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I am in the process of buying a brand new home in the US through a builder. The home will be approximately 3,000 sq ft and I was given the option of buying a central vacuuming system for the house.

It looks really nice and convenient. The price doesn't sound crazy for the potential benefit and all the "plumbing" required (approx. $3,500). I am pretty confident this would not be something easy (or even feasible) to get installed after the home is built. Therefore, a few questions that popped in my head are:

• In terms of efficiency of vacuuming, is this a better option than normal vacuum cleaners that have to be plugged in to the wall? (i.e. which of the two removes more dust from my home?)




• Any concerns regarding the compatibility of the holes that go in the wall? Are they pretty standard, or will I be tied to a particular manufacturer if I decide to buy the central vacuuming system?




• Is it true that central vacuums will expel less dust than normal vacuums? The seller said so and it sounds intuitive to me since you can have particles coming out of the electric vacuum cleaners while you're vacuuming, while the central vacuum is just a giant hose all the way to the central container.




• Thoughts on the little dust vent that goes in the wall, used to suck the particles you swept from the floor? (doesn't require the hose)




• For those who have it, do you think it's worth it? Any limitations that make you have to use an electric vacuuming system?

I've installed several systems in new construction projects up to about 6,000 s.f., one of which was a log home. (That was interesting.)

No, you don't necessarily get better performance. It's all about convenience and not having to deal with dusty bags or canisters except maybe once a year. A really good standalone unit will at least equal a central vac powerhead.

Each brand has a specific interface. Some may be compatible, but don't count on it. You could have the builder rough it in and add the boxes and covers later, if you're the patient and careful type.

It's true that central vacs expel less dust into the home in the sense that the collection can is usually outside. They're often in the garage or under an exterior shelter. If yours stays inside, it all comes down to specific hardware.

Floor sweeps are great if you actually use a broom (or just want to kick a little debris in). If you're more of a hard-floor vacuumer anyway, they'd be somewhat pointless.

"Worth it" is subjective. You might look into doing the install yourself and save about 2/3 the cost. It's not difficult and isn't as critical as drain plumbing since a tiny leak won't destroy a portion of your home. With modern standalone vacuums as great as they are cough Shark Rocket cough, it's up in the air. So to speak.

Other thoughts:

• Noise is a bit of a wash. You don't have the fan motor running at the point of use, but the air being pushed through the pipes can whoosh a bit in other rooms, and the powerhead brush motor (or pneumatic impeller) makes some noise. You also have a powerful fan unit coming on suddenly in your garage, which can startle the pants off the dog.


• The powerhead and hose assembly is a bit cumbersome to use and store. Since the hose has to reach from the inlet port to the other side of a typical room, they're much longer than what you'd find on a traditional portable canister vacuum. Think laundry-basket sized bulk.


• The inlets can leak slightly during use or snap shut a bit when the system is activated. Again, noise in rooms other than where the thing is actually being used.


• Some folks end up buying multiple powerheads, one for each level of the home. Plan for that potential cost.

Like anything else, can be done well or poorly. Having seen some done poorly, those are a waste of money. Short sharp turns, improperly arranged tees make keeping the system free of clogs a pain, when the system is clogged it does not vacuum very well. Then people resort back to portable vacuum cleaners.

Less dust in the house: well, that depends on where the vent on the central goes - if outside, that's true. If inside, it's down to "how good are the filters?" before it blows that air back into the house. But if it vents outside, does it make gas appliances backdraft, or is there makeup air supplied?

I don't know how compatible the different maker's end-fittings are, I suspect "not very." But if the pipes are in place, you could change out the end-fittings if you needed to.

Cost-effective-ness-wise, I have to suspect that putting in the proper plumbing (long sweeping curves (all going the right direction) so things don't get stuck and make difficult clogs in the walls is a big part of doing it right) and attaching a big shop-vac (with a fancy HEPA filter cartridge, if you like) to the business end would come out a lot less expensive than any of the "whole-house" vacuums I've seen, and might work better than some of them, too. But that's the way I think. You'd still have to pick a wall-outlet fitting.

Sweep port (to use with a broom) does not seem like a useful thing unless you persist in using a broom when you have a vacuum handy, so that's down to your habits. Then again, I've never seen one in person, but I doubt I'd be interested. Even more so if you are concerned with removing dust, since a broom just stirs up the small dust and that won't make it into the "sweep port".

Whether it's any of the commercial units I've seen or a shop vac on the low-budget plan, the actual vacuum unit itself will be quite loud, wherever it is. On the upside, vacuuming where it isn't will be quieter than using a portable vacuum cleaner, as the noise is concentrated at the central unit location.