Hot Water Ottawa

Guide To Buying the Best Water Heater in 2024

Guide To Buying the Best Water Heater in 2022

Use our water heater guide to explore all your options and decide what type of water heater is best for your Ottawa household.

Looking for a brand comparison? Skip the rest of this content to read our comparison of John Wood vs Bradford White vs Rheem vs AO Smith vs Giant.

Is It Time To Replace Your Water Heater?

Consider yourself lucky if your water heater has lasted more than 12 years. These heavily used appliances eventually do wear out. If you’ve noticed signs your water heater isn’t working correctly, like visible leaks, loud noises or the inability to heat water properly, it is likely time to replace your old water heater.

Before you buy or rent a water heater, it’s important to understand the different types of water heaters and how they work.

How Do Water Heaters Work?

Gas and electric water heaters work hard to increase the temperature of our cold Ontario water.

How do they do it? Typically, water is heated inside a storage tank by an electric or gas heater. Tank models tend to use more energy to create hot water than other models. A tankless water heater, on the other hand, uses less energy. Let’s look at the most popular types.

Types of Water Heaters

There is no clear winner in the tank vs tankless water heater debate because energy sources, capacity, needs, and preferences vary from household to household. Each heats water differently, but both provide the reliable hot water we depend on.

Storage-Tank Water Heaters Rheem Hot Water Tank

A storage-tank water heater is the most common type offered as a natural gas or electric unit.

Storage tank water heaters operate through a heat exchange process. This starts as cold water enters the tank from the bottom. Under the tank, a burner (used in gas water heaters) or a heating element (used in electric water heaters) heats up the water.

Then, the newly heated water becomes less dense and naturally rises to the top of the tank. A pipe at the top of the tank carries the hot water to our sinks, showers and appliances. Cold water is replaced as hot water leaves the tank. These water heaters also feature temperature and pressure relief valves that open when triggered.

Storage tank water heaters are found in most older homes. A worn-out tank is usually replaced with a newer version of the existing gas water heater, either electric or natural gas.

Tankless Water Heaters

Sleek and modern, tankless water heaters are quickly gaining popularity in Ottawa. These units are wall-mounted and heat water as you use it.

The mechanics of a tankless unit are relatively straightforward. Like conventional water heaters, tankless heaters use a natural gas burner (or electric water heater element) to generate hot water. In this case, though, everything happens on demand. For example, as soon as you open a hot water faucet or turn on an appliance that requires heated water, water enters the chamber. This prompts an internal computer to send a signal to start the heating process. A heat exchanger then quickly ensures the desired water temperature is reached.

Tankless water heaters are sometimes referred to as point-of-use, instantaneous or on-demand water heaters.

Compare Tankless vs Hybrid Water Heaters to help you make your decision.

Other Types of Water Heaters

Your choice of water heaters also extends to heat pump water heaters (also known as hybrid water heaters).

  • Heat Pump Water Heaters: Inside a heat pump water heater, a fan draws air into the unit. The air passes through an evaporator filled with refrigerant, absorbing enough heat to turn into a hot gas. This gas passes through tubes that transfer heat to water in a storage tank. Learn about the pros and cons of a Hybrid Water Heater to help you decide if it’s right for your Ottawa home.

These systems tend to have higher installation costs and may require additional space, ceiling clearance, venting, or drains.

Are Water Heaters Energy-Efficient?

Water heating accounts for 15-25% of household utility costs, making water heaters the second-highest source of home energy usage. Thankfully, technological advancements have led to the development of newer energy-saving models.

Standard water heaters are not known for energy efficiency. When hot water is not being used, tank-style electric water heaters and natural gas water heaters continue to heat the water. Unless you have a heavily insulated tank, some standby heat loss occurs.

ENERGY STAR certified water heaters use less energy than traditional models, allowing homeowners to save energy. In addition, certain natural gas storage tank and tankless models are ENERGY STAR approved.

If you are looking to switch from a storage-tank water heater to a tankless unit, it might not seem cost-effective due to higher installation expenses. Don’t let this dissuade you. ENERGY STAR certified tankless water heaters allow you to save money and recoup your costs over time. Because tankless water heaters only heat water as it passes through the unit, there is reduced energy consumption and no standby heat loss. These heaters have earned a high Energy Factor (EF) rating for overall energy efficiency for reasons like this.

Are There Canadian Rebates for Water Heaters?

Yes! The Canadian government is currently offering substantial incentives to Ottawa homeowners who make eco-friendly retrofits to their homes.

Under the Canada Greener Homes Grant, Ontario residents are eligible for the following rebates:

  • Energy-efficient Hybrid Heat Pump Water Heaters: $1,000 maximum
  • Required in-home evaluations: $600 maximum
  • (To qualify for the rebates, pre- and post-retrofit evaluations must be conducted.)

To meet all rebate requirements, it is necessary to adhere to the program guidelines carefully. Please contact us for more information about the Green Homes Grant.

Do Tank Size and Gallon Capacity Matter?

