoid any potential hazards. On their website, you can locate a Rinnai PRO technician in your area. The website also provides product guides, manuals, energy guides, warranty information, as well as videos and tables to assist you in choosing the best tankless water heater for your home. You can also check their Ground Water Temperature Map to see if the Rinnai propane water heater is optimal for your region.
6. Rinnai Ultra Efficiency Gas Water Heater
Experience superior energy efficiency and convenience with the Smart-Circ Intelligent Recirculation tankless hot water heater. Featuring Smart-Circ technology, this water heater learns your water usage patterns and schedules pump and recirculation accordingly. This results in energy savings and convenience as you never have to wait for hot water.
This tankless hot water heater from Rinnai is compact and outdoor condensing, making it the perfect space-saving solution for your hot water needs. Despite its small size, it can provide up to 9 gallons per minute, allowing up to 6 fixtures to run simultaneously.
The Smart-Circ Intelligent Recirculation tankless hot water heater has a smart and durable design, with no venting required. This makes it easy to install in a wide array of spaces. Additionally, it comes with a 15-year residential guarantee for the heat exchanger, a 5-year labor guarantee, and a 1-year parts guarantee. Please note that the Controlr module for WiFi control is not included.
To ensure proper installation, Rinnai recommends finding a qualified technician in your area to install your tankless water heater. Visit the Find a Rinnai PRO page on their website to locate a professional technician. They advise against installing a water heater by yourself.
Rinnai offers a wide range of tankless water heaters, and their product guides, manuals, energy guide, warranty information, videos, and tables can help you find the perfect one for your home. Check their Ground Water Temperature Map to see if this heater is optimal for your region.
7. Rinnai Rl75in Tankless Hot Water Heater, 7.5 Gpm, Natural Gas, Indoor Installation
The Rinnai Tankless Hot Water Heater with Circ-Logic technology is the perfect solution for those who don't want to run out of hot water. With recirculation patterns that match your habits, this non-condensing technology offers a reliable and efficient way to provide hot water to your home. For those who prefer a compact size, the Rinnai RE160iN model is available and offers the latest in non-condensing technology that speeds up service and installation.
This tankless gas water heater is only the size of a small suitcase and can fit in a wide variety of spaces, yet provides up to 7.5 gallons per minute, which is enough for up to five fixtures at once. It's smart, durable design includes a 12-, 5-, and 1-year residential guarantee and a 5-, 5-, and 1-year commercial factory warranty for heat exchanger, labor, and parts, respectively. For added convenience, the Controlr module allows for WiFi control (not included).
While installation of this tankless water heater is possible for those with experience, professional installation is recommended. Rinnai offers a "Find a Rinnai PRO" page on their website to locate a qualified technician in your area to install your tankless water heater.
To find the right tankless water heater for your home, Rinnai offers a variety of resources such as product guides, manuals, energy guide, warranty information, videos, and tables. Additionally, their Ground Water Temperature Map can help determine if this heater is optimal for your region.
8. Rinnai Smart Propane Water Heater – Efficient Indoor Installation
The Rinnai tankless hot water heater is an innovative and efficient solution for your hot water needs. It is equipped with Smart-Circ Intelligent Recirculation technology that learns your water usage patterns and schedules pump and recirculation accordingly, providing superior energy efficiency and convenience. You can always count on having hot water with this compact tankless gas water heater, which is only the size of a small suitcase but provides up to 9 GPM, enabling up to 6 fixtures to be used simultaneously.
The Rinnai tankless hot water heater is designed to be both smart and durable, with multiple venting options that allow it to fit a wide array of spaces. It comes with a 15-year residential guarantee for the heat exchanger, a 5-year guarantee for labor, and a 1-year guarantee for parts, ensuring long-lasting performance. The Controlr module is also available for WiFi control, although it is not included in the package.
For your safety and convenience, it is recommended that a qualified technician install your tankless water heater. To find a certified Rinnai PRO in your area, visit the Find a Rinnai PRO page on the company website. Attempting to install the water heater without professional help is not recommended, as it may result in damage or malfunction.
