Yes, Done repairs boilers — both hot-water (hydronic) boilers and steam boilers used in older Denver-area homes. Boiler systems are common in Colorado homes built before the 1980s, and they require a technician who understands how they differ from forced-air furnace systems. Done’s heating team is experienced with boiler diagnostics, repairs, and maintenance so you don’t have to track down a specialist.

Common Boiler Problems Done Repairs

Boilers are generally reliable, but they have their own set of failure points that differ from furnaces. The most common issues Done sees in Front Range homes include:

  • No heat or inadequate heat: Often traced to thermostat issues, a failed circulator pump, or problems with the boiler’s ignition or burner assembly
  • Pressure problems: Low pressure causes the system to shut down; high pressure can trigger the pressure relief valve. Both point to specific components that need inspection
  • Leaking: Corrosion, failed seals, or pressure relief valve discharge can cause water to appear around the boiler or in the system piping
  • Banging or kettling noises: Mineral scale buildup on heat exchanger surfaces (a real issue with Colorado’s hard water) causes localized boiling and kettling sounds
  • Cold zones: Air trapped in the system or a failed zone valve can leave one part of the house cold while the rest heats normally

How Colorado’s Hard Water Affects Boilers

The Denver metro’s water supply is notably hard — high in calcium and magnesium minerals that deposit as scale inside the boiler’s heat exchanger over time. This scale acts as an insulating layer between the burner flame and the water, forcing the system to run hotter and longer to deliver the same amount of heat. Left untreated, scale buildup shortens the heat exchanger’s lifespan significantly.

Done checks for scale buildup during boiler service calls and can recommend descaling treatments or system flush procedures when mineral accumulation is affecting performance. A water treatment solution upstream of the boiler can also slow future buildup.

Boiler Repair vs. Replacement

Modern boilers — particularly high-efficiency condensing boilers — are significantly more efficient than units from the 1980s and 1990s. When a repair cost approaches a substantial fraction of replacement cost, or when a boiler is experiencing repeated failures, replacement often makes more financial sense over the long run. Done will give you an honest assessment of whether a repair is the right call or whether investing in a new system is the smarter move.

That said, many boiler repairs are straightforward and cost-effective. A failed circulator pump, a faulty zone valve, a broken thermocouple, or a failing expansion tank are all components that can be replaced without touching the boiler vessel itself — often at a fraction of replacement cost.

What to Expect During a Boiler Service Call

Done’s technicians arrive with diagnostic equipment and common repair parts to minimize return trips. We’ll check system pressure, inspect the heat exchanger for signs of cracking or corrosion, test the circulator pump and zone valves, evaluate the expansion tank, and review the burner and ignition assembly. You’ll receive a clear explanation of what we found and what it will cost to fix before any repair work begins.

Boiler Maintenance Keeps Repairs Minimal

Annual boiler maintenance — ideally performed in early fall before heating season — catches small problems before they become expensive repairs. Done’s Care Club membership includes priority scheduling for maintenance visits, which is especially valuable when a cold snap hits and every heating contractor in the metro is suddenly booked out. Consistent maintenance also keeps your boiler running at peak efficiency, which matters when natural gas prices climb during a Colorado winter.

If your boiler isn’t heating reliably, visit our boiler repair page for more detail, or head to emergency heating repair if you’re without heat right now. Done serves the Denver metro and Front Range — contact us to schedule a same-day service call.