Boiler Repair & Installation in Englewood, CO

A lot of older Englewood homes heat with a boiler, not a furnace

Hydronic heat, hot water circulated through radiators or baseboard, is common in Englewood's prewar and early postwar homes. It is comfortable, quiet heat, but the systems are often decades old, and when one quits in a Front Range cold snap the house cools fast and the pipes it does not heat are suddenly at risk of freezing. That combination, an aging boiler and a hard freeze, is why no-heat calls spike here in January.

Most no-heat problems are not the boiler itself but a part around it: a failed circulator pump, a waterlogged expansion tank, a stuck zone valve, a bad thermocouple or igniter, or low system pressure. We diagnose the actual fault instead of condemning the whole unit, because an inexpensive part often brings a working boiler back to life.

Repair, or replace

A sound cast-iron boiler can run a long time with normal part replacement. The case for replacement is a cracked heat exchanger, chronic leaks, or efficiency so low the fuel bill pays for a new unit over a reasonable horizon. We will tell you which situation you are in honestly, and we will not push a replacement when a repair is the right call.

No heat and the temperature dropping? That is a same-day call in winter.

CALL A PLUMBER(720) 698-9956

Common boiler faults we see in Englewood

No heat: failed circulator, stuck zone valve, or ignition fault
Banging or knocking: air in the loop or a waterlogged expansion tank
Leaking: a failed relief valve, pump seal, or corroded fitting
Short cycling: low water, a bad aquastat, or scale on the exchanger
Pressure dropping: a leak somewhere in the loop that needs finding

Why a dead boiler is also a burst-pipe risk

When a boiler fails in a cold snap, the house is not the only thing that cools. Supply lines in exterior walls and unheated spaces lose their margin against freezing, so a heating call in January can quickly become a plumbing emergency. If a line has already split, that is our burst pipe repair, and getting heat restored fast is the best prevention. For homes moving off a boiler for domestic hot water, we can also sort out a proper water heater installation.

If a leak in the loop keeps dropping your system pressure, finding it is its own task, and the same tracing approach as our leak detection service applies to a heating line.

Getting ahead of a winter no-heat call

The worst time to discover a boiler problem is the first hard freeze, when the house cools fast and unheated pipes lose their margin against bursting. A pre-season check catches the common culprits before they strand you: a circulator pump showing its age, an expansion tank that has waterlogged, low system pressure from a slow leak, or an ignition part on its way out. Addressing those in the fall is a scheduled repair; discovering them at the coldest point of winter is an emergency with frozen pipes on top. If your boiler is the older hydronic system common in Englewood's prewar homes, a look before the season is cheap insurance against a very cold night.

Questions we hear about boiler repair & installation

My radiators are cold but the boiler is running. Why?

Usually the water is not circulating: a failed circulator pump, a stuck zone valve, or air trapped in the loop. The boiler makes heat but nothing moves it to the rooms. It is a common, repairable fault, not automatically a new boiler.

Is it worth repairing an old boiler or should I replace it?

A sound boiler with a bad part is worth repairing. Replacement makes sense when the heat exchanger is cracked, it leaks chronically, or its efficiency is low enough that a new unit pays for itself in fuel over a reasonable time. We will tell you which you have.

Why does my boiler keep losing pressure?

Falling system pressure means water is leaving the loop somewhere, through a relief valve, a pump seal, or a corroded fitting or line. It needs to be found and fixed rather than just topped up, because the leak will keep getting worse.

Can a boiler failure cause frozen pipes?

Yes. When the heat goes out in a Front Range cold snap, the house cools and pipes in exterior walls and unheated spaces lose their protection. Restoring heat quickly is part of preventing a freeze, which is why we treat winter no-heat calls as urgent.