R4S - The HVAC Doctor

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R4S - The HVAC Doctor

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- Having Chiller Problems?
- Need HVAC Maintenance?
- VRF Not working properly?
- Need an HVAC repair work?
- Need Spare Parts? The HVAC Doctor is in the town.

R4S Technical Solutions Ltd. can fix your HVAC need right away! R4S Technical Solutions LTD. is a concern company of Tritech Building Services LTD. The main objective of the company is to provide services in the field of HVAC (Heating, Ventilation, and Air-conditioning).

22/09/2026

Have you reviewed your HVAC system's full-year performance yet?
What services were completed, where improvement is needed, and what the plan should be for next year — R4S's year-end
review gives you the complete picture, so next year's maintenance planning becomes far more effective.
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Complete Annual Performance Summary: A full review of the year's service history and results.
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Cost & Downtime Analysis: Identifying where costs can be reduced.
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Next Year's Maintenance Calendar: Guidance for building a planned schedule.
Start planning next year's HVAC with R4S's year-end review.
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Contact Us: 01786337700
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Hotline: 09610441044
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Email: [email protected]
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Web: www.r4sbd.com

21/09/2026

You don't have to replace your entire old system to modernize it — retrofitting makes it possible.
Retrofitting is a far more cost-effective alternative to a full HVAC replacement, allowing you to improve performance and
energy efficiency while reusing your existing infrastructure.
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Existing System Assessment: Identifying components ready for an upgrade.
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Smart Control Upgrade: Replacing old controls with modern digital systems.
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Energy Efficiency Improvement: Achieving better performance at lower cost.
Want to modernize your old system? Learn about R4S's retrofit solutions.
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Contact Us: 01786337700
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Hotline: 09610441044
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Email: [email protected]
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Web: www.r4sbd.com

20/09/2026

Even a slight temperature swing in cold storage can mean major losses.
The reliability of an industrial refrigeration system is directly tied to protecting product quality. R4S's cold storage
maintenance service works to keep temperatures stable and prevent unexpected failures.
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Temperature Stability Monitoring: Maintaining temperature within the required range.
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Defrost System Check: Regular inspection to prevent ice build-up issues.
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Backup & Fail-Safe Verification: Confirming system readiness for emergencies.
Need cold storage or industrial refrigeration maintenance? Call R4S.
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Contact Us: 01786337700
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Hotline: 09610441044
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Email: [email protected]
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Web: www.r4sbd.com

19/09/2026

Got questions about your building's HVAC system? Your first consultation is completely free.
For new clients, R4S offers a free consultation session where your building's actual HVAC needs are assessed and the right
direction provided — with no obligation at all.
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No-Obligation Site Visit: A free initial assessment opportunity.
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Customized Recommendations: Advice tailored to your specific needs.
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Transparent Cost Estimate: A clear picture with no hidden charges.
Book your free HVAC consultation with R4S today.
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Contact Us: 01786337700
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Hotline: 09610441044
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Email: [email protected]
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Web: www.r4sbd.com

18/09/2026

Even if an HVAC issue strikes at midnight, R4S's hotline is right there for you.
Being able to reach someone quickly during an emergency is what matters most. R4S's 24/7 customer support hotline is
always ready to handle your questions, complaints, or urgent service requests.
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24/7 Call Support: Reach us any time, day or night.
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Fast Ticket Logging System: Every complaint tracked for quick resolution.
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Follow-Up & Updates: Regular communication until the issue is fully resolved.
Facing an HVAC issue any time? Call R4S's hotline — we're always ready.
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Contact Us: 01786337700
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Hotline: 09610441044
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Email: [email protected]
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Web: www.r4sbd.com

17/09/2026

One small faulty PCB can shut down the entire unit.
Often, repairing just the control board is far more cost-effective than replacing the whole unit. R4S's electronics team
diagnoses PCB issues and repairs wherever possible, saving you unnecessary expense.
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Component-Level Diagnosis: Identifying the exact faulty component.
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Soldering & Repair: Precise repair work by experienced hands.
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Post-Repair Function Test: Full testing before the board goes back in.
HVAC control board damaged? Talk to R4S before replacing the whole unit.
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Contact Us: 01786337700
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Hotline: 09610441044
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Email: [email protected]
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Web: www.r4sbd.com

16/09/2026

Replacing a compressor isn't just about swapping parts — proper installation is what really
matters.
Compressor or motor replacement is a delicate job, and any error can damage the whole system again. R4S not only uses
genuine parts but ensures the entire process is handled by experienced technicians.
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Genuine OEM Compressor/Motor: Using certified parts that meet manufacturer standards.
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Correct Installation Process: Full process including vacuuming, recharging, and leak testing.
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Warranty-Backed Service: Assurance provided on all replaced parts.
Need a compressor or motor replacement? Trust only R4S.
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Contact Us: 01786337700
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Hotline: 09610441044
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Email: [email protected]
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Web: www.r4sbd.com

15/09/2026

Getting the chiller plant setup right from day one matters most for large commercial buildings.
Setting up a new chiller plant is a complex process — selecting the right capacity, designing the piping network, and
integrating electrical systems all have to be done precisely. R4S manages this entire process end-to-end.
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Capacity Planning & Equipment Selection: Choosing the right chiller for your building's demand.
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Piping & Pumping Network Installation: Setting up an efficient water distribution system.
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Commissioning & Performance Validation: Full system testing before go-live.
Make R4S your partner for your next chiller plant project.
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Contact Us: 01786337700
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Hotline: 09610441044
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Email: [email protected]
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Web: www.r4sbd.com

14/09/2026

From planning to installation — a complete VRF system for your new building or office, all in one
place.
The right VRF system design depends on building load, layout, and usage patterns. R4S provides engineering consultation
from day one to design a system that's reliable and energy-efficient for the long term.
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Load Calculation & System Design: Planning based on the building's actual cooling load.
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Piping & Zoning Layout: Correct routing for efficient energy distribution.
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Turnkey Installation Service: Full responsibility from design through installation.
Need a VRF system for your new project? Talk to R4S's engineering team.
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Contact Us: 01786337700
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Hotline: 09610441044
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Email: [email protected]
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Web: www.r4sbd.com

13/09/2026

What the eye can't see, a thermal camera catches every time.
Loose electrical connections, overheating components, or uneven insulation are hard to spot with the naked eye. Thermal
imaging inspection identifies these hidden faults early, before they turn into bigger problems.
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Full-System Thermal Scan: Scanning electrical and mechanical components.
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Hotspot Identification: Pinpointing areas of abnormal temperature.
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Visual Report Delivery: A detailed report complete with images.
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Contact Us: 01786337700
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Hotline: 09610441044
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Email: [email protected]
Find hidden issues before they become major problems. Book a thermal inspection with R4S.
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Web: www.r4sbd.com

Address

26A/C, 1st Colony, Mazar Road, Darussalam, Mirpur/1
Dhaka
1216

Telephone

+8809610441044

Website

https://r4sbd.com/, https://www.linkedin.com/company/request4services/

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