Installing a wall-mounted heat pump in the right spot is essential to get the most from its performance. One of the most overlooked—but crucial—factors is the installation height. Poor positioning can reduce system efficiency, affect airflow, and decrease indoor comfort. Let’s explore the ideal height depending on room layout, and the key factors to consider during installation.
Why Is Installation Height So Important?
Optimal hot and cold air distribution
The height at which you install your wall-mounted heat pump directly affects how air flows through the room. If it’s placed too low, warm air tends to stagnate near the floor; too high, and cold air may drop too quickly. The right height ensures even mixing of air, improving both thermal comfort and energy efficiency.
General manufacturer recommendations
Manufacturers like Daikin generally recommend installing indoor units between 6.5 and 8.5 feet (about 2 to 2.6 meters) from the floor. This range allows the unit to perform optimally, ensuring smooth, unobstructed airflow.
| Room Type | Recommended Height |
| Living Room/Open Area | 7.5 to 8.5 feet |
| Bedroom | 6.5 to 7.5 feet |
| Office/Small Room | 6.5 to 7 feet |
Factors to Consider Before Installation
Ceiling height
In homes with cathedral or very high ceilings, it might be tempting to install the unit higher. However, this can reduce performance. It’s best to mount the unit at a reasonable height to maintain efficient airflow and avoid hot or cold spots.
Room orientation and sun exposure
South-facing rooms receive more heat in summer. Avoid placing the unit directly across from windows to prevent unnecessary strain. A sidewall or slightly recessed position usually offers better performance.
Clearance around the unit
Ensure adequate space around the indoor unit—above, below, and on the sides. This allows for free airflow and easier maintenance.
Optimizing Wall Installation: Best Practices
Avoid physical obstructions
Curtains, tall furniture, shelves, or columns can block airflow. For best performance, leave at least 6 inches (15 cm) on the sides and 12 inches (30 cm) above the unit.
Avoid direct heat or cold sources
Installing the unit near a stove, oven, or exterior door can distort temperature readings and reduce efficiency. Also avoid placing it where drafts or rapid temperature changes occur.
Avoid echo-prone zones
Narrow hallways or empty rooms can amplify operational noise. For quieter performance, install the unit in areas where sound is naturally absorbed.
Common Installation Mistakes to Avoid
- Installing too close to the ceiling or floor
- Ignoring natural airflow patterns in the room
- Failing to secure the unit on a level, solid wall
- Installing on a thin shared wall, risking vibration
- Poor positioning relative to beds in bedrooms, reducing comfort
What About the Outdoor Unit?
While this guide focuses on the indoor unit’s height, don’t forget the outdoor unit also needs proper placement. It should be raised at least 12 inches (30 cm) off the ground to avoid snow and water buildup. It must also be shielded from prevailing winds while ensuring proper clearance on all sides.
Why Hire a Professional?
Proper installation is more than just mounting a unit to the wall. A certified technician will evaluate airflow volume, room configuration, thermal loads, and ensure manufacturer guidelines are followed. At Daikin Québec, we offer free on-site evaluations to recommend the best configuration for your home—with no obligation.
Conclusion
The height of your wall-mounted heat pump is not a minor detail—it’s a key factor in comfort, energy efficiency, and long-term performance. By considering room layout, ceiling height, orientation, and potential obstacles, you can get the most from your system. For optimal results and compliance with standards, don’t hesitate to consult the experts at Daikin Québec.
