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Sizing a boiler for this county starts with understanding what the burner and heat exchanger are actually asked to carry. Homes in Larimer County, CO run heat about ten months a year, from September through June. That kind of continuous cycling accumulates wear on ignition components and the heat exchanger in a way that a loose install or an undersized unit cannot hide. A contractor working a quote here has to establish the full seasonal load before settling on output capacity, because a boiler that runs short on capacity spends its cycles struggling, and the heat exchanger carries that strain directly.

Ductwork and electrical service installed for an older heating system are not automatically wrong for a new boiler, but a contractor has to measure both before anything else gets priced. Half the homes in Larimer County, Colorado were built in 1993 or earlier (2020-2024 ACS 5-year). That vintage of construction often has distribution runs and panel capacity that were designed around whatever was typical at the time, and a boiler swap that ignores those realities produces a system that runs short of what the house needs. What a contractor finds behind the walls decides the scope of the job more than the unit being replaced.
What Gets Installed With a New Boiler

The boiler itself sits in a mechanical room, basement, or utility closet and is the unit that heats the water. From there, a network of pipes runs through the house, carrying that heated water to radiators, baseboard units, or radiant floor loops in each room.
An expansion tank mounts near the boiler and absorbs pressure as the water heats and expands. The circulator pump, also close to the boiler, moves water through the loop, and a zone valve or thermostat wiring ties each area of the house back to a control point.
The drawing shows a typical layout, and a licensed contractor determines exactly which components and configurations apply to this house.
Get matched in Larimer CountyLarimer County by the numbers
359 severe weather events were recorded in Larimer County, Colorado between 2015 and 2024.
NOAA National Centers for Environmental Information, Storm Events Database, bulk CSV export, events 2015-01-01 through 2024-12-31.Half the homes in Larimer County, Colorado were built in 1993 or earlier (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesLarimer County, Colorado holds 164,690 housing units (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesOwners occupy 64.0% of the occupied homes in Larimer County, Colorado (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesSevere Weather Events in Larimer County
Larimer County's climate puts real demands on heating equipment, and those demands are shaped by local conditions more than any general rule. A boiler sized and installed for this area's weather patterns will hold up differently than one that was not.
359 severe weather events, 2015–2024. Source: NOAA National Centers for Environmental Information, Storm Events Database.
