Why does EcoChaleur not publish a pricing grid?

Every home is different. The quote depends on the area to be heated, the level of insulation, the state of the existing electrical circuit, the number of radiators required and the chosen model. A generic pricing grid would overestimate some cases and underestimate others. We prefer a personalized quote after a free thermal assessment at your home.

How do I estimate the power I need?

The basic rule: 70 W/m2 in a well-insulated home (PEB B or A), 100 W/m2 in an average insulated home, up to 150 W/m2 in an older, non-renovated home. To these values are added exposure factors (North wall, double exposure), ceiling height, and actual use (primary vs secondary residence).

Is the thermal assessment subject to a fee?

No, the thermal assessment at your home is free and without obligation. Our technician measures the physical elements of your home, identifies the electrical constraints, and establishes the detailed quote. You remain free to compare or take your time before signing.

Does the quote include VAT?

Yes, the EcoChaleur quote systematically displays the amount excluding VAT, the VAT amount, and the amount including VAT. The applied VAT rate depends on your situation: 6 percent for soapstone radiators in a home over 10 years old, 6 percent for heat pump water heaters without age condition for the home (special regime 2026 to 2030), 21 percent in other cases.

Are heat pump water heaters more expensive than classic electric ones?

At the time of purchase, yes. Over its total lifespan (15 to 20 years), however, the heat pump water heater consumes about three times less electricity than the direct electric water heater, which largely compensates for the initial difference. The Prime Habitation in Wallonia (280 to 1,680 €) and the 6 percent VAT rate further reduce the initial cost gap.

Are there hidden costs after installation?

No. The quote details all the services (supply, installation, connection, commissioning, application setup). Annual maintenance is not mandatory for soapstone radiators (zero maintenance on the stone). For heat pump water heaters, an optional annual maintenance is offered to preserve the real COP and the lifespan. No subscription is imposed.

Pricing and available powers

Rather than a generic pricing grid that overestimates or underestimates your case, we offer a free thermal assessment at your home and a personalized quote. This page details the range of available powers, the calculation of the thermal need per room, and the VAT conditions applicable to your situation.

Why a personalized quote

Every home presents a unique combination of factors that weigh on the sizing and therefore on the quote:

Total area and distribution per room
Insulation level (roof, walls, windows, floor)
Exposure of each room (North, South, double exposure)
Ceiling height and volume to be heated
Condition of the existing electrical circuit (panel capacity, available amperage)
Type of housing (terraced house, villa, apartment, mezzanine)
Actual use (primary residence, secondary, teleworking)

A fixed pricing grid cannot reflect these variations. The free thermal assessment specifically targets these parameters and makes it possible to establish a quote that will neither be oversized (excessive unused power) nor undersized (lasting discomfort).

The power range

EcoChaleur soapstone radiators are available in five power levels, from the auxiliary model to the flagship for large rooms. Here is the typical use per power.

Power	Typical room	Indicative area	Notes
200 W	Toilet, dressing room, utility room, small office	up to 3 m2	Auxiliary model, occasional use.
500 W	Bathroom, small bedroom, utility room	4 to 6 m2	Fast pre-heating, compact wall format.
1000 W	Standard bedroom, small office, compact dining room	7 to 12 m2	The most sold format in renovations.
1500 W	Medium-sized living room, large bedroom, open kitchen	13 to 18 m2	Significant inertia, long heat release.
2000 W	Large living room, open living space, mezzanine	19 to 25 m2	Flagship model, ideal for moderately insulated homes.

Calculate the thermal need per room

For a preliminary estimate of the power to be installed, apply the following rule based on the insulation level of your home:

Well-insulated home (PEB A or B): 70 W per m2 of heated area
Average insulated home (PEB C or D): 100 W per m2
Older non-renovated home (PEB E or lower): 130 to 150 W per m2

Correction coefficients are added to this basic calculation. A North-facing room adds about 10 percent to the basic need. A room with a ceiling height greater than 2.80 m requires an increase proportional to the volume. A room with double exposure (two external walls) also adds 10 to 15 percent.

Example: a 20 m2 living room in an average insulated home, facing South, height 2.50 m, requires approximately 2,000 W of installed power. This can be divided into a single 2000 W radiator, or two 1000 W radiators placed on either side.

6 percent VAT conditions

Two reduced VAT regimes coexist in 2026, applicable depending on the product:

Classic renovation regime: soapstone radiators, boilers, water heaters. Condition: home over 10 years old, installation by a professional.
Special heat pump regime 2026 to 2030: heat pumps and heat pump water heaters. No condition regarding the age of the home, applicable until December 31, 2030.

The VAT saving represents about 15 percent of the total invoiced amount compared to the standard rate of 21 percent. It is applied directly by the installer under his tax responsibility, without you having to take any steps. The EcoChaleur quote systematically displays the amount including VAT.

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