HVAC Spare Parts & Refrigerant

Professional & Fast HVAC Servicing of Any Brand VRF or Chiller

HVAC maintenance Bangladesh, Dhaka HVAC services, Commercial HVAC maintenance, Industrial HVAC maintenance, Residential HVAC maintenance, Air conditioning maintenance Bangladesh, Chiller maintenance Bangladesh, HVAC spare parts Bangladesh, Duct cleaning Bangladesh, Water treatment for HVAC systems Bangladesh

The Largest HVAC Maintenance Company in Bangladesh

VRF Servicing Banner

No. 1 VRF Air Conditioner Servicing Company in Bangladesh for Any Brand

Chiller Servicing

Get Any Brand Chiller Servicing from Factory Trained Experts

About Us

R4S- stands for ‘Request For Service’is currently the largest HVAC maintenance service provider in Bangladesh. ‘R4S’ has started its journey to achieve the highest standard in providing quality services to your HVAC system.

We’re committed to protecting people’s health & wellbeing while also providing long-term solutions that will help us stay on top of the industry. R4S understands the unique opportunity to make a contribution in environmental measures by bringing instant and innovative solutions to various types of industrial, commercial and residential sitesas a pioneer in the HVAC sector.

The prime values of R4S makes us to be the largest HVAC servicing team in Bangladesh at present.This is where R4S comes in, assisting in the achievement of the most important goals. We make your buildings and HVAC system smarter with a wide range of technologies and digital solutions.


VRF AC Maintenance Service

VRF AC Maintenance Service

R4S implies that VRF/VRV system maintenance must be carried out by their professional team who possess extensive experience. We also offer trustworthy and authenticVRF/VRV spare parts that are tailored to your air conditioner’s needs.Besides providing quality maintenance services, our expert team will additionally provide all required knowledge about how to operate your system.

Chiller Maintenance Service

Chiller Maintenance Service

R4S provides chiller maintenance and authentic spare parts that are specifically designed for your system. The post maintenance services of chiller increase performance by requiring to operate little to achieve its ultimate cooling sensation.You may order elements suited to your system’s needs by visiting our website and request for installation instantly.

HVAC Spare Parts Supply

HVAC Spare Parts Supply

R4S is the name you can trust when it comes to finding the greatest refrigeration systems and genuine HVAC spare parts. Because we specialize in the selling of these items, we have a comprehensive understanding of the functions of the various models and their uses, allowing us to provide you with the assistance you want.

Duct Cleaning Sanitization

Duct Cleaning & Sanitization

R4S provide sanitation and duct cleaning, along with setup, replacement parts, and maintenance solutions for a variety of air conditioning systems that are used in residential, industrial, and commercial settings. Our commercial HVAC system sanitization services will safeguard your organization and enhance the quality of the air for your clients and staff. The sanitation process is carried out with FDA certified chemicals.

Descaling of Chiller

Descaling of Chiller & Boiler

Protective maintenance cleanup with our descaling services will assure maximum efficiency by lowering approach tension and temperature to as designed levels and extending the equipment’s life.Our expertise team will detect and eliminate all flaws as soon as they appear, saving your time, trouble, and money on maintenance in the long run. We are the leading service provider in Bangladesh.

Water Quality Management

Water Quality Management

R4S water quality management addresses harsh water issues such as scale, corrosion, salinity, acidity, pH, and iron in cooling towers, chillers, and boilers to improve water efficiency.R4S delivers a highly sophisticated scale and corrosion inhibitor that works in tandem with R4S biocide treatments to give important performance in the management of bacteria.

Anti Corrosion Treatment

Anti Corrosion Treatment

R4S believe that shielding from hostile elements is essential to maintain the HVAC equipment’s longevity and dependability in certain settings and we are here to deliver heat exchanger anti corrosion treatment. Expert team of R4S handles the issue with a variety of solutions that provide optimum safety as well as unit longevity and dependability. R4S, in particular, provides distinct degrees of corrosion prevention.

