AIR CONDITIONING SYSTEMS
Expert Supply, Installation & Maintenance of All Air Conditioning Systems
Mosam Engineering (Pvt.) Ltd. | Pakistan
Pakistan's Air Conditioning Specialists Built on Engineering, Backed by Experience
Pakistan’s climate is unforgiving. Summer temperatures regularly exceed 45°C across Punjab, Sindh, and Balochistan, while humidity along the coastal belt makes conditions even more demanding on both occupants and equipment. In this environment, air conditioning is not a comfort feature it is an operational essential for homes, offices, hospitals, retail spaces, factories, and data centers alike.
Mosam Engineering (Pvt.) Ltd. has established itself as one of Pakistan’s most trusted air conditioning engineering firms, delivering technically sound, energy-efficient, and durable cooling solutions across all sectors. Our team of qualified mechanical engineers, certified AC technicians, and energy consultants brings a level of professionalism and technical rigor that sets us apart from general contractors.
We do not believe in one-size-fits-all solutions. Every project begins with a thorough assessment of the space, occupancy patterns, thermal loads, and budget—ensuring the system we recommend and install is precisely the right fit for your needs. From a single split unit in a home office to a multi-building chiller plant serving a corporate campus, we engineer every solution with the same commitment to excellence.
About Us
Excellence in Every Degree delivering precise, reliable, and high-performance engineering solutions.
Mosam Engineering is Pakistan’s premier HVAC and engineering solutions provider, delivering excellence for over 20 years. Since our establishment in 2007, we’ve built a trusted reputation for quality, innovation, and customer satisfaction across residential, commercial, and industrial sectors.
HVAC
HVAC Installation & Services
Project Design
Project Design & Planning
Engineering Solutions
Interior Engineering Solutions
Contracting
Contracting & Management Services
Our Air Conditioning Services
Mosam Engineering provides a complete range of air conditioning services across Pakistan covering every stage from initial design and installation through to ongoing maintenance, emergency repair, and specialist consultancy.
Split Air Conditioning
Wall-mounted, multi-split, and inverter systems for all space types
Ducted Air Conditioning
Concealed, uniform cooling for whole-building comfort
ackage Units
Self-contained rooftop and floor-mounted systems for commercial & industrial use
Central Air Conditioning
Full chilled water and DX central systems for large buildings
VRF/VRV Systems
Energy-efficient multi-zone cooling for modern buildings
Chiller Systems
Large-scale cooling plants for commercial and industrial facilities
AC Energy Audits & Efficiency Upgrades
Identifying savings and improving performance
Indoor Air Quality (IAQ) Enhancement
Filtration, ventilation, and healthy air solutions
Smart Controls & BMS Integration
Intelligent scheduling, monitoring, and automation
Split Air Conditioning
The most versatile cooling solution expertly sized, installed, and optimized.
Split air conditioning systems remain the most widely used cooling technology in Pakistan, offering a combination of affordability, flexibility, and efficiency that suits a broad range of applications. However, the difference between a split AC that performs well and one that underperforms lies almost entirely in correct sizing and professional installation—two areas where Mosam Engineering excels.
Types of Split Systems We Install
- Standard wall-mounted split units (1-ton to 3-ton capacity)
- Floor-standing and cassette-type split units
- Multi-split systems (one outdoor unit serving multiple indoor units)
- High-wall inverter split systems for energy savings up to 60%
- Low-ambient split systems for year-round operation
Our Split AC Process
- Room-by-room heat load calculation using ASHRAE methodology
- Equipment selection from globally recognized brands, including Daikin, Mitsubishi, Gree, Haier, Carrier, and Hisense
- Correct pipe sizing, routing, and insulation to prevent energy losses
- Electrical supply assessment and dedicated circuit installation where required
- Vacuum testing of refrigerant lines before charging
- Performance testing, airflow balancing, and thermostat calibration upon commissioning
Many split AC problems inadequate cooling, frequent tripping, high electricity bills, and premature compressor failure are direct consequences of improper installation. Our certified installation teams follow manufacturer specifications precisely, ensuring your warranty remains valid and your system runs at full efficiency from day one.
