Know What You're Breathing
Your HVAC system pulls air from every room in your house. We test what it captures and tell you exactly what's floating around your home.
Choose Your Test
Different starting points. Same powerful results.
MOST VERSATILEAirPatch
Stick it. Wait. Mail it. Done.
"I want answers, not a craft project."
We send you a sampling patch. Attach it to your HVAC filter for whole-home testing, place it in a problem room, or stick it on your air purifier's output to see if it's actually working. Seven days later, peel it off and mail it back.
- 4"×4" sampling patch works anywhere air moves
- Test whole home via HVAC filter
- Test a single room (basement, bedroom, nursery)
- Test your air purifier's output — is it actually working?
- Test DIY setups (box fans, Corsi-Rosenthal boxes)
- 7-day sampling period
- Results in 5–7 days after we receive it
- Prepaid return shipping
HANDS-ONFilterCut
For the hands-on homeowner.
"That dusty filter is about to become useful."
Got a filter that's been collecting dust for a month or more? Perfect. We send you heavy-duty shears and gloves. You cut a 4"×4" sample, send it back, and we tell you what your home's been breathing the whole time.
- Uses your existing used filter (30+ days old)
- Heavy-duty filter shears included (cuts wire mesh)
- Nitrile gloves included (handle safely)
- Months of accumulated data in one sample
- Results in 5–7 days after we receive it
- Prepaid return shipping included
Same Lab. Same Science. Tailored Analysis.
AirPatch and FilterCut samples go to the same accredited laboratory and receive the same detailed mold identification and spore count analysis. The difference is in how we calculate your results: AirPatch uses a controlled 7-day sampling window with continuous airflow, giving us precise data about your air quality during that period. FilterCut analyzes months of accumulated particles, giving us a longer-term picture — though with slightly more estimation since we're working backward from your filter's history. Either way, you get a clear, actionable report about what's in your air.
Pro Tip: Set Your Fan to ON
For the most accurate results, set your thermostat's fan setting to ON (not AUTO) during your sampling period. This ensures continuous airflow through your filter 24/7.
Bonus: Running your fan continuously is actually what HVAC professionals have recommended for decades — better filtration, more even temperatures, and improved air quality throughout your home.
ASHRAE 62.2 Recommended
Attaches to Any Vent
Place your AirPatch directly on a vent for targeted room testing.
How Filtration Works
Your HVAC filter captures particles from every room in your home.
Works With Any Filter
FilterCut works with all standard HVAC filter types and sizes.
Why Test Your Air?
Because you can't see what you're breathing.
Test Your Purifier
Spent $400 on an air purifier? Stick an AirPatch on the output side. If it comes back clean, money well spent. If not...
Trust but verify.No Strangers
Nobody comes to your house. Nobody judges your dishes. Nobody sees your laundry pile.
Your mess stays your business.Reports You Understand
Written in English. Not scientist. Share it with your doctor or that one family member who didn't believe you.
Proof. Finally.
Perfect For...
Basically anyone who breathes indoors.
The Allergy Sufferer
You've blamed the cat, the dog, the seasons, and your coworker's perfume. Maybe it's time to check the air.
Plot twist: it was the house.New Homeowners
You just bought a house. Exciting! But what did the previous owners leave behind... in the air?
Trust but verify.Parents
You baby-proofed the outlets. You locked the cabinets. But did you check what they're breathing?
Next level parenting.Air Purifier Owners
You bought the purifier. You replace the filters. But is it actually cleaning your air? Now you can prove it.
$59 beats wondering forever.The DIY Homeowner
You've got tools. You've got skills. Now you've got a way to test your own air quality without calling anyone.
Self-reliance. We respect it.The Curious
No symptoms. No concerns. Just want to know. That's valid. Knowledge is power.
Curiosity didn't hurt this cat.Your Filter Knows. Now You Can Too.
AirPatch or FilterCut — pick the one that fits your style. Same lab. Same science. Same answers about what you've been breathing.
Get Your Kit — $69