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Inertia radiators provide comfort equal to central heating. Thanks to the quality of the materials that compose them, they integrate with all the interiors and the ease of programming makes it possible to save energy. Here are the criteria of choice.

Advice and advice on 1000 W inertia radiators

Heating accounts for more than 65% of a home's energy consumption. The most requested energy is gas (44%). Fuel oil, mainly used in rural areas, saw its use decline from 20 to 14% between 1990 and 2011, and in this same period, electric heating has increased from 24 to 34% (source Ademe). This increase is explained by the performance of electric radiators with inertia, consuming less energy than the convectors.

Convector, radiator or inertia: the categories of electric heating

There are several categories of electric heating: convector, radiator, accumulator and inertia.

  • The convector uses convection to heat the air very quickly. It remains the cheapest electric heater on the market. But this type of device must be energized to heat, so a higher power consumption. In addition, its performance is mediocre remote, better to install in a small room well insulated.
  • The radiator radiator (or radiant) also uses convection, but it is a metal plate that restores heat. This system offers a greater feeling of comfort because, unlike the convector, there is no feeling of fresh air in certain areas of the house.
  • As for inertia, in addition to storage heaters equipped with a refractory material (brick) that accumulates heat at night to restore it during the day, but whose heating is slow, there are two types of technologies on the market: fluid and dry.

Fluid inertia or dry inertia: 2 technologies, a single power calculation

The radiator with fluid inertia is a heater whose electrical resistance is embedded in a coolant (usually an oil bath) present in the device.
At dry inertiathe resistance is embedded in a body (mass) of cast iron, ceramic, lava rock, glass, etc. This heat is softer and does not move dust. When the fluid or mass has accumulated the necessary calories (or the room is at proper temperature), the built-in thermostat turns off the power and the unit continues to heat the room.
As for power, it takes 50 W / m3 for a poorly insulated housing, 40 W / m3 for proper insulation and 30 W / m3 for a very well insulated room.

Heating and complete programming

If inertia is characterized by the notion of comfort thanks to its heat comparable to central heating, this technology is not new.
The real revolution lies in the programming, thanks to the onboard or remote thermostats for individual or centralized management using a central body. In addition, the management of electric heating is no longer mandatory by the pilot wire which usually allows a minimum of six orders. It can also be provided by carrier current or radio frequency.
Applications (In addition to the programming device), you can control heating from home or from outside via a tablet or smartphone. Among the evolutions, the radiators with inertia can also integrate detectors of opening of window and presence which cut off the supply or put automatically the device in operation when the window is closed or that a person enters the room.

Well insulate for less heat

The choice of an electric inertia heater is not the only criterion to consider to achieve energy savings. A well-insulated dwelling also contributes to the equation, since insulation mainly contributes to the reduction of heat losses.
In the case of total absence of insulation (carpentry, external walls, roofing), the appliances will be more frequently in operation, the rooms cooling more quickly.
We can then install more powerful radiators than the watts needed for the volumes of each room, but again the expected energy savings will not be there.

Choose between radiator with inertia or hot water?

  • The relevance of inertia heating lies in its ease of installation. Although the cost of an inertial device is higher than a convector, it remains affordable in terms of comfort.
  • Unlike a hot water heater that requires a large budget for the implementation of the water circuit, radiators and boiler, the inertia heating includes only the initial cost of the devices.
  • Inertia also makes it possible to install new appliances piece by piece. Nevertheless, if a professional is used for the installation of radiators with inertia, the only advantage is a VAT which decreases by 20 to 10%.
  • While a hot water heater equipped with a latest generation boiler can receive subsidies or the tax credit for energy transition (ISCED).

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Manufacturers have developed management bodies to create scenarios (increase or decrease the temperature automatically depending on the hours of occupation of each room), but also to display the consumption.

  • These thermostats follow the temperature rises or falls and indicate the cause as a window left open (Netatmo).
  • They also have the ability tolearn the habits of life of the occupants to adapt the regulation (Qivivo).
  • In addition to the detailed history of consumption (day, week, month, year), some managers are also equipped with the load shedding function by temporarily cutting one or more radiators in case of peak power consumption for avoid any risk of disjunction (Delta Dore Energy Manager).

6 basic rules of thermal comfort

  1. Comfort is linked to the feeling temperature, hence the importance of isolating his home. For example, the ambient air of a room at 20° C where a cold wall (exterior wall) is located at 14° C generates a perceived temperature of 17° C. While in a well insulated room, the temperature felt will be 19.5° C for the same room temperature.
  2. To combine comfort and economy of energy, the setpoint temperatures must be respectively: 16° C in a room at night (20° C for a baby's room), 18° C in the kitchen, 19° C in the living rooms, 22° C in the bathroom.
  3. Only one degree of difference (from 20 to 19° C) saves nearly 7% on electricity consumption (source Ademe).
  4. An aluminum radiator generates less inertia, but it heats faster. Conversely, a steel radiator has a longer heating time, but it enjoys greater inertia.
  5. If electric heaters are not subject to energy labeling, they nevertheless have the necessary CE and NF labels. A quality guarantee, a radiator that displays a Category C (NF Electricity Performance mark) certifies that it meets the requirements of quality, safety, reliability and that it can be installed in a pond.
  6. IP (protection index) indicates the degree of protection of the device against solid and liquid bodies. The higher the index, the more the radiator is protected (eg IP44). Regarding the bathroom, this room is divided into several volumes (from 0 to 3), the "0" corresponding to the bath or shower. The index is then displayed IP X followed by the number indicating the distance to be respected from the bottom of the shower, between 2.25 m for an index IPX1 and 60 cm of the volume 0 for an IPX3.