To find the right tankless water heater for your home, Rinnai provides product guides, manuals, energy guides, warranty information, videos, and tables. You can also check the Ground Water Temperature Map to determine if this heater is ideal for your region. With its cutting-edge technology, compact design, and durable construction, the Rinnai tankless hot water heater is an excellent choice for anyone seeking a reliable and efficient source of hot water.
9. Rinnai V65en Tankless Hot Water Heater, 6.5 Gpm, Natural Gas, Outdoor Installation
Looking for a tankless hot water heater that's efficient and compact? Look no further than Rinnai's non-condensing tankless model, which heats water only when you need it to help conserve energy. With a sleek design that's only the size of a small suitcase, this water heater can fit in almost any space and provides up to 6.5 gallons per minute, which means you can run up to five fixtures at once without running out of hot water.
Rinnai's tankless water heater also comes with enhanced scale detection that helps prevent long-term damage to the unit. And with a 15-year residential guarantee for the heat exchanger, a 5-year guarantee for labor, and a 1-year guarantee for parts, you can trust that this water heater will provide reliable performance for years to come.
For added convenience, the Controlr module allows for WiFi control (not included). However, it's important to note that professional installation is recommended. Rinnai provides a Find a Rinnai PRO page on their website to help you locate a qualified technician in your area.
To find the right tankless water heater for your home, Rinnai offers a variety of resources including product guides, manuals, energy guides, warranty information, videos, and tables. They even have a Ground Water Temperature Map to help you determine if this particular model is optimal for your region.
Invest in Rinnai's non-condensing tankless water heater for a smart, durable, and efficient solution to your hot water needs.
10. Rinnai V65in Tankless Hot Water Heater, 6.5 Gpm, Natural Gas, Indoor Installation
Introducing the RE160iN, the latest non-condensing technology from Rinnai that offers a cleaner layout for faster installation and servicing. This tankless hot water heater is designed to only heat water when necessary, which helps conserve energy and reduce your utility bills.
The non-condensing design of this compact gas water heater allows it to fit in a small space, as it's only the size of a small suitcase. However, don't let its size fool you, as it can provide up to 6.5 gallons per minute (enough for 5 fixtures at once) to ensure that you never run out of hot water.
This water heater features enhanced scale detection that helps prevent serious long-term damage to the unit. Plus, it comes with a 15-year heat exchanger guarantee, a 5-year labor guarantee, and a 1-year parts guarantee for residential use. If you're interested in controlling the unit with WiFi, be sure to check out the Controlr module (available separately).
While the installation of this tankless water heater is manageable, Rinnai highly recommends seeking the services of a qualified technician. You can easily locate a professional in your area by visiting the Find a Rinnai PRO page on their website.
To ensure that you make an informed decision when purchasing a tankless water heater, Rinnai provides product guides, manuals, energy guides, warranty information, videos, and tables on their website. You can even check their Ground Water Temperature Map to see if this heater is optimal for your region.
Best Condensing Tankless Water Heater FAQs
How does a condensing tankless water heater differ from a traditional tank water heater?
A condensing tankless water heater is a type of water heater that heats water on demand without the need for a storage tank. Unlike traditional tank water heaters, which store hot water in a tank and maintain it at a constant temperature, a condensing tankless water heater heats water only when it is needed, providing a continuous supply of hot water.
The main difference between a condensing tankless water heater and a traditional tank water heater is the way they heat water. A condensing tankless water heater uses a heat exchanger to transfer heat from the burner to the water, while a traditional tank water heater uses a heating element or a gas burner to heat the water directly.
Another key difference is efficiency. Condensing tankless water heaters are more efficient than traditional tank water heaters because they do not have to maintain a constant temperature in a storage tank, which can lead to standby heat loss. Instead, they heat water on demand, which reduces energy waste and lowers operating costs.
Overall, condensing tankless water heaters are a more efficient and cost-effective option for providing hot water in homes and businesses, making them a popular choice for those looking to upgrade their water heating system.
How much space is required for installing a condensing tankless water heater compared to a standard tank water heater?
When it comes to installing a condensing tankless water heater, the amount of space required is significantly less than that of a standard tank water heater. This is because a condensing tankless water heater is much smaller in size and does not require a large storage tank. In fact, condensing tankless water heaters are often wall-mounted, which frees up valuable floor space in your home.
