Company lists · Data refreshed September 2026

Top 25 Retrofit contractors based in Spain

Name: Retrofit contractors based in Spain
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 397 companies tracked

RevenueBase identified 397 company matches for retrofit contractors associated with Spain as of September 2026 and tracks 1,733 professional contacts across them, including 128 with verified work emails. Madrid is the largest hub.

This list covers company matches for retrofit contractors associated with Spain, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 17, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list RevenueBase SmartSearch · Exact Recorded Sep 17, 2026 How this list was built

397Companies

1,733Contacts tracked

128Verified emails

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The 25 largest retrofit contractors based in Spain

Ranked by team size

Top 25 of 397 company matches for retrofit contractors based in Spain, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 17, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Isolana	Exact match	L'hospitalet De Llobregat, SpainHQ recorded Sep 17, 2026	201-500	117 contacts →
	Exact match “es una de las empresas líderes en el mercado español especializada en soluciones de aislamiento térmico, acústico y eficiencia energética para la construcción.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
2	NESS	Exact match	Madrid, SpainHQ recorded Sep 17, 2026	11-50	81 contacts →
	Exact match “NESS, empresa de servicios energéticos especializada en la gestión y ahorro energético.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
3	Vivendio Grupo Aconser	Exact match	Granada, SpainHQ recorded Sep 17, 2026	51-200	73 contacts →
	Exact match “En Vivendio, empresa perteneciente a Grupo Aconser, nos dedicamos a la eficiencia y rehabilitación energética.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
4	Cambioenergetico	Exact match	Coria, SpainHQ recorded Sep 17, 2026	51-200	42 contacts →
	Exact match “Especialistas en ahorro energético y eficiencia energética.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
5	Huurre Iberica	Exact match	Cassà De La Selva, SpainHQ recorded Sep 17, 2026	51-200	40 contacts →
	Exact match “Industrial insulating panels for efficient and sustainable buildings” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
6	EDA Instalaciones Y Energía S.L	Exact match	Badalona, SpainHQ recorded Sep 17, 2026	51-200	29 contacts →
	Exact match “EDA Instalaciones y Energía S.L, es una empresa con amplia experiencia en el sector de las instalaciones integrales, mantenimientos y estudios de eficiencia energética.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
7	Inergy	Exact match	Barcelona, SpainHQ recorded Sep 17, 2026	11-50	29 contacts →
	Exact match “Inergy tiene como misión contribuir al ahorro energético de sus clientes, reduciendo su factura energética, y favoreciendo al mismo tiempo la mitigación del cambio climático.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
8	Prointer Proyectos E Instalaciones Térmicas S.L	Exact match	Elche, SpainHQ recorded Sep 17, 2026	11-50	28 contacts →
	Exact match “Prointer es la empresa líder en el estudio y diseño de los sistemas más avanzados de climatización y refrigeración.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
9	Fongascal	Exact match	Bétera, SpainHQ recorded Sep 17, 2026	11-50	22 contacts →
	Exact match “FONGASCAL SL es una ingeniería con más de 20 años de experiencia en el sector de las instalaciones mecánicas y el mantenimiento de edificios.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
10	Tasco Construccio	Exact match	Barcelona, SpainHQ recorded Sep 17, 2026	11-50	20 contacts →
	Exact match “Empresa formada por un equipo directivo con más de 20 años de experiencia avalable en el sector.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
11	RELSA	Exact match	Sabadell, SpainHQ recorded Sep 17, 2026	11-50	17 contacts →
	Exact match “Más de 50 años aportando valor a nuestros clientes.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
12	Juan DE Dios Climatizacion SL	Exact match	Molina De Segura, SpainHQ recorded Sep 17, 2026	11-50	16 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
13	Ahorrenergia	Exact match	Madrid, SpainHQ recorded Sep 17, 2026	51-200	16 contacts →
	Exact match “Ahorrenergía es un grupo formado por profesionales del sector energético, tecnológico y financiero, comprometido con la Eficiencia Energética, Medio Ambiente y Ahorro Sostenible…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
14	Grupo Renovak Building Company	Exact match	Alicante, SpainHQ recorded Sep 17, 2026	11-50	15 contacts →
	Exact match “Empresa de rehabilitación, construcción, reformas y reparación de edificios y viviendas en Alicante y Elche.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
15	Amexsol	Exact match	Mérida, SpainHQ recorded Sep 17, 2026	51-200	15 contacts →
	Exact match “Aislamientos y Mantenimientos Extremadura” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
16	Estelec Instalaciones Integrales, SL	Exact match	Sabadell, SpainHQ recorded Sep 17, 2026	11-50	9 contacts →
