No. Our certified technicians are trained to protect all of your home equipment prior to sealing. Our formula is delivered via a temporary access point. Some items, like humidifiers or UV lights, may need to be removed and then re-installed as a precaution. Or, these items may simply be bagged or covered. If you have any extra-sensitive equipment, we do recommend that you cover it- especially if it is close to air returns or registers. You don’t need to cover any furniture. Our technician will take care of all this for you.