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General Interest


Q: Can Built-in Vacuum Systems be installed in existing homes?
A: Yes, Allegro Central Vacuum Systems Power Unit can be installed in existing and new homes without costly alterations.

Q: Can Built-in Vacuums be installed by yourself?
A: Yes, Allegro Central Vacuum Systems offer complete Do-it-Yourself instructions, should you wish to install the system yourself.

Q: Does the power unit have to be vented outside?
A: To enjoy the full benefit of Healthy Home. It is recommended that the Power Unit to be vented when installed inside the house. However, it is not necessary if installed in a garage. You may wish to consider an inexpensive Exhaust muffler to further reduce the Power Unit noise.

Q: How many inlets are required in the average home?
A: The main factor is that you need to be able to reach every corner of your home with the 30 foot Central Vacuum Hose. A rule of thumb is 1 inlet valve per 1,000 square feet of area. You may wish to consider your basement area as well when deciding how many inlets you require.

Q: Why is it not practical to put wall valves in every room?
A: You unnecessarily increase both material and labour costs. Also, convenience is lost because you are retracing your steps to unplug and reconnect the hose more then necessary.

Q: Will Allegro hoses work with other brands?
A: Our hoses are made to Industry Standards and will fit almost all of our competitors' wall valves. The hose wall end cuff measures 1.5" (outside diameter).

Q: Is 2" O.D. tubing standard in Central Vacuum Cleaners?
A: Yes, 2" O.D. (outside diameter) is the optimum size pipe for central vacuums. Please note: To ensure trouble free operation the use of regular plumbing schedule 40 pipe is NOT recommended. The specifications for Central Vacuum PVC pipe are: 2" (outside diameter), 0.065" wall thickness.

Q: Is the piping the plumber carries the same?
A: No. Allegro manufactures piping to exact standards and tolerances for vacuum purposes only. The plumbing pipe is not suitable. It may cause clogging, poor airflow and reduced efficiency.

Q: Will our system work in a home with existing 2" PVC?
A: Yes, competition is 100% 2" tubing, and has always been, except for a few early models. Our vacuum cleaner unit is 100% compatible with competitors' 2" tubing.

Q: How much tubing do you need? How do you figure it?
A: An average of slightly over 20' for each inlet valve. This figure could change depending upon the house type and should only be used as a reference.

Q: Is there any loss of suction or air-flow with the amount of tubing installed?
A: The amount of tubing installed in the average home is approximately 40'. When a system is installed with increased footage up to 250', it will be necessary to use a larger power unit to maintain the excellent suction and airflow.

Q: What is the difference between electrified and non-electrified houses?
A: Electrified hose has 110/120-volt cord moulded into it for use with the electric powerhead. Non-electrified hose would be used with an air-driven powerhead or on straight suction carpet/floor tools.

Q: What about installing the vacuum cleaner unit in a closet?
A: Yes, with proper ventilation.

Q: Where are the vacuum power units most often installed?
A: Basements and garages are the most common areas for installing the unit. Keep in mind that installing the unit in a garage offers extra advantages: 1) Noise outside; 2) Remove dirt outside; 3) Cleans car/garage.

Q: What actually activates the unit?
A: Insertion of the hose end into the inlet valve connects two 24 volt voltage contact points and automatically starts the vacuum. Another feature offered is an on/off button which provides a backup if for some reason your 24 volt system requires maintenance.

Q: Do I need an electrician to connect my vacuum to a special circuit?
A: No, all Allegro Power Units can be plugged into normal house service outlets.

Q: What if my children touch the contacts inside the Wall Inlet Valve?
A: Low voltage system is only 24 volt. Very similar to that used with speakers or security system and it is totally safe with your children.

Q: What if I decide to move?
A: Allegro Central Vacuum Systems adds value to your home, and you should get your investment back when you move. However, Allegro system is designed to detach so that you can take it with you if you wish.

Q: Can you pick up water with this system?
A: No, you should not pick up any liquids.

Q: How much space is needed below the mounted unit to empty it. In other words, what it the min height above the floor it can be mounted?
A: For the model MU3300 compact unit you would need a minimum of 12" to access the paper bag. The access is from the top. I would estimate you would need about 40" in total. From the bottom 1 or 2" of space will be ok.

Q: Some units made for RVs are sold with a "stretch hose" that is only about 7 feet but stretches to 30feet. That's a big advantage. Do you offer something like that?
A: We also offer the stretch hose. The only advantage is the fact you could save space. If you have room to store a 30' hose we would recommend that over the stretch hose. The stretch hose also tend to be heavier.

Q: Is the RV unit a central vacuum--where you have a port in different part of the rvRVto plug into, or do you plug directly into the vacuum unit?
A: The RV Power Unit Model MU2100 is designed to operate as a stand alone unit with one Utility Inlet Valve on the unit, or you could also install the RV vacuum in your storage space and have the tubing and wall valves installed inside your RV just like a Central Vacuum Unit.
The hose ends are Central Vacuum Industry Standard and you could use one of the three hose and attachments sets we offer.