Thermal load calculation
Each room calculated separately. Eixample classic flats with single-glazed windows on the patio side need different sizing from the street-side rooms. We do the maths first.
Heating · RITE-compliant · Eixample · Sarrià · Maresme villas
Heat pumps, gas boilers, underfloor heating and radiator systems for apartments and villas in Barcelona. Thermal load calculated room-by-room, hydraulics balanced at commissioning, RITE certificate signed at handover. Dani runs the install and signs every certificate.
HEAT PUMP · EIXAMPLE · 2025
Sized first, installed second
Heating systems fail when oversized, undersized or unbalanced. We calculate the thermal load room by room (window U-values, wall composition, floor type, exposure), pick equipment to match, then balance the hydraulics at commissioning. RITE certificate goes in the handover pack.
Each room calculated separately. Eixample classic flats with single-glazed windows on the patio side need different sizing from the street-side rooms. We do the maths first.
Heat pump for new builds and renovations targeting low energy bills. Gas boiler when there is an existing flue and tighter budget. Hybrid setup for villas. We model both before recommending.
Underfloor heating for new builds and full-reform flats — slower response, more comfort. Radiators for retrofit where floor build-up cannot rise. Mixed system in larger villas.
Spanish RITE code (Reglamento de Instalaciones Térmicas en Edificios) requires certification on every install. Dani signs at commissioning — what you need for sale, insurance and any future inspection.
Heating quote · 5 questions, 1 minute
Five questions and Dani runs the thermal load calculation. Fixed-price quote within 5 working days, sized to your property, with RITE certificate included at install.
Two install paths
Gas combi boiler with radiator distribution. Right for retrofit in flats with existing gas line, smaller villas with budget constraints. Hot water (ACS) included from the same boiler. Cheapest path to a working heating system.

How we work · 4 stages
Half a day on site. Measure rooms, check window U-values, walls, floors, exposure. Run the thermal load calculation per room. Output: heating capacity needed and equipment shortlist.
Within 5 working days. Equipment, pipework, distribution, smart thermostats, RITE filing fees, line by line. You approve before any work proceeds.
3–12 days on site depending on scope. Pipework first, equipment second, pressure-tested before walls or floors close. Hydraulic balancing at commissioning to make sure every room hits design temp.
Certificate signed at commissioning. You get the manual, warranty registrations, balancing report, smart-thermostat setup. We answer questions for the first heating season.
Common heating questions
Free first consultation
Send your address, the property size, and what you have in mind. Dani schedules the site visit, runs the load calc, and sends a fixed-price quote within 5 working days.