Start with an honest picture
Your current certificate (certificado de eficiencia energética) shows how the home was assessed and often lists recommended improvements. We combine that with a survey of the roof, walls, windows and existing systems so you know where energy is actually being lost.
Step 1: Keep the heat where you want it
Insulating the roof and walls, and replacing single-glazed windows, reduces how much energy the home needs in the first place. Many older coastal homes were built with little or no insulation, so this is often where the biggest change comes from.
Step 2: Heat and cool efficiently
Swapping old electric heaters, gas boilers or tired air-conditioning units for a modern heat pump (aerotermia) can deliver heating, cooling and hot water from one efficient system — typically producing several units of heat for every unit of electricity.
Step 3: Make your own electricity
Solar panels, with or without a battery, cut the energy the home draws from the grid. On the Costa Blanca and Costa del Sol the sunshine makes this especially effective.
Step 4: Get the home re-certified
Once work is complete, a qualified technician issues a new certificate. Only that technician sets the final rating, so we plan upgrades with the certificate in mind rather than promising a particular letter.
EU rules (Directive 2024/1275) set national targets to cut the energy used by homes by 2030 and 2035, but they do not currently ban the sale or rental of a home because of its rating.
Common questions
Which upgrade improves the rating most?
It depends on the home. Poorly insulated properties usually gain most from insulation and windows; well-built homes with old heating gain most from a heat pump and solar. A survey tells you which applies.
Can I improve the rating before selling?
Yes. Some upgrades, such as solar or a heat pump, can be completed in days. We can help you choose measures that fit your timeline and budget.
Do I need a new certificate after upgrading?
To show the improved rating to buyers or tenants, yes — a technician must issue an updated certificate reflecting the work done.
