Radiator Repair & Balancing

The Heart of Your Heating System

Radiators are the final link between your boiler and the air in your rooms. When a radiator underperforms, the problem often isn't the radiator itself—it's the balance of the system.

In a multi-story or multi-room radiator system, water naturally wants to take the path of least resistance. If not actively managed, water rushes to the near radiators and starves the far ones. That's why balancing—carefully restricting flow to the closest radiators so far radiators get their fair share—is fundamental to even heating.

What We Do

Room-by-Room Pressure Balancing

We measure the water pressure and temperature entering each radiator. Using a combination of balancing valve adjustment and hydronic calculations, we redistribute flow so each room reaches its design temperature at the thermostat setpoint. Rooms that have been cold now warm up; rooms that have been overheated can be dialed back.

Trap & Airbleed Diagnosis

For steam systems, we test the thermostatic trap in each radiator. A failing trap can be the culprit behind an entire room's cold radiator. We replace failing traps and verify airbleed function. For hot-water systems, we check airbleeds and manual vents.

Thermostatic Valve Repair

Some older radiators have integral thermostatic valves. If they're sticking or unresponsive, we repair or replace them so you can turn radiators on and off independently.

Cast-Iron Restoration

If your radiators are original cast iron, we offer cleaning and light restoration. We don't repaint unless you request it—original patina can be preserved and celebrated.

Thermometer Tape Installation

We install low-temperature thermometer tape on radiator supply and return lines in each room. This gives you and us a quick visual check of whether each radiator is receiving the right water temperature.

Documentation

We create a system diagram showing which radiators you have, their position in the circuit, their balancing settings, and their operating temperature. This becomes part of your building's permanent record.

Common Radiator Problems

Cold spots in the room: Usually air in the radiator or a failing trap. Easily fixed.

Whole room stays cold while neighbors' rooms are hot: Pressure imbalance upstream. Balancing valves solve this.

Radiator clanks or bangs: Often a steam-system issue—water hammer. We investigate the cause and adjust pressure or trap settings.

Radiator leaks at seams: Cast-iron radiators can sometimes be resealed, but often replacement is more cost-effective than repair.

Schedule Your Radiator Service

Contact us with your building layout, radiator count, and any specific complaints. We'll estimate the scope and availability.