The Miele S 2121 Delphi is part of the vacuum cleaner
test program at Consumer Reports. In our lab tests, canister vacuum cleaner
models like the S 2121 Delphi are rated on multiple criteria, such as those listed below.
Indicates how much embedded talc and sand a vacuum lifted from a medium-pile carpet.
Shows how well a vacuum picked up sand without dispersing it on bare floors.
Indicates the strength of airflow through the hose.
About This Brand
This German appliance manufacturer is family-owned and run, and has been making vacuum cleaners since the late 1920s. In the U.S., Miele vacuums are primarily sold through small, independent vacuum retailers, though the brand's retail distribution now includes Bed, Bath & Beyond and Amazon. Miele focuses on high-end, well-featured upright and canister models, with prices typically ranging from about $300 to $1,000.
Bag Denotes whether the model has a disposable bag. A growing number of vacuums, particularly upright models, use a container that can be emptied, eliminating the bag. To capture fine-dirt particles, however, these models must use a filter (such as a HEPA filter) that can need routine cleaning or replacement. Replacement filters tend to be significantly more expensive than bags. While vacuums with bags may also use filters, the bag acts as a prefilter that helps to keep the fine-dirt filter cleaner, thus extending its performance until cleaning or replacement. Another caveat: Emptying the dustbin and cleaning a filter can be messy, and handling it may expose you to dust and other allergens.
Weight (lbs.) Weight of the vacuum cleaner, to the nearest pound.
Brush on/off An on/off switch for the rotating brush lets you stop the brush from rotating when using tools or cleaning bare floors. This helps eliminate scattered dirt on bare floors and reduces the risk of injury if the vacuum tips over during use. It also reduces the risk of damaging a carpet or the finish of a bare floor if the vacuum sits in place at the low-height setting.
Easy on/off A switch that's located on the handle or where your foot can activate it is more convenient than one on the body of the vacuum.
Manual-pile adjust Lets you adjust the height of the machine to a carpet's pile height to allow for easy movement and thorough cleaning. Adjustments are automatic on some models, but we prefer the manual control afforded by some models.
Great for hardwood or tile floors. For carpet or area rugs, it is TERRIBLE!! Can't even suck up a feather from the rug!
How long have you owned it:
More than six months
No, I would not recommend this to a friend.
Great choice for mixed flooring
Easy To Empty
This is my second Miele. The other one is in the RV now and works great. First, I must share that the Miele S2 model line is identical except for the hose (electric/non-elect.) and floor tool (s) included. In the CU report the Titan and Delphi differ only in two ways. The Titan includes the Hepa cartridge and a hard floor brush tool. The Olympus only has a combo tool with no electric hose or powerhead- ALL ELSE IS THE SAME. Anyone shopping Miele can be confused at first. AND, there should be no performance difference between the Titan and Delphi on carpets, hair or noise. Now just about any accessory will work on all models.This was not the case on earlier models and the reason for my second purchase from a non-electric attachment model- to gain a powerhead for carpets. The expensive mistake is to not buy a power head model and then later want to add it- you have to buy a power hose, power wand and power head. The Delphi works great on tile floors and oriental area rugs. The twister is the hard floor tool of choice (accessory for any s2).<br /><br />The Delphi is the least expensive power head model. It has a HEPA option and can use the hard floor tools. The only negative I have with the unit is hose length and you can buy a 26' or so hose online for Miele too. That kinda mutes any issue with electrical cord length IMO. As you can tell, one thing that gives Miele an edge is the vast number of attachments for different jobs. I have the 90 degree brush, the 30 crevice tool, the micro kit and a natural bristle hard flooring tool. Its like a Dremel when it comes to attachments.<br /><br />One final point. I am not sure really why one would buy the other Miele models (S6 or S8) as they are way more expensive and offer mostly only bells and whistles. No performance difference but supposedly made with better plastic and a better sealed case. See Topaz S6 on CU test and Jasper S6. Interestingly if you check particulate exhaust, all the Miele models do very well and all can except HEPA. This too is what makes the Delphi a good choice.
How long have you owned it:
A month or less
Yes, I would recommend this to a friend.
By Val in NYC
from New York, NY
Easy To Empty
Easy to Use
Great on carpets
Picks up cat hair
Short Power Cord
We have a 100% wool, very low pile wall-to-wall in the living room and dressing room. Although the cord is shorter than others, this vacuum is a dream. Long hose, long telescopic wand, great accessories and the power brush roll can be turned on or off...oh, and there are at least 6 carpet height adjustments. It weighs nothing at all. The parts are all made of quality plastic and steel (and the wheels will not damage your wood floors). <br /><br />I previously had a large, bagged Hoover upright, followed by a cheap plastic, bagless Hoover upright which practically ate my carpet. And all that dust & cleaning one had to do with the bagless...no more!! No cheap vacuums for me anymore. If I had to do it all over again I think I would buy one of the $600-800 Mieles. The only vacuums with 7 year warranty on motor and 7 year warranty on parts.<br /><br />My housekeeper and I are in heaven!