Location: Mountain Home, ID
Industry: Medical
Project Duration: 3 weeks
Rental Term: 1 month
The Challenge
A mechanical contractor performing a steam boiler replacement at a medical center required a temporary solution to maintain hot water for hydronic heating during the project.
With the existing boiler system scheduled to be taken offline, the facility needed:
- Continuous hot water supply during construction
- A reliable temporary system capable of running 24/7
- Minimal disruption to ongoing medical operations
- A fast, coordinated installation aligned with the contractor’s schedule
The project required careful planning to ensure a seamless transition from the existing system to the temporary solution without impacting the facility.
The 1Source Solution
After a site walk with the contractor, 1Source Rentals engineered a temporary heating solution consisting of:
- (1) 1,800,000 BTU HydroHeat Pro
- (1) 25kVA Generator
- (1) 500-Gallon Diesel Fuel Cell
This configuration provided a fully self-contained system capable of maintaining consistent hot water supply throughout the duration of the boiler replacement.
Installation Strategy & Execution
Pre-Installation (Day Prior to Startup)
The team mobilized equipment to the site and prepared the system for activation:
- Positioned and leveled all equipment to ensure proper operation
- Connected generator power to the HydroHeat Pro unit
- Installed fuel lines between the heater and diesel fuel cell
- Ran (1) 2” supply hose and (1) 2” return hose to the mechanical room
- Suspended hoses overhead to keep pathways clear for contractor access



Startup & System Integration
On the day of startup, coordination with the mechanical contractor was critical:
- Powered on the unit and primed fuel lines
- Test-fired burners and preheated glycol prior to system switchover
- Contractor isolated and drained the existing system
- Hose manifolds were installed in the mechanical room
- Final water connections were completed and hoses were filled and bled of air
Once the building system was ready:
- Facility pumps were activated to establish flow through the heat exchanger
- The HydroHeat Pro was set to the required temperature setpoint
- Burners were engaged to maintain consistent output
- System performance was monitored, including temperature and pressure readings


The Results
- Successful installation with approximately 20 total labor hours across two technicians
- Continuous 24/7 operation maintained for the full 3-week rental period
- Seamless transition with little to no disruption to the medical center
- Reliable hot water supply maintained throughout the boiler replacement
The Impact
Temporary heating in critical environments requires more than just equipment — it requires coordination, timing, and reliability.
Through detailed planning and close collaboration with the mechanical contractor, 1Source Rentals delivered a solution that ensured uninterrupted heating performance during a critical infrastructure upgrade.
When downtime isn’t an option, temporary systems play a vital role in keeping essential facilities operational.
