The age-old hassle of running out of hot water or waiting for it to warm up is becoming a thing of the past, thanks to tankless water heaters. This modern solution offers a more efficient way to handle your home's hot water needs. But what happens when your tankless water heater isn't performing as it should? That's where water heater repair services come in. Whether you're experiencing issues with temperature consistency, water pressure, or other problems, our team of experts is here to help. Our Ultimate Tankless Water Heater Buying Guide is here to help you understand the benefits of going tankless, the different types available, and how to choose the right one for your home.

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Tankless Water Heater Buying Guide Plano

Transitioning from a conventional water heater to a tankless model is like swapping your old flip phone for a smartphone. It's a leap towards better technology, more convenience, and energy savings. Tankless water heaters are compact, highly efficient, and provide a continuous supply of hot water. However, to enjoy these benefits, it's essential to choose a tankless water heater that suits your home's requirements and your lifestyle.

Whether you're tired of the limitations of your current water heater or building a new home and exploring your water heating options, this guide will provide the information you need to make an informed decision. So, let's dive into the world of tankless water heaters and discover how they can enhance your home's efficiency and comfort.

Benefits of Tankless Water Heaters

The shift towards tankless water heaters is largely driven by the myriad benefits they offer over traditional models. Here are some of the compelling advantages:

Energy Efficiency:

Tankless water heaters are stars when it comes to energy efficiency. Unlike traditional models that continuously heat water in a tank, tankless models heat water on demand, significantly reducing energy consumption. This efficient operation can lead to lower energy bills, making a positive impact on your wallet and the environment.

Space Saving:

Say goodbye to bulky water tanks! Tankless water heaters are compact and can be mounted on a wall, freeing up valuable floor space in your home. Whether you live in a spacious home or a cozy apartment, reclaiming space is always a good idea.

Instant Hot Water:

One of the hallmark benefits of tankless water heaters is the provision of instant hot water. No more waiting for the water to warm up before you can start your shower or wash the dishes. The moment you turn on the tap, hot water flows out, providing unmatched convenience.


Investing in a tankless water heater is playing the long game. These units are built to last, often offering a lifespan of 20 years or more, which is nearly double the lifespan of traditional tank water heaters. Over time, this longevity can offset the initial higher cost of a tankless unit, making it a smart choice for the long term.

These benefits make tankless water heaters an appealing choice for homeowners seeking to upgrade their water heating systems. The promise of lower energy bills, more space, instant hot water, and a long-lasting appliance make the shift to tankless water heaters a thoughtful move towards a more efficient and comfortable home.

Fuel Types for Tankless Water Heaters

Choosing the right fuel type for your tankless water heater is a critical decision that will affect its performance, efficiency, and cost of operation. The right fuel type for you depends on your local utility costs, the setup of your home, and your hot water needs. Let's delve into the three primary fuel types to help you make an informed decision.


Electric tankless water heaters are gaining popularity due to their efficiency and ease of installation. Let's explore the details:

Aspect Description
Overview Electric tankless water heaters use electrical resistance to heat water on demand. They require an adequate electrical supply which might necessitate an upgrade to your home's electrical system.
Pros High energy efficiency, lower upfront costs, easy installation, and minimal maintenance.
Cons May require electrical upgrades, is not as powerful as gas models, and could be affected by power outages.


Gas-powered tankless water heaters are known for their high heating capacity. Here's a closer look:

Aspect Description
Overview Gas tankless water heaters employ natural gas or propane to heat water, ensuring a high heating capacity that can cater to larger households.
Pros High heating capacity, suitable for large households, and operational during power outages.
Cons Higher upfront costs require venting installations and are less energy efficient compared to electric models.


