Rheem RTG-70DVLN-3: Superior Tankless Heater – Worth It
The Rheem RTG-70DVLN-3 is a high-efficiency non-condensing indoor tankless natural gas water heater designed to provide an endless supply of hot water for homes. This model boasts a robust 7.0 GPM (gallons per minute) flow rate and 160,000 BTUs, making it a powerful solution for households with moderate to high hot water demands. Its compact design and advanced features aim to deliver both comfort and significant energy savings.
Quick Summary: Rheem RTG-70DVLN-3
Rating: 4.4 out of 5 stars (165 reviews)
Price: ~$779.88 USD
Key Pros:
- Endless Hot Water: Provides continuous hot water on demand, eliminating shortages.
- High Efficiency: Non-condensing design offers good energy savings compared to traditional tanks.
- Compact Size: Frees up valuable floor space, ideal for smaller utility areas.
- Reliable Performance: Delivers a consistent 7.0 GPM, suitable for multiple simultaneous uses.
Key Cons:
- Higher Upfront Cost: Initial purchase and installation can be more expensive than tanked heaters.
- Installation Complexity: Requires professional installation due to specific venting and gas line requirements.
Table of Contents
Rheem RTG-70DVLN-3 Overview
The Rheem RTG-70DVLN-3 represents a significant leap in home water heating technology, moving away from traditional tank-based systems. This indoor, natural gas-powered unit is designed for homeowners seeking efficiency, convenience, and a continuous supply of hot water. As a non-condensing model, it offers a balance between performance and cost-effectiveness for many applications.
Unlike conventional water heaters that store and constantly heat a large tank of water, the RTG-70DVLN-3 heats water on demand. When a hot water faucet is opened, cold water flows into the unit, where a powerful gas burner rapidly heats it to the desired temperature. This process ensures that you only use energy when hot water is actually needed, leading to substantial energy savings over time.
With a maximum flow rate of 7.0 GPM, this model is well-suited for medium to larger homes. It can comfortably handle the simultaneous operation of two showers and a dishwasher, or a similar combination of hot water fixtures, without experiencing a drop in temperature or pressure. This capability makes it a practical choice for families who frequently use hot water in different parts of their home.
The unit’s 160,000 BTU input rating indicates its robust heating capacity, allowing it to quickly bring cold incoming water to temperature. Its non-condensing design means it exhausts hot gases directly, which simplifies venting requirements compared to condensing models. While condensing units achieve higher efficiency, non-condensing tankless heaters like the RTG-70DVLN-3 are often more affordable upfront and still offer considerable energy benefits.
Installation is typically indoors, requiring proper venting to the outside. Its compact size allows for flexible placement, often in utility closets, basements, or garages, where a traditional tank water heater would occupy much more space. This space-saving aspect is a major benefit for homeowners looking to maximize their living or storage areas.
Rheem, a well-established name in water heating, backs this product with its reputation for reliability and customer support. The RTG-70DVLN-3 is built with durable components designed for longevity, providing years of trouble-free hot water service. Understanding its specifications and operational principles is key to appreciating its value as a modern home appliance.
For those interested in the environmental impact, tankless water heaters like this one contribute to a smaller carbon footprint by reducing energy waste. They prevent the standby heat loss common in tank-style units, which continuously lose heat even when no hot water is being used. This makes the Rheem RTG-70DVLN-3 an environmentally conscious choice.
Considering its design for natural gas, it’s important to ensure your home has access to a natural gas line with sufficient capacity. Conversion kits for propane are sometimes available for similar models, but this specific unit is optimized for natural gas. Always consult with a certified installer to confirm compatibility with your home’s existing infrastructure.
The digital display and precise temperature controls further enhance the user experience, allowing homeowners to set their desired hot water temperature with accuracy. This level of control not only improves comfort but also contributes to safety, especially in homes with young children or elderly residents, by preventing accidental scalding.
Overall, the Rheem RTG-70DVLN-3 offers a compelling package of efficiency, performance, and convenience for homeowners ready to upgrade their hot water system. Its ability to deliver continuous hot water without the bulk of a tank is a game-changer for modern living, providing comfort and savings in one compact unit.
Rheem RTG-70DVLN-3 Key Features & Specs
The Rheem RTG-70DVLN-3 is packed with features designed to maximize efficiency, performance, and user convenience. Understanding these specifications is crucial for anyone considering this tankless water heater for their home. Each element contributes to its overall effectiveness and suitability for various household needs.
