No, we have ways of keeping disturbance of dust to a minimum. Our guys are careful of your floors and walls while they work and you will not need to have your house cleaned when we are finished.
It is not noisy inside the house, although the power vac truck is running outside the home during the cleaning.
No, there is no need to leave the home during the process. The process and the technician are very neat and tidy, and no chemicals are used that would force anyone to leave the house. The technician will turn off the furnace or central air conditioner prior to cleaning the ducts, so could cool the home temperature down some in the winter, and make it warmer in the summer. If there is anyone within the home that may be sensitive to the temperature change, consider finding an alternative location for that particular person throughout the cleaning.
An average size house takes somewhere between 1.5 to 3 hours. Larger house take longer, but we will stay until the job is finished with no additional charges.
Just make sure that none of your vents are covered by extremely heavy furniture, like a bookcase or a waterbed. Most everything else we can easily maneuver around.
This is really personal preference. If nobody in your home suffers from severe allergies or asthma, and no remodeling has been done recently, every three years or so is great.
If it is a gas or oil furnace, it should be cleaned every 2-3 years.
A quick call to Meyer Duct Cleaning at 503-622-1200 and you can get a free, over the phone estimate for all your duct and furnace cleaning needs.