Brands We Work With
We are experienced with all major brands available in the Pakistani market, including Daikin, Mitsubishi Electric, Mitsubishi Heavy Industries, Gree, Haier, Carrier, Hisense, Samsung, LG, Panasonic, Toshiba, and York, among others. We are not tied to any single brand—our recommendations are always based on what best suits your specific requirements and budget.
We are experienced with all major brands available in the Pakistani market, including Daikin, Mitsubishi Electric, Mitsubishi Heavy Industries, Gree, Haier, Carrier, Hisense, Samsung, LG, Panasonic, Toshiba, and York, among others. We are not tied to any single brand—our recommendations are always based on what best suits your specific requirements and budget.
Ducted Air Conditioning
Invisible, uniform, and powerful the professional's choice for whole-building comfort.
Ducted air conditioning systems deliver conditioned air through a concealed network of ducts, providing uniform temperature control across multiple rooms and zones without any visible indoor units. Ducted systems are the preferred choice for high-end residential properties, corporate offices, hotels, healthcare facilities, and any space where aesthetics and comfort consistency are priorities.
Why Choose Ducted AC?
- Completely concealed—no visible indoor units, only discreet supply and return grilles
- Uniform air distribution across all zones and rooms
- Quieter operation compared to wall-mounted units
- Ability to incorporate fresh air intake, filtration, and humidity control
- Central control from a single thermostat or Building Management System (BMS)
- Greater flexibility for zoning and independent room control
Our Ducted AC Capabilities
- Full heat load calculations and duct sizing using industry-standard software
- Ductwork design, fabrication, and installation (GI sheet and flexible ducting)
- Supply and return air grille selection and placement for optimal air distribution
- Concealed air handling units (AHUs) and ducted fan coil units
- Fresh air and ventilation integration
- Fire damper and smoke control integration per building safety codes
- Balancing and commissioning to ensure even air distribution across all outlets
Poorly designed ductwork is one of the leading causes of uneven cooling, excessive noise, and high energy consumption in buildings. Mosam Engineering’s design team ensures every ducted system is engineered for balanced airflow, low velocity noise, and minimal pressure drop—delivering a system that is both comfortable and energy-efficient.
Package Units
Self-contained, robust, and ideal for commercial and light industrial applications.
Package air conditioning units are self-contained systems where all components compressor, condenser, evaporator, and air handling are housed in a single casing. This makes them an efficient, cost-effective, and relatively simple-to-maintain cooling solution for a wide range of commercial and industrial applications in Pakistan.
Types of Package Units We Supply and Install
- Rooftop package units (RTUs)—ideal for retail outlets, warehouses, and factories
- Floor-mounted package units for indoor plant room installation
- Air-cooled package units
- Water-cooled package units
- Gas heat / electric cool packaged rooftop units
Ideal Applications
- Supermarkets and large retail stores
- Light manufacturing and assembly facilities
- Warehouses and logistics centres
- Restaurants and food service facilities
- Schools and institutional buildings
- Telecom shelters and outdoor equipment enclosures
Package units offer significant installation advantages particularly on rooftop applications where they free up valuable floor space and simplify ductwork routing. Mosam Engineering manages the full scope of package unit projects, including structural assessment for rooftop loads, curb fabrication, ductwork connection, electrical supply, and commissioning. We also provide ongoing maintenance and spare parts support for all major package unit brands.
Ducted Air Conditioning
Total climate control for large buildings designed for performance, engineered for efficiency.
Central air conditioning systems represent the pinnacle of large-scale climate control, providing coordinated cooling and heating across entire buildings or campuses from a centralized plant. These systems are the standard for hotels, hospitals, large office buildings, shopping malls, airports, and educational institutions wherever occupant comfort must be maintained consistently across large, complex spaces.
Central AC System Types We Design and Install
- Chilled water systems with central chiller plants and air handling units
- Direct expansion (DX) central systems with ducted distribution
- Two-pipe and four-pipe fan coil unit (FCU) systems
- Primary-secondary pumping arrangements for large-scale plants
- BMS-integrated central systems for automated climate management
Engineering Excellence in Central AC
Central air conditioning projects demand a level of engineering discipline that goes far beyond equipment selection. Hydraulic system design, pump sizing, pipe network layout, control logic, zoning strategy, and integration with fire and life safety systems must all be carefully coordinated. Mosam Engineering’s mechanical engineering team has the depth of expertise to manage this complexity.
