HDSgreentech Ltd

HDSgreentech Ltd HDSgreentech specialise in helping building design and construction teams meet their energy, carbon and BREEAM targets.

We can validate design and provide the advice using an experienced consultants and the latest 3D thermal modelling techniques. Vision - To deliver a better built environment experience with integrity at its core. Mission - To provide sustainable building solutions for everyone, that lessens environmental impact and waste. HDSgreentech offers the construction industry an accredited and rigorous bui

lding simulation and design advice service with over 30 years experience. We provide our clients with the right advice at the right time, backed by detailed simulation and calculation. We give close attention to simple, low cost and effective design features and firmly believe we can offer benefits to all projects, large and small alike. Our simulation services not only inform and validate building designs, but also ensure projects are engineered specifically to meet the brief, without the over-engineering that so often occurs. Examples of the latter include reducing the need for overly complicated and expensive building services.

🔍 Digging deep: performance through passive designWorking entirely below ground level poses challenges for ventilation, ...
13/08/2025

🔍 Digging deep: performance through passive design

Working entirely below ground level poses challenges for ventilation, moisture control, and thermal regulation. Our role? To use the mass of the building itself to regulate internal conditions and keep energy use to a minimum.

Through detailed thermal modelling and moisture risk assessments, we help optimise:
✅ Passive heat retention and dissipation
✅ Night-purge ventilation strategies
✅ Material selection to stabilise humidity
✅ Layout planning to enhance thermal zoning

The result? A resilient, low-energy space that works with the earth – not against it.
This is building performance, below the surface.

👉 If you're working on an unconventional or performance-driven project, let's talk early-stage modelling, passive strategies, and performance-led design.
Email [email protected]
Call 07738946988
Visit https://www.hdsgreentech.co.uk/projects.asp

08/08/2025

🌞 Designing for daylight in community spaces

When it comes to community buildings such as libraries, halls, hubs, and youth centres, daylight isn’t just a nice-to-have. It’s central to wellbeing, functionality, and long-term sustainability.

But designing for good daylight isn’t always straightforward. We regularly support building specialists such as architects and mechanical engineers with:
• Balancing daylight factors with overheating risks
• Rooflight and clerestory modelling
• Integrating daylight design with passive thermal strategies
• Meeting Part O and TM52 compliance

Community buildings often operate on tight budgets and serve a diverse range of users. That makes daylight modelling at the concept stage vital to avoid costly retrofits or sub-optimal performance.

A well-daylit space lifts the mood, reduces energy bills, and performs all year round.

👉 Planning a new community project? Let’s model early and design with light in mind.
Email [email protected]
Call 07738946988
Visit https://www.hdsgreentech.co.uk/

🏢 EPCs for complex spacesFrom retail units to garden centres, every commercial building needs a valid Energy Performance...
30/07/2025

🏢 EPCs for complex spaces

From retail units to garden centres, every commercial building needs a valid Energy Performance Certificate (EPC), but some spaces are more complex to certify than others.

Take Brambridge Garden Centre as an example: with a mix of retail, office, and greenhouse-style spaces, understanding the energy performance across different zones was key to staying compliant and planning future improvements.

We offer a fully accredited EPC service across England and Wales, led by Damian, a Level 5 Low Carbon Energy Assessor qualified to assess any non-domestic building, including complex and large-scale sites.

Whether you're preparing for sale, lease, or refurbishment, a high-quality EPC can help you stay ahead of regulations and support smarter energy decisions.

Email [email protected]
Call 07738946988
Visit https://www.hdsgreentech.co.uk/services.asp

🌞 Supporting restoration through daylight analysis at Weyhill FairThe historic Weyhill Fairground has been thoughtfully ...
23/07/2025

🌞 Supporting restoration through daylight analysis at Weyhill Fair

The historic Weyhill Fairground has been thoughtfully restored in recent years, evolving into a vibrant community space with craft studios, independent shops, beauty therapists, a tea room, and a well-used community hall.

To take this step in its regeneration, a planning application was needed which included an overshadowing report.

Why?
☑️ To ensure that the proposed works wouldn’t negatively affect light to existing buildings or open spaces
☑️ To provide objective, technical evidence for planners and the local community
☑️ To support sensitive development that respects the site’s heritage and vitality

In a place where community and character matter so much, getting the detail right is essential. We were proud to help enable the next stage of Weyhill Fair’s renewal.

If you are involved in a project where you want to not only ensure that your planning application is thorough but also that you’re respecting the environment and the people within it, get in touch.
Email [email protected]
Call 07738946988
Visit https://www.hdsgreentech.co.uk/

For more information about Weyhill Fairground visit https://www.fairgroundcraft.co.uk

🏗️ L2 2021: Balancing carbon and primary energyUnder the updated Part L, carbon factors and primary energy factors don’t...
16/07/2025

🏗️ L2 2021: Balancing carbon and primary energy

Under the updated Part L, carbon factors and primary energy factors don’t always pull in the same direction.

⚡ Carbon factors now favour electric-based heating systems, especially heat pumps, thanks to the cleaner UK grid.

⚠️ But primary energy factors still penalise direct electric heating, due to the losses in generation and transmission.

That means designs relying on electric systems can pass carbon targets but still fail on primary energy, especially with poor fabric or inefficient controls.

If you’re involved in the design of commercial buildings, we will help you navigate this balance early on, using performance modelling to maximise building energy efficiency and compliance, and avoiding last-minute compromises.

