Daikin 3.8 Ton Duct Type AC – Non-Inverter Heat & Cool (FLQN125EXV1 / RQ125DXY1, 3-Phase, R410A)

The Daikin 3.8 Ton Duct Type AC (indoor FLQN125EXV1 / outdoor RQ125DXY1) is a commercial-grade, non-inverter ducted air conditioner. It delivers dependable cooling in summer and heating in winter for offices, shops, showrooms, halls and other medium to large commercial spaces. It runs on R410A refrigerant with a 3-phase power supply and is installed out of sight in the ceiling, so you get strong, even comfort without wall-mounted units spoiling your interior.

At Workman Services, we supply, plan, install, test and commission this system for commercial projects across Lahore, Rawalpindi and Faisalabad. Our team has delivered HVAC solutions since 2006.

Key benefits at a glance:

• Year-round comfort: one system handles both cooling and heating, so you don’t need separate equipment.
• Clean, discreet look: the concealed indoor unit sits above the ceiling, leaving only grilles or diffusers on show.
• Even air across multiple areas: connected ductwork spreads conditioned air through larger or divided spaces.
• Straightforward, robust operation: non-inverter technology keeps the system simple to run and service.
• Built for commercial use: 3-phase power and commercial-grade design support demanding daily operation.

What Is the Daikin 3.8 Ton Duct Type AC?

A duct type air conditioner is a centralised cooling and heating system. Its indoor unit is hidden above a false ceiling, and conditioned air travels through ductwork to grilles or diffusers in each area. The Daikin 3.8 Ton Non-Inverter Duct Type AC pairs the FLQN125EXV1 concealed indoor unit with the RQ125DXY1 3-phase outdoor unit. It offers a cooling capacity of 3.8 tons of refrigeration, roughly 45,600 BTU/h.

In simple terms, it is a single, powerful system that conditions a medium to large commercial space through hidden ducts rather than visible wall units.

How the System Works

The outdoor unit (RQ125DXY1) houses the compressor and condenser. The indoor unit (FLQN125EXV1) sits in the ceiling void and contains the fan and coil. Refrigerant piping links the two. In cooling mode, the system pulls heat out of the indoor air and releases it outside. In heating mode, it reverses the cycle to bring warmth indoors.

Air from the indoor unit then moves through supply ducts to diffusers, while return air flows back for reconditioning. This design is why a Daikin duct AC works so well for open-plan offices, retail floors and halls where you want consistent temperatures without units on every wall.

Key Benefits of the Daikin Duct Type AC

Powerful Cooling and Heating

Pakistan’s commercial spaces face extreme heat in summer and cool, damp winters in cities like Lahore and Rawalpindi. This system is designed for demanding commercial applications. It provides effective cooling during hot weather and heating when required, helping you maintain a comfortable indoor environment throughout the year.

Why it matters: staff stay productive, customers stay longer and you avoid running two separate systems for different seasons.

Ducted Air Distribution

The concealed duct type design distributes conditioned air through connected ductwork. That gives you a clean appearance and flexible air distribution across multiple areas. With a Daikin Duct Type AC, your interior designer controls where the grilles go, not the equipment.

Why it matters: your showroom, office or restaurant looks polished, and air reaches corners and zones that a single wall unit would miss.

Reliable Non-Inverter Operation

The non-inverter configuration is built for straightforward operation and dependable performance. The compressor runs at a fixed speed and cycles on and off to hold the set temperature.

Why it matters: non-inverter systems are simple to understand, maintain and repair. That makes them a practical choice for commercial installations that need robust, consistent air conditioning.

Commercial-Grade Performance

Daikin’s ducted air-conditioning design suits applications that need centralised air distribution, including offices, retail spaces, restaurants, halls and other commercial environments. The 3-phase power supply supports stable operation at this capacity.

Why it matters: you get equipment designed for long operating hours and busy commercial settings, not just light residential use.

Who Should Choose the Daikin 3.8 Ton Duct Type AC?

This system is a strong fit if you:

• Manage an office, showroom, shop or hall that needs cooling and heating from one system
• Want hidden equipment and a clean ceiling finish
• Need to serve several connected areas from one indoor unit
• Have access to a 3-phase power supply
• Prefer the simplicity and easy servicing of non-inverter technology

Key Features and What They Mean for You

Feature	What it means for your space
3.8 Ton cooling capacity	Enough output for medium to large commercial areas, subject to a proper heat load calculation
Non-inverter operation	Simple, dependable performance with straightforward maintenance
Heat & Cool functionality	One system for summer cooling and winter heating
Duct type design	Air reaches multiple zones through concealed ductwork
3-phase power supply	Stable power delivery suited to commercial buildings
R410A refrigerant	Widely used HFC refrigerant that technicians know well
Concealed installation	Clean ceilings, with only grilles or diffusers visible
Flexible ducted air distribution	Grille placement can follow your interior layout
Commercial suitability	Built for offices, retail, restaurants and halls
Reliable year-round operation	Consistent comfort across Pakistan’s hot and cool seasons

Specifications: 3.8 Ton Duct Type AC Technical Details

Here are the core specifications of the Daikin 3.8 Ton Non-Inverter Duct Type AC, based on the FLQN125EXV1 indoor and RQ125DXY1 outdoor model pairing.

