Boiler Leaking Water: Hot-Water or Steam Service
If you smell gas or a CO alarm sounds, leave the home and call the gas utility or 911 from outside.
A boiler leaking water needs an independent heating contractor to identify the leak and the boiler type. Keep clear of hot water and leave pressurized components closed. ECO Series 2 gas hydronic controls and SGO Series 3 oil steam components use different service information; report the model and visible leak location.
Talk to a contractor about your boiler leaking water
Call (877) 565-3062One call reaches a contractor registered for your ZIP; ask the fee and the arrival window.
HVAC Responder Editorial Team · Reviewed 2026-11-01 · Facts quoted from manufacturer documentation
Identify the system before describing the leak
For an ECO hot-water boiler, preserve the fault display and note where water is visible. For an SGO oil steam boiler, identify the gauge-glass area separately from burner or pipe observations. Do not open a hot system or add water to diagnose the symptom.
According to Weil-McLain ECO Series 2 boiler manual:
Check for low water condition in system.
The document “Weil-McLain SGO Series 3 oil steam boiler manual, PDF” uses the wording gauge glass
.
Discuss your boiler leaking water with a contractor
Call (877) 565-3062One call reaches a contractor registered for your ZIP; ask the fee and the arrival window.
What to tell the contractor
State fuel, hot water versus steam, full model and series, visible leak location and any low-water or lockout message.
Related repair and diagnostic guides
What happens when you call about your boiler leaking water
- Your call routes to an independent local contractor registered for your ZIP code.
- Ask the fee and the arrival window.
- The decision to hire stays with you.
One call reaches a contractor registered for your ZIP; ask the fee and the arrival window.
Sources and review date
- Weil-McLain ECO Series 2 boiler manual, PDF · Captured source reviewed 2026-11-01
- Weil-McLain SGO Series 3 oil steam boiler manual, PDF · Captured source reviewed 2026-11-01