Direct answer
An electric chamber removes routine liquid-nitrogen deliveries, but it still needs an approved power supply, refrigeration layout and somewhere to reject heat. A nitrogen system adds gas supply, storage and model-specific room controls. Neither is always cheaper. The answer comes from two matched models, installed quotes, your expected utilization and the service available where you are.
Decision table
| Field | Electric system | Nitrogen system |
|---|---|---|
| Recurring cooling input | Electricity | Liquid nitrogen plus electricity |
| Geometry is a separate field | Enclosed/head-in and head-out electric designs exist | Open-top/head-out and enclosed nitrogen designs exist |
| Site focus | Power, refrigeration layout, heat rejection | Supply access, storage, ventilation, monitoring and exhaust |
| Cost sensitivity | Utility demand, maintenance and refrigeration service | Delivered gas price, evaporation, tank rental and delivery schedule |
| Capacity evidence | Model-specific | Model-specific |
| Main failure in comparisons | Ignoring contractor and service cost | Using gas price without delivery, rental or losses |
Where each technology fits
Electric suits a site with adequate power, a workable place for refrigeration equipment and a refrigeration technician who can actually reach you. Nitrogen suits a site with dependable gas deliveries, room controls that can be approved, and a workflow built around deliveries and supervised sessions.
Both fail the same way: when the local infrastructure is assumed instead of quoted.
Cooling source and user geometry are separate choices
"Electric" and "nitrogen" describe how the cold is made. Whether the user's head is inside or outside the cold zone is a different question, and every combination exists:
- The CRYO Science lineup includes the nitrogen-cooled, enclosed Arctic alongside its electric systems, so an enclosed chamber is not automatically electric.
- The Vacuactivus Antarctica Electric page, checked October 6, 2026, describes electric cooling with the user's head outside the cold zone.
This matters for costs and operations. Gas consumption from a head-out cryosauna can't be transferred to a gas-cooled heat-exchange chamber. For any candidate, record the cooled body region, breathing environment, capacity, operator requirements and current model documents separately. The technology label alone doesn't tell you staffing, intended use or safety controls.
Set up a fair comparison
Pick one electric and one nitrogen model that can serve the same customer volume and service format. Then hold everything else equal: analysis period, operating days, completed sessions, finance treatment, labor rate and downtime.
Use one workload for both. For example, 10 completed sessions a day over 25 operating days gives 250 sessions a month for each candidate. Dividing one system's daily cost by 20 sessions and the other's by 10 manufactures a technology "advantage" that is really a volume difference.
Draw the same cost boundary. Electric energy should cover the documented system: chamber, mechanical unit, pull-down, runtime, standby and any share of room cooling. Nitrogen should cover model-specific use per session, separate precooling and losses, tank rental, minimum purchases and delivery terms. Note which costs continue in a month with no sessions; at zero sessions, cost per session is undefined.
Count cash once. For a cash purchase, count acquisition and site preparation once, then operating costs. For a financed purchase, count the actual upfront cash, fees, installments and any final payment - not the full purchase price as well. Don't add a bundled item a second time.
Leave out unproven inputs. Capacity and temperature claims stay outside the calculation unless the measurement method is documented, and manufacturer revenue examples are not your demand.
Stress both. Run a lower-demand case and a disruption case: a refrigeration outage for electric, a missed delivery for nitrogen.
Price local supply with the nitrogen inputs and the installed project with the common ownership worksheet.
Compare the same documented operating period
First define one delivered cycle for both configurations. Then enter the same operating days, closed days, paid and unpaid workload, currency and tariff. Operating plus closed days must cover the whole calendar period you select.
Include full-day or overnight energy and closed-day liquid losses. A zero needs a source. Whole-day electricity already includes the measured workload inside its system boundary, so don't add a separate cycle measurement on top of it.
The nitrogen system has its own electricity line in addition to purchased liquid and period fees. Add only costs that are priced separately. Mark labor, space, service, capital and other costs as separate, already included, excluded or unknown; if something is included, name the line it sits in. A subtotal with missing scope can't show which technology is cheaper.
One calendar / Your documented inputs
Compare electric and nitrogen costs on the same workload
Both systems share one set of operating and closed days, paid and unpaid cycles, currency and electricity tariff. Remember that nitrogen equipment uses electricity too. Nothing is prefilled: no model costs, prices or demand.
Formula and comparison limits
Version 1.0.0 / 2026-10-06. Paid period cycles = paid/day x operating days. All period cycles = (paid + unpaid)/day x operating days. Electric utility cost = (operating-day kWh x operating days + closed-day kWh x closed days) x tariff + period electricity charges. Required nitrogen = ((paid + unpaid)/operating day x liters/cycle + other liters/operating day) x operating days + liters/closed day x closed days. Purchased liquid is the greater of required liquid and the stated period minimum. Nitrogen electricity includes its operating and closed days. Nitrogen utility cost = its electricity + purchased liquid x delivered price + other period charges. Selected separate costs add once; explicitly included costs do not add twice. Per-paid-cycle allocation uses all entered costs divided by paid cycles; it is undefined at zero paid cycles and is not a marginal treatment cost. No physical performance equivalence, safe storage, delivery schedule, investment return, inflation, price trend or product ranking is established.
The interactive comparison needs JavaScript. The common-period definitions and formulas remain available for your own worksheet.
Label a multi-year total by what it includes
A five-year view needs delivered equipment cost, site work, finance outflow, completed sessions, local tariff, delivered nitrogen cost, tank fees, scheduled service, repair reserve, labor, downtime and end-of-term value, run at low, base and high utilization. The worksheet above covers one operating period. Replacement, price changes, the financing schedule and end value belong in the business-plan cash worksheet.
Name any total for what it covers. Electricity or gas plus planned maintenance and training can be correct arithmetic and still leave out rent, staff, marketing, finance and downtime. Keep an exclusions column next to it.
Also be careful with ranges. Two category-level low/high figures don't give you a ratio for your site. Compare at the same sessions, days, tariff basis and system boundary, and change those inputs openly in the downside case.
Questions before selection
- Which site work is included in each delivered proposal?
- What local service or gas coverage is available in writing?
- How many completed sessions are realistic during the buyer's staffed hours?
- Which costs continue during a low-volume month?
- What event would stop operation and how quickly can it be resolved?
- What contract obligations remain if the location closes or the equipment is replaced?
Keep a decision record
For each field, note the evidence label, who supplied the figure and when it was checked. The chosen technology should follow from the site's constraints and the scenario results. Write down the option you rejected and why, so a later price or site change can be checked without starting over.
Sources and limitations
Model details keep their recorded evidence dates. A CRYONiQ comparison guide, checked October 1, 2026, separates nitrogen, hybrid and electric formats. Its category-level figures are supplier material, not a substitute for a model manual or local quote, and its energy table mixes kW and kWh labels, so those rows can't be copied into an operating-cost calculation. CRYONiQ: nitrogen, hybrid and electric comparison. Safety controls depend on the model and location; nothing here is an installation design.