Water heater size and capacity are directly related to your household size and how much hot water your family needs.

Tank capacities vary, but the average size falls within the 40-60 gallon range. Before you decide on a specific tank, become familiar with the First Hour Rating (FHR). This represents the amount of hot water your water heater can produce within one hour. You can find a unit’s FHR on its EnerGuide label, which states how much energy a product uses and how it compares to similar models.

Tankless water heaters don’t have a large reservoir, so look for the gallons-per-minute (GPM) rating. This will tell you how much hot water the unit can deliver per minute. A model with a high GPM delivers more hot water.

You should consider many factors before you make your choice. We recommend discussing your appliance requirements with a licenced, qualified professional before selecting a water heater.

Should I Consider Renting a New Water Heater?

While buying a water heater makes sense for many homeowners, others enjoy low payments and flexibility in a rental program. Choosing to rent a tankless water heater from Hot Water Ottawa includes removing your old unit, installing your new one, no-hassle repairs, maintenance, and an attractive buy-out option.

What Are the Best Water Heater Brands?

Hot Water Ottawa offers only well known and trusted water heater brands, including:

Our highly trained and licenced technicians can service any water heater make or model should you require repairs or maintenance.

John Wood

John Wood is a trusted brand known for its reliable water heaters in Canada. Their products are recognized for their durability, performance, and energy efficiency. The brand offers a range of traditional tank-style water heaters suitable for various household sizes, ensuring a consistent supply of hot water.

We can install your John Wood tank hot water heater, no matter where you live in the Ottawa area!


Rheem is a well-established and respected brand that provides a wide selection of water heater products. Rheem water heaters are known for their innovation, energy efficiency, and advanced features. Rheem offers both tank and tankless water heaters, catering to different preferences and needs, making them a popular choice for homeowners looking for reliable and efficient solutions.

Get your Rheem water heater installed today with Hot Water Ottawa!

AO Smith

AO Smith is another reputable brand in the water heater industry. They are known for their high-quality products and innovative technology. AO Smith offers a variety of gas and electric water heaters and combi boilers, known for their longevity and efficient performance. AO Smith uses commercial-grade components, making them super reliable and long-lasting.

Contact us today for more information on AO Smith water heaters.


Rinnai specializes in tankless water heaters, which are praised for their compact design, energy efficiency, and endless hot water supply. A tankless water heater is a great choice for homeowners looking to save space and reduce energy costs. With endless hot water, a compact size, and premium quality and durability, Rinnai’s tankless water heaters are leaders when it comes to heating water for your house.

Licensed experts at Hot Water Ottawa are available to answer any questions you have about Rinnai’s tankless water heater. Take a look at some of the best tankless water heaters around with our guide.

Navien is a leading brand in the tankless water heater market, known for its cutting-edge technology and high efficiency. Their products offer consistent hot water, space-saving designs, and excellent energy savings. Navien boasts the #1 selling Energy Star certified condensing tankless water heater system in North America.

Hot Water Ottawa provides excellent service for your Navien tankless hot water heater. Get in touch today! See our guide on the best tankless water heater brands for a more in-depth look at what Navien has to offer.


Noritz is a respected brand that focuses on tankless water heaters. They are praised for their compact units, high efficiency, and durable construction. Noritz tankless water heaters are designed to provide on-demand hot water while saving space and energy.

Let our licensed experts guide you through the tankless water heater installation process.


Bosch is a trusted name in various industries, including water heaters. They offer reliable and efficient tankless water heaters designed to provide continuous hot water without wasting energy. Bosch products are known for their quality and durability.

Our guide offers some more information on Bosch’s high-quality tankless water heater products. Our water heater technicians are certified, trained, and experienced to get the installation done right!

Bradford White

Bradford White is a well-known brand that offers a wide range of water heaters, including both traditional tank water heater styles and innovative tankless models. Their water heaters are recognized for their durability and long lifespan, making them a preferred choice for many homeowners.

Get in touch with your Hot Water Ottawa experts for their recommendations on the best storage tank water heaters for your home!


Giant is a Canadian brand that specializes in water heaters. They offer both traditional and tankless models known for their performance and energy efficiency. Giant water heaters are designed to meet the hot water needs of Canadian households effectively.

The experts at Hot Water Ottawa will help you decide which model of water heater is right for you. Modern households with multiple bathrooms, multi-showerhead systems, and extra large bathtubs will need much larger storage tanks than a small household with two people.


Vesta focuses on tankless water heaters, offering space-saving solutions that provide on-demand hot water while reducing energy consumption. Their tankless units are designed to be reliable and efficient, catering to the needs of homeowners seeking sustainable and convenient hot water solutions.

Get the full picture, and courteous, tailored service from the Hot Water Ottawa team, your water heater experts! We can provide you with a quote for the right model for your home and give you all the costs upfront. Vesta carries some of the best tankless water heaters that are an easy solution to your problem.

What Determines The Best Water Heater Brands?

