How long does a boiler last?

A well-maintained boiler typically lasts 15 to 30 years, depending on its design and how consistently it has been serviced. Cast iron boilers often outlast newer high-efficiency models, which have more complex components. Annual maintenance, stable water pressure, and prompt repair of leaks all help extend boiler life.

What are the signs my boiler needs repair?

Common signs that a boiler needs repair include cold or unevenly heated radiators, banging or gurgling noises, water leaking around the boiler, pressure readings that rise or fall sharply, and a burner that will not stay lit. Rising heating bills without a change in usage can also point to a problem. A boiler that leaks or repeatedly shuts off should be checked promptly to prevent water damage and loss of heat.

What pressure should my boiler run at?

Most residential hot water boilers operate at about 12 to 15 psi when cold and roughly 20 to 25 psi when hot. The pressure relief valve on most residential boilers opens at 30 psi to protect the system. If pressure regularly climbs toward that level or drops near zero, the cause may be a failing expansion tank, a faulty fill valve, or a leak, and the boiler should be inspected.

Why are some of my radiators cold?

Radiators that stay cold while others heat usually have trapped air, a closed or stuck valve, or a zone that is not calling for heat. Bleeding air from hot water radiators often restores heat, but if the problem returns, the cause may be a failing circulator pump, a faulty zone valve, or low system pressure. A technician can test each zone to find the source.

Should I repair or replace my old boiler?

Replacing a boiler is usually the better choice when it is more than 20 years old, has a leaking heat exchanger, or needs repeated repairs. A new high-efficiency condensing boiler can use significantly less fuel than an older unit. When a boiler is younger and the problem is a single part, such as a circulator pump or expansion tank, repair is often the more economical option.

Same-Day Boiler Repair and Replacement in East Metro

Expert care for boiler and radiator heating systems, priced by the job

Aire Serv of East Metro diagnoses and repairs boilers from all major brands and replaces them when repair no longer makes sense. Same-day service and emergency help are available when your radiators go cold.

Same-day service available
Upfront pricing by the job, not the hour
Emergency service available
Calls answered 24/7
Financing for replacements

Expert care for boiler and radiator heating systems, priced by the job

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Commercial

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Boiler Service Built Around Your Comfort

Quick response and clear pricing for East Metro homes heated by boilers.

When a boiler stops working on a subzero night, waiting until morning can mean frozen pipes and a cold house. Aire Serv of East Metro provides emergency service, and calls are answered 24/7 by our call center, with a live person available at any hour. After-hours and weekend visits are reserved for emergencies like a no-heat situation, and your technician explains the price before any work begins. Calling at the first sign of trouble, such as a sudden pressure drop or a burner that will not stay lit, can keep a minor fault from becoming a no-heat emergency.
Same-day service is available for boiler repairs during our regular 7 a.m. to 5 p.m. hours. Many homes in the East Metro, especially older properties, rely on boilers that have been in place for decades, and our technicians service all major brands rather than limiting you to one manufacturer. That means one call covers an older cast iron boiler, a newer high-efficiency model, and the radiators connected to either one.
Every boiler repair is priced by the job, so you know the cost before work begins and are never billed by the hour. If your boiler is near the end of its life, we provide a free in-home replacement estimate, and financing is available to help manage the cost of a new system. Seeing repair and replacement prices side by side helps you make a confident decision about an aging boiler. Financing can also help you move to a high-efficiency condensing boiler that uses less fuel than an older unit.

What Our Technicians Check During Boiler Service

When your Aire Serv of East Metro technician arrives, they start by checking the thermostat and the boiler control panel for error codes. They inspect system pressure and the pressure relief valve, then check the expansion tank, a common cause of pressure swings and relief valve leaks when it fails. Next, they test the circulator pump, zone valves, and aquastat to confirm hot water moves through every zone. The burner, ignition system, flame sensor, and venting are inspected for safe combustion, and the technician looks for leaks around fittings, valves, and the heat exchanger. They also test the low-water cutoff and high-limit control, safety devices that shut the burner down before the boiler can overheat or run dry. If radiators heat unevenly, they bleed trapped air from the system. Once the problem is identified, you get a job price for the repair before work starts, and the technician confirms your East Metro home is heating properly before leaving.

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What Our Technicians Check During Boiler Service

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From tune-ups and maintenance to heater repair and air conditioning replacement, we provide services that keep the air you breathe clean and keep your home or business at the perfect temperature.

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Aire Serv of East Metro

Aire Serv of East Metro repairs and replaces boilers in Lake Elmo, Woodbury, Oak Park Heights, Inver Grove Heights, and the surrounding East Metro area. Boiler and radiator heat remains common in established neighborhoods east and south of St. Paul, and our technicians work on both long-serving systems and modern high-efficiency boilers. Contact us to schedule boiler service at your home.

HVAC Services in East Metro and Surrounding Areas

Aire Serv of East Metro repairs and replaces boilers, radiators, furnaces, and heat pumps, and installs ductless mini-splits. Homes with boiler heat often lack ductwork for central air, so a ductless system is a practical way to add cooling without major renovation. We also provide seasonal boiler tune-ups and carbon monoxide detector installation to keep hydronic heating systems running safely.

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Boiler Repair and Replacement FAQs

Boilers heat many East Metro homes reliably for decades, but they can develop problems that are difficult to diagnose without training. These answers cover common warning signs, normal operating pressure, typical boiler lifespan, and when replacement becomes the better choice. Aire Serv of East Metro can inspect your system and price any repair by the job before work begins.

Common signs that a boiler needs repair include cold or unevenly heated radiators, banging or gurgling noises, water leaking around the boiler, pressure readings that rise or fall sharply, and a burner that will not stay lit. Rising heating bills without a change in usage can also point to a problem. A boiler that leaks or repeatedly shuts off should be checked promptly to prevent water damage and loss of heat.
Most residential hot water boilers operate at about 12 to 15 psi when cold and roughly 20 to 25 psi when hot. The pressure relief valve on most residential boilers opens at 30 psi to protect the system. If pressure regularly climbs toward that level or drops near zero, the cause may be a failing expansion tank, a faulty fill valve, or a leak, and the boiler should be inspected.
Radiators that stay cold while others heat usually have trapped air, a closed or stuck valve, or a zone that is not calling for heat. Bleeding air from hot water radiators often restores heat, but if the problem returns, the cause may be a failing circulator pump, a faulty zone valve, or low system pressure. A technician can test each zone to find the source.
A well-maintained boiler typically lasts 15 to 30 years, depending on its design and how consistently it has been serviced. Cast iron boilers often outlast newer high-efficiency models, which have more complex components. Annual maintenance, stable water pressure, and prompt repair of leaks all help extend boiler life.
Replacing a boiler is usually the better choice when it is more than 20 years old, has a leaking heat exchanger, or needs repeated repairs. A new high-efficiency condensing boiler can use significantly less fuel than an older unit. When a boiler is younger and the problem is a single part, such as a circulator pump or expansion tank, repair is often the more economical option.

Residential
Commercial