Electric Thermal Storage System

Table of Contents

• What is an electric thermal storage heater?
• How does an ETS system work? 
• Why choose a thermal storage heater?
• Advantages of combining an electric thermal storage unit with a heat pump
• The Steffes Serenity System
• Installation, maintenance and purchase of electric thermal storage systems in Quebec 

 

What Is an Electric Thermal Storage Heater?

An electric thermal storage system — also known as a thermal storage heater — is a central forced-air heating system that uses electricity as its sole energy source.
It stores heat produced during off-peak hours and releases it gradually throughout the day to maintain a constant temperature in your home. The result: a stable indoor climate and uninterrupted comfort.

This clean-energy technology is an ideal alternative to traditional oil or gas heating systems.

 

How Does an ETS System Work?

The principle behind an electric thermal storage system lies in its ability to absorb, store, and release heat efficiently.

1. Heat absorption

Electricity generated during off-peak hours is converted into heat and transferred into the storage unit.

2. Heat storage

The heat is stored inside dense ceramic bricks within the system’s core. Thanks to high-quality insulation, thermal losses are kept to a minimum.

3. Heat release

The stored energy is then released gradually at a controlled rate during peak hours, ensuring consistent indoor comfort. Even during a power outage, the stored heat keeps your home warm.

Bonus: When combined with a central heat pump, the system provides both heating and cooling for year-round comfort and energy efficiency.

 

Why Choose a Thermal Storage Heater?

This electric thermal storage technology is perfectly suited to Quebec’s energy context. By using low-cost electricity during off-peak periods, it allows homeowners enrolled in Hydro-Québec’s Flex D dynamic pricing program to save between $200 and $300 per year on their electricity bill.

Even better—financial incentives of up to $22,000 are available through the Logis Vert program to encourage the adoption of eco-friendly home heating systems.

 

Advantages of Combining an Electric Thermal Storage Unit With a Heat Pump

To maximize the benefits of this heating system, it’s wise to combine the electric thermal storage unit with a central heat pump. Here’s why this combination is so advantageous:

All-in-one heating and cooling system

All-in-one heating and cooling system

Together, these two technologies form a high-efficiency, fully electric system that provides both heating and cooling throughout the year.

Optimized performance

Optimized performance

By maximizing the efficiency of your central heat pump, the electric thermal storage system improves overall performance in both heating and cooling modes.

Enhanced comfort

Enhanced comfort

Precise temperature control eliminates the slight coolness often associated with air-blown heating from standard heat pumps.

In short, pairing a thermal storage heater with a central heat pump—especially under Hydro-Québec’s dynamic pricing plan—creates the most energy-efficient and comfortable all-electric heating and cooling system available today.

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The Steffes Serenity System

Steffes is a pioneer in the field of electric thermal storage. This manufacturer is behind the Serenity system with integrated thermal storage.

 

The Benefits

The Benefits

Energy efficiency

The Serenity system uses electricity—a renewable, zero-emission energy source—to generate and store heat during low-demand hours. This approach reduces greenhouse gas emissions and takes full advantage of hydroelectric power.

Significant savings

By storing heat during off-peak hours, the Serenity electric thermal storage system helps reduce heating costs, particularly during peak demand periods when rates are higher.

Homeowners enrolled in Hydro-Québec’s Flex D plan typically save between $200 and $300 annually.

In addition, financial assistance of up to $22,000 is available when the system is paired with a central heat pump.

Comfort

The gradual release of heat ensures a steady, comfortable temperature throughout your home—no more sudden fluctuations.

Quiet operation

The thermal storage heater runs quietly, offering a more peaceful experience than traditional combustion-based systems.

 

Maintenance

Maintenance

The Steffes Serenity electric thermal storage heater requires very little maintenance over time.

Steffes warranty

 

Steffes warranty

All Serenity models are backed by a 5-year parts warranty, ensuring peace of mind and long-term reliability.

 

Installation, Maintenance, and Purchase of Electric Thermal Storage Systems in Quebec

Installing an electric thermal storage system requires certified technicians. At Les Entreprises MPH, we handle the sale, installation, and maintenance of your entire heating system —with no subcontracting— anywhere across the North Shore.

Your satisfaction is our top priority. Our certified experts take the time to fully understand your needs and recommend the heating solution best suited to your home’s configuration—whether it’s an electric thermal storage heater, electric furnace, central heat pump, or ductless mini-split.

Request your free quote today!