Propane tankless water heaters are a viable option for areas without natural gas service. Here's what you need to know:

Aspect Description
Overview Similar to gas models, propane tankless water heaters use propane gas to heat water. They are a good choice for locations without natural gas service.
Pros High heating capacity, operational during power outages, and a viable option for rural or remote areas
Cons Requires propane storage and delivery, higher upfront costs, and venting installations are necessary

Types of Tankless Water Heaters

Understanding the variety of tankless water heaters available is crucial to making an informed decision that will satisfy your home's hot water needs for years to come. Each type of tankless water heater serves a unique purpose and comes with its own set of advantages. Let's delve into the distinct types and explore their benefits and considerations.

Whole-house Tankless Water Heaters:

Whole-house tankless water heaters are engineered to supply hot water to multiple fixtures simultaneously. They are a suitable choice for larger households where the demand for hot water is higher. With a robust heating capacity, these units ensure that every member of your family can enjoy a warm shower, even if the dishwasher and washing machine are running at the same time. Their ability to handle high demand makes them a popular choice among homeowners with larger families.

However, the installation of whole-house tankless water heaters can be more complex and might require a professional's touch to ensure optimal performance. Moreover, the upfront cost can be higher compared to other types, but the long-term energy savings and the convenience of having a continuous hot water supply often justify the investment.

Point-of-use Tankless Water Heaters:

Point-of-use tankless water heaters are designed to serve a single or a couple of fixtures. They are compact, easy to install, and can be placed closer to the point of use, reducing the wait time for hot water. These units are ideal for supplementing the hot water supply in distant bathrooms or kitchens, ensuring that hot water is available quickly whenever it's needed.

The ease of installation and the lower upfront cost make point-of-use tankless water heaters an attractive option for homeowners looking to address hot water needs in specific areas of their homes without overhauling their entire water heating system.

Condensing Tankless Water Heaters:

Condensing tankless water heaters showcase a high level of efficiency by utilizing the heat from exhaust gases to preheat the incoming cold water. This process significantly reduces the amount of energy required to heat the water to the desired temperature, translating to lower energy bills.

Although highly efficient, condensing tankless water heaters require a proper venting system to dispose of the condensed exhaust gases. The installation can be more complex, and the initial cost might be higher, but the energy savings over time can make this type a worthwhile investment.

Recirculation Water Heaters:

Recirculation water heaters feature a loop that circulates hot water, ensuring instant availability and reducing water wastage. This type is a boon for homeowners who are environmentally conscious and looking to minimize water wastage. The recirculation system keeps hot water ready at the tap, eliminating the wait and saving precious time, especially during busy mornings.

The installation of recirculation water heaters can be more complex, and they may come with a higher price tag. However, the convenience of instant hot water and the water-saving aspect often outweigh the initial investment, making them a thoughtful choice for modern homes.

Key Considerations Before Purchasing

Investing in a tankless water heater is a significant decision that impacts your daily comfort and long-term energy expenses. It's essential to weigh various factors to ensure you select a unit that aligns with your household's hot water demands and your lifestyle. Here are the key considerations you should ponder:

Determining Your Hot Water Needs:

Understanding your hot water needs is foundational in selecting a suitable tankless water heater. This entails evaluating the number of fixtures and appliances in your home that will require hot water. The two primary metrics to consider are Gallons Per Minute (GPM) and Temperature Rise.

  • Gallons Per Minute (GPM): The flow rate of water, measured in gallons per minute (GPM), is a crucial factor. Assess the number of fixtures and appliances that will use hot water simultaneously to estimate the required GPM. This will ensure that the unit can handle the demand, especially during peak usage times.
  • Temperature Rise: Temperature rise refers to the increase in water temperature from its initial cold state to the desired hot temperature. Different regions have varying incoming water temperatures, and a higher temperature rise requires more heating power. Understanding the temperature rise necessary for your locale helps in selecting a unit with adequate heating capacity.

How Often Will The Water Heater Be Used:

The frequency of hot water usage impacts the size and capacity of the tankless water heater you'll need. Households with higher hot water usage may require a unit with a higher GPM and temperature rise capacity to meet the demand consistently.

Your Home Type:

The type of home you live in affects the size and model of the tankless water heater suitable for your needs. Larger homes with multiple bathrooms may benefit from whole-house models, while smaller residences or single-application uses may find point-of-use models more fitting.

