5 Best Propane Tankless Water Heaters for Cold Climates [In 2025]

In the world of home appliances, few technologies have revolutionized the way we think about hot water as much as tankless water heaters. These innovative devices have become increasingly popular, especially in colder climates, where they can provide a reliable and efficient solution for meeting your hot water needs. In this comprehensive review, we’ll explore some of the top propane tankless water heater options designed for cold weather conditions, helping you make an informed decision for your home.

5 Best Propane Tankless Water Heaters for Cold Climates Review

Rheem RTG-84DVLP-3 High Efficiency Non-Condensing Indoor Tankless Liquid Propane Water Heater

Overview

The Rheem RTG-84DVLP-3 is a high-efficiency, non-condensing indoor tankless liquid propane water heater that delivers continuous hot water with minimal wait. Featuring exclusive Hot Start Programming and Rheem’s Overheat Film Wrap, this water heater provides peace of mind and efficient, continuous hot water for your entire home.

Specs

• Fuel Type: Liquid Propane
• Flow Rate: 8.4 GPM
• BTU Input: 199,000
• Dimensions: 14 x 9.75 x 23.5 inches
• Weight: 47 pounds

Pros

• Continuous hot water supply for the entire home
• High-efficiency design saves energy and costs
• Compact size and wall-mount installation for space-saving
• Exclusive features like Hot Start Programming and Overheat Film Wrap

Cons

• May not be suitable for homes with high hot water demands
• Installation may require professional assistance

Customer Reviews

Customers generally praise the Rheem RTG-84DVLP-3 for its efficient performance, reliability, and space-saving design. Some users report experiencing no issues with cold water bursts or inconsistent temperatures, while a few have noted minor installation challenges.

Propane Tankless Water Heater, 4.74GPM 18L Indoor

Overview

This propane tankless water heater features steady temperature control, multiple safety protections, and a compact, space-saving design. With a high-performance output of 68,000 BTU per hour, it provides on-demand hot water for 2-3 points of use simultaneously, making it a great choice for small to medium-sized homes.

Specs

• Fuel Type: Propane
• Flow Rate: 4.74 GPM
• BTU Input: 68,000
• Dimensions: 17.7 x 9.8 x 27.6 inches
• Weight: 29.8 pounds

Pros

• Steady temperature control and multiple safety features
• Efficient and energy-saving with advanced combustion technology
• Compact and space-saving design
• Easy installation with standard fittings and included accessories

Cons

• May not be suitable for households with high hot water demands
• Some users reported inconsistent water temperature

Customer Reviews

Customers generally find this propane tankless water heater easy to install and report that it works well. However, some users have mixed feedback on the consistency of the water temperature, with some experiencing the water getting too hot or too cold at times.

Propane Gas Tankless Water Heater, Indoor Max 3.6 GPM, 80,000 BTU Instant Hot Water Heater

Overview

This 80,000 BTU propane tankless water heater provides a hot water flow rate of 3.6 gallons per minute, making it suitable for 2-3 water supply points in a household. It eliminates the need for a 30-minute preheating wait time, delivering instant hot water on demand.

Specs

• Fuel Type: Propane
• Flow Rate: 3.6 GPM
• BTU Input: 80,000
• Dimensions: 23.6 x 15.7 x 7.1 inches
• Weight: 26.5 pounds

Pros

• Provides instant, continuous hot water without preheating
• Offers four temperature modes for different usage scenarios
• Includes the exhaust pipe, reducing additional costs
• Reduces energy consumption with an oxygen-free copper water tank

Cons

• May not be suitable for larger households with high hot water demands
• Installation should be carried out by licensed professionals

Customer Reviews

Due to the limited customer reviews available for this specific model, it’s difficult to provide a comprehensive analysis of the user feedback. However, the product’s features and specifications suggest it could be a viable option for small to medium-sized households in cold climates.

FOGATTI Propane Tankless Water Heater Outdoor – Up to 5.1 GPM 120,000 BTU Instant Hot

Overview

The FOGATTI propane tankless water heater is designed for outdoor installation, delivering up to 5.1 GPM of instant hot water. With its 120,000 BTU heating capacity, it can support 2-4 outlets simultaneously, making it a suitable choice for medium-sized households.

Specs

• Fuel Type: Propane
• Flow Rate: 5.1 GPM
• BTU Input: 120,000
• Dimensions: 23.94 x 15.5 x 7.3 inches
• Weight: 44.1 pounds

Pros

• Efficient tankless heating with a high flow rate and BTU output
• Precise temperature control with advanced water servo technology
• Compact and easy outdoor installation with a remote control panel
• Durable construction with a high-efficiency copper heat exchanger
• Comprehensive safety features and warranty coverage

Cons

• May not be suitable for high-altitude areas above 2,000 feet
• Some customers reported issues with the display board connection

Customer Reviews

Customers generally praise the FOGATTI propane tankless water heater for its quality, value, and easy outdoor installation. However, there are mixed reviews regarding the consistency of the water temperature and the overall functionality, with a few users reporting issues with the unit’s lifespan and ignition.