In terms of measurements, a standard tank water heater can be up to 60 inches tall and 24 inches wide, whereas a condensing tankless water heater is typically only around 28 inches tall and 18 inches wide. This means that a condensing tankless water heater can be installed in a much smaller area than a tank water heater, making it ideal for homes with limited space.
It's worth noting that while the physical size of a condensing tankless water heater is smaller than a standard tank water heater, it may require additional ventilation and gas lines to be installed. It is recommended to consult with a licensed HVAC professional to determine the best placement and installation requirements for your specific home and needs.
What are the benefits of using a condensing tankless water heater compared to a standard tank water heater?
Condensing tankless water heaters offer several benefits over standard tank water heaters. One of the biggest advantages is energy efficiency. Condensing tankless water heaters are designed to capture heat from exhaust gases that would otherwise be wasted and use it to preheat incoming water. This process makes them up to 30% more energy-efficient than standard tank water heaters. This means that they can save homeowners a significant amount of money on their monthly energy bills.
Another benefit of using a condensing tankless water heater is that they take up less space than a standard tank water heater. Because they don't have a large tank, they can be mounted on a wall, freeing up valuable floor space. Additionally, they provide an endless supply of hot water, as they heat water on-demand as it is needed.
Finally, condensing tankless water heaters have a longer lifespan than standard tank water heaters. They are less prone to rust and corrosion, which can significantly reduce their lifespan. On average, a condensing tankless water heater can last up to 20 years, while a standard tank water heater typically lasts between 10-15 years. Overall, condensing tankless water heaters offer a more energy-efficient, space-saving, and longer-lasting solution for homeowners in need of a water heater.
What are the installation requirements for a condensing tankless water heater and how do they differ from a traditional tank water heater?
When it comes to installing a condensing tankless water heater, there are a few key requirements that differ from traditional tank water heaters. First and foremost, a condensing tankless water heater requires a gas line capable of delivering the necessary fuel supply to the unit. It's important to note that this gas line must meet specific sizing requirements to ensure proper operation and safety.
Additionally, a condensing tankless water heater requires proper venting to remove exhaust gases from the unit. This typically involves installing a stainless steel vent pipe that runs to the exterior of the home. It's important to follow manufacturer instructions and local codes when selecting and installing the venting system.
Unlike traditional tank water heaters, a condensing tankless water heater also requires electrical power to operate. This includes a dedicated circuit and outlet that meets local electrical codes.
Overall, installing a condensing tankless water heater requires careful attention to detail and adherence to manufacturer instructions and local codes. While the installation process may differ from a traditional tank water heater, the benefits of increased efficiency and energy savings make it a worthwhile investment for many homeowners.
What are the potential drawbacks of using a condensing tankless water heater and how can they be addressed?
Condensing tankless water heaters are an energy-efficient option for providing hot water in homes and buildings. However, there are potential drawbacks to using this technology.
One of the main concerns is the initial cost of installation. Condensing tankless water heaters tend to be more expensive than traditional tank-style water heaters. Additionally, they require specialized venting and gas lines, which can add to the cost of installation.
Another potential drawback is the possibility of reduced water flow rates. Condensing tankless water heaters need to heat water quickly, which can lead to a reduction in flow rates. This can be addressed by choosing a properly sized unit and ensuring that the plumbing is appropriately configured.
Another issue that can arise with condensing tankless water heaters is the possibility of freezing in colder climates. This can be addressed by installing the unit in a location that is protected from freezing temperatures or by using insulation or a heater to prevent freezing.
Finally, condensing tankless water heaters require regular maintenance to ensure optimal performance and efficiency. This includes flushing the unit to remove mineral buildup and checking for leaks or other issues.
Overall, while condensing tankless water heaters offer many benefits, it is important to weigh the potential drawbacks and take steps to address them.
What factors should be considered when choosing the best condensing tankless water heater for your home or business?
There are several important factors to consider when choosing the best condensing tankless water heater for your home or business.
