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7 Common Causes of No Hot Water
7 Common Causes of No Hot Water
4.8 RATING

7 Common Causes of No Hot Water

Having no hot water can be a nightmare for homeowners; if not at least very frustrating. The common culprits behind this problem can range from…

July 12, 2026
7 Common Causes of No Hot Water

Having no hot water can be a nightmare for homeowners; if not at least very frustrating. The common culprits behind this problem can range from minor issues such as a faulty thermostat to more serious problems like improper water heater installation.

No Hot Water? Contact Mr. Rooter Plumbing

Contact Mr. Rooter Plumbing today for professional water heater repair services. With our qualified plumbers, cutting-edge tools, and commitment to quality workmanship, you can rest assured that we’ll restore your water heater to good working condition.

Our Customers Reviews

Chahib Chakrome

Summit, NJ

The service provided was great, nothing to say about the work of the plumber. 5 stars to him. But the company charges felt way too much for the work. We would have liked to have the same plumber take care of other things in the house, but every time he check how much extra the company will charge for the job, the price just got too much. The plumber did an amazing job he selected a beautiful faucet to replace our old one. He did his best. But the company prices have no room for negotiation.

Tiffany DeSande

Plainfield, NJ

A million stars!!!! Steve and Lucas were absolutely amazing. My parents pipes burst and within 4 hours of calling they came and fixed everything!!! Very nice guys and dealt with my panicking. I will always use them if needed in the future and you all should too!!! Thank god for people like this!!! Thank you so much guys!!!

Naomi Langer-Seltzer

New Brunswick, NJ

We got very quick service, I think the plumber actually arrived in less than an hour! After reviewing what was happening, he gave us our options and performed the option we selected. This happened in the late afternoon or early evening. It was already dark and there was a lot of snow on the ground.

Steve Smith

Mountainside, NJ

I needed immediate, same day service in the early evening at my home. I went to the internet and looked up plumbing services that offered "24-hour, 7-day a week" availability. The first 3 places I called said that they could not get to me until the following day. Then I called Mr. Rooter. They were courteous and promptly got a technician to my house within an hour and a half. The technician, Lucas Kaufmann, was exceptional. The job was not easy, but he figured the problem out and got me all fixed up within an hour's time. Moving forward, I…

Stephanie Brown

Cranford, NJ

Despite what was quite obviously a busy day (day after Thanksgiving at 10pm) TJ came out and did not leave until the job was done! There were several setbacks, which at the late hour might have prompted him to leave- but he chose to stay and continue until the job was complete! I only have one bathroom so I was really hoping he could make it work, and he really did a wonderful job! So thankful for all of his help! I highly recommend TJ!

Shaheen Dhanani

Union, NJ

This is my second time using Mr. Rooter and I have to say they are an excellent company of experienced professionals! The service techs were courteous, experienced and actually spent time trying to figure out the issue before proposing the solution. They were also patient and answered all my questions without rushing the work. I will be using them again.

Christie Murphy

Montgomery, NJ

TJ was amazing! 10/10 recommend this company. We were in an emergency state of panic with a burst pipe in the middle of a bad snowstorm. TJ came with knowledge, professionalism, kindness, and found the root of the problem within five minutes of being here. We will be using him again in the spring to fix an outdoor issue he found!

Alan Abraham

Clark, NJ

The technicians were friendly, professional and knowledgeable. The price was too high I believe, but the technicians had no control over that. The technicians took their time and did a great job. I would use them again and also recommend them.

Amy Swart

Berkeley Heights, NJ

Excellent service! Charles and Nicholas of Mr. Rooter arrived to my scheduled service a few minutes early, wore sanitary shoe coverings, and were extremely professional. They found the source of my leak quickly and fixed the issue. While they here, I requested an additional hydraulic heating inspection which they accommodated. They were very knowledgeable and provided helpful tips. I highly recommend this team and I will definitely call them for all future plumbing needs!!

JACKY Coppola

Wall Township, NJ

TJ came to my aid as the water pipe froze in my house. Although nothing could be done he gave me hints of what could be done my me which was very helpful. I found TJ very professional and caring about my situation. The best part of the very long night was the dogs adored him one wanted to accompany him to his next job. Thank you for employing such an amazing man. Plus today there is water running in the house. Thank you TJ and thank you Mr. Rooney plumbing for employing a man with helpful hints!!!!!

Mr. Rooter Plumbing is a top-rated plumbing company providing reliable and affordable water heater services backed by a 100% satisfaction guarantee. If your hot water heater is not working, don’t panic. Give us a call for water heater repair and get back to enjoying the hot showers you deserve.

  • Faulty or Damaged Heating Element

The heart of your electric water heater, the heating element, can bu out over time. This is a common culprit for no hot water. When the element fails, it can no longer convert electricity into heat, leaving you with cold showers. Our plumbers recommend you stay on top of regular water heater maintenance to extend the lifespan of the heating element.

  • Gas Valve Failure

If your gas-powered water heater has stopped working, evaluate the gas supply tube for leaks. You’ll know you have a gas leak if you notice a rotten egg smell in your house that doesn’t go away. Next, check the gas inlet valve to see if it’s secure and in the correct position. If everything seems secure, it’s advisable to call a licensed plumbing service to perform a professional inspection.

  • Pilot Light Is Out

For older gas water heaters, a consistent pilot light is essential. The pilot light ignites the buer when the water heater is tued on. If it goes out, the water heater won't produce hot water. Thankfully, relighting a pilot light is a simple process: open the access panel and tu the gas valve to the “Pilot” position. Call a nearby plumbing repair service if you’re confused about how to relight the pilot light.

  • Improper Installation

Is your hot water heater not working after a plumber has completed the installation? It’s likely that something went wrong during the installation process. It could be due to incorrect wiring or the water heater is undersized. It’s never a good idea to troubleshoot wiring issues yourself unless you’re a skilled plumber. Call a professional water heater service provider to perform troubleshooting and offer solutions.

  • Thermostat Malfunction

Your water heater thermostat needs to be in good condition and set correctly to provide adequate hot water. If the thermostat is damaged or wo out due to age, consider replacing it. While you’re at it, check the high-temperature cutoff switch to see if it has been triggered. Fixing the cutoff switch is as simple as pressing the reset button.

  • Tripped Circuit Breaker

If the water heater's circuit breaker trips, it will cut off power to the unit, resulting in no hot water. Check your electrical panel for any tripped breakers or blown fuses.

  • Undersized Water Heater

A water heater that's too small for your household's demand might not be able to produce enough hot water. If you keep running out of hot water quickly or it takes a long time for your water heater to provide hot water again, it may be time to assess your hot water needs and consider upgrading to a larger water heater to ensure an adequate supply of hot water for your household. You may want to install a tankless water heater to enjoy a continuous supply of hot water. It’s a good idea to consult with a licensed plumbing service for professional recommendations.

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