Email [email protected]
Call 07738946988
Visit https://www.hdsgreentech.co.uk/

🌱✨ Year 10 Work Experience Highlights ✨🌱This week, we had the pleasure of welcoming our Year 10 work experience student,...
09/07/2025

🌱✨ Year 10 Work Experience Highlights ✨🌱

This week, we had the pleasure of welcoming our Year 10 work experience student, Ava — who threw herself into a full and varied programme with curiosity, attention to detail and a great sense of professionalism.

📁 From assisting with general office duties to shadowing our team on current projects, no task was too big or too small.

🏢 On the technical side, she gained valuable insights into building sustainability, focusing on Part L (energy efficiency) and Part O (overheating mitigation)—two essential pieces of the puzzle for designing smarter, greener spaces.

💛 A standout moment was a visit to the inspiring team at Honeypot Children’s Charity, where we learned more about their incredible work supporting young carers.

Huge thanks to Clare who shared her time and expertise throughout the week. It's brilliant to see young people taking their first steps into the world of work—especially when they do it with such thoughtfulness and enthusiasm.

✨ Today we had the privilege of visiting the incredible team at the Honeypot Children’s Charity 💛Although we didn’t mee...
03/07/2025

✨ Today we had the privilege of visiting the incredible team at the Honeypot Children’s Charity 💛

Although we didn’t meet any of the children during our time there, we were deeply moved by the passion, care, and unwavering dedication of the staff and volunteers. Hearing about the life-changing work Honeypot does to support young carers left us truly inspired.

We’re especially proud that HDSgreentech has been a monthly donor to Honeypot since 2018, supporting their vital mission year after year. It’s an honour to contribute to a cause that uplifts young carers and gives them the time, space, and support every child deserves.

If you’d like to get involved or learn more, visit honeypot.org.uk or call 023 8089 0002 to speak with the team.

To everyone at Honeypot: thank you for opening your doors and sharing your mission with us. Your impact is quiet, powerful, and deeply appreciated.

🏛️ 🏛️ Thermal Comfort in prisons: why standards matterIn England, the design of prison buildings must meet stringent sta...
25/06/2025

🏛️ 🏛️ Thermal Comfort in prisons: why standards matter

In England, the design of prison buildings must meet stringent standards for thermal comfort, a factor crucial not only for health and wellbeing, but also for dignity, safety, and operational efficiency.

MoJ-specific design guides and those such as CIBSE TM52/TM59 help ensure internal environments stay within comfortable temperature ranges year-round, even as we face increasing extremes due to climate change.

But compliance isn’t straightforward. Balancing thermal comfort, security constraints, limited access to operable windows, and complex occupancy patterns requires more than rules of thumb.

That’s where building physics and computational simulation come in.

Using tools like dynamic thermal modelling, and parametric design analysis, we can:
• Optimise insulation, ventilation, and shading strategies
• Predict overheating risk before the first brick is laid
• Demonstrate compliance with MoJ and TM52/TM59 standards
• Support retrofit decisions with data, not guesswork

Designing for justice doesn’t mean compromising on thermal comfort or performance. If you’re working on custodial environments and want to ensure they are designed with precision and purpose, get in touch.

Email [email protected]
Call 07738946988
Visit https://www.hdsgreentech.co.uk/

☀️Limit the impact of solar gain using smarter design ☀️At HDSgreentech, we utilise building physics and computational m...
18/06/2025

☀️Limit the impact of solar gain using smarter design ☀️

At HDSgreentech, we utilise building physics and computational modelling to help you design out excess solar gain and reduce cooling demand.

By managing how much solar energy enters a space, you can:
• Cut reliance on air conditioning
• Downsize HVAC capacity
• Improve overall energy performance

Many designs rely on standard assumptions (e.g. glazing g-value), but we can take this further by:
✅ Simulating real-world performance (not just template values)
✅ Modelling glazing options, shading devices and solar orientation
✅ Identifying which occupied spaces need interventions

This allows you to optimise designs to reduce HVAC loads and costs.

Changes, such as reducing the g-values or adding external shading, can make a huge difference when based on solid modelling, not guesswork.

Let us help you make your new building future-ready and efficient.

Email [email protected]
Call 07738946988
Visit https://www.hdsgreentech.co.uk/

👟 Congratulations to Damian for completing the Copythorne 5k for the second time.“Thanks to the Copythorne Carnival team...
11/06/2025

👟 Congratulations to Damian for completing the Copythorne 5k for the second time.

“Thanks to the Copythorne Carnival team for once again organising a fantastic three days of entertainment and activity to raise funds for the local youth via Stanley’s Own Scouts. We’re proud to have sponsored the event, and running in such a lovely part of our county is always a joy. I’m looking forward to signing up for the 5k again next year.”

Email [email protected]
Call 07738946988
Visit https://www.hdsgreentech.co.uk/

06/06/2025

WE ARE SORRY
ALL CARNIVAL RELATED EVENTS ON SATURDAY 7th JUNE ARE CANCELLED DUE TO THE FORECAST HIGH WINDS AND RAIN

ALL OTHER EVENTS ON SUNDAY AND MONDAY ARE STILL ON

People involved with Saturday will be updated during Friday 6th June

Raffle draw will now take place on Friday 20th June


Race numbers will still be available for collection on Saturday but for a reduced period, 1pm to 3pm at the Scout HQ and on Monday evening 5.30pm to 7pm.

Address

Southampton

Opening Hours

Monday 8:30am - 6pm
Tuesday 8:30am - 6pm
Wednesday 8:30am - 6pm
Thursday 8:30am - 6pm
Friday 8:30am - 5pm

Telephone

+447738946988

Website

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