	Exact match “Estelec centra su actividad en las Instalaciones integrales de edificios, locales e industria.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
17	Davofrio Ingeniería DE Climatización H.V.A.C R	Exact match	San Vicente Del Raspeig 53, SpainHQ recorded Sep 17, 2026	11-50	9 contacts →
	Exact match “Un cerrajero y su hijo de 17 años montando aires acondicionados con un Ford Mondeo.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
18	Soren Energia SL	Exact match	Barcelona, SpainHQ recorded Sep 17, 2026	1-10	9 contacts →
	Exact match “SOREN Energia és una Empresa de Serveis Energètics (ESE).” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
19	Espacius S.L.P	Exact match	Murcia, SpainHQ recorded Sep 17, 2026	11-50	8 contacts →
	Exact match “Nos sentimos entusiasmados por la arquitectura sostenible y respetuosa con el medio ambiente.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
20	Sunthalpy Engineering	Exact match	Oviedo, SpainHQ recorded Sep 17, 2026	1-10	8 contacts →
	Exact match “Sunthalpy es una ingeniería que ha creado la vida sostenible que es simplemente mejor en todos los sentidos.+ Economía, gracias a ahorros superiores al 90% y revalorización de los…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
21	Diaterm Distribucions	Exact match	Sant Quirze Del Vallés, SpainHQ recorded Sep 17, 2026	11-50	7 contacts →
	Exact match “Hace ya más de treinta y cinco años que nos dedicamos a la distribución y asesoramiento de aislamientos para la construcción, la industria y la rehabilitación de edificios.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
22	Fama Rehabilitaciones	Exact match	Elche/elx, SpainHQ recorded Sep 17, 2026	11-50	7 contacts →
	Exact match “Somos una empresa de construcción ubicada en Elche, especializada en edificaciones, rehabilitaciones integrales, estructurales y mejoras de eficiencia energética.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
23	Homegreeners	Exact match	Colmenar Viejo, SpainHQ recorded Sep 17, 2026	1-10	7 contacts →
	Exact match “Nuestra plataforma tecnológica revoluciona el proceso de rehabilitación energética de hogares.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
24	Garcíarama	Exact match	Gijón, SpainHQ recorded Sep 17, 2026	11-50	6 contacts →
	Exact match “GarcíaRama es una empresa constructora asturiana, con más de 30 años de experiencia, líder en la Rehabilitación Eficiente de Edificios.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
25	Ingeman	Exact match	Ansoain, SpainHQ recorded Sep 17, 2026	11-50	6 contacts →
	Exact match “Somos especialistas en la prestación de servicios generales a empresas y particulares en las actividades de : Reformas y Rehabilitaciones, Instalaciones Eléctricas, Fontanería y…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “retrofit contractors”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 397 retrofit contractors based in Spain

See the full list, filter by size, metro and specialty, and access 128 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Retrofit contractors based in Spain at a glance

As of Sep 17, 2026

7.4%Verified-email coverage

4.4Average contacts per company

1-10Median size (employees)

13.1%Largest-city concentration · Madrid

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

224

11-50

143

51-200

201-500

501-1,000

Email recency for this list is measured worldwide rather than for Spain, so it is reported there. Company counts and contact totals on this page are exact for Spain, over 397 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies: Company records associated with Spain whose business descriptions match “retrofit contractors” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch: Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview: The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality: RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
Ranking: Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification: Every displayed company carries at least one verified work email. RevenueBase tracks 128 professional contacts with verified work emails across the full matched dataset. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh: This page's figures were pulled from the company graph on September 17, 2026. Lists refresh periodically as the graph is re-checked.
Record context: Company records and descriptions can change. Check the company's website for its current services and locations.

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “retrofit contractors”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many retrofit contractors are there based in Spain?

RevenueBase identified 397 company matches for retrofit contractors associated with Spain as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Isolana tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most retrofit contractors?

Madrid leads with 52 company records, followed by Barcelona (24) and Valencia (9).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 128 professional contacts with verified work emails tracked across these 397 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 17, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.