7 Warning Signs Your Water Heater Is Dying
Water heaters don't usually fail out of nowhere. They warn you. Rusty hot water, popping from the tank, a lukewarm third shower, a wet spot under the base. Here are the 7 signs I watch for on every call in Mount Joy, and what each one really means.
Published · By Daniel Reist
Seven signs tell you a water heater is about to go: rusty hot water, popping or rumbling, lukewarm showers, water pooling at the base, age over 10 years, rising gas or electric bills, and pilot light problems. Spot two or more in a Mount Joy tank and it is replacement time, not repair. Here is what each one actually means.
1. Rusty or brown hot water
Run the hot tap in a tub or utility sink. If the water has got an orange or brown tint, and the cold runs clear, the rust is coming from inside your tank. The anode rod is done and the tank lining has started to corrode. On Mount Joy-area well water, anywhere outside the borough municipal lines out toward Rapho Township and Chickies Creek, this shows up by year 4 to 6 instead of 8 to 10. Catch it early and a $250 to $400 anode swap buys you another 3 to 4 years. Catch it late and you are looking at a replacement. Once the tank wall is pitted, it is going to leak.
2. Popping, rumbling, or crackling from the tank
That sound is sediment. Hard water lays mineral scale on the bottom of the tank, the burner (or lower element on an electric) heats through it, and water flashes to steam between the grains. Pop, pop, pop. Rapho Township farmhouses on well water get it loudest. I have heard tanks sound like microwaved popcorn. A drain and flush at $225 to $375 will fix it if you catch it early. If the tank has been popping for 2 years already, the scale is cemented, and the drain valve won't even open. At that point flushing is a waste. Plan a replacement.
3. Lukewarm water or hot that runs out fast
Shower number 2 cold? Hot tap running lukewarm on full? Something is up. On a gas tank, the burner or gas valve is dying. The flame isn't carrying the water to 120 degrees. On an electric tank, it is almost always the lower element. The top one heats the top half of the tank, so you get one hot shower before the water goes cold on refill. A lower element swap runs $225 to $375. If both elements and both thermostats are shot, you are past the point where repair makes sense on a 10+ year tank.
4. Water pooling at the base of the tank
First, check it is not condensation (common in humid Lancaster County summers when the incoming water is 55 degrees and the basement air is 75 degrees and dripping on the cold inlet). Wipe the tank and floor dry, lay down newspaper, come back in 4 hours. If the paper is wet underneath the heater, the tank is cracked. Not fixable. Don't buy the big-box 'water heater sealant' tubes. They are a 48 to 72 hour stall at best. Shut the water and gas (or the breaker), drain it down below the leak, and call. A cracked tank is replacement, full stop.
5. Age over 10 years
Check the serial number sticker on the side. First one or two characters usually code month and year. A Rheem reading 'G09' is July 2009 (older formats vary by brand, look up the chart). Gas and electric tanks are built for 10 to 13 years. Tankless units run 18 to 20. On Mount Joy well water, shave 2 years off the tank number. The hard water chews through anodes fast. If your tank is over 12, every repair call is a judgment call: is the fix worth it, or are you pouring money into a unit that will die by next winter's cold snap?
6. Climbing gas or electric bills
A healthy 40 gallon gas tank costs roughly $20 to $35 per month to run for a family of four in Lancaster County. A 40 gallon electric is closer to $40 to $60 per month at current PPL rates. If your bill jumped 20 to 30 percent and nothing else changed, no new appliance, no new baby taking long baths, the heater is working harder to deliver the same hot water. Sediment, a dying element, or a cracked dip tube are the common causes. A diagnostic call at $75 to $150 pays for itself inside a month if you catch it.
7. Pilot light won't stay lit or burner won't ignite
Standing-pilot gas heaters, common in older Mount Joy basements, usually have a dying thermocouple when the pilot won't hold. $180 to $275 swap and you are done. Newer electronic-ignition heaters with a failed igniter are a different animal. $300 to $500 depending on the control board. If the pilot is fine but the main burner won't light, the gas valve is often the problem, and on a 12+ year tank that is a $450 to $700 part plus labor. That is the point where I usually tell folks to put the money into a new heater instead.
What to do if you spot two or more signs
Shut the thermostat to 120 degrees so the tank is not cycling hard. Put a drip pan under it if there isn't one. Don't ignore a pooling base. Close the cold inlet valve and call. For a single sign on a heater under 10 years, a repair is usually the right move. For two or more signs, or a heater past year 12 on borough water or year 10 on well water, replacement is the honest answer. Mount Joy winters hit hard in January and February. Don't let a dying heater fail during a 22 degree cold snap when every plumber in Lancaster County is booked three days out.
If you are seeing any of these on a tank in Downtown Mount Joy, Florin, Donegal Springs, or anywhere else in 17552, give me a call before it turns into a flooded basement.