Location and Installation:

The location of the tankless water heater installation influences its efficiency and performance. It's advisable to install the unit close to the point of use to minimize the wait time for hot water. Moreover, the installation should comply with local building codes and be easily accessible for maintenance. Consideration of the installation costs, including any necessary upgrades to your home's electrical or gas systems, is also vital in budgeting for your new tankless water heater.

Indoor vs Outdoor Units

Tankless water heaters can be installed either indoors or outdoors, each having its own set of benefits and considerations. Let's explore both options to help you determine the right choice for your home:

Indoor Tankless Water Heaters:

Indoor units are installed inside your home and require proper venting to expel exhaust gases safely outside. They are protected from external weather conditions, which can lead to a longer lifespan and less maintenance. However, the installation can be more complex due to the venting requirements.

Outdoor Tankless Water Heaters:

Outdoor units are installed outside your home, eliminating the need for venting. They are designed to withstand weather conditions but may require additional protection in extreme climates. The installation is generally easier and less expensive, but the units may be more prone to wear and tear from the external environment.

By understanding the differences between indoor and outdoor tankless water heaters, you can select a model that aligns with your home’s structure and your personal preferences.

Features to Look For

Investing in a tankless water heater entails more than just choosing a brand or deciding where to install it. Modern tankless water heaters come with a variety of features that can significantly enhance their efficiency and convenience. Understanding these features will aid in making an informed decision, ensuring that you get the most value out of your investment. Here are some essential features to look for:

Condensing vs Non-Condensing:

The distinction between condensing and non-condensing tankless water heaters lies in how they handle exhaust gases. Condensing units are designed to capture and reuse the heat from exhaust gases to warm up the incoming cold water. This process significantly enhances efficiency, leading to lower energy costs. However, they tend to be more expensive upfront and require proper drainage for the condensate.

Non-condensing units, on the other hand, expel the exhaust gases outside. While they are less expensive initially, they may require special venting systems to handle the high-temperature exhaust, which could add to the installation cost. The efficiency is lower compared to condensing units, which could lead to higher operational costs over time.

Modulating Burners:

Modulating burners is a feature that adjusts the burner's flame size in real time to match the current demand for hot water. This modulation ensures that the water heater operates efficiently, using only the amount of energy necessary to meet your hot water needs. The result is a consistent water temperature and lower energy consumption, which translates to lower energy bills. This feature is particularly beneficial in households with varying hot water demands throughout the day.


A recirculation system is a feature that circulates hot water through the pipes, ensuring instant hot water availability. This eliminates the typical wait for hot water, saving both time and water. Moreover, it minimizes the wastage of water that usually goes down the drain while waiting for the water to heat up. While recirculation systems add to the upfront cost, they provide significant convenience and potential water savings, making them a worthwhile consideration for environmentally conscious homeowners and those looking to enhance their home's water efficiency.

These features contribute to the performance, efficiency, and convenience of tankless water heaters. By considering these features in your decision-making process, you can choose a unit that not only meets your hot water needs but also aligns with your energy-saving and convenience preferences.

Cost and Savings

Investing in a tankless water heater is not just about meeting your hot water needs; it's also an opportunity to enhance your home's energy efficiency, reduce your carbon footprint, and save on utility bills in the long run. Understanding the financial implications, both immediate and long-term, is crucial to making an informed decision. Let's break down the cost and savings associated with tankless water heaters into four main categories:

Initial Investment:

The first financial consideration is the initial investment which encompasses the purchase price of the unit and the installation costs. The price of tankless water heaters varies significantly based on brand, model, and capacity. Additionally, installation costs can fluctuate based on the complexity of the installation, whether any electrical or gas upgrades are necessary, and local labor rates. It's vital to get a clear understanding of the total upfront cost, including any ancillary expenses such as permits or extra parts required for installation.

