Contact
Contact

Commercial & Industrial
Ductwork & Ventilation Contractors

Specialising in design, manufacture, installation, and maintenance, we’re your dedicated partner for mechanical and ventilation services.

With nearly forty years of experience providing high-quality services to the commercial and industrial sectors, it’s easy to see why we’re the mechanical building services, ductwork & ventilation contractors that businesses trust.

Our Services
Contact
  • YOUR FULL-SERVICE MECHANICAL CONTRACTOR

Experienced, Reliable, Family Owned

Established in 1988 and based in Guildford, our team has a combined experience of over 350 years in the ventilation industry.

Offering in-house manufacturing and bespoke design solutions, we pride ourselves on our extensive skillset, dedication to customer care, and ability to always go the extra mile for our valued clients.

About Us
Contact
  • THE MECHANICAL SERVICE CONTRACTOR THAT CAN DO IT ALL

We
 Design Manufacture Supply Install Maintain Repair
Ductwork and
Ventilation Systems

When you’re considering a new or upgraded ductwork or ventilation system for your building, you often need to rely on multiple companies at different steps of the process.

At Advent Ductwork Systems, we handle everything for you, from design and manufacture to maintenance and repair.. This means peace of mind for you and the reassurance that we know your system inside out.

Our team don’t stop there, we offer a range of mechanical services for a trouble-free installation.

Contact
Design

Our in-house design engineers will design your system to your exact specifications, taking your building, business and needs into account. Once laid out, our CAD specialists will provide detailed drawings and specifications for your project.

We manufacture all types of ductwork and sheet metal products in our on-site, state-of-the-art warehouse, compliant with DW/144 standards.

We deliver your products directly to your door, ready to install in your building.

Our skilled team of engineers will install your ductwork or ventilation system, ensuring minimal disruption and clear and consistent communication.

Every project is completed with a system test and balancing, ensuring optimum operation.

We offer planned preventative and reactive maintenance to ensure your system stays reliable, efficient, and compliant.

If there’s an issue, our engineers will visit your site to fix it. We also offer an emergency call-out service to make your building safe.

Our
Services

Our Services

Whether you need a complete installation or a scheduled maintenance plan, we can handle it for you quickly, efficiently, and reliably.

Find out more about the services we offer and why we’re the mechanical services contractor of choice across the South of England.

Ductwork
Services

Ductwork Services

We design, supply, install, and maintain all types of ductwork systems, including FCU, AHU, MHVR, and LEV.

Find Out More

Planned Preventative
Maintenance

Planned Preventative Maintenance

We offer scheduled planned preventative maintenance to keep your system optimised and cost-effective, reducing the risk of downtime.

Find Out More

Reactive
Maintenance

Reactive Maintenance

If there’s a problem with a piece of equipment or asset, we will quickly assess the issue and restore it to a working condition.

Find Out More

Ventilation
Services

Ventilation Services

We design, supply, install, and maintain all types of ventilation systems, including for kitchens, schools, hospitals, and care homes.

Find Out More

Ventilation
Maintenance

Ventilation Maintenance

We offer planned preventive maintenance and reactive maintenance, recommending the maintenance plan that is best for your system and your budget.

Find Out More

Ventilation
Testing

Ventilation Testing

We provide a range of tests and reporting measures to optimise and validate your system, including pressure and volume testing.

Find Out More

Ventilation
Repair

Ventilation Repair

If your ventilation system breaks down, our engineers will be on site as quickly as possible to fix it.

