Tankless Water Heaters

Expert Tankless Water Heater Repair Services by Loyalty Plumbing

Tankless water heaters, also known as on-demand or instantaneous water heaters, are innovative appliances that provide hot water only when it’s needed. Unlike traditional water heaters, which store and continuously heat a large amount of water in a tank, tankless water heaters heat water directly as it flows through the unit, eliminating the need for a storage tank.


  • Energy Efficiency: Tankless water heaters are more energy-efficient than traditional tank water heaters because they only heat water when it’s needed, reducing standby energy loss. This can result in significant energy savings over time.
  • Space-Saving Design: Tankless water heaters are compact and wall-mounted, saving valuable space in homes and businesses compared to bulky traditional water heater tanks.
  • Unlimited Hot Water: With a tankless water heater, there’s no risk of running out of hot water, as they provide a continuous supply of hot water on demand.
  • Longer Lifespan: Tankless water heaters typically have a longer lifespan than traditional tank water heaters, lasting up to 20 years with proper maintenance. This longevity can result in cost savings over time.


Tankless water heaters are suitable for various residential and commercial applications, including:

  • Homes: Tankless water heaters are ideal for single-family homes, apartments, and condominiums, providing hot water for showers, baths, sinks, and appliances.
  • Commercial Buildings: Tankless water heaters are used in restaurants, hotels, offices, and other commercial establishments to provide hot water for restrooms, kitchens, and laundry facilities.
  • Industrial Settings: Tankless water heaters are also used in industrial settings for processes that require hot water, such as manufacturing, food processing, and chemical processing.

With their energy efficiency, space-saving design, and versatile applications, tankless water heaters offer a reliable and efficient solution for meeting hot water needs in various settings.

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Most frequent questions and answers

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Warranty coverage varies depending on the manufacturer and model but commonly includes warranties ranging from 5 to 15 years for parts and heat exchangers.

Installation costs for tankless water heaters vary based on factors such as the unit’s size, fuel type, venting requirements, and labor rates. On average, installation costs can range from $1,000 to $3,000.

Tankless water heaters heat water on demand, providing nearly instant hot water when a hot water tap is opened. However, there may be a brief delay as the unit heats the water to the desired temperature.

Yes, tankless water heaters are energy-efficient because they only heat water when needed, reducing standby heat loss associated with traditional storage tank models.

Installation of a tankless water heater typically requires professional expertise due to electrical or gas connections, venting requirements, and plumbing modifications. It is recommended to hire a licensed plumber or HVAC technician for installation.

Types of Tankless Water Heaters

Gas Tankless Water Heaters:

  • Efficiency: Gas-powered tankless water heaters typically have higher efficiency ratings compared to electric models. They heat water more quickly and are often preferred for larger households or high-demand applications.
  • Cost: While gas tankless water heaters may have a higher upfront cost and installation expenses due to venting requirements, they tend to have lower operating costs over time, especially in areas with lower natural gas prices.
  • Installation Requirements: Gas tankless water heaters require proper venting for combustion gases, which may involve installing a dedicated flue or using a power venting system. Professional installation by a licensed plumber or HVAC technician is recommended.

Electric Tankless Water Heaters:

  • Efficiency: Electric tankless water heaters are generally less efficient than gas models but may still offer energy savings compared to traditional storage tank water heaters. They are suitable for smaller households or applications with lower hot water demand.
  • Cost: Electric tankless water heaters typically have a lower upfront cost and simpler installation compared to gas models. However, they may have higher operating costs in regions with expensive electricity rates.
  • Installation Requirements: Electric tankless water heaters require sufficient electrical capacity and may need upgrades to the home’s electrical system to accommodate higher power demands. They do not require venting, making them more versatile in terms of installation locations.

Whole-House Tankless Water Heaters

  • Functionality: Whole-house tankless water heaters are designed to provide hot water to the entire property, delivering a continuous supply of hot water to multiple fixtures simultaneously.
  • Installation: Whole-house units are typically installed centrally and require larger heating capacities to meet the hot water demands of the entire household.
  • Benefits: They offer convenience and flexibility by supplying hot water to all fixtures, including showers, sinks, and appliances, without the need for a storage tank.

Point-of-Use Tankless Water Heaters:

  • Functionality: Point-of-use tankless water heaters are installed near specific fixtures, such as sinks or showers, to provide hot water on demand at the point of use.
  • Installation: Point-of-use units are smaller and more compact, making them ideal for installations in tight spaces or areas with limited hot water demand.
  • Benefits: They eliminate the need for long wait times for hot water to reach the fixture and can be a cost-effective solution for supplementing hot water in remote areas of the home.

Installation and Maintenance:

Installation Process:

  • Location Selection: Choose an appropriate location for installation based on venting requirements, access to utilities, and proximity to fixtures.
  • Venting Requirements: Ensure proper venting for gas tankless water heaters to exhaust combustion gases safely outdoors. Electric models do not require venting but may still need access to electrical power.
  • Plumbing Connections: Connect the tankless water heater to the home’s plumbing system using appropriate piping and fittings. Follow manufacturer instructions and local building codes for installation.

Maintenance Tips:

  • Periodic Flushing: Regularly flush the tankless water heater to remove mineral deposits and debris that can accumulate inside the unit and affect performance.
  • Descaling: Perform descaling procedures as recommended by the manufacturer to remove limescale buildup from the heat exchanger and maintain efficient operation.
  • Filter Cleaning: Clean or replace inlet water filters as needed to prevent clogging and ensure proper water flow to the tankless water heater.

Energy Efficiency and Cost Savings:

Energy Savings:

  • Tankless water heaters offer energy savings by heating water only when needed, eliminating standby heat loss associated with traditional storage tank water heaters.
  • By operating on-demand, tankless water heaters consume less energy and can result in lower utility bills over time.

Return on Investment (ROI):

  • While tankless water heaters may have a higher initial cost compared to traditional storage tank models, they offer long-term cost savings through reduced energy consumption and lower operating expenses.
  • Calculate the potential ROI of upgrading to a tankless water heater based on energy savings, utility rates, and the lifespan of the unit to determine the overall cost-effectiveness of the investment.

Troubleshooting Guide:

Incase you run into one of this issues. This guide will help you
  • Check for scale buildup or mineral deposits in the heat exchanger and flush the system if necessary.
  • Verify that the unit is sized appropriately for the household’s hot water demands and adjust temperature settings as needed.
  • Refer to the manufacturer’s manual for specific error code meanings and troubleshooting steps.
  • Check for gas or electrical supply issues, venting obstructions, or sensor malfunctions that may trigger error codes.
  • Follow the manufacturer’s recommended maintenance schedule for periodic flushing, descaling, and filter cleaning.
  • Address any leaks, drips, or unusual noises promptly to prevent further damage to the unit.
  • Ensure proper sizing and capacity of the tankless water heater to meet peak hot water demands.
  • Check for flow restrictions or plumbing issues that may affect water flow and temperature consistency.
  • If you suspect a gas leak, immediately turn off the gas supply to the unit and contact a qualified technician for inspection and repairs.
  • Regularly inspect gas connections and fittings for signs of leaks, such as hissing sounds or the smell of natural gas.
  • Ensure proper venting and clearance requirements are met to prevent condensation buildup or venting obstructions.
  • Inspect vent pipes for blockages, corrosion, or damage, and clear any debris or obstructions as needed.