Engineering Comfort. Building Excellence.
Integrated Engineering Solutions You Can Trust
Delivering high-quality HVAC, Civil, MEP and Interior Decoration solutions with safety, integrity and unmatched performance.
Qatar-based engineering partner
Built for residential, commercial and industrial project delivery.
About Doha Call Line (DCL)
Engineering solutions that build better futures.
Doha Call Line is a Qatar-based multidisciplinary company providing HVAC Solutions, Civil Works, MEP Services and Interior Decoration for residential, commercial and industrial projects.
With over a decade of experience, DCL has grown from a trusted cooling solutions provider to a reliable engineering and construction partner known for quality, safety and timely delivery.
0+Years Experience
0+Projects Completed
0+Skilled Professionals
Vision
To become a leading engineering and construction service provider in Qatar, recognized for quality, innovation, reliability and sustainable solutions.
Mission
To deliver high-quality HVAC, Civil, MEP and Interior Decoration solutions through expertise, integrity and commitment to exceeding client expectations.
Core Values
Safe, quality and sustainable delivery.
We are dedicated to delivering safe, quality and sustainable projects that create long term value for our clients and community.
We deliver quality workmanship in everything we do.
We prioritize safety for our people, clients and projects.
We operate with honesty, transparency and fairness.
We embrace new ideas and technology to deliver better solutions.
We are committed to environmental responsibility and a sustainable future.
We believe in collaboration to achieve excellence together.
Discover Our Services
Complete engineering services under one platform.
Clear scopes, coordinated execution and reliable project delivery across HVAC, Civil, MEP and Interior Decoration.
HVAC Solutions
Design, supply, installation, testing and maintenance of air conditioning, ventilation and refrigeration systems.
- Load calculating & system design
- VRF/VRV, chilled water & DX systems
- AHU, FCU, FAHU & RAHU installation
- Ducting, insulation & air distribution
- Testing, commissioning & maintenance
Civil Works
Structural works, concrete works, masonry, plastering, tiling, and all related civil construction services.
- Structural works (RCC, steel & masonry)
- Concrete works & formwork
- Roads, paving & infrastructure works
- Excavation, backfilling & compaction
- Finishing & refurbishment works
MEP Services
Mechanical, electrical & plumbing services including HVAC, electrical systems, plumbing, firefighting and more.
- Electrical power distribution (LV/MV)
- Lighting, emergency & exterior lighting
- Plumbing, sanitary systems
- Fire alarm, fire fighting & Gas systems
- BMS, ELV, Data & Communication
- Testing, commissioning & maintenance
Interior Decoration
Interior design, fit-out, ceiling, flooring, painting, partitions, lighting and all interior decoration works.
- Interior design & space planning
- Gypsum works, partitions & ceilings
- Flooring (tiles, marble, vinyl, carpet, etc)
- Painting, wallpaper & wall finishes
- Joinery, carpentry & custom furniture
- Lighting design & decorative works
Integrated Engineering Solutions
We build more than projects — we build trust.
Design & Engineering
Technical drawings, calculations and engineering documentation.
Procurement & Supply
Material sourcing, supplier coordination and project logistics.
Construction & Installation
Site execution by skilled teams with quality and safety control.
Testing & Commissioning
Performance verification, inspection and handover readiness.
Operation & Maintenance
Reliable after-service support and preventive maintenance.
Turnkey Project Delivery
One platform from concept to completion.
ISO 9001:2015Quality Management
ISO 14001:2015Environmental Management
ISO 45001:2018Occupational Health & Safety
Team & Organization
Organized for efficient project delivery.
Our organizational structure is designed to ensure efficient project delivery, clear communication and accountability at every level.
General Manager
Leadership & Strategic Oversight
Overall direction, business strategy, stakeholder coordination and project performance management.
Technical design, calculations, project planning and documentation.
Planning, budget, scheduling, client coordination and risk management.
Site supervision, quality monitoring and safe execution of works.
Installation, testing, commissioning, operation and maintenance.
Admin, HR, procurement, QA/QC, finance and HSE support.
Safety First
Health, Safety & Quality
We are committed to the health, safety and well-being of our people, our clients and the communities in which we work.
PPE Compliance
Mandatory PPE, helmets, safety shoes, gloves and goggles.
Risk Assessment
Hazard identification, risk evaluation and control measures.
Toolbox Talks
Daily safety briefing, task planning and worker awareness.
Emergency Response
Emergency procedures, evacuation plans and first aid readiness.
Quality Inspections
Material inspections, method statements and final testing.
Record & Reporting
Inspection records, NCR tracking and corrective actions.
Why Choose Us
Reliable delivery from planning to commissioning.
Extensive experience across HVAC, Civil, MEP and fit-out projects.
Qualified engineers, supervisors, technicians and skilled workers.
Strict compliance with specifications, inspection and standards.
Efficient planning, coordination and execution without compromising quality.
Risk assessment, toolbox talks and safe working procedures.
HVAC, Civil, MEP and Interior services under one coordinated platform.
Our Projects
Project capabilities across every discipline.
Choose a project category to view details and sample project visuals.
HVAC PROJECT
HVAC solutions for efficient and reliable building comfort.
From central chilled water plants to VRF/VRV systems, AHU/FAHU installation, ducting, testing and maintenance.
CIVIL PROJECT
Civil construction works delivered with safety and accuracy.
Structural works, concrete works, block work, masonry, waterproofing, finishing and related civil construction services.
MEP PROJECT
Integrated mechanical, electrical and plumbing systems.
Electrical power distribution, lighting, LV systems, plumbing, drainage, BMS and control systems.
DECORATION PROJECT
Interior fit-out and decoration works with refined finishing.
Gypsum ceilings, partitions, painting, flooring, wall tiling, joinery, carpentry and decorative lighting.
Major Clients
Trusted by leading organizations across Qatar.
We are proud to have partnered with leading organizations across Qatar, delivering excellence through trusted engineering solutions.
Qatar Museums
Delivered comprehensive MEP solutions for various museum facilities, ensuring world-class comfort, efficiency, and reliability.
Redco
Executed HVAC, plumbing, and MEP works for multiple residential, commercial, and infrastructure projects with high quality and on-time delivery.
SECC
Partnered on large-scale infrastructure and building projects, providing complete MEP and civil engineering solutions.
Al Jaber
Delivered a wide range of MEP services across critical and commercial projects, meeting the highest standards of safety, quality, and performance.
Doha Oasis
Undertook comprehensive refurbishment works to enhance building performance, aesthetics, and comfort across residential and commercial areas.
Contact Us
Let’s build the future together.
Have a project in mind? Get in touch with us and we will deliver the right engineering solution.
Address
Office 304, Level 30
Marina Twin Tower A
Lusail City, Qatar