Find Out More

Testimonials

"We are so pleased to find a company that was conscientious, responded quickly, and was able to help us from the design stage, project completion, through to ongoing maintenance. It is not unusual for them to get a kitchen back up and running the same day, which is crucial when working in care homes and commercial kitchens, for example.’
Kitchen Catering Company
‘It was so great to find a fellow family run business who were very knowledgeable and able to effortlessly help us resolve our extraction issues.’
Restaurant, London
‘Since employing Advent Maintenance we have saved enough on repairs and breakdowns to install new systems. They carry out planned preventive and reactive maintenance timely and efficiently and have a team of experienced engineers.’
Materials supplier
“From initial concept to final commissioning, the team demonstrated outstanding technical knowledge and attention to detail. The bespoke ventilation system they designed and manufactured fits our building perfectly and performs exactly as promised. Installation was smooth, well managed and on programme.”
Estates Manager, Commercial Office Development
“We have used Advent for multiple projects covering HVAC, ductwork manufacture, and plant installation. Every project has been delivered professionally, safely and to a high standard. Their in-house manufacturing capability gives them a real edge.”
Mechanical Consultant
“The quality of installation and attention to detail was excellent. The site team were polite, organised and proactive in solving problems. Commissioning and handover were thorough, and ongoing maintenance support has been first class.”
Facilities Manager, Healthcare
“Their ventilation and plant design was clearly developed around the building, not forced into it. Performance, access and future maintenance were all considered. This level of thinking is rare in the industry.”
Architect
“They helped us invest in a system that will last for decades. Energy savings, reliability and ease of maintenance were all prioritised. We now use them as our preferred HVAC partner across our portfolio.”
Property Asset Management
“Having design, manufacture, installation and maintenance under one roof made the entire process seamless. The system performs better than expected and the documentation and training provided were excellent.”
Building Services Manager, Education
  • HIGH-QUALITY IN-HOUSE SERVICES

In-House Ductwork and Ventilation Services; Bespoke for You

In-House Ductwork and Ventilation Services; Bespoke for You

Many mechanical service contractors subcontract their individual services. At Advent Ductwork Systems, we carry them out in-house.

All our design and manufacturing work is completed in-house by skilled and experienced members of our team. This means we can complete work to your precise specifications, with a rapid turnaround if required.

Contact
  • FULL-SERVICE MECHANICAL CONTRACTOR IN THE SOUTH OF ENGLAND

Ductwork and Ventilation Contractors Providing Quality Services Across London and Beyond

Based in Guildford, we’re well-equipped to offer ductwork and ventilation services across the South of England, including Hampshire, Berkshire, London, and Surrey.

We have nearly four decades of experience providing services to a wide range of commercial and industrial businesses, including schools, gyms, kitchens, and hospitals.

Our Services
Contact
  • Our Work

Our Portfolio

Take a look at some of the high-quality design and installation work we’ve completed for our valued clients.

Any questions or want to see how we can provide you with a similar service? Please get in touch.

School
Chineham
London Wall
Saffron House
Golf Club
Liverpool Street
Villiers Street
Reactive Maintenance Contractors
Villiers Street
Planned Preventative Maintenance
Ventilation Testing
Ventilation Contractors Design, Manufacture and Installation
Ductwork Design, Manufacture and Installation
Ductwork Design, Manufacture and Installation
View Portfolio
Contact
  • Frequently Asked Questions

Any Questions?

Here are some of the questions we’re most regularly asked about the mechanical services we offer. If you have any other questions or would like to see proof of our accreditation or certification, get in touch, we’d be happy to help.

Contact
We have an awkward ventilation system that needs modernising, can you help?

Yes. No project is too large or too tricky for our expert team – we love a challenge!

Yes. We create all of our ducting in our in-house manufacturing facility, meaning we can create tailored ducting that’s specific to your unique requirements.

We provide manufacturing services to the entire commercial and industrial sector.

We provide maintenance services to the entire commercial and industrial sector, including hotels, schools, hospitals, care homes, and factories.

Yes, as well as reactive maintenance, we provide emergency repair services. Depending on your location and when you need us, we can be on site in a couple of hours.

Yes, we have £10 million of public liability insurance. Please get in touch if you’d like to see a copy of our certificate.

Yes, we have £5 million of professional indemnity insurance. Please get in touch if you’d like to see a copy of our certificate.

We’re members of the Building Engineering Services Association (BESA) and are registered with Constructionline and SafeContractor.

We’re also a Daikin D1 and Mitsubishi Electric partner.

Yes, absolutely! We can provide mechanical services as part of our installations, including but not limited to; LPHW, Chilled Water, 2 & 4 Pipe Systems, Chilled Beams and VRF/VRV/DX AC systems. 

  • Contact Us

Get in Touch

Want to know more about the services we provide? Reach out to us using the contact form, and a friendly member of our team will get back to you as soon as possible.

Alternatively, give us a call or send us an email:

Contact

Designing, manufacturing, and installing high-quality, bespoke ductwork and ventilation systems across the South of England.