Fixed Heater
Professional fixed heating is the strategic investment par excellence for all establishments that heat the same premises year after year. Unlike ad-hoc mobile solutions, you install it once for fifteen to twenty years, connect it permanently, and forget about breakdowns, displacements, and premature replacements.
At Climatik, we support French professionals in choosing their fixed heating system based on three decisive criteria: the energy available on your site, the volumes to be heated, and the regulatory constraints of your activity. Mechanical workshop, logistics warehouse, agricultural hangar, sports hall, shop - each sector finds its optimal solution among our leading European equipment.
Three energies, three operating philosophies
Professional fixed heating comes in three radically different energy technologies in terms of operation, operating cost, and installation constraints. Your choice primarily depends on what already exists on your site.
Fixed electric heating: absolute simplicity
If you have a three-phase electrical supply with sufficient available power, the fixed electric air heater offers the simplest solution to install and the most reliable over time. No combustion, no fumes to evacuate, no burner to adjust, no mandatory annual maintenance.
You fix the appliance to the wall or ceiling, connect the electrical cable, and power it on. It works immediately, and it will continue to work for fifteen to twenty years without ever breaking down thanks to the shielded stainless steel resistors found in professional models of fixed electric heating.
The enormous regulatory advantage: total ERP compliance without any power limitation. You can install it in all public access buildings, in sensitive areas where any flame is prohibited, in confined spaces without specific ventilation. Available powers range from 3 kW single-phase for small offices to 30 kW three-phase for large workshops.
The operating cost remains the point of vigilance: electricity at twenty cents per kilowatt-hour costs about twice as much as gas or fuel oil to produce the same amount of heat. But the complete absence of mandatory maintenance (zero euros for fifteen years) largely compensates for this energy surcharge in the long term.
Fixed gas heating: comfort with urban network
If your site is connected to the natural gas network, or if you can install a propane tank, the fixed gas hot air generator combines exceptional power and controlled operating cost. Natural gas at eight to ten cents per kilowatt-hour represents the most economical heating energy currently available.
The indirect combustion technology with stainless steel exchanger completely separates the combustion and blowing circuits. Fumes are evacuated outside through a chimney or a wall-mounted vent, while the air blown into your premises remains perfectly clean, odorless, moisture-free, and emission-free. This separation allows for installation in full compliance in ERPs up to 35 kW per appliance.
Floor-standing generators from 35 to 235 kW are suitable for workshops, warehouses, and agricultural hangars. Suspended air heaters from 20 to 80 kW optimize space in high-ceilinged areas. All integrate modulating burners that automatically adapt power to actual needs, with efficiencies above 92% that maximize every euro invested in fuel.
The point of attention: installation necessarily requires the intervention of a qualified installer with gas certification, and annual maintenance by an approved professional remains legally mandatory. Allow 250 to 400 euros per year for the maintenance contract which includes cleaning, adjustment, combustion analysis, and verification of all safety devices.
Fixed fuel oil heating: total autonomy
If your site is not connected to natural gas or three-phase electricity, or if you are looking for total energy autonomy with on-site storage, the fixed fuel oil hot air generator is the essential technical solution. A 1000 to 5000 liter tank guarantees several weeks to several months of autonomy depending on your consumption.
Indirect combustion technology works on exactly the same principle as gas: the blown hot air is perfectly clean because it is completely separated from the fumes evacuated outside. The fixed fuel oil heating models from 35 to 1163 kW cover all professional needs, from small workshops to immense industrial or agricultural hangars.
The almost universal equipment with Riello burners, the world leader, guarantees exceptional reliability and total availability of after-sales service and spare parts throughout France. These burners have lifespans of fifteen to twenty years in intensive use with simple correct annual maintenance.
Domestic fuel oil at ten to twelve cents per kilowatt-hour is slightly above gas but well below electricity. Generators with an integrated 80 to 150 liter tank offer twelve to sixteen hours of autonomy for temporary installations. Models connected to external tanks completely eliminate the constraint of frequent refilling.
As with gas, installation and annual maintenance require the intervention of qualified professionals. Maintenance costs are in the same range of 300 to 500 euros per year, including complete cleaning, nozzle replacement, adjustment with combustion analysis, and chimney sweeping.
