Company lists · Data refreshed September 2026

Top 19 Weatherization contractors based in Sweden

RevenueBase identified 38 weatherization contractors headquartered in Sweden as of September 2026 and tracks 357 professional contacts across them, including 173 with verified work emails. Borlange is the largest hub.

This list covers weatherization contractors headquartered in Sweden, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 19, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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 HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 19, 2026 86% judged on-target in blind review
38Companies
357Contacts tracked
173Verified emails
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The 19 largest weatherization contractors based in Sweden

Ranked by team size
Top 19 of 38 weatherization contractors based in Sweden, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to weatherization contractors: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Indirect evidenceBorlänge, SwedenHQ checked Sep 19, 202651-20074 contacts →

Indirect evidence

“Isolerab AB erbjuder villaägare en helhetslösning för ett friskare inomhusklimat och lägre energikostnader; Tilläggsisolering, Ventilation och Mögelbehandling.”

Source: RevenueBase Database · checked Sep 19, 2026
2Indirect evidenceKarlstad, SwedenHQ checked Sep 19, 202651-20054 contacts →

Indirect evidence

“Vi på LG Contracting älska att skapa smarta energilösningar inom värme och sanitet så att du kan trivas och må bra, vare sig det gäller i hemmet eller på jobbet.”

Source: RevenueBase Database · checked Sep 19, 2026
3Indirect evidenceGävle, SwedenHQ checked Sep 19, 202611-5028 contacts →

Indirect evidence

“Vi på Solar Energy Group gör det enkelt att investera i en mer hållbar framtid.”

Source: RevenueBase Database · checked Sep 19, 2026
4Indirect evidenceTäby, SwedenHQ checked Sep 19, 202651-20026 contacts →

Indirect evidence

“ENIVA Isolerproffs erbjuder energieffektiva lösningar för företag, organisationer och privatpersoner.”

Source: RevenueBase Database · checked Sep 19, 2026
5Indirect evidenceHjo, SwedenHQ checked Sep 19, 20261,001-5,00024 contacts →

Indirect evidence

“Hjo Installation är lokala installationsföretag inom energioptimering, el, VS och ventilation.”

Source: RevenueBase Database · checked Sep 19, 2026
6Indirect evidenceKarlstad, SwedenHQ checked Sep 19, 202611-5020 contacts →

Indirect evidence

“Vi erbjuder ägare och förvaltare av fastigheter en prisvärd helhetslösning när det gäller energi- och bullerisolering av befintliga fönster, för att snabbt och effektivt minska…”

Source: RevenueBase Database · checked Sep 19, 2026
7Indirect evidenceSundsvall, SwedenHQ checked Sep 19, 202611-5013 contacts →

Indirect evidence

“Vi hjälper hundratals hushåll varje år att byta fönster och installera solceller med våra kunniga lokala montörer.”

Source: RevenueBase Database · checked Sep 19, 2026
8Indirect evidenceUpplands Vasby Stockholm, SwedenHQ checked Sep 19, 202611-5010 contacts →

Indirect evidence

“Isoleringslandslaget startades med visionen att hjälpa våra kunder att spara pengar genom att sänka sina uppvärmningskostnader.”

Source: RevenueBase Database · checked Sep 19, 2026
9Indirect evidenceMalmö, SwedenHQ checked Sep 19, 202611-5010 contacts →

Indirect evidence

“Vi hjälper fastighetsägare att skapa friskare inomhusklimat, sänka sina driftkostnader och lämna ett mindre klimatavtryck.”

Source: RevenueBase Database · checked Sep 19, 2026
10Indirect evidenceAlingsås, SwedenHQ checked Sep 19, 202611-507 contacts →

Indirect evidence

“På Takbyrån utför vi alla storlekar av takentreprenader med isolering och tätskikt.”

Source: RevenueBase Database · checked Sep 19, 2026
11Indirect evidenceVårby, SwedenHQ checked Sep 19, 20261-105 contacts →

Indirect evidence

“Välkomna till Stockholm Lösull!”