Central AC System Types We Design and Install
- Full system design, including load calculations, equipment schedules, and single-line diagrams
- Detailed engineering drawings produced in AutoCAD and Revit MEP
- Equipment procurement from internationally certified manufacturers
- Mechanical and electrical installation by our in-house engineering teams
- System commissioning, balancing, and BMS integration
- Operator training and full O&M documentation handover
We have successfully delivered central air conditioning systems for projects ranging from mid-size office buildings to large-scale commercial complexes. Our approach combines technical rigor with practical site experience ensuring systems that perform exactly as designed in real operating conditions.
VRF/VRV Systems
The intelligent choice for modern buildings simultaneous heating, cooling, and unmatched energy efficiency.
Variable Refrigerant Flow (VRF) also marketed as Variable Refrigerant Volume (VRV) by Daikin represents the most sophisticated and energy-efficient air conditioning technology available today. By precisely modulating refrigerant flow to meet the exact demand of each indoor unit, VRF systems eliminate the energy waste associated with traditional on-off compressor cycling, delivering energy savings of 30–50% compared to conventional systems.
VRF systems are rapidly becoming the preferred choice for mid-to-large commercial buildings across Pakistan particularly corporate offices, hotels, and mixed-use developments due to their combination of efficiency, flexibility, and design versatility.
Key Advantages of VRF Systems
- Simultaneous heating and cooling in different zones from a single system
- Energy savings of 30–50% versus conventional central systems
- No ductwork required—refrigerant piping serves indoor units directly
- Individual zone control with precise temperature management
- Scalable and flexible—easy to add zones or reconfigure as needs change
- Long refrigerant pipe runs (up to 165 m), allowing outdoor units to be placed remotely
- Quiet operation with compact indoor units in multiple form factors
- Central monitoring and management via dedicated VRF controllers or BMS
Our VRF/VRV Expertise
VRF system design and installation requires specialist knowledge that goes beyond standard AC installation. Refrigerant pipe sizing, branch controller selection, total equivalent pipe length calculations, indoor unit combination ratios, and control system configuration all require engineering precision. Mosam Engineering’s team is trained and certified by leading VRF manufacturers and has delivered VRF projects across corporate, hospitality, and healthcare sectors.
- Authorised installation partners for leading VRF brands
- Full system design using manufacturer-provided VRF selection software
- Professional installation with pressure and leak testing
- Control system setup, BACnet/Modbus BMS integration
- System commissioning and performance verification
- Ongoing maintenance and remote diagnostics capability
Chiller Systems
The backbone of large-scale cooling engineered for reliability, efficiency, and longevity.
Chiller systems form the heart of central cooling plants for large commercial and industrial buildings. A chiller produces chilled water that is then distributed through insulated pipework to air handling units (AHUs) and fan coil units (FCUs) throughout the building, where it absorbs heat before returning to the chiller for re-cooling. When correctly designed and maintained, chiller plants are among the most energy-efficient and reliable large-scale cooling solutions available.
Types of Chiller Systems We Supply, Install, and Maintain
- Air-cooled scroll and screw chillers (50 kW to kW+)
- Water-cooled centrifugal and screw chillers for maximum efficiency
- Absorption chillers for waste heat or solar-powered applications
- District cooling connection and integration
- Modular chiller systems for phased capacity expansion
- Process chillers for industrial cooling applications
Cooling Towers and Condenser Water Systems
Water-cooled chiller plants require cooling towers to reject heat from the condenser circuit. Mosam Engineering designs and installs complete condenser water systems, including cooling towers, condenser water pumps, chemical dosing systems, and blowdown controls ensuring both cooling efficiency and water treatment compliance.
Chiller Plant Design and Engineering
- Cooling load calculations and chiller capacity sizing
- Chiller sequencing and control strategy design
- Primary/secondary and primary variable flow (PVF) pumping systems
- Thermal storage integration for peak demand management
- Energy modelling and lifecycle cost analysis
- Plant room layout and equipment arrangement drawings
Chiller Maintenance and Service
Chillers are among the most capital-intensive mechanical assets in any building. Mosam Engineering provides comprehensive chiller maintenance programs, including annual overhauls, refrigerant management, tube cleaning, oil analysis, electrical inspections, and performance monitoring. Our engineers are trained and certified to work on all major chiller brands, including Carrier, Trane, York, Daikin, and McQuay.
