HVAC SYSTEMS

HVAC SYSTEMS (Heating, Ventilation & Air Conditioning)

At TMC – Top Mechanic Company, we provide complete HVAC solutions designed for comfort, efficiency, reliability, and long-term performance. Our services cover the full cycle: design, supply, installation, testing, commissioning, and preventive maintenance for residential, commercial, and industrial buildings.

VRF & VRV Systems

Variable Refrigerant Flow (VRF/VRV) systems offer advanced zoning control and high energy efficiency.

Our services include:

• Complete load calculation and system sizing

• Supply and installation of outdoor condensing units

• Installation of indoor cassette, ducted, or wall-mounted units

• Refrigerant piping and multi-branch distribution

• Centralized and smart control integration

• Pressure testing, flushing, vacuuming & charging

• Full commissioning and performance tuning

Benefits:

• Flexible for small to very large projects

• Low energy consumption with inverter technology

• Independent room temperature control

• Quiet operation and long lifespan

Package Units & Split Systems

We install a wide range of direct-expansion (DX) solutions suitable for villas, shops, offices, server rooms, and warehouses.

Package Units

• Rooftop package units (cooling only or heat pump)

• Ducted package units with VFD control

• Economizer & free cooling systems

Split Systems

• Wall-mounted AC split units

• Cassette & concealed split systems

• Copper piping, insulation & electrical connections

• Refrigerant leak testing and commissioning

Advantages:

• Fast installation

• Cost-effective solution

• High reliability with minimal maintenance

Ducting, Insulation & Air Balancing

We fabricate and install all types of HVAC ductwork according to SMACNA standards.

Ducting Types

• GI rectangular duct

• Spiral round duct

• Flexible duct & acoustic insulated duct

• Kitchen hood and toilet exhaust ducting

Duct Insulation

• Thermal insulation (XPS / fiberglass / rock wool)

• Acoustic insulation for noise reduction

• Vapor-barrier and aluminum cladding

Air Balancing

• Supply and return air balancing

• CFM measurement for each diffuser

• Pressure testing and leakage control

• Fire damper & smoke damper testing

Fresh Air & Exhaust Ventilation Systems

We design mechanical ventilation systems to ensure healthy indoor air quality.

Fresh Air Systems

• Fresh Air Handling Units (FAHU)

• Treated Fresh Air Units (TFAU)

• MERV/HEPA filtration

• Heat recovery ventilation (HRV/ERV)

Exhaust Systems

• Toilet, kitchen, and general exhaust

• Car park ventilation with CO sensors

• Smoke extraction fans

• Jet fans for parking areas

smoke Management & Stair Pressurization

We implement life-safety ventilation systems that comply with international fire codes.

Smoke Control Systems

• Smoke extraction ducting

• High-temperature fans (300°C/2hr)

• Fire-rated dampers and smoke detectors

• Integration with fire alarm panels

Stair Pressurization Systems

• Pressurization fans with VFD

• Pressure relief dampers

• Continuous pressure monitoring

• Emergency mode operation

Purpose:

To ensure safe evacuation during fire emergencies by maintaining clean escape routes.

Chillers, Boilers, AHUs & FCUs

We design and install full central HVAC plants for large buildings.

Chiller Systems

• Air-cooled and water-cooled chillers

• Primary/secondary pumping systems

• Chilled water piping networks (HDPE / PPR / GI)

• Plate heat exchangers and cooling towers (if required)

• Integration into BMS (Building Management System)

Boilers (Heating Systems)

• Steam and hot water boilers

• Expansion tanks, pumps & circulation systems

• Radiators and underfloor heating interface

• Safety controls and combustion tuning

Air Handling Units (AHUs)

• Fresh air handling

• Heat recovery units (HRV/ERV)

• HEPA/ESP filtration for clean air applications

• Humidification/dehumidification

Fan Coil Units (FCUs)

• Ceiling exposed and concealed types

• Thermostat control & BMS integration

• Condensate drainage and insulation

• Balanced air distribution

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