The Chronomite SR Series is the brand\'s premium commercial electric tankless water heater lineup — engineered for high-flow commercial applications including restaurants, healthcare facilities, schools, and industrial handwash stations where reliable instant hot water at significant flow rates is required.
SR Series differentiators
- Higher flow capacity: SR Series supports up to 5.5 GPM at moderate temperature rise — significantly more than standard Chronomite commercial models
- Heavier-duty construction: commercial-grade housing, robust internal components, larger heating element configurations
- Higher amperage capability: 60-100 amp models for sustained high-flow operation
- Industry-leading capacity in commercial POU: dominates the high-flow commercial electric tankless niche
Typical SR Series applications
- Commercial kitchen handwash stations with multiple sinks
- Hospital nurse stations and patient room handwash arrays
- School cafeteria sanitation and handwash facilities
- Industrial facility employee locker rooms
- Cruise ship and marine commercial handwash applications
- Food service facilities requiring large simultaneous handwash capacity
SR Series sizing tiers
The series spans capacities from 2.0 GPM up to 5.5 GPM at typical commercial temperature rise (often 65°F-75°F rise from inlet to outlet). Larger models support multi-fixture simultaneous use that smaller Chronomite commercial heaters cannot.
Electrical requirements (substantial)
SR Series at 5.5 GPM requires substantial electrical service:
- 3-phase 208V or 480V service typical
- 40-100 amp dedicated circuits
- Proper grounding and lockout/tagout provisions
- Disconnect within sight of unit
- Most installations require licensed electrical contractor with commercial expertise
SR Series vs LavAdvantage (Eemax competitor)
Eemax LavAdvantage targets similar commercial POU lavatory applications. SR Series advantages:
- Higher flow capacity per unit
- Heavier-duty for sustained commercial operation
- Industry reputation in commercial food service
LavAdvantage advantages:
- Lower entry cost for low-flow applications
- Rheem-backed service network broader in some markets
- Better retail availability for some configurations
Commercial code compliance
SR Series installations must meet commercial plumbing and electrical codes:
- ASSE 1070 anti-scald tempering (where required for handwash compliance)
- NSF certifications for food service applications
- UL/ETL listings for commercial electrical compliance
- Local jurisdiction commercial water heater permitting
SR Series carries all major commercial compliance certifications. Verify your specific application requirements against the model\'s certifications.
Maintenance schedule (commercial)
Commercial operation demands more frequent maintenance than residential:
- Monthly: inlet screen inspection and cleaning (commercial use accumulates debris faster)
- Quarterly: visual inspection, electrical connection verification
- Semi-annual: heat exchanger inspection, descaling in hard-water areas
- Annual: full service including element inspection, thermistor calibration verification, electrical load testing
Most commercial installations contract with a service company for quarterly maintenance — cost is justified by avoided downtime during business operation.
Lifespan in commercial service
SR Series in proper commercial service typically achieves 12-18 year lifespans. Heavy-use facilities (large restaurants, high-traffic schools) may see closer to 10-14 years. Element replacement is the most common service event at year 5-8 in commercial duty.
Warranty
Chronomite SR Series carries commercial-tier warranty terms — typically 3-year heat exchanger, 1-year parts, with extended options available for high-priority commercial installations. Verify specific terms for your model and application.
Service network
Chronomite maintains an authorized commercial service technician network. Most major metro areas have at least one authorized service provider. For mission-critical commercial installations, establishing a service relationship before failures occur ensures faster response when issues arise.
Total cost of ownership consideration
SR Series commands premium pricing reflecting commercial-grade build and certifications. Total cost of ownership in heavy commercial service typically pencils out favorably vs lower-tier alternatives:
- Lower lifecycle failure rates reduce business-interruption costs
- Robust construction handles commercial duty cycles that residential-grade units cannot
- Better warranty support for commercial accounts
- Sustained capacity at peak demand avoids tank-based backup heating costs