Propane Tankless Water Heater Outdoor, 5.2 GPM 130000 BTU On Demand Hot Water Heater

Overview

This outdoor propane tankless water heater delivers up to 5.2 GPM of instant hot water, capable of supplying 3-4 water outlets simultaneously. With its advanced features and weatherproof construction, it’s designed to provide reliable and consistent hot water in cold climates.

Specs

• Fuel Type: Propane
• Flow Rate: 5.2 GPM
• BTU Input: 130,000
• Dimensions: 23.6 x 15.7 x 7.1 inches
• Weight: 44 pounds

Pros

• Provides instant hot water on demand, eliminating waiting times
• Capable of supplying hot water to multiple outlets simultaneously
• Weatherproof and durable construction for outdoor installation
• Precise temperature control with an advanced thermostat system
• Equipped with comprehensive safety features for reliable operation

Cons

• Requires a power outlet for installation, which may not be available in all outdoor locations

Customer Reviews

Due to the limited customer reviews available for this specific model, it’s difficult to provide a comprehensive analysis of the user feedback. However, the product’s features and specifications suggest it could be a reliable and efficient option for outdoor propane tankless water heating in cold climates.

Buying Guide: Choosing the Best Propane Tankless Water Heater for Cold Climates

1. Climate Considerations

• Ensure the water heater is rated for use in cold climates, with features like freeze protection and wind resistance.
• Consider the minimum and maximum outdoor temperatures in your area to ensure the water heater can handle the conditions.
• For high-altitude locations, look for models specifically designed for use at elevations above 2,000 feet.

2. Capacity and Flow Rate

• Determine the hot water demand in your household, factoring in the number of bathrooms, appliances, and simultaneous usage.
• Choose a water heater with a flow rate and BTU output that can meet your peak hot water needs, even in cold weather.
• Consider models with a higher flow rate (4+ GPM) for larger homes or high-demand households.

3. Energy Efficiency

• Look for tankless water heaters with high-efficiency features, such as advanced combustion technology and insulation, to minimize energy consumption and costs.
• Compare the energy factor (EF) or uniform energy factor (UEF) ratings to assess the energy efficiency of different models.
• Consider the long-term operating costs, as propane tankless water heaters can provide significant energy savings compared to traditional tank-style models.

4. Installation and Maintenance

• Determine the available space and accessibility for the water heater, considering indoor or outdoor installation options.
• Ensure the water heater has the necessary fittings and accessories for a straightforward installation, or factor in the cost of additional components.
• Review the manufacturer’s recommended maintenance requirements and consider the ease of accessing the unit for servicing.

5. Safety and Warranty

• Look for water heaters with comprehensive safety features, such as flame failure protection, overheating prevention, and anti-freeze mechanisms.
• Consider the length and coverage of the manufacturer’s warranty, as this can provide peace of mind and protection against potential issues.
• Ensure the water heater is certified for use in your region and meets all applicable safety standards.

FAQs

1. What are the advantages of a propane tankless water heater over a traditional tank-style model?

Propane tankless water heaters offer several advantages, including on-demand hot water, improved energy efficiency, space-saving design, and the ability to handle the demands of cold climates more effectively than electric or gas tank-style heaters.

2. How do I determine the right size of propane tankless water heater for my home?

The size of the propane tankless water heater you need depends on your household’s hot water demands. Consider factors like the number of bathrooms, appliances, and simultaneous usage to choose a model with the appropriate flow rate and BTU output.

3. What special considerations are needed for installing a propane tankless water heater in a cold climate?

When installing a propane tankless water heater in a cold climate, you’ll need to ensure proper ventilation, consider the ambient temperature rating, and take steps to protect the unit from freezing, such as installing it in a heated space or using an anti-freeze mechanism.

4. How can I maintain my propane tankless water heater to ensure optimal performance in cold weather?

Regular maintenance, including flushing the system, checking for any leaks or damage, and ensuring proper ventilation, can help keep your propane tankless water heater running efficiently in cold climates. It’s also important to follow the manufacturer’s recommended maintenance schedule.

5. Are there any safety considerations I should be aware of when using a propane tankless water heater?

Propane tankless water heaters come with various safety features, but it’s essential to follow the manufacturer’s installation and operation guidelines closely, ensure proper ventilation, and consider hiring a licensed professional for the installation to ensure safe and reliable operation.

Conclusion

Investing in a high-quality propane tankless water heater can be a game-changer for homeowners in cold climates, providing a reliable and efficient source of hot water while maximizing energy savings and minimizing space requirements. By carefully evaluating the features, performance, and customer reviews of the top models on the market, you can make an informed decision that best meets the needs of your household. With the right propane tankless water heater, you can enjoy the comfort and convenience of hot water, even in the harshest winter conditions.