Shut off and contain leaks
Close the cold water supply to a leaking heater and contain water. Turn off gas or power to the unit if it is safe.
Commercial property losing hot water or leaking at the water heater?
Restaurants, hotels, healthcare and multifamily buildings depend on hot water for sanitation and tenants. A leaking or failed commercial heater needs prompt service. Call 833-877-1717. RepairNowUSA connects the request. An independent provider does the work.
Am I in the right place?Yes for no hot water, leaks, relief valve discharge, or error codes on commercial water heaters and boilers.
Is this urgent?Urgent when sanitation, tenants or patients depend on it. Gas smell: leave and call the utility or 911.
What do I do next?Close the cold supply if leaking, turn off power or gas if safe, and call 833-877-1717.
Residential heater: water heater repair.
RepairNowUSA editorial review · Last substantively reviewed October 14, 2026 · Review standards
What to do now
Stay away from a discharging relief valve
Water from the relief valve is hot and under pressure. Keep people clear and call.
Gas smell or CO alarm: leave
Evacuate and call the gas utility or 911 from outside.
Scalding, pressure and gas
Commercial heaters run hot and under pressure. Keep away from a discharging relief valve. Gas smell or CO alarm: leave and call 911 or the gas utility.
Common situations
No hot water
Ignition, gas valve, element or control failures stop heating. Restaurants and healthcare may need to stop some operations.
Leaking tank
A leaking tank usually means replacement. Fittings and valves can sometimes be repaired.
Relief valve discharging
Too much pressure or temperature trips the relief valve. It needs diagnosis, not plugging.
Not enough hot water
Undersized or failing units, sediment or failed elements can leave the building short of hot water.
What to have ready when you call
- Property ZIP code and business type
- Type of heater: tank, tankless or boiler-fed, and gas or electric
- What happens: no hot water, leak, relief valve discharge or not enough hot water
- Brand, size and age if known
- Operating impact
- Who can authorize work and any vendor requirements, such as a COI
How commercial water heater repair usually works
- Make it safe. Water, gas or power is shut off as needed.
- Diagnose. Ignition, controls, elements, valves and the tank are checked.
- Repair or replace. Failed parts are replaced. Leaking tanks are usually replaced.
- Temporary hot water. For longer replacements, some providers can arrange temporary units.
Large water heaters may need permits and, in some places, inspections. Buildings with water management plans, such as healthcare facilities, should tell the provider about any temperature requirements.
What happens when you call RepairNowUSA
- Describe what is happening in plain words and give the property ZIP code. You do not need to know which trade to ask for.
- RepairNowUSA checks for a participating independent provider who handles commercial water heater repair in that area.
- If one is available, you are connected. The provider confirms timing, access, scope and price with you before any work.
- The provider, not RepairNowUSA, diagnoses and performs the repair.
RepairNowUSA is a referral and connection service. Provider availability and response times vary by location, time and demand, and are not guaranteed. Before you approve work, ask what was found, the price, the timing and what is not included.
Call 833-877-1717Commercial property losing hot water or leaking at the water heater questions
Can a restaurant operate without hot water?
Generally not. Health codes require hot water for handwashing and dishwashing. Check with your local health department.
Can a leaking commercial water heater be repaired?
Leaks from fittings or valves may be repairable. A leaking tank usually means replacement.
How long does commercial water heater replacement take?
It depends on size, venting and parts availability. Common sizes may be replaced the same day; others need ordering.
Is a dripping relief valve dangerous?
It means pressure or temperature may be too high, or the valve is failing. Have it checked promptly.
Can I call at night or on a weekend?
Yes. You can call 833-877-1717 at any time, including nights, weekends and holidays. Whether an independent provider can come out right away depends on your ZIP code, the time and provider capacity, so availability is not guaranteed.
Authoritative references
These public sources give general safety context. They do not replace an on-site evaluation, and RepairNowUSA does not perform the work.