Installing a water heater without a tank, commonly known as a tankless water heater or an on-demand water heater, has grown in popularity due to its energy efficiency and space-saving benefits. However, many people wonder if it is possible to install a tankless water heater horizontally instead of the traditional vertical installation. In this article, we will explore the feasibility of installing a tankless water heater horizontally and discuss the important considerations involved.
Understanding Tankless Water Heaters:
Before discussing horizontal installation, it is essential to have a clear understanding of how tankless water heaters work. Unlike traditional water heaters with a tank that store and preheat water, tankless water heaters heat water on demand. They directly heat the cold water as it passes through the unit, providing a continuous supply of hot water without the need for a storage tank.
Vertical vs. Horizontal Installation:
Traditionally, tankless water heaters are installed vertically. This vertical orientation allows for proper venting and the prevention of condensation build-up, as any condensate produced can easily drain downwards. Moreover, vertical installation ensures optimal heat transfer and efficient operation of the unit.
However, there are situations where space limitations or specific installation requirements may necessitate a horizontal installation, such as when there is insufficient vertical clearance or when the water heater needs to be installed on an exterior wall.
Important Considerations for Horizontally Installing a Tankless Water Heater:
While it is possible to install a tankless water heater horizontally, there are certain considerations that need to be taken into account to ensure proper operation and performance:
- Venting: The venting system is crucial for safe operation of a tankless water heater. When installing horizontally, it is important to use approved venting materials and follow the manufacturer’s guidelines to ensure that the flue gases can be properly expelled without any obstruction that could lead to dangerous backflow of combustion byproducts.
- Condensation Drainage: To ensure proper drainage of condensate, which is a natural byproduct of the combustion process in tankless water heaters, horizontal installations often require additional measures such as the use of a condensate neutralizer or a condensate pump to remove the condensate from the unit effectively.
- Heat Dissipation: Horizontal installations may face challenges in dissipating the heat generated by the tankless water heater. It is crucial to ensure that the unit has adequate clearance and is not installed in an enclosed space, as proper air circulation and heat dissipation are essential to prevent overheating and to maintain optimal performance.
- Space and Accessibility: Horizontal installations may require additional space and accessibility considerations, such as ensuring that the unit can be easily accessed for maintenance or repair purposes. Adequate space should be provided around the unit to allow for proper airflow and access to key components.
Consulting a Professional:
Given the technical complexities and specific requirements involved in horizontally installing a tankless water heater, it is recommended to consult a professional plumber or HVAC technician. They have the necessary expertise and knowledge to assess your specific installation needs, ensure code compliance, and guide you through the process to achieve a safe and efficient installation.
While installing a tankless water heater horizontally is feasible, it requires careful consideration of venting, condensation drainage, heat dissipation, and space requirements. Seek professional guidance to ensure a safe and effective horizontal installation. Remember that proper installation and maintenance are crucial for the long-term performance and reliability of your tankless water heater.