Find Insulation Installers Trusted by Homeowners Across Ireland
Compare verified and approved installers, read real homeowner reviews, and get free quotes in less than 30 seconds.
Join 1,700+ homeowners across Ireland who found trusted insulation installers with ISOTHERM
Free service • No obligation • Verified installers
What is Isotherm?
We are Ireland's authority on home insulation and retrofitting, built to bring clarity and trust to the home energy upgrade process.
A Directory of Trusted Installers
Isotherm is Ireland's leading directory connecting homeowners with certified and vetted insulation, ICF, and retrofit professionals.
An Unbiased Comparison Platform
We provide clear, expert guides on different insulation systems and construction methods, empowering you to make informed decisions.
A Hub of Expert Knowledge
Our blog and guides demystify the home energy upgrade process, from understanding SEAI grants to choosing the right materials.
How Isotherm Works
Finding the right installer is as easy as 1, 2, 3.
Search
Use our directory to find installers by location and speciality.
Compare
Review profiles, project galleries, and homeowner reviews.
Connect
Contact installers directly for a no-obligation quote.
Compare Insulation Types
External Insulation
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Attic Insulation
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Internal Insulation
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Floor Insulation
Learn MoreCheck Your SEAI Grant Eligibility
The Irish government offers generous grants of up to €8,000 to make your home warmer and more energy-efficient.
Check Grant EligibilityWhy Homeowners Trust Isotherm
Verified Installers
Every installer is vetted for insurance, certification, and quality of work.
Grant Support
We guide you through the SEAI grant application process to maximize your savings.
Compare Options Easily
Browse installer profiles, project galleries, and insulation systems all in one place.
100% Free Service
Our platform is completely free for homeowners. No fees, no commission.
What Irish Homeowners Say
"Isotherm helped me find the right installer and saved me thousands. My home has never been warmer!"
"The whole process was so simple. I compared three quotes and picked an amazing local company. Highly recommended."
"We were clueless about SEAI grants. Isotherm made it easy to understand and now our heating bills are a fraction of what they were."
Find Trusted Insulation Installers Near You
Free service. No obligation.