The possibility of your quote changing on the day of installation can occur due to several reasons, including:
Unforeseen Issues: Sometimes, unforeseen issues are only discovered once the installation process begins. For example, hidden structural issues, wiring problems, or other complications may require additional work or materials to resolve. Changes in Scope: If you decide to make changes to the scope of the installation, such as upgrading to a different type of unit or adding additional components, this can impact the cost of the installation. Additional Services: There may be additional services required that were not included in the original quote, electrical work, or other modifications to accommodate the new unit. Make sure to communicate your needs and preferences clearly, and ask about any potential additional costs or factors that could affect the final price. Any variations to your quote will be discussed with you and you will sign off on a variation to quote form as acknowledgement of this.