Ventis® Replacement Parts & Sensors for All Ventis® Monitors

The Ventis® Garage is Apollo Safety's one-stop source for replacement parts, service kits, and consumables for Industrial Scientific's Ventis® line of portable gas monitors — including the Ventis® MX4, Ventis® Pro, Ventis® Pro4, and Ventis® Pro5. Whether you need a single replacement sensor, a full case rebuild, or routine maintenance items such as dust barrier kits and batteries, we stock the parts that keep your team's monitors field-ready between calibrations.

Every part is sold by Apollo Safety, a veteran-owned gas detection supplier with in-house calibration and repair service, so you get factory-supported parts backed by real technical support. Not sure which part fits your unit? Call our technical team at 508-673-2544 or request a free quote and we'll match the part to your exact model.

Find Parts for All Ventis® Models

Good to know: * Call for part — available by phone at 800-813-5408. ** Part not included in the Ventis® Pro Series — verify fit for your model before ordering.

Why Replace Your Ventis® Monitor Instead of Buying New?

A cracked case, failing alarm, or end-of-life sensor shouldn't take your monitor out of service. A typical case rebuild or sensor swap costs a fraction of a new unit, keeps your monitor on the same chargers and docking stations, and preserves your calibration settings and alarm configurations. For high-visibility or confined space programs, staying on schedule with parts and maintenance is the cheapest way to avoid downtime.

Pair your parts with the right maintenance: schedule an annual gas monitor calibration and keep calibration gases on hand so bump tests and full calibrations never slip.

More Ventis® Parts & Accessories

• Gas Monitor Parts — cases, chargers, docking stations, and components for all gas monitors
• Replacement Sensors — electrochemical, catalytic bead, and O2 sensors
• Gas Monitor Accessories — carrying cases, chargers, and DSX docking stations
• Calibration Gases — certified blends for bump testing and full calibrations
• Portable Multi-Gas Monitors — current-generation Ventis® units
• Portable Single Gas Monitors

Frequently Asked Questions

Are these OEM or aftermarket Ventis® parts?

All parts sold in the Ventis® Garage are genuine Industrial Scientific (Honeywell) OEM parts — not aftermarket equivalents.

Which Ventis® models do these parts fit?

Ventis® Garage parts fit the Ventis® MX4, Ventis® Pro, Ventis® Pro4, and Ventis® Pro5. Some items — marked ** — are not included in the Ventis® Pro Series, and fit for * items can be confirmed by phone. If you're unsure, send us your monitor's model and serial number.

How often should I replace my Ventis® sensors?

Sensor shelf life depends on the gas and the environment, but most electrochemical Ventis® sensors (H2S, CO, and similar) are rated for roughly 1–3 years of continuous use, and catalytic LEL sensors for about 2–3 years. If your monitor fails a bump test or shows drifting readings, it's time to replace the sensor and recalibrate.

Can I replace these parts myself?

Many items — sensors, batteries, barriers, and case parts — are designed for field replacement. If you'd rather have a professional do it, Apollo Safety's in-house repair shop installs your parts, then calibrates and bump-tests the monitor before it returns to service.

Do dust barrier kits need to be replaced on a schedule?

We recommend replacing dust barrier kits on a scheduled basis — or whenever the barrier shows wear — especially in dusty, high-debris environments, to protect the sensor inlet from particulate damage.

How fast do Ventis® replacement parts orders ship?

In-stock parts ship from our Fall River, MA warehouse. For same-day needs, call sales at 800-813-5408.

Ready to Order Ventis® Replacement Parts?

Call Sales: 800-813-5408 or Technical: 508-673-2544, request a free quote, or contact our team and we'll get your monitor back in service.