Indirect combustion: the fundamental difference with mobile heating
If you are already familiar with mobile gas or fuel oil heaters that operate on direct combustion, you need to understand the radical technological change that characterizes all professional fixed heating systems.
What a mobile heater does: direct combustion
A mobile heater burns fuel directly in the air stream that will be blown into your premises. Combustion gases (CO₂, water vapor, traces of carbon monoxide) are diffused along with the heat. This technology offers near 100% efficiency and considerable instantaneous power, but it requires permanent ventilation of the premises to renew oxygen and evacuate gases.
These appliances are perfectly suited for outdoor construction sites, semi-open spaces, and short-term occasional uses. But they are completely excluded from continuously occupied closed premises, ERPs, sensitive areas, and confined spaces.
What a fixed heater does: indirect combustion
A fixed gas heater or fuel oil heater exclusively uses indirect combustion with a heat exchanger. The burner heats a completely sealed stainless steel exchanger, usually with multiple tubes to maximize the exchange surface. Combustion gases circulate inside the tubes, transfer their heat to the metal walls, and are then evacuated outside through a vertical chimney or a wall outlet.
Meanwhile, the fan draws air from the premises, circulates it around the hot tubes of the exchanger, and blows the reheated air into the space to be heated. No contact between the two circuits. The blown air remains absolutely clean, odorless, moisture-free, and emission-free.
This total separation allows installation in all closed premises, for all operating durations, and all occupancy configurations. You heat continuously for four to six months without any particular ventilation constraint other than that required for the burner itself.
Correct sizing: the key to profitability
Sizing a fixed heating system follows a more rigorous methodology than for a supplementary mobile heater, because you are investing in an installation that must meet your needs for fifteen to twenty years. Not undersized, which struggles to heat, nor oversized, which consumes unnecessarily.
The basic formula for all professional buildings
First, calculate the volume in cubic meters: floor area multiplied by ceiling height. Then, apply a power coefficient according to insulation and usage.
Insulated building, continuous use: 35 to 45 watts per cubic meter. A 200 m² workshop with 4 m height is 800 m³, so it needs 28 to 36 kW. You will choose a 35 kW generator that covers comfortably.
Uninsulated or poorly insulated building: 50 to 70 watts per cubic meter. The same 800 m³ workshop will require 40 to 56 kW, so a 50 or 60 kW model depending on the climatic rigor of your region.
Frost protection only: 20 to 30 watts per cubic meter are largely sufficient. Your 800 m³ workshop will be protected from frost with a 20 to 25 kW generator that will maintain 5 to 8 degrees continuously.
Increases according to specific constraints
Frequently opened doors, unloading docks, constant passages? Add 30% power to compensate for heat losses during openings. Your 35 kW generator becomes a 45 kW.
High ceiling height beyond 6 meters? Prefer several medium appliances distributed rather than a single very large one. Three 60 kW generators strategically positioned heat a 10,000 m² warehouse better than a single 180 kW appliance that creates cold zones far from the blowing point.
Drying wet materials, active dehumidification? Add 40 to 50% power to provide the energy necessary for the evaporation of water contained in the materials or atmosphere.
Professional installation and commissioning
The installation of a fixed gas or fuel oil heating system necessarily requires the intervention of qualified professionals, whereas electric systems can be installed by any competent electrician.
Installation steps for combustion systems
The qualified installer performs the connection of the fuel supply from the tank or gas network, correctly sizing the piping according to power and distance. He installs the fume evacuation with strict adherence to safety distances and minimum regulatory heights.
He connects the electrical supply for ventilation and automatisms, sets up the remote control thermostat, performs the first ignition with complete burner adjustment and combustion analysis to optimize efficiency and minimize polluting emissions.
A commissioning certificate is provided to you, an essential document for your insurance and regulatory compliance. This document certifies that the installation complies with all current standards and that the appliance operates within optimal safety parameters.
Mandatory annual maintenance: a protective investment
The annual maintenance contract, ranging from 250 to 500 euros depending on the power, includes complete cleaning of the combustion chamber and heat exchanger, replacement of the nozzle for fuel oil or verification of injectors for gas, cleaning of the flame detection cell, and complete verification of the fuel pump and filters.