Cleaning Fins Filter

Cleaning Fins & Filter

R4S entitles that the cleaning of fins and filter is the most obvious maintenance to make sure that the outdoor coil is clean so that the air flow through the outdoor coil is correct. As a result, it will allow the compressor and the entire air conditioner system to work efficiently and help outflow breatheable air at its designed rate, avoiding excessive run time.

Maintenance Contract

HVAC Maintenance Contracts

R4S provide two types of contracts signed for commercial customer. One is Annual Maintenance Contract (AMC) and another one is Case to Case services. We have several registered customers who enjoys the benefits of convenient service charge along with several other benefits. The price rate of our service charge varies in terms of our maintenance contracts.

Why You Should Choose R4S As Your HVAC Maintenance Partner?

Quality and expertise are two of the most critical factors whether itis for people or machines. Unsatisfactory goods, services, or machines can cause severe system failure, increasing operational costs and lowering efficiency.

R4S has put together a team of capable and mechanically skilled applicants that can provide top-notch maintenance services. We have demonstrated our worth on a number of large-scale, successful HVAC projects.

Our employees are trained to communicate in a professional and helpful manner, so you may freely discuss your concerns with us.

Our expert field employees are also well-equipped with relevant tools, dressed professionally in corporate clothes, and keep identification with them at all times.

Followings are some fruitful reasons that why should you choose R4S:

Largest HVAC Servicing Team In Bangladesh

R4S has risen to the top of the HVAC market in Bangladesh because to our huge professional technician staff, which specializes in HVAC services, spare parts sales, and other air quality management.

Any Brand VRF & Chiller Service Solution

Our dynamite VRF & Chiller servicing remedy will surely help you boost the performance of your system, whether it's in a domestic, commercial, or industrial context.

Certified & Factory Trained Technical Team

Our licensed and factory-trained professional staff has completed several lucrative HVAC projects and has vast expertise.

Automated Customer Service With Online Portal

R4S has gathered together a workforce of qualified and technically inclined employees that can efficiently coordinate customer enquiries through an online management portal that is maintained in real time.


I just wanted to check up on the HVAC system services with you and couldn’t be happier with how everything turned out. Your company provided the most competitive quote and backed it up with superb service. The people that came out and installed spare parts of VRF/VRV air conditioner system were fantastic. They completed the task in a fraction of the time I anticipated and even scheduled a follow-up visit to deliver after sales services. Again, R4S performed up to its reputation from beginning to end, and I will refer you to everyone I know who needs their HVAC maintenance services or spare parts.

The contractor completed two days' load of service in one day, staying late and working hard! They're really decent men. Very well-behaved. Person A gave me advice on how to improve the efficiency of my ducting after their cleaning and sanitation process done. R4S is a great firm with great people.
It was a pleasure to work with R4S. They were really professional, punctual, and well-trained, as well as providing exceptional customer service. My new Chiller spare parts that they have installed and the maintenance services has exceeded my expectations. Highly recommended!
HVAC maintenance service
Professional & Fast

HVAC Servicing of Any Brand VRF or Chiller

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R4S BD is a 360’ servicing solutions for VRF Maintenance, Chiller Maintenance, and other HVACs to ensure better and long lasting performance.

We have custom packages for our maintenance services in which pricing varies. The benefits of these tailored packages are they are as per your needs and therefore you only pay for the maintenance services you need.

During our maintenance service if we come across any faulty parts while scanning you HVAC, we have spare parts that we can provide you with. You can directly purchase those spare parts from us.

We provide our HVAC maintenance service in all parts of the country. Whether it’s Dhaka or Chittagong or any other division, we are there for your need.

We have other maintenance services like Duct cleaning & Sanitization, descaling of chiller & boiler, anti-corrosion treatment, cleaning fins & filters and many more.

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