Thermcal
Based in Castlewellan, Co. Down · Covers Northern Ireland and UK marketsAccreditation stated by provider: Stroma Certified Energy Assessor, Elmhurst Energy Accredited Member, IATS ApprovedNot yet claimed
Own website
Services
| Service | Regulation | Price |
|---|---|---|
| SAP calculations | Part L | Ask for a quote |
| On-construction EPC | Part L | Ask for a quote |
| Domestic EPC | EPC | Ask for a quote |
| Commercial EPC | EPC | Ask for a quote |
| Air tightness testing | Part L | Ask for a quote |
Services listed on Signed Off. The provider may offer others.
About
Energy assessment firm in Castlewellan, Co. Down, producing SAP calculations for new dwellings under Part F of the Northern Ireland Building Regulations. Also lists EPCs, SBEM, air tightness testing and thermal imaging surveys.
Details taken from the provider’s own website on 12 October 2026.
What we’ve checked, and what we haven’t
AccreditationStated by the provider: Stroma Certified Energy Assessor, Elmhurst Energy Accredited Member, IATS Approved. Not yet checked by us.
Company statusLimited company, as the firm describes itself. We haven’t checked Companies House.
InsuranceNot yet checked. Ask to see professional indemnity insurance before you book.
Areas covered
Covers Northern Ireland and UK markets
Northern Ireland
Compare other providers
SAP calculations in Northern IrelandOn-construction EPC in Northern IrelandDomestic EPC in Northern IrelandCommercial EPC in Northern IrelandAir tightness testing in Northern Ireland