At 6,500 to 8,000 feet, boilers need combustion analysis to confirm proper high-altitude gas derate. We measure CO, O2 and stack temperature on every unit serving radiant floors or snowmelt driveways in Old Town and Deer Valley. Igniters, flame sensors and venting are inspected because cold starts after heavy snow can fail when air in the lines or scale on the heat exchanger restricts flow. Low-water cutoffs and pressure relief valves are tested under actual operating pressure to catch leaks before they freeze.
Circulator pumps and zone valves are cycled while we listen for cavitation and check amp draw. Expansion tanks are drained and recharged so pressure swings stay within limits during the long heating season. Condensate neutralizers are refilled on high-efficiency models because acidic water from the Wasatch Back quickly eats copper fittings in condos at Kimball Junction and Jeremy Ranch. We also pull error codes and verify aquastat settings against the outdoor reset curve used on these mountain properties.
Glycol concentration is measured with a refractometer because systems with snowmelt loops lose freeze protection over time. Heat exchanger passages are scoped for scaling common in Summit County water. Any air pockets in the lines are purged at the highest points typical of multi-level homes in Prospector Square and Canyons Village. The entire sequence is performed before temperatures drop so the boiler starts reliably when the first big storm hits.
Technician insight
In Park City the thing that catches most people out with boiler tune-up is the glycol in snowmelt loops at homes above 7,000 feet. Homeowners forget the loops lose protection after a couple seasons and the first hard freeze cracks the tubing under the driveway. We always test concentration on every Old Town and Deer Valley property because the long heating season makes it non-negotiable.
Old Town Snowmelt Loop Freeze Protection
A homeowner in Old Town called after the boiler would not maintain pressure. We found glycol at 18 percent and air trapped in the snowmelt zone. After refilling to 35 percent and purging the lines the system held pressure through the next storm.
Boiler Tune-Up Services We Offer
✓Combustion Analysis and Adjustment
We perform full combustion testing and high-altitude derate adjustment so the boiler burns cleanly through Park City winters.
✓Glycol Testing and Refill
Glycol levels are checked and topped off to protect radiant floors and snowmelt lines from freeze damage at elevation.
✓Circulator Pump and Zone Valve Service
Pumps are tested for flow and noise while zone valves are exercised to prevent stuck positions during cold snaps.
✓Expansion Tank and Pressure Relief Valve Check
Tanks are drained and recharged and relief valves are tested under load to maintain stable system pressure.
✓Venting and Condensate Neutralizer Service
Venting is inspected for blockages and neutralizer media is replaced to protect piping on high-efficiency units.
How it works
- 1
System Evaluation
We review error codes, operating pressures and glycol condition while noting any snowmelt or radiant zones in the home.
- 2
Component Testing
Igniter, flame sensor, circulator pumps and zone valves are checked for function and wear under load.
- 3
Combustion And Safety Checks
Combustion analysis, venting inspection and low-water cutoff testing are performed at actual elevation settings.
- 4
System Purge And Documentation
Air is removed from the lines, neutralizer is serviced and findings are recorded for the homeowner.
Quotes
Cost depends on the diagnosis and parts needed.