Can Heat Pump Water Heaters Be Installed Outside?

Yes, heat pump water heaters can be installed outside. Heat pump water heaters are designed to work in a variety of climates, including outdoor installations.

By utilizing the heat from the surrounding air, they can effectively heat water in outdoor settings. Installing a heat pump water heater outside can help save space indoors and is a suitable option for homeowners with limited indoor space.

Can Heat Pump Water Heaters Be Installed Outside?


Advantages Of Installing Heat Pump Water Heaters Outside

Thinking of installing a heat pump water heater but unsure about whether it can be placed outdoors? Look no further! In this section, we will explore the benefits of installing heat pump water heaters outside. Let’s dive right in:

Reduced Indoor Space Requirements

  • By installing your heat pump water heater outside, you can free up valuable indoor space for other uses. It eliminates the need for a dedicated utility room or basement area to house the unit.
  • No more worries about finding a suitable spot indoors to accommodate the unit’s dimensions. Installing it outside gives you the freedom to utilize your indoor space in a more efficient and practical manner.

Noise Reduction And Improved Comfort

  • One major advantage of placing your heat pump water heater outside is the significant reduction in noise within your living environment. Unlike traditional water heaters, heat pump models operate quietly, ensuring a peaceful and undisturbed home.
  • The outdoor installation shields you from any potential disturbances caused by the unit’s operation. Say goodbye to the booming sounds and hello to a serene home ambiance.

Increased Energy Efficiency

  • Installing a heat pump water heater outside enhances its energy efficiency levels. The outdoor installation allows the unit to extract heat from the surrounding air, even in colder climates, resulting in better efficiency and performance.
  • With improved energy efficiency, you can potentially reduce your monthly utility bills, leading to long-term cost savings. Who wouldn’t want a more eco-friendly and budget-friendly solution?

By installing your heat pump water heater outside, you can enjoy reduced indoor space requirements, noise reduction, improved comfort, and increased energy efficiency. Take advantage of the benefits and make the most out of your living space while enjoying a serene and energy-efficient home.

Factors To Consider Before Installing A Heat Pump Water Heater Outside

Climate And Temperature Considerations

Before installing a heat pump water heater outside, it’s important to take into account the climate and temperature of your specific location. Here are some factors to consider:

READ MORE  Are Heat Pump Water Heaters Worth It?
  • Average temperature range: Heat pump water heaters are designed to work efficiently within a specific temperature range. Most models perform well in temperatures between 40 to 90 degrees fahrenheit. However, extreme temperatures can affect their performance and efficiency.
  • Cold climates: In colder regions, especially where temperatures drop below freezing, heat pump water heaters may struggle to extract sufficient heat from the air. This can result in reduced efficiency and potentially freeze the unit, leading to damage. It is crucial to install additional measures, such as a freeze-protect thermostat or heat tape, to prevent freezing in these conditions.
  • Hot climates: On the other hand, extremely hot climates can also pose challenges for heat pump water heaters. High temperatures can cause the unit to work harder, leading to higher energy consumption and potential strain on the components. Adequate shading or installing the unit in a cooler area can help alleviate this issue.

Location And Accessibility

The location and accessibility of the area where you plan to install the heat pump water heater also play a significant role. Here are a few points to consider:

  • Space availability: Make sure you have enough space outdoors to accommodate the heat pump water heater. Consider the dimensions of the unit and any necessary clearance requirements specified by the manufacturer.
  • Plumbing connections: Ensure that the existing plumbing lines can be easily extended to the location chosen for the installation. Accessibility to water supply and drainage points is crucial for a proper installation.
  • Noise considerations: Heat pump water heaters can generate some noise during operation, similar to an air conditioning unit. If the chosen location is close to living spaces or neighboring properties, it’s worth considering the noise factor and potential disturbance it may cause. Some manufacturers offer quieter models, so it’s worth exploring these options if noise is a concern.

