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Project Spotlights, Residential Plumbing Guidance
High-Efficiency Boiler Replacement
December 18, 2025
Contact Optimal Plumbing today at (414) 387-2332 to schedule a consultation or learn more about our boiler replacement services.
Recent Job by Optimal Plumbing: Boiler Replacement
When an aging boiler begins to lose efficiency or reliability, replacing it with a modern, high-performance system can make a significant difference in comfort, safety, and energy savings. Recently, Optimal Plumbing completed a full boiler replacement project that showcases our detailed process, technical expertise, and commitment to doing the job right the first time.
Project Overview
For this project, our goal was to safely remove an existing boiler and install a new high-efficiency MODCON ELX-800FBN boiler, seamlessly integrating it with the building’s existing infrastructure. Every step was planned to ensure safe operation, code compliance, and long-term reliability.
Safe Decommissioning & Removal
Safety always comes first. Our team carefully locked out and tagged out all electrical and fuel sources before beginning work. The existing boiler was isolated from the hydronic heating system, fully drained, and disconnected from all associated components, including gas piping, water lines, electrical connections, controls, and venting. Once disconnected, the old unit was removed from the site for proper disposal.
Installation of the New High-Efficiency Boiler
The new MODCON ELX-800FBN boiler was set and secured in the location of the previous unit. Our plumbers reconnected all critical systems, including:
Natural gas piping, modified as needed for a secure and safe fit
Supply and return water piping aligned to the new boiler’s specifications
Venting and air intake adjusted to meet manufacturer requirements and local codes
Electrical supply and controls integrated with the existing system
Every connection was completed with precision to ensure safe and efficient operation.
System Commissioning & Testing
Once installed, the hydronic system was refilled, purged of air, and thoroughly checked for leaks. We then performed a complete system startup following manufacturer specifications, testing all safety controls and performance metrics to confirm the boiler was operating efficiently and correctly.
Clean Jobsite & Responsible Disposal
Throughout the project, we maintained a clean and organized work area. All debris and materials were removed, and the old boiler was disposed of in an environmentally responsible manner—leaving the site clean and orderly upon completion.
Permits & Warranty
Optimal Plumbing handled all required municipal and state permits for this boiler replacement. The new MODCON ELX-800FBN boiler is backed by a one-year parts and labor warranty, providing added peace of mind for the property owner.
Why Choose Optimal Plumbing?
Fully licensed, bonded, and insured
Honest, upfront pricing
Convenient scheduling and text updates
Clean, professional work from start to finish
We treat your home like our own—cleaning up after ourselves and ensuring everything works perfectly before we leave.
Need a Boiler Replacement?
Whether you’re dealing with an outdated boiler, rising energy costs, or system reliability concerns, Optimal Plumbing is here to help. Our licensed, insured, and experienced team manages every step—from permits to final testing—so you can trust the job is done correctly and up to code.
Contact Optimal Plumbing today to schedule a consultation or learn more about our boiler replacement services.
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At Optimal Plumbing, we combine expertise, efficiency, and cutting-edge technology to provide unparalleled plumbing solutions for both commercial and residential clients.
- Serving the Milwaukee Area
- contact@optimalplumbingwi.com
- 414-387-2332