If the radiator is still heating poorly after bleeding, there are other more serious potential causes. The first is sludge build-up. Over the years, the water in the heating circuit generates oxides and mineral deposits that settle in the radiators, especially at the bottom. This sludge reduces the effective water flow area and creates cold spots. The solution is a chemical flush of the entire circuit using a specific descaling product, introduced with the boiler off and circulated for a few hours. The system is completely drained before refilling with new water treated with a corrosion inhibitor. Call us, message us on WhatsApp, or request your quote online – we'll reply in under 10 minutes during business hours. Call us, message us on WhatsApp, or request your quote online – we'll reply in under 10 minutes during business hours.

For apartments with a centralised community boiler, the combination of thermostatic heads and individual consumption meters allows you to pay only for the heating consumed by each dwelling, which is much fairer than proportional distribution by surface area used when there are no meters. This is a mandatory upgrade in many communities due to European regulations. A very cost-effective upgrade is to install thermostatic heads on each radiator. Each room has its own independent temperature control, allowing different temperatures according to use (e.g., warmer in the living room when occupied, cooler in an unused guest room) and saving energy without losing comfort. Installation is straightforward when radiators already have conventional valves: we replace the manual head with a thermostatic one. Deep cleaning of the heating circuit water with a specific descaler to remove sludge and oxides. This is done every 7-10 years or when persistent cold spots occur.

Low-water content aluminium radiators are the most efficient for most modern installations. They heat up and cool down quickly and allow for precise hourly programming without sacrificing comfort. Tubular panel steel radiators are a common alternative with good value for money. For bathrooms, we recommend towel warmer radiators that combine room heating with towel drying. Annual gas boiler maintenance typically ranges from €90 to €130, including the certificate. Simple breakdown repair (sensor, valve, pressure switch) costs €80-€180 plus parts. A complete replacement of a natural gas boiler with a condensing model costs €1,400 including installation, depending on the brand and power. Electric underfloor heating for a 90 m² home costs around €4,000 with zone thermostats. We replace individual new radiators for €80-€180 each, depending on size and model. A programmable thermostat with installation costs €120-€280, depending on the brand.

The price for annual maintenance in L'Antiga Esquerra de l'Eixample typically ranges between €160 and €4,165. The final amount depends on the property's condition, materials, and time spent. We always provide a fixed quote before starting. A complete aerothermal installation is a significant project. It begins with calculating the home's thermal loads, sizing the equipment according to actual needs, choosing between radiators only, underfloor heating only, or a combination, planning space for the domestic hot water tank and outdoor unit, and providing a fixed quote. Call us, message us on WhatsApp, or request your quote online – we'll reply in under 10 minutes during business hours.