
Energy compliance, HVAC systems and building performance consultancy
TM44, EPC, ESOS and DEC assessments with HVAC and energy performance support

TM44, EPC, ESOS and DEC assessments with HVAC and energy performance support
OptiEnergy Solutions delivers energy compliance reporting, HVAC support, and building performance services across the UK. Led by a Fully Accredited Energy Assessor and qualified HVAC engineer with a background in air conditioning and refrigeration engineering, we provide practical, technically informed solutions based on real-world commercial and industrial experience.
We combine energy compliance expertise with HVAC system knowledge to assess building performance, identify inefficiencies, and deliver clear, practical recommendations. With experience across a wide range of building types, we understand how systems operate in practice and where meaningful improvements can be achieved.
HVAC systems are typically the largest energy consumers in commercial buildings, making compliance and performance optimisation critical to reducing operating costs. This is why our core focus includes TM44 inspections alongside HVAC system support and renewable energy integration.
Where appropriate, we also support clients with wider energy and HVAC solutions, including HVAC optimisation, building controls and BMS optimisation, plant and system performance, energy monitoring strategies, and renewable energy integration, working with trusted specialist partners where required.

At OptiEnergy Solutions, we are committed to helping businesses improve energy efficiency, maintain compliance, and reduce their carbon footprint. Our mission is to provide practical energy assessment services that help clients save money, reduce waste, and improve building performance.

OptiEnergy Solutions delivers energy compliance, HVAC engineering, and building performance services across the UK, helping businesses meet regulatory requirements and improve system performance.
We provide energy compliance assessments including TM44 Air Conditioning Inspections, Commercial EPCs, ESOS, and DEC reporting, alongside HVAC
OptiEnergy Solutions delivers energy compliance, HVAC engineering, and building performance services across the UK, helping businesses meet regulatory requirements and improve system performance.
We provide energy compliance assessments including TM44 Air Conditioning Inspections, Commercial EPCs, ESOS, and DEC reporting, alongside HVAC engineering support such as maintenance, servicing, fault finding, installation support, and technical advice.
We also support energy efficiency and renewable energy solutions, helping clients implement practical improvements that optimise building operations.

We work with a network of trusted specialist partners where required to support the delivery of HVAC, energy compliance, energy efficiency, and renewable energy projects across the UK.
This ensures access to additional expertise where needed and helps deliver compliant, high-quality outcomes for our clients.
All partners are carefully sel
We work with a network of trusted specialist partners where required to support the delivery of HVAC, energy compliance, energy efficiency, and renewable energy projects across the UK.
This ensures access to additional expertise where needed and helps deliver compliant, high-quality outcomes for our clients.
All partners are carefully selected to maintain high standards of workmanship, reliability, and performance.
TM44 Air Conditioning Inspections are a legal requirement for commercial air conditioning systems over 12kW, helping building owners and occupiers comply with energy efficiency regulations. Failure to comply may result in enforcement action and a fixed penalty fine of up to £300 per breach issued by the local authority.
We carry out TM44 inspections across the UK, providing clear, practical reports that highlight system performance, inefficiencies, and improvement opportunities.
With HVAC and refrigeration engineering experience, we assess systems including split units, VRF/VRV, chillers, DX systems, and AHUs.
On site, we typically identify inefficient controls, ageing or oversized equipment, poor scheduling, poorly maintained equipment, and systems operating outside of demand
We also provide clear, actionable recommendations to help clients understand what needs improving and how to address it in practice.
These inspections help reduce energy consumption, improve performance, and ensure compliance with current legislation.
Commercial Energy Performance Certificates (EPCs) are required when selling, leasing, or constructing non-domestic buildings. We provide Commercial EPCs that assess a building's energy efficiency and assign an official energy rating. Alongside the certificate, clients receive practical recommendations to improve performance and reduce operating costs, while ensuring compliance with current regulations.
The Energy Savings Opportunity Scheme (ESOS) is a government requirement for large UK organisations to assess their energy use and identify opportunities for improvement. We carry out ESOS assessments and audits, providing clear, cost-effective recommendations to reduce energy consumption, improve efficiency, and lower carbon emissions, while ensuring full compliance with the scheme.
Display Energy Certificates (DECs) are a legal requirement for public buildings, showing the actual energy usage and performance of a building on an annual basis. We produce and lodge accurate DEC assessments, providing clear ratings and recommendations to help improve energy performance, reduce running costs, and ensure full compliance with current regulations.
To get started, simply send an email stating the service you require along with the building address.
We help businesses improve building performance through practical, data-led energy-saving measures and clear, actionable recommendations.
A key focus of modern building performance is the integration of HVAC systems with renewable technologies, particularly solar PV. As HVAC systems are often among the largest consumers of electricity in commercial buildings, solar PV can help offset demand, reduce operating costs, and support lower-carbon operations.
We support clients in exploring and implementing renewable energy solutions including solar PV, battery storage, EV charging infrastructure, and heat pump technologies, working with trusted specialist partners where required.
By assessing building performance and energy usage, we identify practical opportunities to integrate renewable technologies and optimise both existing and new HVAC systems.
We focus on practical, cost-effective improvements that reduce energy use, operating costs, and carbon emissions, while supporting compliance and long-term building performance.