7.0 GPM Flow Rate
One of the most critical specifications is its 7.0 GPM (gallons per minute) flow rate. This indicates the maximum volume of hot water the unit can deliver per minute, assuming a standard temperature rise. For most homes, 7.0 GPM is sufficient to run two showers simultaneously along with another hot water appliance, such as a dishwasher or washing machine, without a noticeable drop in temperature.
The actual achievable GPM can vary based on the incoming water temperature. In colder climates, where incoming water temperatures are lower, the effective GPM might be slightly reduced as the unit works harder to achieve the desired output temperature. However, for typical residential applications, its 7.0 GPM capacity is robust and reliable.
160,000 BTU Input
The unit’s 160,000 BTU (British Thermal Unit) natural gas input is the amount of energy it consumes to heat water. This high BTU rating allows for rapid heating of water on demand. It ensures that even with a significant temperature differential between incoming cold water and desired output, the heater can maintain its flow rate and set temperature.
This powerful burner is key to the unit’s ability to provide continuous hot water. It cycles on and off as needed, modulating its flame to precisely meet the demand without overheating or underheating the water. This modulation also contributes to its energy efficiency by only using the necessary amount of gas.
High-Efficiency Non-Condensing Design
The RTG-70DVLN-3 is a non-condensing tankless water heater, meaning it exhausts hot gases directly without extracting additional heat from them. While condensing models achieve higher energy factors (typically 0.90+), non-condensing units like this still offer substantial efficiency improvements over tank-style heaters, often with an energy factor around 0.82. This translates to significant monthly savings on utility bills.
The non-condensing design also simplifies venting requirements. It typically uses standard Category III stainless steel vent piping, which can be less expensive and easier to install than the PVC venting required for condensing units. This can reduce overall installation costs, making it a more accessible high-efficiency option for many homeowners.
Indoor Installation
This model is specifically designed for indoor installation. This means it must be placed in a protected environment, such as a utility closet, basement, or garage, where it is not exposed to the elements. Proper ventilation is critical for indoor units to safely exhaust combustion gases.
Being an indoor unit, it often benefits from more stable ambient temperatures, which can slightly improve its operational efficiency. The compact dimensions (typically around 26 x 14 x 10 inches) allow for flexible placement, freeing up valuable floor space that a bulky tank water heater would otherwise occupy.
Advanced Temperature Control
The Rheem RTG-70DVLN-3 features precise electronic temperature control, allowing users to set their desired hot water temperature with a high degree of accuracy. This prevents scalding and ensures comfort. The unit typically includes a remote digital thermostat for easy adjustment from a convenient location within the home.
This level of control also helps in optimizing energy usage. Users can set the temperature precisely to their needs, avoiding heating water hotter than necessary. The system also includes safety features like an overheat cutoff to prevent dangerous temperatures.
Direct Vent System
As an indoor unit, the RTG-70DVLN-3 utilizes a direct vent system, meaning it draws combustion air from outside and exhausts combustion byproducts directly outside. This closed-combustion system is safer as it prevents exhaust gases from entering the living space and also avoids using conditioned indoor air for combustion.
The direct vent design is crucial for indoor air quality and safety. It requires specific venting components and professional installation to ensure proper sealing and operation. Rheem provides clear guidelines for appropriate venting materials and configurations to meet safety standards.
Self-Diagnostic System
Modern tankless water heaters, including the Rheem RTG-70DVLN-3, come equipped with self-diagnostic systems. These systems monitor the unit’s operation and can display error codes on the digital interface if a problem arises. This feature significantly aids in troubleshooting and maintenance, helping technicians quickly identify and resolve issues.
The diagnostic codes can pinpoint specific component failures or operational anomalies, reducing repair time and costs. This smart feature adds a layer of reliability and ease of maintenance, ensuring your hot water system remains operational with minimal downtime.
Low NOx Burner
Many modern natural gas appliances, including the RTG-70DVLN-3, incorporate low NOx (Nitrogen Oxide) burners. These burners are designed to reduce emissions of nitrogen oxides, which are harmful air pollutants. This feature makes the unit more environmentally friendly and compliant with stringent air quality regulations in various regions.
The low NOx technology contributes to cleaner air and demonstrates Rheem’s commitment to sustainable appliance design. For homeowners concerned about their environmental impact, this is an important advantage of the RTG-70DVLN-3.