The technician also adjusts combustion with smoke analysis to maintain optimal efficiency, checks all safety devices (thermostats, air pressure switch, flame detector), and sweeps the fume evacuation chimney.
This maintenance is not a superfluous expense: it extends the lifespan from fifteen to twenty years by preventing premature fouling, it maintains optimal efficiency which saves 10 to 15% of fuel compared to a poorly maintained appliance, and it prevents catastrophic winter breakdowns that would immobilize your activity.
Total cost of ownership over fifteen years
Intelligently comparing the three energies requires calculating the total cost of ownership including purchase, installation, annual consumption, and mandatory maintenance over the entire lifespan of the equipment.
Concrete example: heating a 150 m² workshop
Mechanical workshop of 150 m² with 4 m height, i.e. 600 m³ to heat. Correct insulation, 8 hours a day, 5 days a week, 5 months of heating per year. Power requirement: 25 to 30 kW.
Electric solution: 30 kW three-phase air heater at €2,500 including installation. Estimated annual consumption: 6,000 kWh × €0.20 = €1,200/year. Zero mandatory maintenance. Over 15 years: €2,500 + (€1,200 × 15) = €20,500 total.
Natural gas solution: 30 kW generator at €5,000 installed with burner and exhaust. Estimated annual consumption: 6,000 kWh × €0.09 = €540/year. Mandatory maintenance: €350/year. Over 15 years: €5,000 + (€540 × 15) + (€350 × 15) = €18,350 total.
Fuel oil solution with tank: 30 kW generator connected to tank at €5,500 installed. Estimated annual consumption: 600 liters × €1.00 = €600/year. Mandatory maintenance: €400/year. Over 15 years: €5,500 + (€600 × 15) + (€400 × 15) = €20,500 total.
In this example, natural gas clearly stands out if the connection exists. Electric and fuel oil are equivalent over fifteen years, the choice then depending on the technical constraints of the site.
Sectoral applications: finding your configuration
Each professional sector finds its optimal solution according to its specific operating constraints.
Mechanical workshops and car garages
Classic configuration: electric or gas generator from 15 to 35 kW depending on the surface area, wall-mounted with horizontal blowing. Set temperature 16 to 18 degrees during working hours, lowered to 10 degrees at night to save energy. Electric dominates in this sector for its ease of installation and the absence of emissions in the workspace.
Logistics warehouses and industrial hangars
Optimal configuration: ceiling-suspended air heaters from 60 to 80 kW every 200 m² approximately, with vertical blowing towards the floor and destratification function to recover hot air at height. Gas or fuel oil are essential to reach these high powers without overloading the electrical installation.
Agricultural hangars and livestock buildings
Specific configuration: 90 to 235 kW fuel oil generators connected to a 2,500 to 5,000 liter tank for maximum autonomy. Outdoor installation under shelter with distribution by perforated textile ducts. Fuel oil reigns supreme in rural areas not connected to natural gas.
Sports halls and public access buildings
Regulatory configuration: electric heating preferred for total ERP compliance without power restriction. Alternatively, indirect combustion gas generators limited to 35 kW per appliance with installation in boiler room or outdoors. Electric radically simplifies all administrative procedures.
Climatik's support for your fixed heating project
We don't just sell hot air generators. We support you in the overall design of your installation to ensure that it will perfectly meet your actual needs for fifteen to twenty years.
Our expertise focuses on precise sizing based on your volumes, insulation, daily use, and operating constraints. We analyze with you the three available energies according to your technical situation and calculate the total cost of ownership over fifteen years to enlighten your decision.
We direct you to equipment from leading European manufacturers such as Sovelor-Dantherm, SPLUS, Thermobile, Airlat for gas and fuel oil, Frico and Teddington for electric. All these manufacturers guarantee the availability of after-sales service and spare parts throughout France.
We then put you in touch with qualified installers in your region for combustion systems that require specific professional certifications. For electric, we provide you with detailed connection diagrams that allow your usual electrician to perform the installation in full compliance.
All our fixed hot air generators are available in stock with fast delivery throughout France from our warehouse in Olivet. Manufacturer's warranty 2 to 3 years depending on the brand, covering all mechanical and electrical components.