Reviews about 8 models of 1000 W inertia heaters

5 models of electric heaters with dry inertia

Choosing a 1000W Inertia Radiator: Tips and Criteria: tips

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3 models of electric radiators with fluid inertia

Choosing a 1000W Inertia Radiator: Tips and Criteria: radiator

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Dry inertia heating: Baladi (300 €)

Dry inertia heating Baladi, Sauter

  • H x W x D: 570 x 560 x 98 mm
  • Weight: 20 kg
  • Order: integrated
  • Heating body: volcanic stone
  • Color: white
  • Detector (s): open window
  • Standards: class II, IP24 *, CE, NF
  • 2 years warranty
  • Distribution: GSB
  • Baladi, Jumping
  • The +: device connectable via smartphone and tablet.

Dry inertia heating: Revelation (450 €)

Dry inertia heating Revelation, Castorama

  • H x W x D: 600 x 700 x 142 mm
  • Weight: 17.9 kg
  • Order: integrated
  • Heating body: cast iron
  • Front: steel + glass
  • Color: white, black
  • Detector (s): window / presence
  • Standards: class II, IP20, CE, NF
  • 2 years warranty
  • Distribution: GSB
  • Revelation, Castorama
  • The +: its steel structure associated with a glass facade.

Dry inertia heating: Liraso (450 €)

Dry inertia heater Liraso, Leroy Merlin

  • H x W x D: 580 x 770 x 147 mm
  • Weight: 22,5 kg
  • Order: integrated
  • Heating body: cast iron
  • Front: steel
  • Color: white, anthracite gray
  • Detector (s): window / presence
  • Standards: class II, IP24, CE, NF
  • Warranty: 3 years (5 years for the heating body)
  • Distribution: GSB
  • Liraso, LeroyMerlin
  • The +: the remote control provided.

Dry inertia heating: Ovation 2 (752 €)

Dry ovation heater Ovation 2, Thermor

  • H x W x D: 615 x 761 x 110 mm
  • Weight: 13 kg
  • Order: integrated
  • Heating body: aluminum
  • Front: steel
  • Color: white, slate gray
  • Detector (s): window
  • Standards: class II, IP24, CE, NF
  • 2 years warranty
  • Distribution: specialized network
  • Ovation 2, Thermor
  • The +: the consumption indicator of the control box

Dry Inertia Heating: Extra White (1,315 €)

Choosing a 1000W Inertia Radiator: Tips and Criteria: radiator

  • H x W x D: 1,050 x 630 x 85 mm
  • Weight: 30 kg
  • Order: integrated
  • Heating body: tempered glass
  • Front: shiny tempered glass
  • Color: white (colors optional)
  • Detector (s): no
  • Standards: class II, IP24, CE, NF
  • 2 years warranty
  • Distribution: Solaris L. 63 specialist network
  • "Extra White", Fondis
  • The +: low electromagnetic emission.

Fluid inertia heating: Atoll (480 €)

Fluid Inertia Heating Atoll, Acova GSB

  • H x W x D: 575 x 616 x 80 mm
  • Weight: 13 kg
  • Order: integrated
  • Front: aluminum
  • Color: white (colors optional)
  • Detector (s): window (optional)
  • Standards: Class II, IP44, CE, NF
  • 2 years warranty
  • Distribution: installers,
  • Atoll, Acova GSB
  • The +: the high IP index.

Fluid inertia heating: Vasco (522 €)

Vasco Fluid Inertia Heating, E-Panel

  • H x W x D: 800 x 600 x 73 mm
  • Weight: 28.3 kg
  • Order: integrated
  • Front: steel
  • Color: white (colors optional)
  • Detector (s): no
  • Standards: Class II, IPX1, CE, NF, TÜV
  • 2 years warranty
  • Distribution: Specialty Network
  • Vasco, E-Panel
  • The +: the 10-year warranty on heating bodies and paint.

Fluid inertia heating: Galapagos (778 €)

Fluid inertia heating Galapagos, Atlantic

  • H x W x D: 590 x 770 x 132 mm
  • Weight: 15,5 kg
  • Order: integrated
  • Front: aluminum
  • Color: white
  • Detector (s): presence, window
  • Standards: class II, IP24, CE, NF
  • 2 years warranty
  • Distribution: specialized network
  • Galapagos, Atlantic
  • The +: remote control on smartphone and tablet via the free application Cozytouch.

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