Wednesday, July 15, 2026
How to Improve a Home's Energy Performance Certificate
The energy performance certificate has become a key element in the Spanish real estate market, not only because it is mandatory for buying, selling, or renting, but also because it directly influences a home's value and its long-term energy efficiency.
Improving a property's energy rating involves reducing energy consumption and increasing its efficiency. One of the most effective first steps is to improve thermal insulation. Installing double- or triple-glazed windows, reinforcing walls, or improving insulation in roofs and floors can significantly reduce energy loss.
Another important aspect is updating heating and cooling systems. Replacing old boilers with more efficient systems, such as air source heat pumps or heat pumps, improves energy performance and reduces monthly consumption. Furthermore, using smart thermostats helps optimize heating and air conditioning use.
Lighting also plays a significant role. Replacing traditional light bulbs with LED technology is a simple but effective measure that improves the overall efficiency of the property. Although its individual impact is smaller, it contributes to the final rating. The use of renewable energy is another key factor. Installing solar panels can significantly improve the energy rating, especially in single-family homes or buildings with good sun exposure.
In addition to energy savings, improving efficiency has a direct impact on market value. Homes with better certifications are more attractive to buyers and renters, as they imply lower monthly costs and greater sustainability.
In a market where energy efficiency is gaining importance as a decision criterion, improving this aspect can make the difference between selling quickly or being priced out of the market.
At Immosegur, we are seeing a growing demand for advice on energy retrofitting, as many homeowners are looking not only to comply with regulations but also to increase the value of their property.
Improving the energy certificate is not just a technical matter, but a strategic investment that influences both the comfort and profitability of the property.