3 services · Baltimore
Water heaters in Baltimore, MD
Most tank water heaters last about 8 to 12 years. A plumber can often repair a heater that stops making hot water, but a tank that leaks from the bottom has failed and needs to be replaced. Tankless heaters last longer but cost more to install, especially if the gas line or venting has to change.
- Licensed local plumbers
- The problem explained before work starts
- Price agreed before the job begins
Water heaters services in Baltimore
Water heater repair
UrgentIf a gas water heater has no hot water, the pilot, thermocouple or gas valve is the usual cause; on an electric heater it's usually an element or thermostat. Those parts are repairable. A tank that leaks from the bottom can't be repaired and needs to be replaced.
Water heater replacement
A leaking tank or a heater past about 10 years old is usually replaced rather than repaired. A proper install includes a permit, correct venting (adjusted for altitude where needed), an expansion tank where required, a drip leg on the gas line and a relief valve discharge pipe.
Tankless water heaters
A tankless water heater heats water as it flows, so it doesn't run out, but it needs a larger gas line, its own venting and a unit rated for your elevation. Installed correctly and descaled regularly, it can outlast a tank heater.
Local conditions
Water heaters in Baltimore: what's different
Rowhouse basements often hold the water heater next to the laundry and an old floor drain. When a tank fails, water heads straight for the drain, and if the drain is slow, the basement floods.
Replacement is a good time to check venting, add a pan and confirm the floor drain works.
Many rowhouse heaters share a chimney with the furnace, so venting has to be checked at replacement. Permits come from Baltimore City's permitting office, and adding a pan and testing the floor drain protects the basement.
- Water and sewer in Baltimore
- The City of Baltimore Department of Public Works provides water and sewer service to the city and much of the region.
- Permits in Baltimore
- Plumbing permits are issued by Baltimore City's permitting office within Housing and Community Development.
Baltimore housing and plumbing
Rowhouses from the 1800s and early 1900s dominate, often with basements, cast-iron drains and galvanized supply.
Other Baltimore conditions that affect plumbing
- Rowhouse plumbing: Old cast iron and galvanized pipe in rowhouses leak and clog.
- Frozen pipes: Cold snaps freeze pipes in rear additions and exterior walls.
- Basement backups: Heavy rain can back up old sewers into basements.
- Rowhouse renovations: Many rowhouses have been renovated over decades, mixing old cast iron and galvanized pipe with newer PEX and PVC.
Neighborhoods and ZIP codes
Plumbers on Thawline cover Baltimore and City of Baltimore, including Canton, Fells Point, Hampden, Federal Hill, Roland Park, Mount Vernon. ZIP codes: 21201 · 21202 · 21203 · 21205 · 21206 · 21209.
When to call a plumber in Baltimore
- No hot water, or hot water that runs out much faster than it used to
- Water pooling around the base of the tank
- Rumbling or popping from the tank
- Rusty or smelly hot water
- A pilot that won't stay lit or a tankless unit showing an error code
- A heater more than 10 years old before it fails
How these problems start and how to choose between repair options is covered in the water heaters guide.
Water heaters questions in Baltimore
Where is the water heater in most Baltimore rowhouses?
How long does a water heater replacement take?
More plumbing in Baltimore
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