To choose the best water heater brand for your Canadian home, it’s essential to consider several key factors that impact the performance, efficiency, and longevity of the unit. Here are the critical considerations that determine the top water heater brands:

1. Energy Efficiency

One of the most significant factors to consider when evaluating water heater brands is their energy efficiency. Look for brands that offer high Energy Factor (EF) ratings and are ENERGY STAR® certified. A more efficient water heater not only saves you money on energy bills but also reduces your environmental footprint.

2. Water Heating

The ability to heat water quickly and maintain a consistent temperature is crucial. A top water heater brand should deliver reliable and efficient heating performance, ensuring you have a consistent supply of hot water when you need it most. Consider brands with advanced heating technology that can handle peak usage times without compromising performance.

3. Longevity

A water heater is a significant investment, and you want it to last. Reliable brands often have a track record of durability and offer warranties that reflect their confidence in their products. Research customer reviews and industry ratings to get an idea of the longevity and overall satisfaction with the brand’s water heaters.

4. Size

Choosing the right-sized water heater for your household needs is crucial. A brand that offers a variety of sizes and types (tankless, traditional, etc.) can better accommodate different homes and usage patterns. An appropriately sized water heater ensures you have enough hot water without wasting energy or overspending on a larger unit.

5. Noise

Some water heaters can be noisy during operation, which can be a concern, especially in smaller homes. Brands that prioritize quiet operation can enhance your overall home comfort. Look for units designed with noise reduction features, allowing you to enjoy hot water without disruptive sounds.

By considering these essential factors and exploring reputable brands like the ones mentioned above, you can make a well-informed decision and select the best water heater for your specific requirements. It’s crucial to assess your household’s size, hot water usage, and long-term energy savings to ensure the chosen water heater meets your needs effectively.

John Wood vs Bradford White vs Rheem vs AO Smith vs Giant

John Wood Water Heaters

John Wood Water Heater Installation


John Wood offers a range of innovative features designed to enhance user experience and ensure reliable hot water supply. Their water heaters come with advanced controls, safety mechanisms, and durable construction for long-lasting performance.

Most Efficient System

Envirosense PV – This system boasts high energy efficiency, utilizing cutting-edge technology to optimize heating and minimize energy consumption. It provides precise temperature control and rapid hot water delivery.

Most Cost Friendly

Atmospheric Vent – This option is designed for affordability while still delivering reliable hot water. It’s a solid choice for homeowners looking for a budget-friendly solution.

Bradford White


Bradford White emphasizes quality and durability in their water heaters, incorporating features like advanced anode systems, superior insulation, and self-cleaning mechanisms to extend the lifespan of their products.

Most Efficient System

High-Efficiency EF Series Power Vent Gas – Bradford White’s high-efficiency system offers superior energy savings and performance. It utilizes power venting technology to maximize efficiency and minimize heat loss.

Most Cost Friendly

Atmospheric Vent Gas – This option provides cost-effective hot water solutions without compromising on quality. It’s a reliable choice for homeowners seeking affordability.


Giant Atmospheric Water Heater



Giant water heaters focus on durability and reliability. They incorporate corrosion-resistant materials and advanced components to ensure consistent hot water supply and longevity.

Most Efficient System

Gas Power Direct Vent – Giant’s high-efficiency system uses direct venting technology to maximize energy efficiency. It’s designed to provide exceptional performance while reducing energy costs.

Most Cost Friendly

Giant Hot Water Tank Gas Atmospheric – This option offers affordability without sacrificing essential features. It’s suitable for those looking for a budget-friendly water-heating solution.

AO Smith


AO Smith water heaters come with innovative design elements, such as advanced burner technology, self-cleaning mechanisms, and durable tank construction, to ensure reliable and efficient operation.

Most Efficient System

Condensing Bottom-Fired Stainless Steel Polaris High Efficiency – This high-efficiency system utilizes condensing technology to achieve impressive energy savings and rapid hot water delivery.

Most Cost Friendly

Atmospheric Vent ProLine – AO Smith’s cost-friendly option offers dependable performance at an affordable price point. It’s suitable for homeowners seeking a budget-conscious water heater.


Rheem Water Heaters Installation


Rheem water heaters are known for their advanced technology and user-friendly features. Their best hot water tanks incorporate smart controls, efficient burners, and durable components to ensure reliable performance.

Most Efficient System

Professional Prestige Maximus Gas Water Heater – Rheem’s high-efficiency system offers advanced features and performance for optimal energy savings and hot water delivery.

Most Cost Friendly

Professional Classic Series Direct Vent – Rheem’s cost-friendly option offers a budget-conscious solution without compromising quality. It features reliable direct venting technology and essential functionality, making it a practical choice for homeowners seeking affordability.

Ottawa Area Hot Water Heater Installation and Rental Services

If you are searching for a new water heater or have questions about water heater models, speak with an expert at Hot Water Ottawa. Our team provides professional installation and replacement services, as well as water heater rentals and repairs.


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