Shark HC502 3-in-1 Clean Sense Air Purifier MAX, Heater & Fan, HEPA Filter, 1000 Sq Ft, Oscillating, Large Rooms, Kitchens, Captures 99.98% of Particles for Clean Air, Dust, Smoke & Allergens, White

Updated Review: 5 StarsInitially, I rated the Shark 3-in-1 Max Air Purifier, Heater & Fan 3 stars because the air quality sensors weren’t working properly—they always indicated 100% clean. However, I work in an old building where employees wear dirty boots and stir up dust, so I knew the air wasn’t always perfect.Recently, the sensors started working correctly. In the mornings, they indicate air quality in the 90s and gradually improve to 100. When a coworker burned their food, the air quality dropped to the 70s and took about two hours to return to 100.I love this device! It makes my office more comfortable by constantly circulating the air, whether it’s hot or cool. The heater is very quiet and keeps my office cozy. I also love the timer feature as I can set it for 9 hours when I arrive and don’t have to worry about shutting it off. When I hear it shut down, I know it’s close to my time to start shutting down as well.Wish I would have ordered another one for home. The price has significantly increased.

I have several MedifyAir air purifiers that I like but I wanted one that had a heat option because my other purifiers kick out cool air and as a result I rarely use them during winter months. With this unit you can just clean the air, or activate the heater as it cleans, or activate the fan as it cleans. Having clean air that can heat or cool your room is next level. In addition, both the fan and heater work VERY well. With some air purifiers you really don't know how well they're working but with this unit you know because the numeric readout tell you the cleanliness of your air. It's so sensitive it even detects when I open the house or garage door. And it REALLY works it's magic when you fry food. It's so quiet I wasn't even sure it was cleaning in Auto Mode but it was and as the air got worse it increased the air intake speed until the air was good, then it lowered the air intake speed. All the available settings, such as the ability to adjust temperature, available oscillation, LED light function, etc... are an added bonus. If you're thinking about this unit you will not be disappointed. One word of caution, it is big. It may not be the best choice if you have limited available space. I love Shark products and in my opinion they did VERY well with this product. We LOVE it!

This is just what our 2 story home needed. With 2 kids who have allergies it's hard to eliminate allergens like dust, smoke from outside, even our allergies we get from the rain. The timer settings and light levels are great. There's also an option to not use the fan and just keep the purifier going and it's dead silent but very effective. The fan is noisier but it cools so well, it's something that can be overlooked and in our cause not bothersome.

When used as an air filter alone, it is moderately alright for performance. It runs like garbage as an air filter when using heater mode; blowing at number 6 max is about 90% slower than it blows in regular air filter mode. It is about the speed of 1 to 2 HE401 or HE601 fans. The HE401 has 4 fans and the HE601 has 6 fans. I have 2 of those. If they had a built-in heater and the fan did not slow down like a busted twin turbo system when you switch on heat like the Shark HC502 3-in-1, I wouldn't bother with this one. The HE601 covers a room better than 2 of these for filter fan power. I'll tell you how an item works instead of giving you a bone-headed non-technical, consumer-based, emotional response about how good or bad the product made me feel, like I usually find when I am looking for advice. I will just say, before you buy, just know that the heater does work, but turning on the heater slows down the device's fan so much that it almost turns the fan off, even at max, blowing less wind than a cheap $20 space heater. You can barely hear it. When you turn off the heater, the fan kicks back to normal speed. It doesn't matter how high or low the temperature setting is; it is the mode itself. Again, it works moderately as a heater and a lot better as an air purifier, but not both at the same time. How is it expected to purify the air as a heater, when it barely pulls any air to begin with. I've just bought 2 of these at the same time and I am disappointed in this product on account of the way it is marketed versus its performance. It is not worth the near $400. Half price off would still be pushing it. The HE601 is not even worth that much, but it is closer to it than the Shark HC502 3-in-1 is.