What Are These Devices and Why Do They Matter?

The Hillrom Monarch airway clearance system and AffloVest are High Frequency Chest Wall Oscillation (HFCWO) therapy devices. These vests are for conditions where mucus builds up in the lungs — such as cystic fibrosis, bronchiectasis, or neuromuscular disorders — and help thin and mobilize secretions so they can be coughed or suctioned out more easily.

How They Deliver Therapy

Hillrom Monarch Airway Clearance System
This system uses pulmonary oscillating discs (PODs) embedded in the vest that deliver targeted kinetic energy and create airflow inside the lungs to thin and move mucus. It’s truly mobile — battery-powered and doesn’t need to be plugged into a generator — so you can move around during treatment. The PODs are positioned over both upper and lower lung lobes to focus therapy where it’s needed.

AffloVest
AffloVest also provides HFCWO therapy without bulky external generators or hoses. Its patented Direct Dynamic Oscillation technology uses multiple motors built into the vest to create oscillations that mimic manual chest physiotherapy. You can select different modes (like Percussion, Vibration, and Drainage) and levels of intensity to tailor the experience in ways that resemble hand-held therapy.

Key Differences in Technology

Oscillation Method:

• Monarch: Eight discrete oscillating discs that deliver pulses and airflow specifically targeted to lung lobes.
• AffloVest: Multiple continuous oscillating motors that work across chest zones to mimic manual therapy patterns.

Mobility:

• Monarch: Designed from the ground up as a mobile device — battery operated, no hoses or wall-mounted generator required.
• AffloVest: Also designed to be fully mobile and self-contained.

Customization:

• Monarch: Static oscillation profile focused on kinetic energy and airflow delivery.
• AffloVest: Offers multiple therapy modes for different frequencies and wave patterns, which some clinicians and patients feel better mimic hand chest physiotherapy

Reported Performance Highlights

• Airflow & Energy Output:
  Independent testing (not head-to-head clinical trials) suggests the Monarch system can generate higher airflow and kinetic energy designed to mobilize secretions, compared to AffloVest under certain test settings. However, the clinical significance of this difference for real-world outcomes hasn’t been definitively established
• Modes & Patterns:
  AffloVest’s distinct modes can be attractive if your clinician wants to adjust therapy patterns that simulate manual chest physical therapy. Monarch focuses on delivering consistent oscillation and airflow with its POD technology.

Fit, Comfort, and Usability

• Fit and Sizes:
  AffloVest is available in multiple sizes to ensure a better individualized fit, which can improve comfort and adherence.
  Monarch also aims for a secure, athletic fit.

• Comfort:
  User experience varies: some find AffloVest softer and more comfortable over long sessions, while others appreciate the targeted feel of the Monarch system. 
• Mobility:
  Both systems are designed to let you go about normal activities during therapy — a major advantage over older tethered systems.

Prescription and Insurance

Both systems require a healthcare provider’s prescription, and they are cleared by the FDA for HFCWO therapy. AffloVest has widely used HCPCS codes for insurance reimbursement (E0483). Monarch also qualifies under similar therapy categories, and many insurers cover it as a medically necessary device.

Final Thoughts Before Purchasing 

Choosing between these two devices isn’t about one being universally 'better' — it ultimately depends on your individual needs, clinical goals, and the recommendation of your respiratory care team. If customizable therapy modes, comfort, and a softer vest are priorities, some patients and clinicians lean toward AffloVest. If targeted airflow generation and a proven kinetic energy  delivery system are key (with Wi-Fi data connectivity for clinician review), the Monarch system is worth discussing with your doctor.
Always consult your pulmonologist, respiratory therapist, or prescribing clinician to choose the system that fits your health profile, therapy goals, and lifestyle.