Tankless water heaters offer a compact and energy-efficient alternative to traditional storage tanks. However, proper installation requires careful planning to meet space and clearance requirements, especially in Canadian homes where building codes and climate considerations come into play.  

Keep reading to learn what kind of space you’ll need for a new tankless water heater and how that compares to traditional tank options 

Typical Tankless Water Heater Dimensions 

Tankless water heaters are significantly smaller than traditional tank models. Typical dimensions for residential units are approximately 50 cm high, 70 cm wide, and 25 cm deep. These compact sizes allow for flexible installation options, such as mounting on walls in utility rooms, basements, or even outdoors, provided they are protected from extreme weather conditions. 

How Much Smaller is a Tankless Water Heater Compared to a Tank? 

When it comes to saving space, tankless water heaters clearly have the upper hand. A typical hot water tank stands about 1.5 metres tall and occupies roughly 60 cm of floor space in diameter—that’s a good chunk of valuable real estate in your basement or utility room. On the other hand, a tankless heater is much smaller and can hang neatly on the wall, leaving your floors clear and making your space feel roomier.  

For those with limited space, this compact solution can make a noticeable difference in your storage allowance.  

Clearance and Ventilation Requirements 

While they don’t take up much space, you have to remember to maintain proper clearance around the unit. Manufacturers generally recommend at least 30 cm (1 foot) of clearance on all sides to ensure adequate airflow and accessibility for servicing.  

For gas-powered units, venting is necessary and requires extra space. Direct vent systems require both intake and exhaust vents to the outside, while power vent systems use indoor air for combustion and require only an exhaust vent. It’s important to follow the manufacturer’s guidelines and local building codes regarding vent placement and materials.  

Canadian Building Code Considerations 

In Canada, installation must comply with the National Plumbing Code and any additional provincial or municipal regulations. For example, gas-fired units must not be installed in bedrooms or bathrooms unless they are direct-vent sealed combustion types. 

Additionally, outdoor installations must be equipped with freeze protection to withstand Canadian winters. It’s advisable to consult with a licensed professional familiar with local codes to make sure everything is legal. 

Additional Factors to Consider 

  • Utility Connections: Ensure proximity to necessary utilities such as water lines, gas supply, and electrical outlets.  
  • Maintenance Access: Plan for easy access to the unit for routine maintenance and potential repairs.  
  • Noise Considerations: While generally quiet, some units may produce noise during operation; consider this when choosing an installation location.  

Ready to Switch to Tankless? D&B ClimateCare Can Help 

Considering a tankless water heater to free up space and boost your home’s energy efficiency? D&B ClimateCare’s team of expert technicians will guide you through every step—from choosing the perfect model to professional installation tailored to your home’s needs. Contact us today and discover how easy it is to upgrade your comfort! 

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