Denver Boiler Repair And Installation

Yes. We repair, replace, and maintain boilers in single family homes and in commercial buildings including apartment buildings, offices, restaurants, and churches. Residential work is usually a single gas boiler feeding radiators, baseboard, or radiant floor. Commercial work often involves larger units or multiple boilers staged in lead lag, planned around occupancy so tenants do not lose heat.

A boiler heats water and circulates it through radiators, baseboard, or radiant floor tubing. A furnace heats air and blows it through ducts. Because a boiler system is piping, pumps, valves, and pressure rather than sheet metal and airflow, boiler work belongs to plumbers rather than duct technicians.

It depends on the age of the unit, what actually failed, whether parts are still available, the efficiency of the existing equipment, the condition of the venting, and whether the distribution system can support a condensing boiler. A failed circulator on an otherwise sound boiler is a repair. A cracked heat exchanger, or repeated failures across consecutive seasons, usually points to replacement. Our plumber inspects the whole system before discussing cost, then gives you both paths in writing.

In many older Denver homes the boiler and the water heater share one chimney sized for both appliances. If the old boiler is replaced with a condensing unit that vents out a side wall, the water heater is left alone on an oversized flue. The exhaust cools, condenses, corrodes the liner, and can spill combustion gases back into the house. The correct fix is relining the chimney or replacing the water heater at the same time.

No. House Bill 23-1161, effective January 1, 2026, applies to new gas fired furnaces and water heaters sold or installed in Colorado. Boilers are exempt from that legislation. Some Denver contractors are citing the NOx law on their boiler pages, which is not accurate. It can still touch a boiler project indirectly: if replacing your boiler means the shared water heater has to be replaced too, that water heater must meet the new standard, which affects equipment choice and lead time.

A combi boiler produces both space heating and domestic hot water from a single appliance, removing the separate water heater entirely. It frees up mechanical room space and can suit smaller homes well, though it has to be sized against peak hot water demand rather than heating load alone.

Six things move the number. The type of boiler, since cast iron, condensing, and combi sit at different levels. The size required, which comes from a heat loss calculation and the altitude derate rather than the rating on the old unit. Whether the near boiler piping has to be rebuilt, which is common on older installations. Whether the venting changes, since a condensing unit vents out a side wall and may orphan the water heater on a shared flue. Whether the electrical needs a dedicated circuit or a service switch added. And whether suspected asbestos on the old pipe insulation requires abatement first. We inspect all six and give you the price in writing before any work begins.

Boiler installations above 200,000 BTU input require permitting and inspection through the State of Colorado in addition to the local mechanical permit. That adds steps and time to a commercial project, so we build it into the schedule from the start. Requirements vary by equipment and jurisdiction, and we confirm specifics with the authority having jurisdiction before work begins.

Yes. Circulator pumps, zone valves, aquastats, thermostats, low voltage control wiring, the dedicated circuit, and the service switch are all in scope. We hold a plumbing contractor registration and an electrical contractor license, so a boiler with a control problem does not turn into two contractors blaming each other.

Pipe insulation in buildings constructed before roughly 1980 may contain asbestos, commonly on the near boiler piping and mains. We do not disturb suspected asbestos containing material. If we find it, we stop, tell you directly, and coordinate with a licensed abatement contractor before continuing.

Yes. Boiler work typically requires a mechanical permit for the appliance and may also require a plumbing permit for the piping, depending on how the local jurisdiction reads the scope. We pull what the job requires, coordinate state inspection where the equipment falls under it, and meet the inspector.

Xcel Energy offers rebates on qualifying high efficiency boilers, and terms change year to year. We check current eligibility for the specific equipment before you commit, so the rebate is part of the decision rather than a surprise afterward. Financing options are also available for qualifying projects, subject to credit approval.