Complete HVAC CareCleaning, Servicing & Repair
We provide expert maintenance, cleaning, and technical services for all major AC systems in Dubai's luxury properties:
- 1. Rooftop Package - Air Cooled AC
- 2. Water Cooled Package Unit
- 3. Heat Pump Package AC
- 4. Inverter Ducted Split AC
- 5. Fixed Speed Ducted Split AC
Past Work & Diagnostics
Recent successful projects involving chemical cleaning, maintenance, and technical repairs across Dubai.
Rooftop Package - Air Cooled AC
Diagnosis & Solution
Diagnosed high-pressure tripping due to condenser blockage. Performed chemical foam wash to restore heat rejection and calibrated fan amperage, eliminating short-cycling.
Water Cooled Package Unit
Diagnosis & Solution
Fixed critical cooling failure from calcified strainers. Flushed cooling circuit, replaced fatigued V-belts with laser alignment, and upgraded burnt contactors.
Heat Pump Package AC
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Diagnosis & Solution
Resolved thermostat communication errors. Re-terminated corroded control wiring and balanced the blower assembly to eliminate structural vibration and noise.
Inverter Ducted Split AC
Diagnosis & Solution
Rectified ceiling water leaks. Hydro-jetted clogged condensate lines, sterilized the drain tray, and verified PCB logic for efficient humidity control.
Fixed Speed Ducted Split AC
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Diagnosis & Solution
Restored cooling to an aging unit. Replaced weak capacitors, traced micro-leaks via Nitrogen Pressure Test, and performed precision gas recharge by weight.
Live Telemetry & Logistics
Real-time coordination of our 17 specialist teams across Dubai.
Specialized HVAC Systems & Repair Protocols
We provide specific engineering solutions for the 5 major AC system types found in Dubai. Our technicians are trained on the unique working principles and failure points of each system.
1Rooftop Package - Air Cooled AC
Heavy-duty self-contained units for villas and commercial malls.
Technical Information
These are 'Packaged' units where the evaporator, compressor, and condenser are all housed in a single metal casing on the roof.
Working Principle
The unit draws in hot return air, passes it over a refrigerant-cooled evaporator coil, and pushes cold air down into the ductwork. Heat is rejected upwards into the atmosphere via powerful condenser fans.
Service Protocols & Engineering Solutions
Cleaning & Maintenance
- High-pressure chemical foam wash of condenser coils
- Evaporator fin combing and sanitization
- Blower belt tensioning and alignment
Repair & Technical Services
- Compressor replacement (Scroll & Reciprocating)
- Contactor and Overload Relay upgrades
- High/Low Pressure switch calibration
2Water Cooled Package Unit
High-efficiency systems for high-rise buildings and district cooling.
Technical Information
Unlike air-cooled units, these rely on a steady flow of water to remove heat from the refrigerant.
Working Principle
Refrigerant heat is transferred to a water loop in a shell-and-tube heat exchanger. This warm water is then pumped to a cooling tower to release heat.
Service Protocols & Engineering Solutions
Cleaning & Servicing
- Acid flushing of shell-and-tube condensers
- Strainer and flow-switch cleaning
- Chemical treatment of water circuit
Repair & Technical Services
- Water regulating valve adjustment
- Cooling tower pump logic repair
- Leak sealing in copper-nickel exchangers
3Heat Pump Package AC
Dual-function units providing cooling in summer and heating in winter.
Technical Information
Identical to standard package units but equipped with a 4-way reversing valve to reverse the refrigeration cycle.
Working Principle
In cooling mode, it ejects heat outside. In heating mode, the reversing valve switches flow, absorbing heat from outside air and pumping it indoors.
Service Protocols & Engineering Solutions
Cleaning & Maintenance
- Outdoor coil deep cleaning (critical for heating efficiency)
- Defrost sensor cleaning
- Air filter sterilization
Repair & Technical Services
- Reversing valve solenoid replacement
- Thermostat heating/cooling logic configuration
- Defrost board diagnostics
4Inverter Ducted Split AC
Modern energy-efficient units with variable speed compressors.
Technical Information
Uses a DC Inverter drive to modulate the frequency of the compressor motor (Hz) based on real-time load.
Working Principle
Instead of turning off when the room is cold, the compressor slows down to maintain exact temperature, saving up to 40% energy.
Service Protocols & Engineering Solutions
Cleaning & Servicing
- Gentle low-pressure washing (sensitive electronics)
- PCB heat sink dust removal
- Sensor calibration
Repair & Technical Services
- IPM (Intelligent Power Module) diagnostics
- Communication wire shielding
- Electronic expansion valve (EEV) troubleshooting
5Fixed Speed Ducted Split AC
Traditional, rugged units found in most older Dubai villas.
Technical Information
Operates on a simple On/Off logic. The compressor runs at 100% capacity until the thermostat is satisfied.
Working Principle
When the room warms up, the thermostat triggers a contactor, engaging the compressor at full speed immediately.