Freeze Protection
While designed for indoor use, the unit includes built-in freeze protection, which is a valuable safety feature. This system monitors the water temperature within the unit and, if it drops to near-freezing levels, it will automatically activate a small heater or circulate water to prevent freezing and potential damage to the heat exchanger. This is particularly important for units installed in unheated basements or garages in colder climates.
This automatic protection helps safeguard your investment and prevents costly repairs that can result from frozen pipes and components. However, it’s still best practice to install the unit in an area that doesn’t regularly experience freezing temperatures if possible.
Pros & Cons
Evaluating the strengths and weaknesses of any major home appliance is essential before making a purchase. The Rheem RTG-70DVLN-3 offers compelling advantages, but like all products, it also comes with certain considerations. A balanced view helps in determining if this tankless water heater is the right fit for your specific needs.
Pros of the Rheem RTG-70DVLN-3
1. Endless Hot Water Supply
One of the most celebrated benefits of the RTG-70DVLN-3 is its ability to provide an uninterrupted supply of hot water. Unlike traditional tank heaters that can run out, this tankless unit heats water on demand. This means you can take multiple long showers, run the dishwasher, and do laundry simultaneously without worrying about cold water.
This continuous hot water flow is particularly valuable for larger families or homes with high peak-hour demand. It eliminates the scheduling conflicts often associated with tank-style heaters, offering true convenience and comfort to all household members.
2. Significant Energy Efficiency and Cost Savings
As a high-efficiency non-condensing unit, the RTG-70DVLN-3 operates only when hot water is needed. This eliminates standby heat loss, a major inefficiency of tank-style heaters that constantly keep a large volume of water hot. By heating water on demand, it significantly reduces natural gas consumption.
Over the lifespan of the unit, these energy savings can translate into considerable reductions in your monthly utility bills. The initial investment, while higher, is often recouped through these long-term operational cost benefits, making it an economically sound choice in the long run.
3. Compact, Space-Saving Design
The compact size of the Rheem RTG-70DVLN-3 is a major advantage, especially for homes with limited utility space. It mounts directly to a wall, freeing up valuable floor space that a bulky 40 or 50-gallon tank water heater would typically occupy. This allows for greater flexibility in utility room design or simply provides more storage area.
Its sleek, modern design also means it can be installed in more visible locations if necessary, without being an eyesore. This space efficiency is a practical benefit for urban dwellings, apartments, or anyone looking to optimize their home’s footprint.
4. Longer Lifespan
Tankless water heaters generally have a longer lifespan compared to traditional tank units. While a tank heater might last 10-15 years, a well-maintained tankless unit like the RTG-70DVLN-3 can last 20 years or more. This extended durability is due to its robust construction and the fact that water is not stored, reducing corrosion and sediment buildup.
The modular design of tankless heaters also means that individual components can often be replaced, extending the life of the entire unit. This longevity contributes to a better return on investment over time, reducing the frequency of costly appliance replacements.
5. Precise Temperature Control
With its advanced digital controls, the RTG-70DVLN-3 allows for precise temperature adjustments. Users can set the hot water temperature to within a degree or two, ensuring optimal comfort and safety. This precision helps prevent scalding, which is particularly important in homes with children or elderly individuals.
The ability to fine-tune the temperature also contributes to energy savings, as you can avoid heating water hotter than necessary for your specific needs. This level of control is a significant upgrade from the limited temperature settings often found on traditional tank heaters.
Cons of the Rheem RTG-70DVLN-3
1. Higher Initial Cost
One of the primary drawbacks of the Rheem RTG-70DVLN-3, and tankless water heaters in general, is the higher upfront purchase price compared to conventional tank models. While the long-term energy savings often offset this cost, the initial investment can be a barrier for some homeowners.
It’s important to consider this as a long-term investment rather than just an immediate expense. The efficiency gains and extended lifespan contribute to its overall value, but the initial sticker shock is undeniable.
2. Complex and Potentially Costly Installation
Installation of the RTG-70DVLN-3 is more complex than a simple tank replacement and typically requires a professional. This can add significantly to the overall cost. Requirements may include upgrading gas lines to a larger diameter, installing a dedicated electrical circuit, and setting up a specialized venting system (Category III stainless steel).
If your home’s existing infrastructure isn’t already set up for a tankless unit, these modifications can quickly escalate installation expenses. It’s crucial to get multiple quotes from licensed plumbers experienced with tankless installations to understand the full scope and cost.
