At-home Hyperbaric Oxygen Therapy · Auckland, NZ
Hyperbaric Oxygen Therapy, delivered to your home.
Cocoon combines an individual assessment, a tailored HBOT programme and personal support throughout, all in your own home.
More than just a chamber.
No pressure, no obligation — just a conversation about whether HBOT is right for you.
Conditions we support
When recovery stalls, people start looking for answers.
From concussion and long COVID to chronic fatigue, dysautonomia and recovery challenges, these are some of the most common reasons people come to Cocoon.
Concussion & Brain Injury
Brain fog, headaches and fatigue that linger long after the knock.
Find out more →
Long COVID & Post-Viral Fatigue
Exhaustion, breathlessness and brain fog that won’t seem to lift.
Find out more →
Chronic Pain & Fibromyalgia
Persistent pain and tenderness that wears you down day after day.
Find out more →
Athletic Recovery & Performance
Recovering well between hard training, events and competition.
Find out more →
Supporting Cancer Recovery
Gentle support for the body through a demanding time.
Find out more →
Dysautonomia
Dizziness, racing heart and a nervous system that feels out of sync.
Find out more →Getting started with Cocoon
Your HBOT journey starts with the right guidance.
From your first enquiry to your personalised programme at home, Cocoon provides professional assessment, practical training and personal support every step of the way.
Included in your setup
- Hyperbaric oxygen chamber
- Oxygen concentrator
- Air compressor
What you'll need
- Suitable space in your home
- Standard household power
- No renovation required
Individual suitability assessment, professional setup and training, with ongoing support throughout your programme.
The people behind Cocoon
Born from personal experience. Guided by people who understand.
Following a serious brain injury in 2019, Dr Gary Dennis experienced the challenges of recovery first-hand. His own experience with hyperbaric oxygen therapy inspired a different approach — bringing HBOT into people's homes, with the guidance and support they need.
Together with Dr Lorene Dennis, Gary established Cocoon around a simple belief: HBOT should be personal, accessible and supported by an individual programme, not simply the delivery of a chamber.
Read our story
Dr Gary Dennis
Founder · HBOT assessment and
programme guidance
Dr Lorene Dennis
Personal support and
programme coordination
From real people, in their own words.
"I had had long covid for 3 years before I started on this programme. I was very apprehensive and a little scared to start with. Hamish was very kind and patient with me. He set it all up and showed me how to use it correctly and only a phone call away if I needed anything. It was nice to have it at home and not have to go out each day. I stuck with a routine of using it mid morning each day for 90min. I was concerned I wouldn't remember the instructions as my memory was terrible and my brain was very foggy but it's all written out and very easy to follow. I added an extra mattress and pillows for extra comfort. I could sit up or lay down in the cocoon I had. I watched movies and TV on my phone for the 90min each day. It was very relaxing. I felt the oxygen cocoon work for me on the third day of using it! I couldn't believe it. My head was clearer, I could think properly, it was truly amazing. I had finally found my miracle. I would highly recommend this programme to anyone that has long covid. Give it a try. It worked for me."
"Our son had concussion for a long time and we could not find anyone to help until we were referred to Dr Gary. He was wonderful with our son and we really appreciated how much he cares for his patients and wants to see them get better. The hyperbaric chamber worked wonders and our son made rapid progress in recovering from his concussions which was life changing. We got our happy bubbly little boy back and he is now back in school full time and able to do all of the activities he loves. Dr Gary was very accomodating and we found we were always able to contact him for advice. Highly recommend this business."
"I can absolutely recommend Cocoon if you are thinking of renting or buying a hyperbaric chamber. I had dealings with several companies before deciding on Cocoon, and I can say that the enquiry experience was far superior in every way with Cocoon. Doctors Loraine and Gary Denis are extremely helpful, knowledgable and truly care about their clients and patients. I opted for a full Neurocare program with Dr Gary after years of chronic undiagnosed illness, along with the rental of a chamber, and it has been an absolute game changer for my health. Not only has the program and support set me well on the road to recovery, the whole team (including Caroline the Account Manager) showed support, compassion, flexibility and gave me complete confidence that I would be able to heal. If you are hiring or buying an HBOT, I really recommend hiring from health professionals who can advise you correctly and I am confident you will be pleased you chose Cocoon."
New to HBOT?
Why are more people exploring HBOT?
You may be hearing more about hyperbaric oxygen therapy lately. While HBOT has been used in clinical settings for decades, more people are now exploring it as a way to support recovery, brain health, energy and overall wellbeing.
Drug-free and non-invasive
A gentle therapy that works alongside the care you're already receiving.