As a fully qualified HVAC engineer, we offer practical HVAC support across the lifecycle of heating, ventilation, and air conditioning systems, including split systems, VRF/VRV systems, chillers, DX systems, and air handling units (AHUs), helping clients maintain safe, efficient, and reliable building services.

Regular servicing and preventative maintenance help HVAC systems operate efficiently, reliably, and safely. By identifying issues early and optimising system performance, we help reduce energy consumption, lower operating costs, and extend equipment lifespan. As a TM44 Air Conditioning Inspector, this also informs our understanding of common inefficiencies and practical opportunities for system improvement.

We provide fault finding and repair support for a wide range of HVAC systems, identifying issues quickly and recommending effective solutions. Through a systematic approach to diagnostics and troubleshooting, we help restore performance, improve reliability, and minimise disruption to building operations.

We provide installation support and technical guidance for HVAC projects where required, working alongside clients, contractors, and specialist partners. This helps support correct system design, installation, and commissioning, ensuring HVAC systems operate efficiently, reliably, and as intended. Our involvement helps reduce the risk of performance issues, inefficiencies, and avoidable remedial works.

We provide support in line with TR19 standards, ensuring ventilation and ductwork systems are properly inspected and maintained for cleanliness, safety, and performance. This helps reduce fire risk, improve airflow efficiency, and support compliance with recognised industry guidance.
To get started, simply send an email stating the service you require along with the building address.







TM44 Air Conditioning Inspections
“The TM44 inspection was carried out thoroughly and professionally with minimal disruption to our operations. The report was clear, well-structured, and full of practical energy saving recommendations that we’ve already started to implement. Excellent service and valuable advice that’s helping us reduce energy costs.”
- Facilities Manager ⭐⭐⭐⭐⭐
Commercial EPCs
“Professional, efficient, and incredibly helpful throughout the whole process. The EPC was delivered promptly and the energy efficiency advice provided was clear and actionable. It’s given us a much better understanding of our building’s performance and how we can improve it. Highly recommended.”
- Hotel Manager ⭐⭐⭐⭐⭐
HVAC Service & Maintenance
“Reliable, knowledgeable, and always go the extra mile. Their maintenance visits keep our systems running efficiently and issues are picked up early before they become problems. The energy saving advice they provide is practical and has made a real difference to our site. A great team to work with.”
- Site Lead Engineer ⭐⭐⭐⭐⭐
Please reach us at info@optienergysolutions.co.uk if you cannot find an answer to your question.
We provide HVAC, energy compliance, and building performance services across the UK. This includes TM44 Air Conditioning Inspections, Commercial EPCs, ESOS, and DEC assessments, along with HVAC maintenance, servicing, fault finding, installation support, and technical advice.
We also support clients with wider energy efficiency and renewable energy solutions through trusted specialist partners where required, helping improve building performance, reduce operating costs, and ensure regulatory compliance.
A TM44 inspection is a UK-required energy assessment for air conditioning systems over 12kW. If you are not compliant, you can be fined by the local authority (currently up to £300 per breach) and may be required to complete the inspection. There are also discussions about increasing penalties to around £800 in future updates to enforcement rules.
Turnaround times depend on the size and complexity of the site, but I aim to schedule assessments promptly and deliver clear, accurate reports as quickly as possible. I always work efficiently to minimise disruption and ensure clients receive the information they need without unnecessary delay.
TM44 inspections are required every 5 years for air conditioning systems with a cooling capacity above 12 kW
Yes. All inspections and reports are carried out in line with current UK regulations and industry standards. I ensure all documentation is accurate, up to date, and fully compliant, giving clients confidence that their legal obligations are being met.
HVAC systems are typically one of the largest consumers of electricity in commercial buildings. Even highly efficient systems can require significant amounts of power to provide heating, cooling, and ventilation throughout the year. By integrating HVAC systems with solar PV, businesses can offset a proportion of this electricity demand using on-site renewable generation, helping to reduce operating costs, lower carbon emissions, and improve overall energy performance.
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