A Guide to Water Heater Repair and When Replacement May Be Necessary Instead

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Monday, June 30, 2025 at 11:00am UTC

Plumbers in Denville, NJ, share signs that water heater repair is needed and when replacement is necessary.

Rockaway, United States - June 30, 2025 / PHD Mechanical Inc /

Important Basics to Know About Water Heater Repair and Common Problems

Are homeowners frustrated by an unreliable water heater? If homeowners notice signs of problems with their water heater, it’s important to call professionals to inspect it and determine the best solution, whether it’s water heater repair or replacement. This guide to water heater repair and common water heater issues will share the signs indicating when repair is needed, common problems with a water heater, and when replacement may be a better option than repair.

Signs Indicating Water Heater Repair Is Needed

shower head Many signs can signal an issue with the water heater. Recognizing these indicators early and calling for repair can help prevent the problem from worsening and becoming more costly. Common signs of water heater issues that can indicate the water heater may need repair include:

  • Insufficient hot water production or a complete lack of hot water
  • Strange sounds from the water heater
  • Unusually high utility bills
  • The pilot light frequently goes out
  • A leaking water heater
  • Discolored hot water
  • Hot water with a strange smell or taste

Common Water Heater Issues

water heater While various issues can occur with water heaters, some are more common than others, and many of these common issues can be caused by multiple things going wrong. Therefore, it’s crucial to have the water heater inspected by professionals so they can identify the underlying problem and fix it.

For example, water temperature problems can stem from several different underlying issues that will require different solutions. A malfunctioning thermostat can disrupt the water heater's ability to maintain consistent water temperatures, while a broken heating element in an electric water heater can also lead to inconsistent water temperatures or a lack of hot water entirely. Sediment buildup in the hot water tank can also cause water temperature issues, as well as unusual noises, discolored water, higher operating costs, and more.

Pilot light issues can be a common issue with a gas water heater. A pilot light can frequently go out due to problems, such as a faulty thermocouple that fails to detect the flame properly or a broken pilot assembly. Water heater repairs should be left to professionals due to the complexity of the systems, so that they are done correctly, and because of the potential for serious damage if not handled correctly.

When Is Replacement Needed Rather Than Repair?

While many water heater issues can be resolved with repairs, there are instances when water heater replacement may be necessary or a better option. If a water heater is corroded, it is a clear indication that replacement is necessary, as corrosion weakens the tank, making it more susceptible to leaks and damage.

Age can be a determining factor in whether repair or replacement is needed, with most conventional tank units lasting 8-12 years. Water heaters also lose efficiency as they age, resulting in higher operating costs. So, when a water heater is nearing the end of its life expectancy and is not operating efficiently, replacement may make more sense financially than repairing it.

Frequent repairs and service calls also create a compelling case for replacement over repeated fixes. When water heaters need repair too often, those repair costs can add up. Therefore, it may be more cost-effective to replace the water heater with a new, more efficient and reliable one, rather than continuing to pay for repairs.

About PHD Mechanical Inc

PHD Mechanical Inc has over three decades of experience serving Denville and the surrounding areas. They offer convenient scheduling, great value, and a beneficial membership program. Call them for water heater repair and replacement services in Denville, NJ.

Contact Information:

PHD Mechanical Inc

90 US-46
Rockaway, NJ 07866
United States

Peter Crampton
(973) 706-6210
https://phdmechanicalnj.com/