- Annual and bi-annual chiller overhaul programmes
- Refrigerant leak testing and F-Gas compliant handling
- Oil sampling and analysis
- Condenser and evaporator tube brushing and inspection
- Control system diagnostics and recalibration
- Emergency chiller repair and rental chiller coordination during downtime
Additional Air Conditioning Services
AC Energy Audits & Efficiency Upgrades
Older air conditioning systems are often the single largest consumer of electricity in a building and frequently the most inefficient. Mosam Engineering conducts detailed AC energy audits that identify underperforming equipment, refrigerant issues, duct leakage, and control system deficiencies. We then develop a prioritized upgrade plan that delivers measurable reductions in energy consumption and operating costs, with a clearly projected return on investment.
Indoor Air Quality (IAQ) Enhancement
Air conditioning systems do more than cool—they also circulate and filter the air occupants breathe. Poor IAQ leads to health complaints, reduced productivity, and, in sensitive environments such as hospitals and schools, genuine health risks. We offer IAQ assessments, filtration upgrades (including HEPA and activated carbon), UV-C germicidal systems, and fresh air ventilation integration to ensure the air inside your building is clean, fresh, and healthy.
Smart Controls & Building Management System (BMS) Integration
Modern air conditioning should be intelligent. Mosam Engineering integrates AC systems with smart thermostats, occupancy sensors, BACnet and Modbus-compatible BMS platforms, and remote monitoring solutions. This enables automated scheduling, demand-based control, and real-time performance monitoring delivering both energy savings and operational convenience.
Certified
Certifications & Registrations
Recognized and certified by leading industry standards
ISO Certified
Quality Assured
Licensed Contractor
Industry Approved
How Our AC Process Works
Every air conditioning project at Mosam Engineering follows a clear and structured process from first contact to final handover.
- Site Assessment—Our engineers visit your site, assess your space, and gather all technical requirements, including room dimensions, occupancy, heat sources, and existing infrastructure.
- Custom Design & Proposal—We prepare a detailed AC system design and transparent quotation with no hidden costs—including equipment specifications, layout drawings, and projected energy performance.
- Installation & Execution—Our certified technicians carry out all work to ASHRAE and manufacturer standards with minimal disruption to your home or business operations.
- Testing & Commissioning—Every system is fully tested, pressure-checked, balanced, and commissioned before handover—ensuring it performs exactly as designed from day one.
- Handover & Training—We provide full documentation, including as-built drawings, operation and maintenance manuals, and warranty certificates. We also train your team on correct system operation.
- Ongoing Maintenance & Support—Structured maintenance plans and 24/7 emergency support keep your AC system running at peak efficiency and extend its operational lifespan.
Why Clients Across Pakistan Choose Mosam Engineering
- Certified Engineering Team: Qualified mechanical engineers and certified AC technicians on every project
- Precise Load Calculations: We never guess at capacity—every system is sized using verified engineering calculations
- Brand-Independent Advice: We recommend based on technical merit and your budget, not supplier incentives
- Full Project Delivery: Design, supply, installation, commissioning, and aftercare—all under one roof
- Documented Handover: Every project is handed over with as-built drawings, O&M manuals, and warranty certificates
- Transparent Quotations: Detailed, itemised proposals with no hidden costs and clearly defined scope
- Nationwide Coverage: Active across Karachi, Lahore, Islamabad, Rawalpindi, Peshawar, Faisalabad, Multan, and beyond
• AMC & Emergency Support: Structured maintenance contracts with priority response and 24/7 emergency call-out for critical sites
Areas We Serve Across Pakistan
Mosam Engineering provides air conditioning services across all major cities and industrial zones throughout Pakistan.
