Hecker & Frères Énergie (HFE) installs and services high-performance air-to-water and air-to-air heat pumps in Lille and across the metropolitan area. Free quote, grant support for eligible air-to-water and thermodynamic water heater projects, ten-year warranty.
The most efficient heating system on the market, a heat pump harnesses renewable energy (outdoor air) to heat your home with excellent performance (SCOP of 3.5 to 4.5).
A modern heat pump uses 3 to 4 times less energy than electric or oil heating.
70 to 80% of the energy produced comes from outdoor air — a free, inexhaustible source.
MaPrimeRénov', CEE heating boost, 5.5% VAT, eco loan at 0%: up to €10,500 in combined grants.
With an air-to-air or hybrid heat pump, you heat in winter and cool in summer.
The air-to-water heat pump captures heat from outdoor air and transfers it to the central heating water circuit: radiators, underfloor heating, and domestic hot water production.
Indicative budget
€12,000 to €18,000
before MaPrimeRénov' & CEE grants
The air-to-air heat pump, also known as reversible air conditioning, distributes warm (or cool) air directly into your rooms via indoor units (split, ducted, cassette).
Indicative budget
€3,500 to €9,000
incl. VAT, installed — not eligible for MaPrimeRénov' or CEE
A water-to-water heat pump (groundwater source) draws heat from groundwater via a borehole/well and transfers it to your central heating circuit. When feasible, it offers some of the most stable and efficient performance.
Indicative budget
€18,000 to €35,000
Installed price — requires feasibility study and local authorisations
The thermodynamic water heater combines a hot water tank and a mini heat pump to produce domestic hot water at up to three times lower cost than a standard electric tank.
Indicative budget
€2,500 to €4,500
before MaPrimeRénov' & CEE grants
Compare the cost of your current heating with a Hecker & Frères Énergie (HFE) heat pump.
Indicative simulation based on 2026 energy prices and an average SCOP of 3.8. A personalised quote remains the only reliable reference.
Estimated annual savings
€1,018
i.e. 51% off your heating bill
Today
€1,993/ year
With a heat pump
€975/ year
Indicative simulation · Does not include MaPrimeRénov' or CEE grants.
A selection of recent projects in Lille and the metropolitan area — residential and commercial.
Free thermal study, quote within 72h, full support for MaPrimeRénov' & CEE applications.
Based in Lille, Hecker & Frères Énergie (HFE) covers the entire European Metropolis of Lille (MEL) within approximately 30 km. We install heat pumps, air conditioning and thermodynamic water heaters for homeowners and businesses alike.
We install leading brands on the market — reliability and long-term performance guaranteed.
Hecker & Frères Énergie (HFE) is RGE QualiPAC certified and holds all qualifications required to deliver compliant work and access to government grants.
A heat pump uses the heat naturally present in outdoor air, even in cold weather, to warm your home. It works like a refrigerator, but in reverse.
For every 1 kWh of electricity consumed, a heat pump delivers 3 to 5 kWh of heat: this is the coefficient of performance (COP).
Detailed answers to the most common questions about installation, cost, grants and servicing.
An installed air-to-water heat pump in Lille costs between €12,000 and €18,000 incl. VAT (before grants), depending on output, brand and installation complexity. With MaPrimeRénov' (up to €5,000) and CEE (up to €5,500), the out-of-pocket cost can drop to €2,000–4,000 for modest-income households. An air-to-air heat pump (reversible AC) costs between €3,500 and €9,000 incl. VAT installed: it is not eligible for MaPrimeRénov' or CEE. Hecker & Frères Énergie (HFE) is RGE QualiPAC certified for grant-eligible installations.
Choose an air-to-water heat pump if you already have a central heating circuit (radiators or underfloor heating): it replaces your oil or gas boiler and can produce domestic hot water. Choose an air-to-air heat pump (reversible AC) if you heat with electricity or want to cool your home in summer. Air-to-water is more expensive to install but offers superior comfort and efficiency.
In our experience, a properly sized air-to-air heat pump (reversible air conditioning) can improve a property's energy performance certificate — by up to three bands in some cases, especially when replacing very inefficient heating (electric radiators, supplementary heaters). The gain depends on your starting rating, the heated floor area and installation quality. Air-to-water heat pumps often deliver the largest EPC jump when replacing oil or gas boilers. Hecker & Frères Énergie (HFE) factors this into your free thermal study and quote, with a realistic estimate for your home.
Yes, perfectly. Modern heat pumps remain efficient down to -15°C, and the climate in northern France (winter temperatures rarely below -5°C) is well suited. High-temperature heat pumps can even replace oil boilers without changing radiators. Seasonal performance (SCOP) remains high: between 3.5 and 4.5 in Hauts-de-France.
For an air-to-water heat pump replacing a boiler: 2 to 3 days. For a single-split air-to-air unit: 1 day. For a multi-split (3–4 indoor units): 2 days. Hecker & Frères Énergie (HFE) carries out a prior thermal study and precise sizing to ensure installation performance.
MaPrimeRénov' and CEE grants apply to air-to-water heat pumps and thermodynamic water heaters, not to air-to-air units (reversible air conditioning). For air-to-water: MaPrimeRénov' from €1,000 (higher incomes) to €5,000 (very modest incomes), CEE heating boost up to €5,500 when replacing oil, gas or coal boilers, and 5.5% VAT on supply and installation.
Yes, heat pump servicing is mandatory since the decree of 30 July 2020: every 2 years for units under 12 kW, annually for units ≥ 12 kW. Hecker & Frères Énergie (HFE) offers maintenance contracts from €149 incl. VAT per year, including refrigerant circuit leak testing, filter cleaning and performance checks.
A well-maintained heat pump lasts 15 to 20 years. Manufacturer warranty is typically 2 to 5 years, extendable to 7 or 10 years depending on brand (Panasonic, Daikin, Mitsubishi, Atlantic). Hecker & Frères Énergie (HFE) is a Panasonic partner and provides a ten-year installation warranty.
Recent heat pumps are very quiet: 38 to 55 dB(A) at 1 metre for the outdoor unit (equivalent to a refrigerator). Our team advises on optimal placement to comply with noise regulations (decree of 5 December 2006) and preserve neighbour comfort.