Operational Savings:

One of the primary advantages of tankless water heaters is their energy efficiency which translates to lower operational costs. Unlike traditional tank water heaters that continuously heat water, tankless units only heat water on demand, reducing energy consumption. The savings on your monthly energy bills can add up over time, potentially offsetting the higher upfront cost of the unit. It's wise to calculate the estimated monthly and yearly savings to get a sense of the financial benefits over the long term.

Maintenance Costs:

Regular maintenance is key to ensuring the longevity and efficiency of your tankless water heater. This includes descaling to remove mineral buildup, checking for leaks, and ensuring the venting system is functioning correctly. While some maintenance tasks can be done on your own, others may require professional service. Budgeting for routine maintenance, whether it's a yearly check-up or addressing any unexpected issues, is essential to keep your unit running optimally and avoid costly repairs down the line.

Long-term Value:

Tankless water heaters are known for their long lifespan, often exceeding 20 years with proper maintenance. This longevity presents a long-term value, especially when compared to traditional tank water heaters that typically last about 10 to 15 years. Additionally, the energy savings over time, coupled with the potential increase in your home's value, make tankless water heaters a sound investment for the future.

Tankless Water Heater Buying Guide Plano TX

Make Your Decision With Confidence With GO Heating, Air & Plumbing

Investing in a tankless water heater is a thoughtful decision that can significantly enhance your home's energy efficiency and provide an endless hot water supply. As you venture into making a choice, considering your hot water needs, the different types and features of tankless water heaters, and the associated costs will guide you towards making an informed decision. The long-term benefits of lower utility bills, less water wastage, and a comfortable home make tankless water heaters a worthy investment. Make your home a haven of comfort with a reliable, energy-efficient tankless water heater from GO Heating, Air & Plumbing in Plano, TX., your trusted partner in meeting all your home comfort needs.

Frequently Asked Questions

What is the lifespan of a tankless water heater?

Tankless water heaters are designed to last long with an average lifespan of 20 to 25 years, which is significantly longer than traditional tank water heaters that last about 10 to 15 years. Their longevity is due to the on-demand heating mechanism which reduces the wear and tear associated with keeping water heated continuously. Regular maintenance, such as annual descaling and checking for any signs of leaks or corrosion, can further extend the lifespan of tankless water heaters. Investing in a high-quality unit and ensuring proper installation are also crucial factors in maximizing the lifespan of your tankless water heater.

How do I know what size tankless water heater I need?

Determining the right size of a tankless water heater for your home involves considering two main factors: the flow rate (measured in Gallons Per Minute, GPM) and the temperature rise. Calculate the total flow rate by adding up the GPM of all the fixtures and appliances that could be running simultaneously. For the temperature rise, subtract the incoming water temperature from your desired hot water temperature. Consulting with a professional plumber or a water heater specialist with your calculations can provide personalized advice on the suitable size of a tankless water heater for your needs.

Are tankless water heaters more energy-efficient?

Yes, tankless water heaters are generally more energy-efficient compared to traditional tank water heaters. They operate on an on-demand basis, heating water only when it's needed, which significantly reduces energy consumption. Additionally, many modern tankless water heaters come with energy-saving features such as modulating burners and condensing technology that further enhance their efficiency. The energy savings translate to lower utility bills, making tankless water heaters a cost-effective choice in the long run.

Can a tankless water heater provide hot water during a power outage?

The ability of a tankless water heater to provide hot water during a power outage depends on its fuel type. Gas-powered tankless water heaters can continue to provide hot water during a power outage, although models with electronic ignition systems may require a battery backup. Electric tankless water heaters, on the other hand, will not function during a power outage as they rely on electricity to heat the water.

How often should a tankless water heater be serviced?

It's advisable to have your tankless water heater serviced annually by a professional to ensure it's operating efficiently and safely. Regular servicing includes checking for any signs of wear or damage, cleaning and descaling to remove mineral buildup, and inspecting the venting system. Some manufacturers might have specific maintenance recommendations, so it's wise to check the owner's manual for your particular unit. Regular maintenance not only extends the lifespan of the unit but also ensures you continue to enjoy the benefits of instant, on-demand hot water.