Service Protocols & Engineering Solutions
Cleaning & Maintenance
- Condenser and Evaporator coil chemical flushing
- Drain tray waterproofing
- Blower wheel degreasing
Repair & Technical Services
- Capacitor replacement (Dual/Single)
- Contactor pitting repair
- Gas leak repair (R22/R410A)
Deep Cleaning & Maintenance
Dust and sand in Dubai block your coils, causing high electricity bills and warm air. Our 60% focus is on Prevention through deep chemical cleaning protocols.
Hydro-Jet Chemical Coil Cleaning
Dubai’s sand and salt air cause 'Galvanic Corrosion'. Our chemical wash removes deep-seated grime to protect your compressor.
Ductwork Sanitization
Eliminate 'Sick Building Syndrome'. We use industrial fogging machines and rotary brushes to sanitize hidden mold in your ducts.
Preventive Annual Maintenance (AMC)
The 'Golden Period' Protection Plan. Quarterly maintenance ensures Package Units and Ducted Splits run efficiently year-round.
Transparent Pricing
Honest Pricing. No Hidden Fees. VAT Included.
Basic Service Call
- Filter cleaning
- Gas level check
- Digital Health Report
- Technician Transport
Deep Chemical Wash
- Coil foam wash
- Drain tray flush
- Duct sanitization spray
- Before/After Report
Gas Leak Repair
- Nitrogen Pressure Test
- Brazing & Sealing
- Vacuum Process
- Gas Refill (R410A/R22)
Project Showcase
Real results from real locations across Dubai.
BEFORE
AFTERVilla in Jumeirah Islands - Ducted Split
Problem: Low airflow, high DEWA bill, warm cooling.
Solution: Deep chemical cleaning of blower and evaporator coil.
Result: Airflow increased by 35%, cooling reached 22°C in 10 minutes.
BEFOREAFTERRestaurant in Downtown - Rooftop Package Unit
Problem: Unit tripping frequently (Short Cycling).
Solution: Diagnosed faulty High-Pressure Switch, replaced contactor.
Result: Unit stabilized, business operations resumed in 2 hours.
The Digital Health Report
We don't just say we fixed it; we prove it. Every service visit concludes with a comprehensive PDF report sent directly to your WhatsApp and Email.
Before & After Photos
Visual proof of cleaning and repairs.
Instant WhatsApp Delivery
Receive your asset's medical history instantly.
Service Report #4921
Generated on 12 Oct 2024
Technician Notes:
Coil cleaning completed. Airflow restored to 100%.
Tailored HVAC Care for Every Space
Villas & Large Apartments
Specialized Ducted Split cleaning to protect gypsum ceilings from water leaks and reduce bedroom humidity.
Offices & Commercial
Rooftop Package Unit maintenance ensuring fresh air intake compliance and compressor longevity for 24/7 cooling.
Malls & Warehouses
Heavy-duty condenser washing and belt tensioning for large-scale industrial cooling systems.
UNITECH Chiller Specialists
Industrial HVAC Engineers in Dubai • Open 24 Hours
Ibrahim Al Mansoori
Local Guide • 2 days ago
We manage a mall in Barsha. UNITECH handles the Rooftop Chiller Maintenance. They performed chemical foam washing on the condenser coils and replaced the fan motors. Head pressure dropped significantly.
Thank you Mr. Ibrahim. Clean coils are essential for preventing High Pressure Trips in summer.
James Wilson
Local Guide • 3 days ago
Our tower had a compressor burnout. Their engineer diagnosed the electrical failure and replaced the Bitzer Screw Compressor within 24 hours. Very professional lifting and commissioning.
Sarah Jenkins
Local Guide • 1 week ago
The Cooling Towers were full of scale. They did a complete descaling and replaced the fill packs. The approach temperature is now perfect. Best industrial HVAC team.
What Our Clients Say
"UNITECH maintains our 10-ton Package Units. Their preventive approach saved us thousands in potential compressor failures."
Production Manager
Warehouse Operations, Al Quoz
"My villa's AC was leaking water destroying my gypsum ceiling. Their team flushed the drain line and fixed the tray insulation perfectly."
Mrs. Sarah
Homeowner, Palm Jumeirah
"Transparency is key. The digital PDF report they send after every job gives me peace of mind knowing exactly what was fixed."
Ahmed Al-Futtaim
Property Manager, Dubai Marina
Frequently Asked Questions
Do you serve commercial buildings?
Yes, we specialize in Rooftop Package Units for malls, offices, and warehouses.
Is your work guaranteed?
Yes, we provide a 1-month warranty on service and up to 1-year warranty on replaced compressors.
How quickly can you arrive?
For emergencies in Dubai, our target arrival time is under 90 minutes.
Why is chemical cleaning necessary?
Water alone cannot remove the salt and dust cemented onto the aluminum fins. Chemical foam lifts this grime to restore heat exchange efficiency.
