A toilet that runs constantly is usually due to problems with the flush mechanism, a faulty float, or worn gaskets in the water tank. The most common causes include an incorrectly adjusted float, a broken chain, or gaskets that do not seal properly. Many problems can be solved yourself with simple adjustments, while more complicated faults require professional help from a plumber.
What causes the toilet to run constantly?
The most common causes of constant toilet leaks are problems with the float, worn gaskets, or an incorrectly adjusted chain in the water tank. The float may have been damaged or incorrectly positioned, causing water to continue to flow into the tank even when it should be full.
Gaskets around the flush valve wear out over time and lose their sealing ability. When the gaskets no longer seal properly, water leaks continuously from the tank into the toilet bowl. This is especially common in older toilets where the rubber gaskets have become hard and cracked.
The chain between the flush handle and the valve can also cause problems. If the chain is too short or too long, the valve will not close completely, resulting in the water tank leaking constantly. Even a broken or derailed chain can prevent the flush mechanism from working properly.
How can you fix a toilet that runs continuously?
Start by checking the float in the water tank. Adjust the float by bending the metal arm that holds it, so that the float shuts off the water supply when the tank is full. The float should float on the water surface and not stick to the sides of the tank.
Check the chain between the flush handle and the valve. It should be the right length – not too tight, but not too loose either. Adjust the chain so that the valve closes completely when you release the flush handle. If the chain is broken, you can buy a new one at a hardware store.
Check the seals around the flush valve. If they are worn or deformed, they need to be replaced. Turn off the water supply, empty the tank, and lift the valve to access the seals. New seals cost only a few dollars and are easy to replace.
If these simple measures do not help, the problem may lie in the toilet mechanism itself or in internal cracks that require professional repair.
What signs indicate that the toilet problem requires professional help?
If the toilet problem persists after your own repair attempts, you will need to contact a plumber. Recurring leaks despite replacing gaskets and adjusting the float indicate more complex faults that require expertise.
Cracks in the porcelain water tank or toilet bowl are signs that require immediate professional attention. These cracks can cause water leaks that damage floors and underlying structures. Do not attempt to repair porcelain damage yourself.
Water leakage around the base of the toilet indicates that the sealing ring under the toilet may need to be replaced. This requires the entire toilet to be removed, which is a job for an experienced plumber. Water leakage here can cause serious moisture damage to floors and joists.
If the flush does not work at all or if you hear strange noises coming from the pipes when you flush, there may be a blockage or problem with the water pipes that requires professional equipment to resolve.
How much does it cost to repair a toilet that runs constantly?
Simple toilet repairs such as replacing washers and floats usually cost between SEK 200 and SEK 500 in spare parts. If you do the work yourself, this is the only cost. Washers cost around SEK 50–100, while a new float costs SEK 100–200.
Professional service for basic repairs typically costs between SEK 800 and SEK 1,500, including labor and spare parts. The price varies depending on the complexity of the problem and whether special parts or extra labor are required.
More extensive repairs, such as replacing the entire flush mechanism or repairing internal cracks, can cost between $150 and $300. If the toilet needs to be completely replaced, the cost will be between $300 and $800, depending on the toilet model and installation work.
Emergency repairs outside normal working hours usually cost 20–50% more than standard prices. It is therefore worthwhile to fix minor plumbing problems before they develop into emergency situations.
How 24 Center helps with toilet problems
We offer professional assistance with all types of toilet problems, from simple repairs to complex installations. Our qualified plumbers are experts in all aspects of toilet maintenance and can quickly identify and solve the problem.
Our plumbing services for toilet problems include:
- Emergency assistance for constant water leaks and flushing problems
- Repair and replacement of flushing mechanisms and gaskets
- Installation of new toilets and water tanks
- Professional diagnosis of complex toilet problems
- Preventive maintenance to avoid future problems
We are available 24 hours a day, every day of the year, because we understand that water leaks don't wait for convenient times. Call 08 40 24 240 for immediate assistance or book online for scheduled repairs. Our local technicians are familiar with the specific conditions in the area and can quickly provide you with a long-term solution to your toilet problem.
Frequently Asked Questions
How often should I check my toilet's flush mechanism to avoid problems?
It is recommended that you check the flush mechanism every 6 months by lifting the lid of the water tank and inspecting the float, chain, and gaskets. Pay particular attention to signs of wear such as cracked gaskets or rusty parts. A quick monthly check to ensure that the toilet is not leaking can save you from major problems and higher water bills.
What should I do if the toilet starts running in the middle of the night or on weekends?
As an emergency measure, you can shut off the water supply to the toilet using the shut-off valve, which is usually located on the wall behind the toilet. This will temporarily stop the leak. For urgent problems, 24 Center offers a 24-hour service on 08 40 24 240. Document the problem with photos to facilitate diagnosis when help arrives.
Can a constantly running toilet significantly affect my water bill?
Yes, a leaking toilet can dramatically increase water consumption. A toilet that runs constantly can waste 200-800 liters of water per day, which can increase your water bill by $50-200 per month. Even small leaks can cost an extra $10-30 per month, so quick repair is financially justified.
What tools do I need to repair basic toilet problems myself?
For most simple repairs, you only need an adjustable wrench, a small screwdriver, and possibly a small brush for cleaning. Also, keep some old towels handy to wipe up water. Special tools are rarely needed to replace gaskets or adjust the float and chain.
How do I know if the problem is due to a water leak or just a high water level in the tank?
Add a few drops of food coloring to the water tank without flushing. If colored water appears in the toilet bowl within 10-15 minutes without flushing, you have a leak. A high water level is indicated by the float being too high and water overflowing into the overflow pipe. Also check if you hear a constant water noise from the tank.
Is it safe to use chemical cleaning agents when the toilet is leaking?
Avoid strong chemical cleaners when working with the flush mechanism, as they can further damage rubber seals and plastic parts. Instead, use mild detergent and warm water for cleaning. Wait with aggressive cleaning until the leak problem is solved to avoid aggravating the situation.
What happens if I ignore a leaking toilet for a long time?
In addition to increased water costs, prolonged leaks can cause moisture damage to floors, walls, and underlying structures. Constant moisture can lead to mold growth and structural damage that costs tens of thousands of dollars to repair. Limescale deposits can also build up and exacerbate the problem, making future repairs more expensive and complicated.
