Since September 1, 2026, decree no. 2026-822 has reconfigured access to energy renovation aids. Insulation by gesture, replacement of a water heater, or installation of a mechanical ventilation system no longer benefit from MaPrimeRénov’ in a single gesture for most households. Optimizing your home for comfort and energy efficiency now requires a different approach, coordinating the work together rather than stacking them.
Thermal comfort without single gesture subsidy: rethinking your renovation budget
The removal of single gesture aids for insulation or ventilation changes the hierarchy of priorities. We observe that many homeowners are postponing work that is profitable in the medium term due to a lack of immediate financial signals.
The trap is to think on a case-by-case basis. Attic insulation remains one of the most effective gestures in terms of reducing heating consumption, subsidy or not. The return on investment depends on the cost of energy, not the amount of the grant.
For those who wish to access the Absolutis homepage, the available resources help structure a coherent renovation project by identifying areas where self-financing remains relevant.
Three levers maintain accessible funding even outside of extensive renovations:
- Energy saving certificates (CEE) remain available for certain isolated gestures, particularly thermal insulation or replacement of inertia radiators
- The eco-PTZ finances up to a bundle of works without resource conditions, provided at least two complementary areas are grouped together
- The date of submission of the file determines the applicable regime, not the date of the quote or the start of the work, which requires anticipating administrative procedures before signing anything
Extensive renovation and heating system: the new conditions of MaPrimeRénov’
MaPrimeRénov’ now excludes homes that retain gas or oil heating after work as part of an extensive renovation. This is no longer just a bonus criterion: it is an eligibility condition.
Specifically, if you are considering a comprehensive renovation of your individual home, replacing the heating system with a decarbonized solution (heat pump, district heating, solar thermal) becomes a prerequisite. The choice of heating system conditions access to aid, not just the amount.
Energy-intensive homes: a limited transitional period
Thermal sieves (labels F and G) still benefit from enhanced support, but this window is gradually closing. We recommend that homeowners of these properties submit their files quickly, as the rules apply to applications submitted from September 1, 2026.
A project started in August with a file submission in October falls under the new regime. This administrative nuance has already trapped households who thought they were covered by the old system.
Ventilation and insulation: why treating them together changes energy performance
Ventilation is no longer an independent comfort equipment in the logic of the new aids. It must be integrated into an extensive renovation project to be subsidized through MaPrimeRénov’.
From a technical point of view, this is coherent. Insulating without properly ventilating degrades indoor air quality and promotes building pathologies (condensation, mold). The opposite, ventilating a poorly insulated home, amounts to heating the outside.
The coupling of insulation and ventilation produces a multiplicative effect on thermal comfort. A double-flow mechanical ventilation system recovers a significant portion of the calories from the extracted air to preheat the incoming fresh air. Combined with high-performance insulation of walls and attics, it allows for maintaining a stable temperature with a more modestly sized heating system.
Which areas to prioritize when the budget is constrained
If extensive renovation is not immediately feasible, we recommend sequencing the work by starting with the building envelope:
- Insulation of lost or sloping attics, an area where the cost-performance ratio remains the most favorable
- Treatment of thermal bridges at wall-floor junctions and around joinery, often neglected in standard quotes
- Installation or replacement of mechanical ventilation, sizing the flows according to the actual volume of the rooms and not according to minimal standards
- Replacement of the domestic hot water production system with a thermodynamic balloon, which remains affordable even without direct aid
Temperature regulation and control: the underestimated lever
Before investing in new equipment, a well-configured programmable thermostat measurably reduces heating consumption. Most existing installations operate with rudimentary, or even non-existent, regulation.
Connected thermostats with remote sensors by room allow for zone-by-zone control. By heating only the occupied rooms to the right temperature during actual occupancy hours, one partially compensates for the losses of a poorly insulated building.
This type of equipment does not require heavy renovation. It can be installed in a few hours on an existing heating circuit, whether it involves electric radiators with pilot wire or a hydraulic network with thermostatic valves.
Air conditioning and summer comfort
Summer comfort is primarily achieved through external solar protection, not through air conditioning. Roller shutters, adjustable sunshades, or external blinds reduce thermal load much more effectively than a split system installed afterward.
When air conditioning is necessary (full west exposure, hot climate zone), a reversible heat pump serves both functions, heating and cooling, and falls within the scope of extensive renovation aids.
The regulatory framework clearly pushes towards integrated projects. Treating insulation, ventilation, heating, and regulation separately no longer makes sense, either technically or financially. Homeowners who structure their project as a coherent whole, even spread over several years, achieve better comfort for a controlled overall budget.
