Orion Hive is a specialist HVAC practice for developers, consultants and contractors across the UAE. One team takes a project from load calculation and system design, through villa and building layouts, to tender-ready quantities and BOQs.
What is designed is what is measured, priced and delivered: drawings and quantities speak the same language.
Designed and measured from the same model
Design and estimation under one roof means fewer hand-offs, fewer assumptions and a clear base for procurement and variations.
Load calculations, system selection, duct and chilled water design for commercial, hospitality and institutional buildings.
Explore design 02Villa and apartment HVAC from room-by-room loads to coordinated layouts, schedules and installation details.
See the villa workflow 03Quantities measured from PDF, CAD and BIM, structured BOQs, vendor RFQs and clear assumptions and exclusions.
See how we measureEnd-to-end design and advisory, from concept through construction and handover. Early coordination, technical precision and commercial awareness go into every system.
Cooling and heating loads are calculated with the ASHRAE Heat Balance Method in industry-standard software, so equipment is sized to the real building and not to rules of thumb.
Equipment is selected with manufacturer-certified software and matched to the calculated loads, airflow, static pressure, part-load behaviour and the space and acoustic limits of the project.
Duct systems follow ASHRAE, SMACNA and local standards. Sizing is run in McQuay Duct Sizer and checked by hand, to control airflow, velocity, noise and static pressure.
Chilled water pipework is designed to recognised velocity and head-loss guidelines and sized in McQuay Pipe Sizer, so pumps and chillers run efficiently and flow stays balanced.
Fresh air, extract and smoke strategies designed for indoor air quality and life safety, coordinated with plant rooms, risers and architectural openings from the start.
Villas and residential buildings need HVAC that is comfortable, quiet, efficient and easy to maintain, without taking over the ceiling or the architecture. We design from the first load calculation to the last installation detail, coordinated with architectural and MEP drawings.
Architectural plans, finishes, orientation and client requirements.
Envelope, solar, occupancy and ventilation loads, room by room.
Split, ducted split, VRF/VRV or chilled water, matched to loads, noise and budget.
Units, ducts, pipes and drains placed around ceilings and structure.
Drawings, schedules and details ready for approval and site use.
Every quantity is taken off the drawings, verified against schedules and specifications, and converted into a structured Bill of Quantities with clear assumptions and exclusions.
Duct quantities are measured directly from the layout drawings, section by section. Each run is classified by system code, size and level, then converted into sheet-metal area, insulation area, and joint and support quantities.
Accessories are counted individually from the drawings and schedules, by type and size, because they drive cost far more than their length suggests.
Equipment is counted by tag from the layouts and reconciled with equipment schedules. Each item is priced together with the accessories that make it a complete installation.
Chilled water pipework is measured from plans and risers by size and material, with fittings, supports, insulation and testing priced as separate lines.
Valves, pumps and plant items are priced individually, with their ancillaries, because a small count carries a large share of the chilled water cost.
Sheets are issued in Excel, grouped by system and level, so every quantity traces back to the drawing. Hover a row to see its system in the summary. Format sample; figures are illustrative.
| Ref | System | Size (mm) | Length (m) | Area (m²) | Gauge (mm) | Insulation |
|---|---|---|---|---|---|---|
| Total | 132.0 | 310.31 | ||||
Share of total duct area
So nothing is a black box at tender stage
Six sections that follow the structure of the drawings. Open any section to see the lines behind its sub-total.
Sample format. Quantities and rates are illustrative and are not a price offer.
Plans, sections, schedules and specification checked for scope and revisions.
Gaps, conflicts and missing details raised before pricing starts.
Ducts, accessories, equipment, pipes, valves and pumps measured and tagged.
Quotations requested and compared for equipment and specialist items.
Rates, labour, materials, testing and preliminaries applied.
Structured BOQ checked for completeness, arithmetic and consistency.
Tender package with assumptions, exclusions and clarifications.
Orion Hive is a specialist HVAC consultancy delivering integrated, high-performance building systems and tender-ready quantities across complex and demanding projects. We support developers, architects, consultants and contractors from concept through construction and handover.
Every system is engineered to meet stringent regulatory requirements while optimising energy performance, reliability and lifecycle value. Every quantity is classified by system, size, material and location, cross-checked against schedules and specifications, and priced against current supplier quotations and market rates.
Though young and compact in scale, we work with one coherent vision: to deliver efficient, coordinated and sustainable HVAC systems that enhance building performance, ensure safety, and create long-term value.
Our work spans residential homes and villas, workspaces, restaurants, hotels, apartment buildings, commercial buildings, retail centres, entertainment spaces and institutional projects.
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Coordinated model views support completeness checks.
Tell us about the project and we will come back with a scope, a timeline and what we need from you. Design, villa or estimation, one conversation.