Specification	Details
Brand	Daikin
Model – Indoor	FLQN125EXV1
Model – Outdoor	RQ125DXY1
Capacity	3.8 Ton (approx. 45,600 BTU/h)
Type	Duct Type (Concealed Ceiling)
Technology	Non-Inverter
Operation	Heat & Cool
Refrigerant	R410A
Power Supply	3-Phase
Application	Commercial
Installation	Concealed Ducted

For detailed electrical ratings, airflow, external static pressure, dimensions and current pricing, contact our sales team. We will share the latest data sheet and a project-specific quotation.

Ideal Applications and Use Cases

A 3.8 Ton Duct Type AC suits spaces where you need strong, evenly spread comfort and a clean ceiling finish. Common applications include:

• Offices
• Showrooms
• Restaurants
• Retail stores
• Commercial halls
• Meeting and conference rooms
• Large residential spaces
• Other medium to large commercial areas

Real-World Scenarios

Corporate office floor: An open-plan workspace with a connected meeting room can be served through branched ductwork. Everyone gets steady comfort, and the ceiling stays tidy.

Automotive or retail showroom: Concealed equipment keeps attention on your products. Diffusers can be placed to cool display zones and customer seating evenly, even during peak summer footfall.

Restaurant or café: Ducted air reaches the dining area without bulky wall units. Heating mode keeps guests comfortable on cold winter evenings.

Commercial or event hall: A single ducted system delivers consistent temperatures across a wide floor area that would otherwise need several split units.

How to Size a 3.8 Ton Duct Type AC Correctly

Tonnage alone does not decide whether a system suits your space. Correct sizing depends on:

• Floor area and ceiling height
• Number of occupants
• Sun exposure and glazing
• Lighting and equipment heat
• Insulation quality
• Duct length and layout

An undersized unit struggles in peak heat, while an oversized one cycles too often and wastes energy. Our engineers carry out a heat load calculation and site survey before recommending this 3.8 Ton Duct Type AC, so you invest in the right capacity from day one.

Why Choose Workman Services for Your Daikin Duct AC Project

Buying the right equipment is only half the job. Performance depends on design, duct sizing, installation quality and ongoing service. Workman Services has provided HVAC&R and fire fighting solutions since 2006. Our team includes experienced designers, qualified sales engineers and certified technicians.

Here’s what we bring to your Daikin duct AC project:

• End-to-end delivery: system design, supply, installation, testing, commissioning and maintenance under one roof
• Proper planning and coordination: heat load calculation, duct design and coordination with your contractors and interior teams
• Quality brands: we work with trusted brands to ensure performance, efficiency and durability
• Trusted technicians: certified, skilled engineers who handle ducting, piping and 3-phase electrical connections correctly
• Always on time: we respect project deadlines and complete work efficiently
• Long-term savings: correct installation helps you avoid costly repairs and replacements later
• Ongoing customer support: maintenance and after-sales service to keep your system running

Our project portfolio includes HVAC and fire fighting works at Nishat Galleria Mall, Seran Packages, Liberty Books and Realme at Dolmen Mall, and Haseens at Giga Mall. We have branches in Lahore, Rawalpindi and Faisalabad, plus a presence in the UAE.

Frequently Asked Questions

What is a Daikin Duct Type AC?

It is a concealed, ceiling-mounted air conditioning system. It sends cooled or heated air through ductwork to grilles or diffusers in one or more rooms. Only the grilles are visible, so the space keeps a clean, professional look.

Does this Daikin model provide both heating and cooling?

Yes. The FLQN125EXV1 / RQ125DXY1 is a Heat & Cool model. It cools in summer and heats in winter, offering year-round comfort from a single system.

What is the difference between inverter and non-inverter duct ACs?

A non-inverter system runs its compressor at a fixed speed and switches on and off to maintain temperature. An inverter system adjusts compressor speed continuously. The Daikin 3.8 Ton Non-Inverter Duct Type AC offers simple, dependable operation and straightforward servicing, which many commercial users value.

What power supply does the 3.8 Ton Duct Type AC need?

The RQ125DXY1 outdoor unit requires a 3-phase power supply. Our team can check your site’s electrical setup during the survey.

Which refrigerant does it use?

It uses R410A, a widely used HFC refrigerant that trained HVAC technicians in Pakistan are familiar with.

How much area can a 3.8 ton duct AC cover?

Coverage depends on heat load factors such as occupancy, sun exposure, ceiling height, insulation and equipment. A professional heat load calculation is the most reliable way to confirm whether 3.8 tons suits your space.

Is a Daikin duct AC suitable for homes?

Yes. While it is designed for commercial use, it also suits large residential spaces such as luxury villas and open-plan living areas, provided a 3-phase supply is available.

Do you provide installation and maintenance in Pakistan?

Yes. Workman Services provides supply, ducting, installation, testing, commissioning and maintenance across Lahore, Rawalpindi and Faisalabad.

Get Pricing and Book a Site Survey

If you’re planning a new office, showroom, restaurant or hall, the Daikin 3.8 Ton Duct Type AC offers powerful heating and cooling, a clean concealed finish and dependable commercial-grade performance. Let our engineers size, design and install it properly so you get the comfort you’re paying for.

Call or WhatsApp: +92 306 4410583
Email: info@workmanservices.com.pk
Visit: M1, M2 Bara Tower, 36 Queens Road, Abid Market, Lahore

Request your quotation today and get expert advice on the right system for your project.

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