Firstly, it is important to consider the size of the unit. You should choose a unit that is appropriately sized for your water usage needs. The size of the unit will depend on the number of people in your household or the amount of hot water you need for your business.
Secondly, you should consider the energy efficiency of the unit. A high-efficiency unit can help you save money on your energy bills in the long run.
Thirdly, you should consider the brand and the reputation of the manufacturer. Research the brand to ensure that they have a track record of producing high-quality and reliable products.
Fourthly, consider the cost of the unit and its installation. Choose a unit that fits within your budget and can be easily installed by a professional.
Lastly, consider the warranty and after-sales support provided by the manufacturer. Choose a unit that comes with a solid warranty and good customer support in case you need any assistance or repairs in the future.
What is the average cost of a high-quality condensing tankless water heater?
The cost of a high-quality condensing tankless water heater can vary depending on several factors such as brand, size, and features. On average, a high-quality condensing tankless water heater can range from $1,500 to $2,500. However, some high-end models can cost upwards of $3,500. It's important to note that although the initial cost may be higher than a traditional tank water heater, a condensing tankless water heater can save you money in the long run due to its energy efficiency and longer lifespan. Additionally, some manufacturers offer rebates or incentives to encourage consumers to switch to a more efficient water heating system. It's always best to do your research, compare prices and features, and consult with a professional to determine the best option for your specific needs and budget.
What is the lifespan of a condensing tankless water heater and how does it compare to a traditional tank water heater?
A condensing tankless water heater typically has a longer lifespan compared to a traditional tank water heater. On average, a condensing tankless water heater can last up to 20 years, whereas a traditional tank water heater tends to last around 10-15 years.
The reason for the longer lifespan of a condensing tankless water heater is due to its design. Unlike traditional tank water heaters, which store a large volume of hot water, condensing tankless water heaters only heat water on demand. This means there is less wear and tear on the unit and fewer chances for leaks or other issues to occur.
Additionally, condensing tankless water heaters have a more efficient heating process, which can help reduce energy consumption and save money on utility bills. They also take up less space than traditional tank water heaters, making them a popular choice for smaller homes or apartments.
Overall, if you are looking for a water heater with a longer lifespan and greater energy efficiency, a condensing tankless water heater may be the best option for you.
What is the most efficient condensing tankless water heater currently available in the market?
There are several efficient condensing tankless water heaters available in the market currently, but the most efficient one is the Rinnai RUR98iN Ultra Series Condensing Indoor Natural Gas Tankless Water Heater. It has a thermal efficiency of up to 96%, which means that it can convert 96% of its fuel energy into hot water, making it highly energy-efficient. It also has a flow rate of up to 9.8 gallons per minute, which means that it can provide hot water on demand to multiple fixtures simultaneously without any lag time.
The Rinnai RUR98iN features a condensing technology that utilizes the heat from the exhaust gases to preheat the incoming cold water, thereby reducing the workload on the burners and increasing its energy efficiency. It also has smart Wi-Fi connectivity, allowing users to control the unit remotely using their smartphones or tablets. With its compact size and easy-to-install design, the Rinnai RUR98iN is an excellent choice for homeowners looking for an efficient and reliable tankless water heater.
What kind of maintenance is required for a condensing tankless water heater and how often should it be performed?
Condensing tankless water heaters are a great choice for homeowners who want to have an energy-efficient and space-saving way of heating water. However, like any other appliance, these systems require regular maintenance to ensure proper functioning and longevity.
The most important maintenance task is to flush the system regularly to remove mineral deposits that can build up inside the unit and cause damage. The frequency of this task will depend on the hardness of the water in your area, but it is generally recommended to flush the system every six months to a year.
Another maintenance task that should be performed regularly is to check the unit's air intake and exhaust vents for any blockages or debris. These vents need to be clear to ensure proper ventilation and prevent carbon monoxide buildup, which can be dangerous.
It's also important to check the unit's filters and replace them as needed. A clogged filter can reduce the efficiency of the system and cause it to work harder than necessary.
Overall, regular maintenance of a condensing tankless water heater is crucial to ensure its longevity and efficiency. It's recommended to have a professional technician perform an annual maintenance check to ensure everything is in working order.
