- Don't know which 3Kg cordless vacuum you are referring to, but from my hands-on experience with several decent cordless ones.
- Dyson V11 body, which I know is the heaviest of all Dyson models before it, weighs 1.8 Kgs. V7 or V8 easily weighs considerably less compared to V11 as the bin and battery capacity is almost half.
- Roidmi F8 body weighs almost 1 to 1.2Kg.
- Deerma VC20 body weighs less than a kilo.
V11 costs north of 40k. Deerma VC20 has too many complaints about service and QC. Roidmi comes with puny suction power and I would rather use a broomstick than use something like this. Why to even pay 12k or something when I can get a handheld cleaner for 3k-4k. Something like Dyson V11 is good for simple cleaning and show-off. For most households where a lot of dust accumulates, it simply cannot match the power of a corded canister vacuum cleaner like PowerPro or LG's new cleaners. It simply cannot.
If I have to buy 2nd-grade and 3rd-grade cleaners from Roidmi etc to have super low weight, I would rather buy a broomstick that can reach every single corner and it only weighs 200 grams or so. There is no need to charge it at all, no need to plug it into anything. Less weight does not mean better, isn't it?
Then there is the problem with capacity. My kids tore huge thermocol board to bits and in one shot, I cleaned it up and dumped the waste from cannister into the bit. That would not fit a cordless cleaner. There are many such instances that goes against these micro cleaners. They are good for things that fall in that small sweet spot. Anything outside of that, they are not useful. Especially given the premium price these cleaners command.
- The heaviest attachment on most of the cordless vacuums is the motorised brush, which won't be used for overhead cleaning anyways.
Even with a 2.0kg-2.5kg weight (with minimal accessories), lifting it up to do heavy dusting is not the ideal way. Overhead cleaning in such way negates the need for vacuum cleaner. Floor cleaning, yes, these things will beat corded ones. But when compared over all cleaning needs, a cordless is just not the way. Not yet.
- I for one have been religiously using vacuums every single day for over a decade now, there were hardly a couple of instances where the full run time surpassed an hour.
- Most of the cordless vacuums last for at least half an hour, which is good enough for realistic household usage.
- Not exactly an apples to apple comparison, but Dyson lasts over 75mins in Eco mode and 45mins in Medium and 8 mins in High.
In my two years of ownership, I never needed or used high mode even once, as the suction in the rest of the modes is good enough.
- Not sure which attachments you were referring to, but I feel the standard attachments are fairly the same regardless of corded/cordless.
In fact, cordless ones come with additional motorised brushes, which most of the corded vacuums don't come with.
Last year, I was away for 10 months. Do this twice and there is an extremely high chance of battery damage. You can say that the battery can be replaced. But why should I pay 40k+ and have battery concern when I can pay 1/4th that price and have no such concern. Do you know that many vacuum cleaner brands are not having enough service centers and they ask you to courier parts to their service hub? Why should I even take this hassle? Whatever the brand is, they are Lithium-Ion batteries and batteries degrade over time. Forget about 2 years, 5 years down the line you have a dead battery, and what happens when the battery is not in stock anymore? What do you do? Buy another one for 50k?
- Regarding the reach, most Karcher vacuums come with even longer hoses and telescopic extension tubes, and they themselves are painful to operate at heights.
Barely reaching out with a crevice tool is one thing and operating with ease regardless of the position is a whole another story.
- Even the cheapest Dyson V7 has more than enough suction for regular household usage.
They operate by agitating the dust on the floor/surface with the motorised tools and hence don't need a powerful suction at all.
With a manual brush, which is fairly common on corded ones, they need brute suction force to lift the dust and hence powerful specs usually.
- I've been using my V11 for 2 years now, daily usage for 1st year and occasional usage since switching to a Robo vacuum, I'm yet to see the degradation of battery life.
It still gives 75+ mins on a single charge.
This is the current backup on my V11 which was charged almost 2 months ago and barely used a couple of mins since then.
If you mean VC 4i from Karcher, the story is more or less the same. Costs 30k and has average to above average reviews. No service centres in India, very weak motor/suction. You may feel that powerful suction is not required for you. For a house that gets lot of dust, having powerful motor is a big advantage. Why should I pay 30k+ and have less of everything (suction power, reach, accessories, service options) when I can pay 1/4th of that and have better features and better motor/suction?
- Regarding the cost, yes they command a premium for what they offer and the no questions asked service that Dyson is famous for.
- When it comes to price, I don't think that is a valid statement or comparison
, it's like saying for the cost of an iPhone one can buy a good 5G phone+Laptop+Tablet+DSLR etc.
Unlike iPhone, Dyson doesn't charge 3x 4x for what it actually delivers 
Even if you bring in this iPhone logic, for a normal person, a good Android phone for 30k can save a lot of money and bring more features to him/her. Anyways, iPhones, like cordless cleaners are not the best of the bunch when it comes to all-round performance and value for money. In the case of vacuum cleaners, products like Philips PowerPro are one of the best one can get and costs under 8k now. Where is 40k and where is 7k? I am getting lot more features for 7k than for 40k and I have a brand that is as reliable as Dyson in electrical equipment and is as trustworthy as Dyson. So, this is not an iPhones vs other phones situation. This is a proper 'why pay so much when I can get more for less' situation.