Source: RevenueBase Database · checked Sep 19, 2026
12Indirect evidenceLinköping, SwedenHQ checked Sep 19, 202611-505 contacts →

Indirect evidence

“Vi är ett installations- och serviceföretag i Linköping med fokus mot energi, servicelösningar & entreprenad.”

Source: RevenueBase Database · checked Sep 19, 2026
13Indirect evidenceBorås, SwedenHQ checked Sep 19, 202611-504 contacts →

Indirect evidence

“Värme- och sanitetsarbeten”

Source: RevenueBase Database · checked Sep 19, 2026
14Indirect evidenceBorlänge, SwedenHQ checked Sep 19, 202611-504 contacts →

Indirect evidence

“Vi som driver Dalalaget har lång och gedigen erfarenhet av fönsterbyten i bostadsrättsföreningar och flerbostadshus.”

Source: RevenueBase Database · checked Sep 19, 2026
15Indirect evidenceHelsingborg, SwedenHQ checked Sep 19, 20261-104 contacts →

Indirect evidence

“Driftoptimering I Sverige AB Vi levererar energieffektiva helhetslösningar för en trygg och säker fastighetsdrift.”

Source: RevenueBase Database · checked Sep 19, 2026
16Indirect evidenceLandvetter, SwedenHQ checked Sep 19, 202611-503 contacts →

Indirect evidence

“Thermo-Logic is a dynamic, innovative and service-minded company mainly focusing on optimizing energy costs and maintenance by Cool Roofing, Technical Insulation Solutions and…”

Source: RevenueBase Database · checked Sep 19, 2026
17Indirect evidenceEskilstuna, SwedenHQ checked Sep 19, 202611-503 contacts →

Indirect evidence

“Fönsterrenovering och energioptimering av dina fönster.”

Source: RevenueBase Database · checked Sep 19, 2026
18Indirect evidenceArlandastad, SwedenHQ checked Sep 19, 20261-102 contacts →

Indirect evidence

“Materialförsäljning och entreprenad vad gäller tätskikt och isolering för yttertak”

Source: RevenueBase Database · checked Sep 19, 2026
19Indirect evidenceStockholm, SwedenHQ checked Sep 19, 20261-101 contacts →

Indirect evidence

“Vvs-konstruktion -besiktning - installationssamordning -”

Source: RevenueBase Database · checked Sep 19, 2026

Showing 19 of 38 weatherization contractors based in Sweden

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Weatherization contractors based in Sweden at a glance

As of Sep 19, 2026
48.5%Verified-email coverage
9.4Average contacts per company
11-50Median size (employees)
13.2%Largest-city concentration · Borlange
Sep 19, 2026Page data refreshed

Companies by employee count

1-10
16
11-50
15
51-200
6
1,001-5,000
1

Email recency for this list is measured worldwide rather than for Sweden, so it is reported there. Company counts and contact totals on this page are exact for Sweden, over 38 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among weatherization contractors, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies
Companies headquartered in Sweden whose own description of what they do matches “weatherization contractors”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search
RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names weatherization contractors), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude
Companies whose own description does not clearly place them among weatherization contractors, and records with no verified work email. Companies headquartered outside Sweden are excluded even when they keep an office there.
Match quality
In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
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 listed company carries at least one verified work email, 173 across the full list. 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 19, 2026. Lists refresh periodically as the graph is re-checked.
Corrections
Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names weatherization contractors, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many weatherization contractors are there based in Sweden?

RevenueBase identified 38 weatherization contractors headquartered in Sweden as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Isolerab AB, headquartered in Borlange, tops this list with the largest team on record.

Which city has the most weatherization contractors?

Borlange leads with 5 headquartered companies, followed by Helsingborg (2) and Karlstad (2).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 173 verified decision-maker contacts tracked across these 38 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 19, 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 Smart Search, 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.