About Us

Scotland's
Ventilation
Specialists

Cliventa Engineering Ltd is a specialist ventilation installation subcontractor based in Dundee, Scotland. We deliver ductwork and MVHR installation packages for M&E contractors, main contractors and commercial developers across the UK.

"Two services. Done properly. Documented. On programme."

— Cliventa Engineering positioning
8+
Specialist installation team members
£500k
Annual revenue run rate (June 2026)
6+
Projects delivered across Scotland
2
Core services — ductwork and MVHR

What We Do

Two Services.
Both Done Properly.

01
Ductwork

Ductwork Installation

All types of HVAC ductwork for commercial and residential projects. Installed to BESA DW/144. Full subcontracting packages including RAMS, leakage testing and O&M documentation.

Rectangular, circular, spiral, flat oval
Fire-rated (BS476 / EN1366) and stainless steel
Pre-insulated phenolic ductwork
Air leakage testing to DW/143
02
MVHR

MVHR Installation

Mechanical Ventilation with Heat Recovery — all brands, all system types. Design coordination through commissioning and handover. Compliant with Scottish Technical Handbook Section 3.14 and Building Regulations Part F.

Zehnder, PAUL, Nuaire, Vent-Axia, Dantherm and more
Centralised and decentralised systems
Room-by-room commissioning certificates
Full O&M handover documentation

The Team

Led by Engineers.
Built on Experience.

Our directors bring combined decades of HVAC engineering and business leadership. Site delivery is led by Sergii Kulish — Technical Director and H&S Competent Person with 20+ years in the industry.

Managing Director
Oleh Makarenko

Responsible for business development, client relationships, tenders, finance and strategy. Leads all commercial operations and client-facing activity across Cliventa's project portfolio.

CSCS H&S Level 1 — Highfield
Technical Director · H&S Competent Person
Sergii Kulish

20+ years HVAC experience. Specialist Diploma in Heat, Gas Supply and Ventilation (Kyiv National University of Construction and Architecture). UK equivalent: RQF Level 6 (Ecctis verified). Leads all site delivery, H&S compliance and technical quality.

CSCS Advanced Craft IPAF 3a/3b PASMA First Aid Asbestos Awareness

Compliance & Accreditations

Insured. Registered.
DW/144 Compliant.

✓ Active
Employers' Liability Insurance
£10,000,000 — UK Insurance Ltd (Direct Line) · Policy 703454232
✓ Active
Public Liability Insurance
£5,000,000 — UK Insurance Ltd
✓ Active
Professional Indemnity
£1,000,000 — UK Insurance Ltd
✓ Active
CSCS — All Site Personnel
Construction Skills Certification Scheme. Required on all UK commercial sites.
✓ Active
IPAF 3a/3b
Scissor lifts and boom lifts. Held by Technical Director (reg OP/2652861, exp Oct 2029).
✓ Active
PASMA & SNIPEF
Mobile scaffold towers. Active SNIPEF membership (Scottish & Northern Ireland Plumbing Employers' Federation).
✓ Active
PCS Registered Supplier
Public Contracts Scotland. Enables public sector Quick Quote and framework tendering.
⏳ Q3 2026
Constructionline + CHAS
Applying Q3 2026. Required for Tier 1 M&E contractor supply chain approval.

Where We Work

Central Scotland
and Beyond.

Our operational hub is Dundee with active projects in Glasgow, Edinburgh and Perthshire. We take on commercial opportunities UK-wide on a case-by-case basis.

Registered address: Office 2/3, 48 West George Street, Glasgow G2 1BP
Company No. SC865843 · VAT No. GB 507479373

Dundee Operational HQ
Glasgow Active project · Central Quay
Edinburgh Completed · Carlton Hilton
Perth & Perthshire Active project · Taymouth Castle
Angus · Fife · East Lothian Operational zone
UK-wide On request

Ready to Work
With Us?

Send us your drawings and specification. We'll respond with a detailed quote within 48 hours. All enquiries treated in strict confidence.

Request a Quote → info@cliventa.co.uk