I was in the same thought process, in fact, used similar arguments before switching to cordless.
Having used a
Karcher water filter vacuum for 5 years, an 8-year-old
Black & Decker VH780 for light usage, before switching to cordless,
The amount of practicality and convenience of cordless vacuums nullifies all the cons.
In a realistic household scenario, say one wanted to quickly clean a spot or quickly vacuum a room.
Let us be practical. In a realistic household scenario, if I have to clean a particular spot, I would use a broom or sponge towel. This is the fastest way. Why even bring a vacuum cleaner (be it cordless or corded or handheld). This is the preferred method. We would get WTF look from mom and wife if we start pulling vacuum cleaners for everything. Also, most households have maids who do normal floor cleaning and the majority of them do a good job. This further negates the need for cordless cleaner. Even for self-cleaning, I would rather have a Robot vacuum cleaner for floor cleaning if I do not want to put any effort. Let it turn on at night and by morning, the floor is clean. So, why do I even have to think of a cordless cleaner when I can have a maid/robot cleaner for the floor and a powerful vacuum cleaner for deep cleaning. Still, I would end up spending less than what I have to spend for something like Dyson V11.
Once the initial rush is over, you'd really think twice before unwinding the cord, connect the hoses/attachments, reaching out to plug before starting to use it.
Also, once done, again remove all the attachments and store the unit back.
Trust me, you'd easily fall back to broom in such cases.
This is where cordless vacuums change the game, almost all cordless ones can be docked with a floor attachment and are always fully charged on the dock.
All you need is a quick run over the area and leave it back to the dock. In fact less time/effort than a broom.
I'm not saying Dyson is the best and everyone should go and buy a Dyson.
All I'm trying to say is that, gone are the days when the cons of cordless vacuums outweighed the pros, it's the other way around with the latest cordless vacuums, which make it a better purchase over a corded vacuum.
Yes, cordless ones are changing the game but like I said, a cordless cleaner cannot replace a proper vacuum cleaner for proper/deep cleaning. They can at the max be ideal purchase for floor/carpet cleaning. They have to shed more weight to make it easy to lift and hold for extended time. They have to get better battery tech (probably solid-state batteries may make them more reliable). But more importantly, they have to get into mainstream price range. 40k+ for a cleaner with such low suction power and backup/capacity keeps them out of reach for majority.
In short, for all-round usage and for deep clean, they are an absolute waste of money. Also, Dyson is the only brand that has reliable cordless cleaners and they charge too much of logo tax (should I say Dyson tax?). Others are 'me too' models for buyers to say 'hey, look. I have this cute little cleaner that is not really working out for me'.
If you are talking about motor heat, I can guarantee that a high air flow machine will run cooler vs a model with lower air flow, that's just logic. You can design 2 machines with the same exact motor but different blade design and chamber/housing. Which can result in a machine with super suction or you can get a machine with super blowing capacity but poor suction, or you can get a balanced machine. Having owned and demoed lots of home vacs, they run hotter are noiser for the given suction/flow. Even in dust extractors a machine with lower air flow would run hotter compared to machine with higher air flow.
And yet mine has run without cutting out. As I said, looks like you are using too much paper logic and industrial usage requirements and applying that logic for 'domestic' cleaners like the Philips PowerPro. This one is noisy, but it is doing its job really well and does not overheat. I do not mind this and this is one of the best-selling models in vacuum cleaners.
Are dust extractors bulky , yes but not by much compared to a house hold vac, all dust extractors are taller, while one may rarely use the wet feature, the huge tank capacity means you will only need to empty it after several months to years depending on your dust situation. Because they sort of have a universal mounts and accessories, you can add extra lengths of hose, some models even have a anti static hoses where the dust doesn't like to stick to the hose walls.
Whats wrong with having good build quality for home use, they will last for decades, home use ones are all bling not exactly built tough.
New-gen ones are pretty well built and are enough for home use. Just because a war tank is super strong does not mean that I buy a tank to drive to an office. After the cleaning session, I open the canister, dump the waste into the bin and close it. This hardly takes a minute or two to do. Why should even think of dragging a mega cleaner through the house just because I can forget about dumping dirt out for years. I would rather take one that is easier to pull around than take one that is hard to drag around every single minute of the cleaning session. The standard set of accessories that comes with majority of home cleaners are good enough. And why would we even think of anti static hoses and other stuff for home usage? Who cares if some dust sticks to hose inside wall?
This is why one does not buy industrial cleaners for home use. This is why one should not take industrial cleaning knowledge and rub it on domestic users. Home is home, warehouse is warehouse. One meant for warehouse must stay in warehouse, one meant for home use must stay in home.
The new generation canister cleaners like Philips PowerPro provide best of both worlds (traditional aluminum drum cleaners, compact and easy to carry cordless ones). These are as powerful and in many cases more powerful than cleaners like WD3 (Karcher) and yet they are easy to move around in the house and easy to store after a cleaning session. Not having a bag to store dirt makes them super easy to clean and re-use.
