AirDoctor AD3500 3-Stage UltraHEPA Air Purifier vs Winix 5510 4-Stage True HEPA Air Purifier with Wi-Fi, Polished Charcoal Gray
These are side-by-side facts taken from each product guide: published specifications, strengths and caveats as their sources state them. This page is not a test, a ranking or a verdict about which model is better.
AirDoctor AD3500 3-Stage UltraHEPA Air Purifier
Rooms up to about 630 sq ft by AirDoctor's four-changes-per-hour figure
AirDoctor's AD3500 pairs a carbon filter with potassium permanganate and an UltraHEPA filter behind a pre-filter. AirDoctor gives 630 square feet at four air changes per hour and a 340 CFM smoke CADR. Carbon is changed every six months, UltraHEPA yearly, under a one-year warranty.
Published specifications
- AirDoctor: 630 sq ft at 4 air changes per hour
- AirDoctor: smoke CADR 340 CFM (standard not stated)
- AirDoctor: 15.75 W x 8.75 D x 23 H in, 18 lb
- Listing: carbon every 6 months, UltraHEPA every 12
- Listing: PM2.5 auto mode, 4 fan speeds, timer
- AirDoctor: one-year limited warranty, service fee applies
Strengths
- Listing describes a carbon stage with potassium permanganate
- Clear four-changes-per-hour room figure from the maker
- Filters shared with the older AD3000
Caveats
- Carbon filter needs replacing every six months
- One-year warranty with a shipping and processing fee
- No manual found online for clearance or cleaning
Read the full AirDoctor AD3500 3-Stage UltraHEPA Air Purifier guide
Winix 5510 4-Stage True HEPA Air Purifier with Wi-Fi, Polished Charcoal Gray
Rooms near 392 sq ft that benefit from auto mode and app control
Winix's 5510 uses a washable pre-filter, an AOC carbon filter and a True HEPA filter, with switchable PlasmaWave and a light-sensing sleep mode. It is AHAM Verified for 392 square feet. Plan on Filter Q about yearly, 12 to 18 inches of clearance, and a two-year warranty with no repair service after it ends.
Published specifications
- Winix page: AHAM Verified 392 sq ft, 4.8 air changes per hour
- Winix page: CADR dust 252, pollen 247, smoke 253
- Manual: Filter Q 1712-0123-00; HEPA and carbon about 12 months
- Manual: pre-filter cleaned every 14 days
- Manual: 12–18 in clearance; 120 V, 65 W
- Winix: two-year limited warranty, USA and Canada
Strengths
- Maker publishes AHAM Verified size and CADR
- Auto mode, sleep mode and app control
- Sleep mode turns off PlasmaWave and the air-quality light
Caveats
- 392 sq ft verified size versus 1,882 sq ft headline
- No repair service or spare parts after two years
- Amazon's CADR order and dimensions differ from Winix
Read the full Winix 5510 4-Stage True HEPA Air Purifier with Wi-Fi, Polished Charcoal Gray guide
How to choose between them
Choose the AirDoctor AD3500 3-Stage UltraHEPA Air Purifier if your situation matches: Rooms up to about 630 sq ft by AirDoctor's four-changes-per-hour figure. Its main caveat: Carbon filter needs replacing every six months.
Choose the Winix 5510 4-Stage True HEPA Air Purifier with Wi-Fi, Polished Charcoal Gray if your situation matches: Rooms near 392 sq ft that benefit from auto mode and app control. Its main caveat: 392 sq ft verified size versus 1,882 sq ft headline.
Both entries repeat what each guide records. Confirm the model, included parts and availability on the current listing before ordering.
Primary sources
- AirDoctor product page for the AirDoctor 3500 Source for AirDoctor AD3500 3-Stage UltraHEPA Air Purifier
- AirDoctor 3000-series replacement filters for AD3500 and AD3000 Source for AirDoctor AD3500 3-Stage UltraHEPA Air Purifier
- AirDoctor one-year limited warranty page Source for AirDoctor AD3500 3-Stage UltraHEPA Air Purifier
- Winix product page for the 5510 air purifier Source for Winix 5510 4-Stage True HEPA Air Purifier with Wi-Fi, Polished Charcoal Gray
- Winix 5510 and 5520 user manual Source for Winix 5510 4-Stage True HEPA Air Purifier with Wi-Fi, Polished Charcoal Gray
Primary sources checked .