Online retailers usually categorize units by how they handle dust:

One of the biggest perks of buying online is the . Many retailers offer bundles that include the power unit, the hose kit, and all the PVC pipe, fittings, and glue needed for a DIY install. This is almost always cheaper than buying the pieces individually at a local hardware store. 6. Shipping and Warranty

Uses centrifugal force to separate dirt. There are no filters to buy, but you have to empty a dusty canister.

Most standard hoses are 30 or 35 feet. Measure from your furthest inlet to the opposite corner of the room to ensure it reaches. 4. Verify Compatibility

The power unit lives in the garage or basement, but the is what you’ll actually handle every day. When buying online, check if the kit includes:

A middle ground where a fabric filter protects the motor, usually requiring a quick shake or rinse once a year. 3. The "Attachment Kit" is Just as Important

If you are replacing an old unit rather than installing a brand-new system, check your . Most modern systems use a standard 1.5-inch diameter opening, but older brands (like some Nutone models) used proprietary sizes. Ensure the hose cuff on the new kit matches your existing wall valves. 5. Look for "Bundle" Deals

Central vacuum units are heavy. Look for retailers offering , but be sure to check their "damaged on arrival" policy. Additionally, confirm that the manufacturer’s warranty is valid when purchased through that specific online vendor—some brands only honor warranties if bought through authorized dealers.