About HHZ Respiratory Review

HHZ Respiratory Review maintains a product directory of home-respiratory equipment sold in India: oxygen concentrators, CPAP machines and BiPAP devices. We compare devices against a published rubric and explain the evidence behind each review.

What we cover

Our buyer guides cover seven countries: India, the United States, the United Kingdom, Singapore, Australia, Canada, and New Zealand. These sections explain local equipment, funding, service, and travel considerations. The product directory is currently focused on India.

Reviews start with manufacturer specifications and supporting documents. We distinguish published specifications from measurements on a particular unit; reviews with bench or teardown evidence identify that evidence on the page. The protocol and scoring weights are documented on our methodology page.

Why we publish the rubric

Most of the top search results for "best oxygen concentrator India" today are written by retailers who also sell the devices, scored against criteria the reader never sees. The result is a flood of near-identical "top 10" lists that reshuffle the same six products without telling you why any of them rank where they do.

We take a different approach: the scoring rubric is published in full before it is applied, and the same rubric runs against every device in a category. When a Home Medix product, a Philips, an Oxymed, and a Yuwell are compared on a 5 LPM page, they are compared on the same axes with the same weights. If a score appears inconsistent with what the rubric says, the rubric is the authority and we will correct the score. When we borrow a loaner unit for bench testing, that loan is disclosed inside the review it informs. When we cannot verify a manufacturer claim, we say so and score only on the evidence we have.

Editorial workflow

Reviews and guides use the HHZ Editorial byline. The editorial team collects source documents, normalizes product specifications, compares devices within their category, and maintains pricing and availability information.

Reviews identify the evidence available for their conclusions. Readers can submit an outdated specification, a factual error, or a disputed score with supporting sources; our correction policy explains how corrections are handled.

Contact

For our full approach to rubric, scoring weights, and bench protocol, see How we test. For our position on samples, sponsorship, and manufacturer outreach, see Editorial policy.