Supported by decades of research
HBOT has been used in clinical settings for decades and continues to be studied across a wide range of applications.
Recovery fits into daily life
At-home HBOT removes the need for daily clinic visits, making consistency easier.
Personalised guidance matters
HBOT isn't one-size-fits-all. That's why every Cocoon programme is built around your goals and circumstances.
Why consistency matters
The hard part was never the chamber — it’s doing it every day
HBOT isn’t a one-off. It’s a course of regular sessions, usually done daily over several weeks — and doing it consistently is the part that matters. That’s exactly where a clinic makes life hard: getting there every single day is tiring and expensive. It was the wall Gary hit himself, and it’s why Cocoon brings the programme home.
Daily clinic visits
The usual way
Daily sessions at home
With Cocoon
HBOT is meant to be done consistently. Home is what makes consistency possible.
Why Cocoon
The difference isn’t the equipment. It’s the people behind it.
What makes the biggest difference isn’t the chamber itself. It’s the experience guiding the programme, the support behind it, and the people who help you stay on track.
Registered HBOT practitioner
Clinical oversight included
Personalised protocols
Built around your situation
Ongoing support
Throughout your programme
Led by a registered practitioner
Gary is a registered functional HBOT practitioner who oversees every programme personally — not a clinic that simply added HBOT to its list of services.
Real clinical depth
Clinical experience supporting adults, children and complex recovery journeys.
Built by someone who lived it
Gary created Cocoon after his own brain injury. He had the problem you have — and built the answer he wished had existed.
Read Gary’s story →The chamber is important. The guidance, experience and support behind it are what make the difference.
Your peace of mind
Gentle by design — and you’re never on your own
It’s natural to have questions about safety, especially when considering HBOT at home. That's why every programme begins with a suitability assessment, full setup and ongoing practitioner support.
Low-pressure & gentle
Our soft-shell chambers use mild, low-pressure HBOT — far gentler than the high-pressure chambers used in hospitals.
Assessed for suitability
Before you start, we check that HBOT is appropriate for you. It isn’t right for everyone — and if it’s not, we’ll tell you honestly.
Set up & shown how
We install everything and walk you through safe, confident use — right from your very first session.
Guided throughout
A registered practitioner oversees your programme and is only a message away whenever you need them.
Frequently asked questions
Questions people often ask.
Understanding what's involved is an important part of deciding whether at-home HBOT is right for you.
How do I know if HBOT is right for me?
HBOT isn't suitable for everyone, which is why Cocoon begins with a comprehensive individual assessment conducted by Dr Gary Dennis, who holds specialist qualifications in hyperbaric oxygen therapy.
He takes the time to understand your health history, individual circumstances and goals before assessing whether HBOT is appropriate and recommending a personalised programme where suitable.
What is included in my Cocoon programme?
Cocoon is much more than a chamber rental. Your programme begins with a full individual assessment with Dr Gary Dennis to understand your circumstances, assess suitability and determine the most appropriate HBOT protocol for you.
Your programme also includes a personalised treatment plan, delivery and setup of the hyperbaric chamber, oxygen concentrator and air compressor, practical training, unlimited daily home use in line with your recommended protocol, and ongoing guidance and support throughout.
The assessment, tailored protocol and personal support are fundamental parts of the Cocoon service, not optional extras.
How much space do I need at home?
A suitable area in a spare room, bedroom or living space is generally all that's required, along with access to standard household power. No renovations are necessary.
We'll discuss your available space before delivery and arrange the equipment setup and training so you understand how everything works.
How often will I need to use the chamber?
There isn't a single HBOT schedule that's appropriate for everyone. Your recommended session frequency and duration are determined through your individual assessment and personalised programme.
With the chamber in your home, you can follow your recommended protocol without travelling to a clinic for each session. You'll have unlimited daily access to the equipment during your rental, with guidance from the Cocoon team.
How does pricing work?
Cocoon offers a complete, guided at-home HBOT programme, with no per-session fees or long-term lock-in contracts.
Your programme includes a comprehensive individual assessment, a tailored HBOT protocol, chamber delivery and setup, unlimited daily home use, and ongoing personal support.
We'll discuss the recommended programme duration, explain exactly what's included and provide clear pricing before you make any commitment.
Contact our team for programme and pricing information — with no obligation.
Ready when you are
Let's talk about whether HBOT is right for you.
Every journey starts with a conversation. Tell us a little about your circumstances and we'll help you understand what's involved, discuss your options and provide clear programme and pricing information.
Enquire about HBOTNo pressure. No obligation. Just a conversation.
Prefer to talk? Call 022 067 2277 or email info@cocoon.net.nz