Keep classes in session while you fix the problem. Cryo Tech Pipe Freezing offers safe, efficient solutions that isolate pipe sections without draining systems or shutting down schools and colleges, minimizing disruption and cost.
Cryo Tech Pipe Freezing offers a safe and efficient way to isolate a section of pipe for repair. This service is available to K-12 districts, colleges, and universities. The process eliminates the need to drain entire systems or shut down buildings. Using liquid nitrogen and our specialized freeze equipment, we create a solid, temporary ice plug that effectively stops the flow of liquid. This allows your team to safely change valves, add tie-ins, or replace parts. We can safely freeze pipes up to 36 inches in diameter on liquid-filled, no-flow lines—delivering less disruption, lower risk, and tighter control of schedule and cost.
Founded in 2017 by David Anderson, Cryo Tech’s mission is to offer a safe and reliable pipe freezing service at a reasonable cost. Our teams are recognized as leading specialists in the Northeast, serving educational clients nationwide. Expect experienced technicians, clean setups, clear documentation, and steady communication on live campuses.
Educational facilities have unique constraints. Class schedules, student safety, and campus events leave narrow windows for maintenance. Pipe freezing supports those needs.

Isolate only the section you need. Keep lecture halls, labs, dorms, cafeterias, and gyms online.

Avoid draining long risers and hydronic loops. Save water, chemicals, and time spent refilling and purging air.

Plan overnight or weekend freezes, semester breaks, or short outage blocks between daytime activities.

Fewer trades are affected. Less cleanup and faster return to service. Your budget goes further.

Save on labor, chemical treatment, water disposal, and downtime. Fewer trades are affected, and the work area is smaller.
We walk the space with your facilities lead or review drawings. We confirm pipe size, medium, access, hold time, and the repair sequence. We help you select the best outage window.
We align with campus EHS, public safety, and building access rules. For sprinkler work, we coordinate impairment permits and fire watch with your life safety team. For K-12, we follow badging and escort requirements.
You receive a written procedure with freeze points, monitoring plan, communications protocol, and emergency considerations. COI and W-9 are provided on request.
Technicians set engineered freeze heads or jackets, establish no-flow, and protect floors and finishes. We stage mats, containment, and signage to keep students and staff safe.
We introduce liquid nitrogen and build the ice plug. Our team continuously monitors temperatures and conditions. We do not release the line until the plug has the strength needed for your scope.
Your plumber or our partner performs the valve change, tie-in, or component swap. A Cryo Tech technician stays on the freeze point and communicates with your lead throughout.
We thaw the plug in a controlled manner, assist with venting, help verify flow and leaks, and support refill and balancing steps. We leave a clean area and a short closeout note.

We discourage DIY freezing kits in school and university systems. Field conditions vary. Pipe metallurgy, water chemistry, insulation, and line orientation can change plug behavior. Education projects require professional equipment, trained judgment, and redundant monitoring. Our crews read the freeze correctly, manage edge cases, and keep your project on schedule without surprises.
Yes. We use external freeze jackets. Liquid nitrogen never touches the water. The process is clean and non-contaminating.
As long as needed for the planned repair, provided no-flow is maintained, and site conditions match the plan. We monitor throughout and adjust as needed.
No. When performed by trained technicians with the right equipment, pipe freezing is safe for standard piping materials. We assess age, condition, and support before work begins.
Yes, when access and noise limits allow. Most schools prefer evenings, early mornings, weekends, or break periods. We will schedule to match your calendar.
Yes. We regularly freeze sprinkler mains. We coordinate impairment permits, tagging, and fire watch with your life safety team.


Tell us your pipe size, medium, approximate length to isolate, number of freeze points, hold time, and location. Add photos if possible. We will return a clear plan and firm pricing.
Cryo Tech Pipe Freezing
Safe isolation for schools and colleges without shutdowns.
Serving education clients across the United States.