Tankless water heaters are gaining popularity, and for good reason! They’re energy-efficient, save space and never leave you with a cold shower. Here, our experts break down everything you need to know about tankless water heaters so you know exactly what to expect if you choose to make the switch.
How does a tankless water heater work?
Tankless water heaters, also known as on-demand water heaters, heat water directly without the need for a storage tank. When you turn on a hot water tap, cold water travels through a pipe into the unit. A gas burner or electric element heats the water as it passes through, providing a continuous supply of hot water. This means you never run out of hot water, making tankless systems an appealing choice for families with high hot water demands (think hot showers for everyone all morning!).
How fast do tankless water heaters work?
Tankless water heaters are not instant. It takes time to fire up the gas burner or heat the electric element and then heat the water flowing through it. Compared to a traditional storage tank that keeps 40 or 60+ gallons of water hot, you can expect to add a delay of about 15-20 seconds for hot water in a typically sized family home. In exchange for this, you gain huge efficiency by not having to store and heat huge amounts of hot water. You can also cut down this time by selecting a more capable tankless water heater. Most premium models include a small reservoir of water that they keep hot to cut down on this delay. Additionally, recirculation kits are available on many models that keep hot water circulating between the tankless unit and the tap where the kit is installed, allowing for the fastest delivery of hot water possible. These recirculation kits are also a great way to keep hot water flowing in winter and avoid the dangers of frozen pipes!
What are the pros and cons of a tankless water heater?
Pros:
- Energy Efficiency: ENERGY STAR-certified tankless water heaters only heat water as needed, which can lead to significant energy savings—up to 30% compared to traditional water heaters.
- Space-Saving Design: Their compact size allows for flexible installation options, even in small spaces.
- Longevity: Tankless systems typically last longer than traditional units, often with a lifespan of over 20 years.
Cons:
- Higher Initial Cost: The upfront cost of purchasing and installing a tankless water heater can be higher than that of a storage tank water heater.
- Flow Rate Limitations: While you won’t run out of hot water, tankless units have a limited flow rate. If multiple outlets are used simultaneously, you might experience a decrease in water temperature.
- Installation Challenges: Retrofitting an existing system to accommodate a tankless water heater can sometimes require significant modifications.
How do you install a tankless water heater?
Installing a tankless water heater typically requires professional assistance. The installation involves several steps:
- Assessment: A qualified technician will evaluate your home’s plumbing and electrical systems to determine the best location for the unit.
- Ventilation: If you’re installing a gas model, proper ventilation is essential to ensure safe operation.
- Plumbing Connections: The technician will connect the unit to your existing water lines and make any necessary adjustments to accommodate the new system.
- Testing: Once installed, the system will be tested to ensure it operates correctly and efficiently.
Gas vs electric tankless heaters: what’s the difference?
The choice between gas and electric tankless water heaters primarily revolves around efficiency and cost. Gas models typically provide a higher flow rate and are better suited for larger households with higher hot water demands. They can be more cost-effective in the long run, especially in regions where natural gas prices are lower.
On the other hand, electric tankless heaters are a greener solution, can be easier to install and require less maintenance, but they may not deliver hot water as quickly as their gas counterparts. For optimal performance, gas models are generally recommended, particularly for households that require significant hot water usage.
Do you need a vent for tankless water heaters?
Gas-powered tankless water heaters require venting to safely expel combustion gases. The type of venting system needed will depend on the specific model and the configuration of your home.
Electric models, however, do not require venting, making installation simpler in that regard.
What are the best tankless water heater brands?
Some of the top brands known for producing reliable tankless water heaters include:
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- Navien: Known for high efficiency and advanced technology.
- Rinnai: Offers a variety of models suited for different home sizes and needs.
- Rheem: Carries super high efficiency condensing tankless heaters.
- Bosch: Renowned for compact design and ease of installation.
- EcoSmart: Focuses on electric options and eco-friendly features.
Each brand has its own strengths, so consider your specific needs and preferences when choosing.
What maintenance does a tankless water heater require?
Regular maintenance is, in fact, needed to keep your tankless water heater running smoothly. Key maintenance tasks include:
- Descaling: Tankless units should be descaled periodically to prevent mineral buildup, especially in areas with hard water. Descaling can be achieved by performing a system flush. Commercial descaler solutions are sometimes needed if your water is particularly hard. In those situations, we recommend adding a water softener to get the water hardness below 7.5 grains per gallon.
- Filter Cleaning: Many units have filters that should be cleaned or replaced to ensure proper water flow.
- Annual Inspections: Having a professional check your system annually can help identify potential issues before they become serious problems.
Is a tankless heater the same as hot water on demand?
Yes, a tankless heater is often referred to as a hot water on-demand system. This terminology reflects its ability to provide hot water whenever it’s needed, rather than heating and storing it in a tank. This on-demand feature is what sets it apart from traditional water heaters, which continuously maintain a reservoir of hot water.
Where can you buy a tankless water heater in Ontario?
In Ontario, you can purchase tankless water heaters at various home improvement stores, plumbing supply shops, and through specialized HVAC retailers. Additionally, many brands offer direct sales through their websites. Be sure to check for local promotions and rebates that might be available.
ClimateCare locations across Southern Ontario offer installation and purchasing services alongside maintenance bundles with the rest of your HVAC system. Check your nearest ClimateCare here to see what they offer.
Can you rent a tankless water heater?
Yes, many HVAC companies offer rental options for tankless water heaters. Renting can be a low-barrier way to access high-efficiency heating without the upfront purchase cost. However, owning a unit usually saves you the most in the long term. As another option, you can consider financing and subscription programs as well.
These options are particularly appealing for homeowners who want flexibility or may not stay in one location for long.
Heat pump water heater vs. tankless: what’s more efficient?
Heat pump water heaters and tankless water heaters both offer energy-efficient solutions, but they operate differently. Heat pump water heaters extract heat from the air or ground and transfer it to a water tank, while tankless heaters provide hot water through element conduction.
If you prioritize a consistent hot water supply, a tankless model might be the way to go. However, if you’re looking for maximum energy savings and are okay with a slower hot water recovery time, a heat pump water heater could be more efficient.
Do tankless water heaters ever run out of hot water?
Tankless water heaters provide a continuous supply of hot water as long as they’re operating within their flow rate limits. However, if multiple outlets are drawing hot water simultaneously, you may experience a drop in temperature. Proper sizing and installation can help mitigate this issue, ensuring that your tankless system meets your household’s demands.
Is hot water on-demand worth it?
Investing in a tankless water heater can be worth it, especially if every member of your household complains about the hot water running out! The potential long-term savings on energy bills and the convenience of having hot water on demand make it an appealing option for many homeowners. However, it’s essential to assess your household’s specific hot water needs and usage patterns before making a decision. You may rack up more bills if you start using more hot water than usual.
Ready to Upgrade Your Hot Water System?
If you’re considering a tankless water heater for your home, ClimateCare is here to help. Our experts can guide you through the selection and installation process, ensuring you find the perfect fit for your needs. Contact your nearest location today to learn more!
