I have found in some cases that spaces hold memories from the past, which can feel like a 'presence' but in fact is not. Repeated actions or events can remain and felt as energy or 'thought forms' A Space clearing with focused intention will bring peace to the space.
A minority of those who die fail to enter a different dimension and become 'earthbound'. They become attached to the earth plane and so cannot move forward.
Usually they are lost and confused. They may attach to a house or even occasionally to a living person.
Some of the common symptoms are: tiredness, memory loss, mood change, relationship problems and addictive behaviour. If the spirit stays in the home, it can affect the occupants greatly. Spirits usually do their best to draw attention to their plight, for example, by interfering with electrical appliances or causing bulbs to blow.
Earthbound spirits can be released in a gentle compassionate way. This way of helping the spirits move on to where they should be is not exorcism. The spirit is not 'banished' but is guided to its rightful place in the universe.
This can have a very positive effect on the energy in the home. However, a space clearing is recommended to clear any residual energy, once the spirit has been released.