Montclair homeowners usually replace a water heater when the tank leaks, the hot water turns rusty, or an old unit in an older house keeps failing. Permits come from the City of Montclair Community Development Building Department. Call the number on this page to be connected with a local plumber in Montclair.

Signs the water heater has run its course
- A leak at the base of the tank or a rust-stained floor
- Discolored or metallic-smelling hot water
- Rumbling or knocking when the heater fires
- Hot water that runs out quickly
- Soot, scorch marks or a flickering flame at the burner
- Corroded connections on the cold and hot lines
What's different about Montclair
Montclair was built out from former citrus orchards after World War II, and city-stats.com puts the median year built at 1969. Homes that age often have water heaters in hall closets or tucked into tight garage corners, with older venting, galvanized connections or no seismic straps. The City itself advises having older homes checked for problems such as pipe corrosion or lead from old pipes, and a replacement is a natural time to have the piping at the heater looked at. If the plumber finds corroded nipples, valves or supply lines, replacing them while the heater is out costs far less than a separate visit later.
Water and sewer are separate agencies here. Monte Vista Water District supplies water and handles water quality and main water line questions at (909) 624-0035. The City of Montclair runs the sewer. If your main shutoff won't close on replacement day, MVWD is the call.
The City of Montclair Building Department can be reached at (909) 625-9477, with inspection requests at (909) 625-9448. The plumber usually pulls the permit and schedules the inspection.
SoCalGas is the gas utility. If you smell gas near the heater, leave the house, then call 911 and SoCalGas at 1-800-427-2200 from outside.
What affects the price
- Heater type and capacity
- Vent, flue and gas connector replacement in older installs
- Replacing corroded fittings and valves at the heater
- Straps, expansion tank and drain pan
- Permit, inspection and disposal
When you call
You'll be connected with an independent plumber who works in Montclair. Tell them the heater's age, size and fuel, where it sits and whether it's leaking. Ask that the quote spell out the permit, code updates and haul-away so you can compare offers fairly. If the heater lives in an interior closet, ask whether moving it to the garage is worth considering while the old unit is out.
Water Heater Replacement questions in Montclair
What can make a replacement harder in an older home?
Does replacing a water heater here require a permit, and who issues it?
Who is the gas utility, and what should I do if I smell gas near the heater?
What size water heater should I get?
More plumbing services in Montclair
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