Adequate Ventilation And Clearance Requirements

Proper ventilation and clearance are vital for the optimal performance and safety of a heat pump water heater installed outside. Consider the following factors:

  • Clearance requirements: The manufacturer’s guidelines will specify the required clearance around the unit for proper airflow and maintenance access. Ensure that there is enough space for adequate clearance, allowing for any necessary service or repair work.
  • Ventilation: Heat pump water heaters extract heat from the air and release cooler air as a byproduct. Adequate ventilation is necessary to prevent the accumulation of this cooler air around the unit, which can affect its efficiency. Ensure that the installation location allows for sufficient natural ventilation or consider incorporating a fan to improve airflow.
  • Protection from the elements: Outdoor installations expose the unit to the elements, such as rain, snow, and direct sunlight. While heat pump water heaters are designed to withstand outdoor conditions, it’s important to provide some form of protection, such as a canopy or shelter, to minimize exposure and potential damage.
READ MORE  Are Heat Pump Water Heaters Noisy?

Remember, before installing a heat pump water heater outside, it is always advisable to consult with a professional installer who can assess your specific situation and provide expert guidance.

Installation And Setup Process For Outdoor Heat Pump Water Heaters

Selecting The Right Location

Finding the perfect spot to install your outdoor heat pump water heater is crucial for its efficiency and longevity. Here are the key points to consider when selecting the right location:

  • Climate conditions: Choose an area that experiences relatively mild weather conditions since extreme temperatures can impact the heat pump’s performance.
  • Space requirements: Ensure that you have sufficient space for both the unit and proper airflow around it. Check the manufacturer’s guidelines for the recommended clearance requirements.
  • Accessibility: Select a location that allows easy access for regular maintenance and repairs. Consider the proximity to the electrical panel for convenient electrical connections.
  • Noise considerations: Heat pump water heaters may produce some noise during operation. If noise is a concern, try to place the unit farther away from commonly used outdoor spaces or consider using noise-reduction measures.

Preparing The Outdoor Space

Before installing the outdoor heat pump water heater, proper preparation of the outdoor space is necessary to ensure optimal performance. Here’s what you need to do:

  • Level ground: Ensure that the installation site is level, stable, and capable of supporting the weight of the unit. Uneven surfaces can cause vibrations and lead to reduced efficiency.
  • Pest control: Take preventive measures against pests that may damage or interfere with the heat pump. Keep the area clear of debris and consider installing a protective barrier if necessary.
  • Protective shelter: If the location is prone to extreme weather conditions, consider providing a protective shelter or cover to shield the heat pump from direct sunlight, rain, or snow. This can prolong its lifespan and maintain its efficiency.
READ MORE  Do Heat Pump Water Heaters Dehumidify?

Ensuring Proper Electrical Connections

Proper electrical connections are crucial for the safe and efficient operation of your outdoor heat pump water heater. Follow these steps to ensure the setup process goes smoothly:

  • Consult a professional: Seek assistance from a licensed electrician to ensure compliance with local building codes and safety standards.
  • Determine power requirements: Identify the electrical requirements of the heat pump water heater and confirm whether your electrical panel can accommodate the necessary voltage and amperage.
  • Proper wiring: Ensure that the wiring is sized correctly, using appropriate materials and techniques. Follow the manufacturer’s guidelines for wiring specifications and consider adding a dedicated circuit for the heat pump.
  • Grounding: Ensure the heat pump water heater is properly grounded to prevent electrical hazards. Consult an electrician to verify the grounding connection.
  • Safety measures: Install a disconnect switch near the unit for easy access during emergencies or maintenance. This switch should be labeled and accessible to authorized individuals only.

Remember, the proper installation and setup of your outdoor heat pump water heater are essential for its efficiency, durability, and your safety. Following these guidelines will help ensure a trouble-free experience and optimize the performance of your equipment.


Installing a heat pump water heater outside can be a viable option for homeowners looking to save space indoors and maximize energy efficiency. The benefits of locating the unit outdoors include the ability to draw in ambient air for heating, leading to less strain on the unit and potentially lower energy costs.

However, there are some important considerations to keep in mind. Ensure that the unit is placed in a suitable location that is protected from harsh weather conditions and well-ventilated to prevent airflow restrictions. Additionally, proper insulation and protection from freezing temperatures must be provided to prevent damage.

Consulting with a professional hvac technician can help determine the best location and installation approach for your specific needs. With careful planning and installation, outdoor heat pump water heaters can provide efficient and cost-effective hot water solutions for your home.


I am a mechanical engineer and love doing research on different home and outdoor heating options. When I am not working, I love spending time with my family and friends. I also enjoy blogging about my findings and helping others to find the best heating options for their needs.