- Karachi—Commercial, industrial, and residential AC projects across Pakistan’s largest city
- Lahore—Corporate offices, manufacturing facilities, hospitals, and educational institutions
- Islamabad & Rawalpindi—Government buildings, data centres, embassies, and commercial projects
- Peshawar—Industrial and commercial AC installations
- Faisalabad—Textile and manufacturing sector AC solutions
- Multan—Commercial and residential AC services
- Quetta—Industrial and commercial climate control projects
- Nationwide—Industrial zones, infrastructure projects, and remote site installations across Pakistan
Client Testimonials Our Customers
Mosam Engineering is a trusted AC company in Pakistan delivering outstanding results for clients across every sector and every major city.
Tariq Mahmood
Operations Director, Corporate Office, Karachi
“Mosam Engineering installed a complete VRF system across our 6-floor corporate office in Karachi. The project was delivered on time and within budget, and the system has been running perfectly for over a year. Their engineering team is highly professional and technically excellent.”
Dr. Ayesha Noor
Facility Manager, Pharmaceutical Plant, Lahore
“We had an urgent AC failure in our pharmaceutical manufacturing facility in Lahore. Mosam emergency team was on-site within hours and had the system back online the same day. Their GMP knowledge and fast response saved us from a very costly production shutdown.”
Imran Khalid
Project Manager, Healthcare Construction, Islamabad
“We engaged Mosam Engineering for HVAC design consultancy on a large hospital project in Islamabad. Their load calculations, IAQ design, and technical documentation were thorough and professional. We have already engaged them for two more projects.”
Usman Shahid
Plant Manager, Textile Manufacturing, Faisalabad
“Mosam Engineering handles our Annual Maintenance Contract for all HVAC systems across our three factory sites in Faisalabad. Their preventive maintenance team is reliable, well-equipped, and always delivers detailed service reports. Highly recommended for industrial HVAC maintenance in Pakistan.”
Speak to Our Air Conditioning Engineers. Today
Whether you are cooling a single room or an entire commercial complex, Mosam Engineering has the technical expertise, the certified workforce, and the project management capability to deliver a solution that performs, lasts, and saves energy.
Contact our team to arrange a free site assessment and technical consultation. We will review your space, understand your requirements, and provide a detailed, no-obligation proposal—with honest advice and realistic timelines.
Frequently Asked Questions
What air conditioning services does Mosam Engineering provide?
Mosam Engineering provides a complete range of air conditioning services in Pakistan including split AC installation, ducted systems, package units, central AC, VRF/VRV systems, chiller systems, AC energy audits, IAQ enhancement, and smart controls & BMS integration. We serve residential, commercial, and industrial clients across all major cities in Pakistan.
Which AC brands do you install and repair?
We are multi-brand specialists working with all major AC brands—including Daikin, Mitsubishi Electric, Mitsubishi Heavy Industries, Gree, Haier, Carrier, Hisense, Samsung, LG, and Panasonic, Toshiba, and York, among others. We are not tied to any single manufacturer, so we always recommend the best equipment for your specific needs and budget.
Do you offer annual maintenance contracts for AC systems?
Yes. We offer structured Annual Maintenance Contracts (AMC) that include scheduled preventive maintenance visits, full system checks, priority emergency response, and a dedicated account manager. AMC clients also receive discounted parts pricing throughout the contract period.
How quickly can you respond to an emergency AC breakdown?
Mosam Engineering operates a 24/7 emergency response service for critical environments, including hospitals, data centers, pharmaceutical facilities, cold storage, and server rooms. Our emergency team responds with clearly defined SLAs to ensure minimum downtime for your operations.
Do you provide AC design and consultancy services?
Yes. Our AC design and consultancy services cover full heat load calculations, ductwork design, energy performance modeling, IAQ assessments, AutoCAD and Revit MEP drawings, BOQs, and independent technical reviews. We support both new construction projects and existing system upgrades.
What standards do your AC installations comply with?
All our AC installations comply with ASHRAE standards, CIBSE guidelines, and local Pakistani building codes. For specialized environments such as cleanrooms, pharmaceutical facilities, data centers, and hazardous areas, we also comply with ISO, GMP, and ATEX standards as required.
How do I get a quote for air conditioning services in Pakistan?
Simply contact our team through our website or call our office directly. Our engineers will arrange a site visit, assess your requirements, and provide a detailed and transparent quotation with a clearly defined scope of work at no obligation.