中国每年记录在案的人流手术至少1300万例。
又:育龄女性人数3.46亿人。
相当于平均每年1/30的女人要打胎?😑
一个女人生育年龄算20年的话,那么平均将近2/3的女人打过胎?😑
当然或许有些女人一年打5次胎被平均什么的。
或20年里光打胎打了2-3亿人😑 控制人口倒是很成功啊
结论:这年月,随便遇到两个女人都能有一个打过胎?难怪要回幼儿园啊😒
ShopVac vs HomeVac
ShopVac offers a lower price with the same power, the same or better level of air filtration by changing filters, never clogs, and is capable of cleaning cars.
Motor power, Filter, Nozzle, and Price.
ShopVac advertises "peak horsepower", it's just marketing. Power comparison is in Watts or Amp.
By definition 1 horsepower = 745.7 watts, but 2-3 "peak horsepower" is equivalent to 5-7 amp, 6-700 watts; 8-10 amp, 1000 watts would "peak 5 horsepower"; 12 amp, 1200 watts would say 6 peak horsepower.
Portable HomeVac has 200-300 watts, and cordless (battery) vacuum varies from 100-400 watts. Some upright stick/canister 5-7amp, 600-800 watts, that's a similar range with 2-3 hp ShopVac. Most canisters have 8-12 amps, or 800-1200 watts, comparable to 4-5 hp ShopVac.
Low-mid range HomeVac always avoids telling motor specs.
ShopVac peak 6 hp is good for renovation jobs but overpowered for homes.
Suction = (approx) motor power / hose(nozzle) size
Also measured by airflow velocity (CFM), and sealed pressure, affected by filter resistance. But anyway, motor power is decisive.
Bigger nozzle requires higher power. A portable 300-watt vacuum can't support a wide nozzle, 600-watt will somewhat do, but best with 1000-watt. Many people use a small portable vacuum with a wide nozzle to clean floors and carpet, of course, "This sucks bad".
ShopVac usually comes big 1-7/8 ~ 2-1/2 inch diameter hose for large debris, but HomeVac only needs a 1-1/4 ~ 1-1/2 inch hose. Similarly, a small 2-3 hp ShopVac equips only 1-1/4 hose and only a crevice nozzle. They have enough power for a wider nozzle against light home dust.
In a similar power range, HomeVac appears to have better suction power due to a smaller hose and nozzle. On the other side, it's easy to clog.
Many high-end HomeVacs equip specialty (rotating, brushed, etc) nozzles for floor, and carpet, but ShopVac does not. Those nozzles are important to fine-clean large home areas.
The filter is essential.
Mid-high level HomeVac carries better, or HEPA filter. ShopVac mostly comes with standard filters. That's why people complain that dust comes off from the back.
The smallest particle human eyes see is PM10 (hair PM 80-100).
By a popular term, the vacuum should at least filter out PM2.5 (2.5 microns).
Is HEPA (PM0.3) really necessary?
Compare To Furnace Filter:
Another way to think about filter efficiency.
My understanding:
By using the same level of filter, ShopVac would achieve the same level of air filtration efficiency as HomeVac. Whichever uses a better filter should outperform the other.
Most HomeVac doesn't have the option to replace filters, and most people don't know ShopVacs change filters and dust bags easily. Separate filter costs $20-50. Not all models sell replacement filters in Canada, it's recommended to find a filter before choosing ShopVac.
Comfort
HomeVac easily beats ShopVac in every aspect. ShopVac is uglier, bulkier, heavier, and a lot noisier.
ShopVac requires you to drag huge size containers, or carry 10-15 lb heavyweight, no convenient fancy nozzle, looks like cheap stuff, and has no pleasure at all.
ShopVac easily beats HomeVac for toughness. ShopVac never has an issue with clogging. The smallest ShopVac container is bigger than any HomeVac (0.5-2 Litre). ShopVac has easy change filters and dust bags.
Motor life may be the same under the same household environment.
ShopVac generally has a lower price for similar motor power or has a better motor with a similar price.
In the $30-50 (cad) range, 2-3.5 hp(500-600watts) ShopVac competes with portable vacuum (200-300watts). It's good for smaller condos or secondary vacuums to clean cars and pets. They rarely have replacement filter or needs to purchase separate wide nozzle. Purchasing separate filters ($20-50) and nozzles ($10-20) will take the actual price into the next category.
For $40, Lowe's Shop-Vac, Porter-Cable, and Homedepot's Ridgid are all good buys. Whichever is on sale.
About $100, 4-5 hp all-purpose ShopVac is good for medium-sized homes. 1000 watts power, wide nozzle, and available better replacement filter and dust bags. I recommend this range for most homes.
Above $150, ShopVac has a too-big container. The entire house won't fill up a 1/4 gallon HomeVac container, what will ShopVac's 18 gallons do? Higher price HomeVac and ShopVac compete in a different area, and ShopVac is no longer a good option for home cleaning.
It's ideal to have both HomeVac and ShopVac. HomeVac for indoors, ShopVac to clean cars and unclog pipes.
I don't want that many vacuums.
Pros:
Cons:
Reason for choosing:
I found it on sale.