Whether talking about a whole-house central vacuum or a portable vacuum cleaner, the expected cost of major repair work should always be balanced against its replacement cost. However, excluding high-cost motor replacements or major electrical trouble, repairs on a central vacuum system are typically far less than the cost of purchasing and installing a new one.

Experienced professionals don’t usually need to take down drywall to install the central vacuum. They are experienced in working in the tight spaces between walls and in crawl spaces to minimize any damage. The only drywall changes should be the holes cut for the new outlets. However, home design, existing plumbing, and other factors may require some modification. An estimate from a professional contractor should include information if any changes need to be made.

The disadvantages associated with central vacuums start with cost. They are expensive to install, especially in existing homes, as retrofitting requires opening walls. The system's bulky hoses can also be inconvenient to maneuver and store compared to portable vacuums. Additionally, repairs may need professional service, adding to maintenance costs. Lastly, while powerful, they may be overkill for smaller homes or apartments, making the investment less practical for some households.

For the average-size house, a central vacuum installation usually takes one day of work by a team of professionals. Large houses may take two or more days. But if you are planning on a DIY project, it’s likely to take much longer. We suggest getting a few estimates for a project this big and fully understanding all the requirements before you make a decision about installation. Certain parts of your house may not be usable during the installation, and you may want to make other plans.