About Critical Environment Supply
Critical Environment Supply is an authorized distributor of HVAC and building automation controls, serving contractors, facility teams, and engineers who need the right part on time. We carry a deep in-stock catalog of pressure transducers, room monitors, thermostats, and controls hardware from the manufacturers you already trust — and we've built our ordering process to be as straightforward as the parts themselves.
Whether you're specifying a single sensor for a critical environment or sourcing parts for a full retrofit, our goal is the same: make it easy to find what you need, get a fair price, and get it shipped without the runaround.
In-Stock Inventory
Thousands of controls, sensors, and HVAC parts kept in stock and ready to ship — no waiting on backorders for the parts you need most.
Trusted Brands
We're an authorized distributor for the manufacturers your projects already call for, so what you order is exactly what shows up on the job.
Simple Ordering
Search by part number, name, or vendor, build your order, and check out securely online — no account or phone call required.
Real Support
Questions about a part or an order? A real person is a phone call or email away, not a support ticket queue.
Get in touch
Have a question about a part, an order, or becoming a customer? We're happy to help.