what is the difference between the B400 and the HM400 units?

no difference, they are the same thing. Austin Air uses both for the same unit.

Mine seems to thrum unevenly, as if the motor is off balance. Is that normal?

Mine does this occasionally, especially after switching from a higher fan speed to a lower one. It usually normalizes within a few minutes though.

how many square feet does it cover?

1500 sq ft on high. This should used more for comparison levels because most of the time you should run the unit on low or medium. Normally we recommend to our clients to run on high for a few hours when they first get it and then low to medium. If something happens to give a high contaminant in the area, then raise to high temporarily to alleviate the situation. We also recommend to over not run right up to your room size limits. More air changes are better than fewer. Lastly, keep in mind that walls, doors, furniture obstruct airflow too. — Thank you, Barb Lulay at USAirPurifiers.com

Austin Air Healthmate Standard Air Purifier Black Advanced 4 Stage

Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

Help Track order

Account Cart

Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

Help Track order

Account Cart

Buy anything from 5,000+ international stores. One checkout price. No surprise fees. Join 2M+ shoppers on Desertcart.

VT405822

Duties & taxes included

In stock

Sold byAmazon VanuatuDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Vanuatu.

Secure transaction

Description

🌬️ Elevate your air game — because your lungs deserve VIP treatment.

ODOR CHEMICAL NEUTRALIZER - Activated Carbon & Zeolite eliminate smoke, pet odors, and harmful gases.
QUIET YET POWERFUL OPERATION - Efficient airflow with minimal noise, ideal for bedrooms and focused work.
WIDE COVERAGE FOR HOME OFFICE - Purifies up to 700 sq ft, perfect for open spaces and work zones.
COMPREHENSIVE 4 STAGE FILTRATION - From dust to VOCs, breathe only the cleanest air.
LONG LASTING LOW MAINTENANCE FILTERS - Up to 5 years of powerful air purification without frequent replacements.

The Austin Air HealthMate Standard B400 is a robust air purifier featuring a true medical-grade HEPA filter combined with activated carbon and zeolite for advanced 4-stage filtration. Designed to cover up to 700 square feet, it effectively removes dust, allergens, smoke, VOCs, and odors while operating quietly. With a durable build and filters lasting up to 5 years, it offers a low-maintenance, high-performance solution for healthier indoor air in homes and offices.

Specifications

ASIN	B0007Y830I
Best Sellers Rank	#797,860 in Home & Kitchen ( See Top 100 in Home & Kitchen ) #764 in HEPA Filter Air Purifiers
Brand	Austin Air
Brand Name	Austin Air
Color	Black
Contaminant Filtration Capability	True
Control Method	Touch
Controller Type	Button Control
Customer Reviews	4.3 out of 5 stars 234 Reviews
EU Spare Part Availability Duration	5 Years
Filter Class	HEPAFilterClass
Filter Type	HEPA
Floor Area	1500 Square Feet
Global Trade Identification Number	00769100216901
Included Components	Air Purifier
Item Dimensions D x W x H	19"D x 27"W x 19"H
Item Type Name	B400B1
Item Weight	45 Pounds
Manufacturer	Austin Air
Model Number	B400B1
Noise Level	62 Decibels
Part Number	B400B1
Power Source	AC
Product Dimensions	19"D x 27"W x 19"H
Specification Met	CSA Certified
UPC	720825438511 769100216901
Unit Count	1.0 Count
Warranty Description	5 year parts and labor
Wattage	115 watts

Reviews

C**E

12.08.2021

A**D

13.09.2017

J**A

6.04.2026

J**B

19.01.2014

R**A

4.02.2011

D**N

28.06.2025

D**E

27.07.2019

G**F

6.04.2023

N**S

21.06.2020

B**A

8.04.2019

A**R

8.01.2020

Common Questions

Are the products genuine and authentic?+

Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

How long does delivery take and is it reliable?+

Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

What is Desertcart? Is it safe to order from?+

Desertcart is an international e-commerce platform operating since 2014. We securely process thousands of orders globally each day. Every product goes through our quality verification process before delivery, and we provide end-to-end order tracking, 24/7 customer support, and a comprehensive returns policy to ensure a safe shopping experience.

How is product pricing calculated?+

Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Ali H.

Fast shipping and excellent packaging. The Leatherman tool feels very premium and sturdy.

1 day ago

Khalid Z.

Great experience from order to delivery. Highly recommended!

1 week ago

View all Trustpilot reviews

Buy anything from 5,000+ international stores. One checkout price. No surprise fees. Join 2M+ shoppers on Desertcart.

VT405822

Duties & taxes included

In stock

Sold byAmazon VanuatuDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Vanuatu.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Suresh K.

Very impressed with the quality and fast delivery. Will shop here again.

4 days ago

Ravi S.

I loved the variety of products available. Will definitely shop again.

2 months ago