About Thermasim
Professional thermal compliance consultancy helping UK builders and developers navigate Part O regulations with confidence.
Making Compliance Simple
Thermasim was founded to help builders and developers navigate the complex world of thermal compliance with confidence. When Part O regulations were introduced in 2022, many in the industry were left confused about requirements and unclear on how to achieve compliance.
With a professional background in MEP engineering and extensive experience with IESVE thermal modeling software, I recognized an opportunity to make the compliance process straightforward and stress-free for developers who don't have in-house technical teams.
Today, Thermasim serves builders, developers, and architects across the UK, providing fast, reliable Part O and TM59 assessments that help projects proceed smoothly through Building Control. Our approach combines technical excellence with clear, jargon-free communication.
Qualifications & Expertise
Professional expertise backed by industry-leading tools and in-depth regulatory knowledge
IESVE Expertise
Certified in Integrated Environmental Solutions Virtual Environment, the industry-leading software for dynamic thermal simulation.
Building Regulations Knowledge
In-depth understanding of UK Building Regulations, particularly Part O overheating requirements and compliance pathways.
CIBSE Standards
Thorough knowledge of CIBSE TM59 methodology and best practices for overheating assessment in residential buildings.
MEP Background
Professional background in mechanical, electrical, and plumbing engineering with focus on sustainable building design.
Why Choose Thermasim
What sets us apart in the thermal compliance industry
Fast Turnaround
Most projects completed within 1-2 weeks. Fast-track options available for urgent deadlines.
Clear Communication
No confusing jargon. We explain everything in plain English and keep you informed throughout the process.
Competitive Pricing
Transparent, fair pricing based on project complexity. No hidden fees or unexpected charges.
Expert Guidance
Years of experience with UK regulations. We know what Building Control expects and how to achieve compliance.
Professional Tools & Software
IESVE Software
We use Integrated Environmental Solutions Virtual Environment (IESVE), the industry-leading software for dynamic thermal simulation and building performance analysis.
IESVE's sophisticated modeling capabilities allow us to accurately predict building performance and demonstrate compliance with confidence.
Supporting Tools
- AutoCAD - Technical drawing and plan analysis
- Weather data libraries - UK-specific climate data
- Building Control liaison - Direct communication with authorities
- Documentation systems - Professional report generation
Let's Work Together
Ready to get started on your Part O compliance assessment? Get in touch for a free consultation and quote.