Note:
Because of the high demand, we regret to inform you that once our current stock runs out - we can't maintain this special discount offer.
We also must inform you that the product is unavailable for purchase on Amazon and eBay.
For more details on the remaining quantity, please scroll down.
Heimly™ Cat Allergen Neutralizing Diffuser
Couldn't load pickup availability
How it Works
How it Works
Your cat naturally releases tiny allergens into the air every day.
These allergens stay suspended in your home and trigger sneezing, congestion, itchy eyes and other allergy symptoms.
Heimly continuously releases its neutralizing formula into the air, helping deactivate these allergens before they trigger your immune response.
When can I expect to see results?
When can I expect to see results?
Most Heimly users notice a clear reduction in allergy symptoms within 24–48 hours. For best results, keep it plugged in.
Millions of cat owners live with sneezing, congestion and itchy eyes because of one tiny protein called Fel d 1. Many believe the only solution is medication... or giving up their cat. Heimly was created so that doesn't have to be the case.
Trusted by 27,000+ Allergy Sufferers!
-
I love my cat, but the allergies were killing me. Within a couple of days of plugging in Heimly, I wasn’t constantly sneezing anymore. Now I can actually relax at home without feeling congested. I even ordered more units to cover the other rooms, huge difference.
-
I didn't want to tell anyone that I had cat allergies because I was embarrassed by my constant sniffling around felines. I ordered Heimly because I was desperate. It came quickly, was easy to use, silent and no weird smell at all. No more nighttime congestion after a week. I haven't had a stuffy nose in 6 weeks now, even when my friends bring their cats over. A lifesaver!
-
I was waking up every morning with congestion and couldn't figure out what was going on until I realized it was cat dander from my neighbor's cats coming through the vents. We tried air purifiers and allergy pills that didn't work, but Heimly made a difference in just a few days. Not a single morning sneeze after 4 days. I can finally breathe soundly again!
Put an end to cat allergies once and for all.
Traditional allergy treatments only mask the symptoms you feel, not the cat dander hiding deep inside your carpets, upholstery, or air vents.
Doctors prescribe expensive medications for temporary relief and rely on recurring visits to keep making money.
Heimly works differently. Using advanced allergen neutralization technology, it continuously disperses protective compounds that are 100% safe for humans and pets but neutralize 100% of airborne cat allergens at the molecular level, transforming your entire home into an environment where cat allergies simply can't thrive.
Cat Allergens Are Always There Even When You Can't See Them
Cat dander isn't just pet hair. It's made of microscopic particles like skin flakes, saliva proteins, and allergen waste that circulate through your home every day.
Even in clean spaces, these particles settle into your bedding, furniture, and carpets — constantly getting released back into the air.
That's why symptoms like sneezing, congestion, and irritation never fully go away.
A Smarter Way to Handle Cat Allergies
You've tried air purifiers, allergy pills, and expensive treatments. They all do the same thing - treat symptoms while cat allergens keep circulating.
Heimly is different. It neutralizes cat allergens at the molecular level before they trigger your reactions. No more morning congestion. No more avoiding cats.
It works automatically and invisibly - giving you back the comfort you deserve in your own home.
Over 214,000 customers have discovered what it feels like to breathe freely around cats again. Many wish they'd found Heimly years ago.
Relief From Cat Allergies in 3 Simple Steps
Heimly works quietly in the background to help reduce cat allergen exposure — so your home feels comfortable, peaceful, and easier to breathe in.
Plug it in
Place Heimly in the room where cat allergens bother you most. It starts working immediately — no setup, no noise, and nothing to manage day to day.
Cat allergen protection fills the room
Heimly continuously disperses its formula throughout the space, helping neutralize airborne cat dander and feline allergens before they keep circulating.
Breathe easier every day
As allergen exposure drops, your space feels more comfortable. Replace the refill every 30 days to maintain protection.
Frequently Asked Questions
How does Heimly neutralize cat allergens?
How does Heimly neutralize cat allergens?
Heimly uses advanced allergen neutralization technology that continuously works throughout your space. These compounds help reduce cat allergens primarily proteins like Fel d 1 found in dander and saliva—supporting a cleaner, more comfortable home environment where you can breathe easier.
How long will it take to see results?
How long will it take to see results?
Most customers notice improvements within the first 24 hours - fewer sneezes and less eye irritation. By day 3, congestion starts easing and sleep improves. Full benefits typically develop over 5 days of continuous use.
Is there any smell when it's running?
Is there any smell when it's running?
Heimly is completely odorless during normal operation. The neutralizing compounds are undetectable to humans and pets. If you notice any unusual smell, please contact our support team for assistance.
Should I unplug Heimly at night?
Should I unplug Heimly at night?
No! Keep Heimly running 24/7 for continuous protection. Cat allergens (like dander) stay in the air and on surfaces all day, especially if you have a cat at home. Running the device continuously helps reduce these allergens and keeps your air cleaner. It’s especially important at night, when you’re in close contact with bedding where allergens can build up. The device is designed for continuous use and consumes minimal energy.
How often should I replace the refill?
How often should I replace the refill?
Replace the neutralizing compound refill every 30 days for optimal effectiveness. We recommend setting up a subscription to ensure you never run out of protection.
Is Heimly safe for children and pets?
Is Heimly safe for children and pets?
Yes, Heimly is completely safe for families. The neutralizing compounds are non-toxic, drug-free, and specifically designed to only target dust allergens - not humans or pets.
What's the difference between Heimly and air purifiers?
What's the difference between Heimly and air purifiers?
Air purifiers try to capture particles after they're already airborne. Heimly neutralizes allergens at the source, making them harmless even if they remain in your space. Plus, there are no filters to replace or loud fans running constantly.
Can I use multiple Heimly units in my home?
Can I use multiple Heimly units in my home?
Absolutely! Many customers use multiple units - one per room where they spend significant time. Each unit treats approximately 300 square feet effectively