Appliance installation in a house typically involves placing a new appliance in a designated area, connecting it to the necessary utilities, and testing it to ensure it is working properly. The specific steps involved in appliance installation can vary depending on the type of appliance and the specific installation requirements. Here are some general steps that are often involved in appliance installation:

1. Select a location for the appliance: Choose a spot for the appliance that is easily accessible, has the necessary utilities nearby, and meets any other specific requirements for the appliance (e.g., ventilation for a gas range).

2. Unbox and inspect the appliance: Carefully remove the appliance from its packaging and inspect it for any damages or missing parts.

3. Prepare the installation area: Clear any obstacles from the installation area, and make sure the floor is level and stable.

4. Install any necessary brackets or mounting hardware: Some appliances, such as wall ovens or over-the-range microwaves, may require mounting brackets or other hardware to be installed first.

5. Connect the appliance to the necessary utilities: This may involve connecting the appliance to a gas line, water line, or electrical outlet. Be sure to follow the manufacturer's instructions and all local codes when making these connections.

6. Place the appliance in the installation area: Carefully lift and position the appliance in the designated spot, making sure it is level and stable.

7. Secure the appliance: Use screws, bolts, or other fasteners to secure the appliance in place, as needed.

8. Test the appliance: Follow the manufacturer's instructions to turn on and test the appliance to ensure it is working properly.

9. Clean up and dispose of packaging: Remove any packaging materials and dispose of them properly.

It is important to carefully follow the manufacturer's instructions and all local codes when installing appliances to ensure safe and proper operation. In some cases, it may be necessary to hire a professional to handle the installation.