Grand Lake Plumbing & Heating recently completed a proactive boiler replacement at a full-time residence in Winter Park, Colorado. The existing boiler was still providing heat and hot water, but after roughly 20 years of service, its age was becoming an increasing concern.
Rather than wait for the system to fail during a Grand County winter, the homeowner chose to replace the boiler and indirect water heater on a planned schedule.
Project Facts
- Location: Winter Park, Colorado
- Project Type: Boiler replacement
- Property: Full-time residence
- Equipment Installed: IBC SL14-115 G3 high-efficiency condensing boiler, rated at 115,000 BTU/hr input and 96% AFUE, and a Bradford White 50-gallon stainless-steel indirect water heater
- Primary Concern: A roughly 20-year-old boiler approaching the end of its realistic service life
- Additional Improvements: New hydronic piping, expansion tank, air separator, condensate pump, glycol solution, outdoor reset controls, magnetic dirt separator, isolation valves, and carbon monoxide and explosive-gas detector
- Result: A modern, high-efficiency hydronic heating system installed and inspected before the old boiler became an emergency
The Challenge
Nothing was broken when the conversation about replacement began. The home’s Buderus GB142-30 boiler was still operating and providing heat and hot water.
The concern was its age.
During a routine system check, a Grand Lake Plumbing & Heating technician identified the approximately 20-year-old boiler as something the homeowner should begin thinking about replacing. A system that is still operating is not necessarily a system that remains dependable.
As heating equipment ages, parts can become more difficult to obtain, efficiency can decline, and the likelihood of an unplanned failure increases. For a homeowner living in Winter Park full-time, a boiler failure can mean losing both heat and hot water with little warning during some of the coldest weather of the year.
Rather than wait to find out how much life remained in the old system, the homeowner decided to replace it proactively.
The original mechanical room with the approximately 20-year-old Buderus boiler and side-arm water heater before replacement.
The Boiler Replacement Solution
The Grand Lake Plumbing & Heating crew, including Danny, Will, and Zachary, completed the boiler replacement over three days, taking the project from full teardown through final commissioning and inspection.
The first day began with shutting off water, gas, and electrical power to the existing equipment. The old boiler venting was disconnected, and the Buderus boiler and side-arm water heater were removed.
The team then installed an IBC SL14-115 G3 high-efficiency condensing boiler and a Bradford White 50-gallon stainless-steel indirect water heater.
The new IBC SL14-115 G3 condensing boiler installed in the existing mechanical room.
Rebuilding the Hydronic Heating System
The installation included new primary and secondary loop piping, a new automatic fill valve, expansion tank, air separator, and related hydronic components.
Near-boiler piping was installed using Type M copper with press fittings to create a clean and serviceable layout. Isolation valves were incorporated so individual components can be serviced without unnecessarily draining the entire heating system.
A magnetic dirt separator and air eliminator were also added to help remove sediment and microbubbles from the hydronic system, protecting the new equipment over time.
A New Indirect Water Heater
The old side-arm water heater was replaced with a Bradford White 50-gallon stainless-steel indirect water heater. The new water heater was installed alongside the boiler with its own expansion tank and isolation valves, allowing it to be serviced independently.
The new Bradford White indirect water heater installed as part of the heating system replacement.
Freeze Protection for Grand County Winters
After the new piping was completed, the system was purged and charged with a fresh 30% glycol solution for freeze protection.
Glycol is particularly important in hydronic heating systems exposed to Grand County’s winter temperatures because it helps protect the piping if conditions ever allow portions of the system to approach freezing.
Outdoor Reset and Boiler Controls
The IBC SL14-115 G3 includes an integrated control platform with outdoor reset. Instead of operating at the same boiler water temperature regardless of conditions outside, the system can adjust heating output based on outdoor temperature and actual heating demand.
The crew also programmed central heating and domestic hot water priority so the indirect water heater draws from the boiler correctly when hot water is needed.
Condensate Management
Because high-efficiency condensing boilers produce acidic condensate during operation, the team installed a dedicated receptacle and condensate pump as part of the new system.
Proper condensate management helps protect the home’s drainage system and reduces the risk of condensate-related problems during cold weather.
An Additional Problem Found During the Project
While removing the existing distribution piping, the team discovered a zone valve with a cracked and corroded fitting caused by a slow, long-term leak.
The fitting was not part of the original boiler replacement scope, but the crew corrected the problem while the system was already being rebuilt rather than leaving a known failure point for a future service call.
Commissioning and Inspection
Once installation was complete, the Grand Lake Plumbing & Heating team performed the final wiring, startup, and commissioning process.
The crew verified system circulation, control operation, glycol concentration, boiler combustion, and communication with each thermostat in the home. The boiler’s combustion settings were tuned to manufacturer specifications before the system was placed into service.
A plug-in carbon monoxide and explosive-gas detector was also added to the mechanical room as an additional safety measure.
The county inspector arrived while the crew was completing commissioning and approved the installation that same day.
The Results
The Winter Park homeowner now has a modern, high-efficiency hydronic heating system in place of equipment that had reached roughly two decades of service.
The new IBC boiler provides 96% AFUE efficiency along with modern controls, outdoor reset capability, and a serviceable stainless-steel heat exchanger. The Bradford White indirect water heater provides domestic hot water through the new boiler system.
Just as important, the replacement was completed on the homeowner’s schedule rather than being forced by a boiler failure during winter.
The new boiler includes manufacturer warranty coverage, and the installation is also backed by Grand Lake Plumbing & Heating’s one-year parts and labor workmanship warranty.
Boiler Replacement in Winter Park and Grand County
Waiting until a boiler stops working is not always the best time to decide what should replace it. For older heating systems in Grand County, a planned evaluation can give homeowners time to understand the condition of their equipment, consider replacement options, and schedule the work before a loss of heat turns the decision into an emergency.
Grand Lake Plumbing & Heating has served Grand County for more than 100 years and provides boiler and heating services throughout Winter Park, Fraser, Granby, Grand Lake, Hot Sulphur Springs, Kremmling, and surrounding communities.
If your boiler is approaching the end of its expected service life, the GLPH team can evaluate the system and help determine whether continued service or proactive replacement makes the most sense.
Call Grand Lake Plumbing & Heating at 970-627-3441 to discuss boiler replacement options for your Winter Park or Grand County home.
Boiler Replacement FAQs
Should I replace a boiler that is still working?
Not every older boiler needs to be replaced immediately, but age, reliability, parts availability, repair history, and the consequences of a winter failure should all be considered. A planned evaluation can help determine whether continued service or proactive replacement is the better option.
How long can a residential boiler last?
Boiler life varies based on equipment design, installation quality, maintenance, water quality, operating conditions, and usage. As a system gets older, routine inspections become increasingly important for identifying wear and potential failure points.
What is outdoor reset on a boiler?
Outdoor reset allows the boiler control to adjust water temperature based on outdoor conditions. When less heat is required, the system can operate at a lower temperature instead of producing the same output regardless of weather conditions.
Why is glycol used in a hydronic heating system?
Glycol provides freeze protection for the water circulating through a hydronic heating system. This can be particularly useful in Grand County, where winter temperatures can put heating pipes at risk if a system shuts down or portions of the property become unusually cold.
What is an indirect water heater?
An indirect water heater uses the home’s boiler as its heat source rather than having a separate burner. Hot boiler water circulates through a heat exchanger inside the storage tank to heat the domestic water.
Does Grand Lake Plumbing & Heating replace boilers in Winter Park?
Yes. Grand Lake Plumbing & Heating provides boiler service, repair, and replacement for homes in Winter Park and throughout Grand County.
