Tankless water heaters, also referred to as instantaneous water heaters, provide water when needed (on demand). Unlike traditional storage tanks water heaters, tankless water heaters use electricity or gas to heat water instantaneously without using a storage tank.

Tankless water heaters are highly efficient and an excellent investment for your home or business because:

  1. They are energy efficient. According to the U.S. Department of Energy, if you’re heating 41 gallons of water, energy efficiency ranges from 24% to 34%. However, the energy efficiency drops from 8% to 14% when you double the amount to 82 gallons.
  2. They save money. The higher the energy efficiency of tankless water heaters, the more you save money. In contrast, storage tanks and water heaters consume high energy and spend a lot of money paying electricity bills.
  3. They save space. Since tankless water heaters don’t have a storage water tank, they save on space, especially if you’re tight on space.

However, your tankless water heater might fail on occasion. When it fails, and you reside in Charleston or the surrounding areas, numerous tankless water heater services are available. Smoak’s Comfort Control will ensure you get a professional tankless water heater repair in Charleston, SC.

Tankless water heaters have some problems and maintenance issues, such as:

  • Mineral Buildup
  • System Overload
  • Air Supply or Exhaust Blockage
  • Ignition Failure
  • Flame Failure

Only experienced plumbers should perform tankless water heater maintenance. Depending on your home, you can maintain your water heater once or twice annually.

What are the Signs that Your Tankless Water Heater Needs Repair?

If you’re not a professional or aware, you might not notice the condition of your tankless water heater. Most of the time, you’ll see when it’s too late. To avoid the inconvenience of having to use cold water or buy another water heater, ensure you’re aware of the signs of a failing tankless water heater.

Here are some of the most common signs that show your tankless water heater needs repairs:

Inconsistent Water Temperature

When you experience frequent changes in water temperature, there’s a high probability the water heater has an issue. The temperature fluctuates even if you have yet to request cold or hot water. For instance, the water might become suddenly hot or ice-cold.

The extreme temperature fluctuation could be due to mineral buildup in the heating lines. When you notice the signs, contact a tankless water heater repair expert.


Tankless water heaters often experience fewer leaks than traditional water heaters, which use storage tanks. However, it would be best if you didn’t suspect that they don’t leak. If you notice water dripping under the unit, don’t ignore it because there might be a broken valve.

A water leak from a tankless water heater can’t stop on its own, and the damage caused includes the accumulation of dangerous mold. The best way to avoid the repercussions is to seek a tankless water heater service to sell the problem early.

Reduced Pressure

When the water pressure reduces, you might think it’s a problem with your water pump. Sometimes, it might be the water pump. But most times, the mineral buildup blocks the heaters line, reducing the pressure of the hot water coming directly from the tankless water heater.

Additionally, an old water heater can also contribute to low pressure. Seek assistance from experts in tankless water heater repair in Charleston, SC.

Strange Noises

If your tankless water heater makes loud noises, it might be due to mineral deposits inside the heater lines. Additionally, the noisy sediments can also cause leaks. To flush out the mineral deposits, look for professionals in tankless water heater repair in Charleston, SC.

Not Enough Hot Water

Another sign that your tankless water heater needs repair is the high frequency of water running out. It happens when you shower or wash dishes where the hot water runs out or turns cold within minutes.

Don’t wait any longer; call an expert in water heater repair to examine and perform repairs.

Water Quality

Water from the faucets should be clear. Your water will change to either rusty or cloudy when there’s sediment buildup. The sediments clogged in the water heater could cause serious health concerns for you and your family.

If you notice a change in your water’s color, get assistance from a qualified plumbing professional to maintain your tankless water heater.

High Energy Bills

Tankless water heaters are energy efficient. They generally save you from high energy costs. However, if you notice that the monthly utility bills are rising steadily, avoid brushing it off as a regular occurrence. Look for an expert to check the water heater and, if possible, repair it.

When you notice such telltale signs, look for a plumber when you need water heater repair services. Please don’t wait until it’s too late while you can get professional Charleston, SC, tankless water heater repair.

Get the Best Tankless Water Heater Repair at Smoak’s Comfort Control

Getting a superior tankless water heater service can be a challenge, especially in South Carolina. Technology has made everything easy and convenient. Occasionally, the water heater will break down due to mineral deposits and other issues.

At Smoak’s Comfort Control, we offer tankless water heater services in Charleston, SC. With over 50 years of serving the Lowcountry, we provide professional and quality services to residential and commercial properties. We ensure that you get the best out of our heating, air conditioning, or plumbing services.

We don’t take the shorter route for quick fixes. We fix the root cause of the issue, which ensures that you don’t have to perform regular repairs due to the same problem. Additionally, we’re open and honest. We provide straightforward pricing, and therefore you should not expect surprises. You will approve any costs before we do any work. We’re committed to giving you a professional and committed budget that doesn’t surprise you.

If you reside in Charleston, Mt. Pleasant, Summerville, or the surrounding areas, please don’t hesitate to contact us today at 843-556-9550 or complete our service request form for tankless water heater repairs in Charleston, SC.