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Home
About
Trust & Credibility
- Sunlit Price List
Services
Portfolio
Blog
Contact

Sunlit Insights - Blog, News & Case Studies

Sunlit Insights brings expert blogs, industry news, and real case studies on interior design in Dhaka—practical ideas, trends, and smart design decisions.

A detail diagram of AC Tonnage Calculator engineering guide for calculating AC load and airflow.

রুমের মাপ অনুযায়ী সঠিক এসি (AC) নির্বাচনের গাইড: AC Tonnage Calculator

MARC 14 March 2026

আপনার রুমের জন্য ১.৫ টন নাকি ২ টন এসি লাগবে? জানুন AC Tonnage ক্যালকুলেশন করার সহজ নিয়ম এবং সঠিক এসি কেনার প্রফেশনাল টিপস।

Infographic highlighting differences between Inverter and Non-Inverter AC units

ইনভার্টার এসি (Inverter AC): বিদ্যুৎ সাশ্রয়ে ইনভার্টার PCB এবং কম্প্রেসরের অভ্যন্তরীণ মেকানিজম।

Farhan Momen 12 March 2026

এসি কেনার সময় আমরা সবাই শুনি “ইনভার্টার এসি বিদ্যুৎ সাশ্রয় করে”। কিন্তু একজন টেকনিশিয়ান বা ইঞ্জিনিয়ারের দৃষ্টিতে এর আসল রহস্য কোথায়? কেন একটি Inverter AC সাধারণ এসির চেয়ে আলাদা? আজ আমরা আলোচনা করব ইনভার্টার এসির ভেতরের সেই ইন্টেলিজেন্ট মেকানিজম নিয়ে।

A professional technical infographic of a VRF HVAC system showing a rooftop outdoor unit with an inverter compressor connected via branch piping to wall-mounted, ceiling cassette, and concealed duct indoor units.

Understanding VRF Systems: The Efficient Climate Control in Dhaka

MARC 8 March 2026

A VRF system is a highly sophisticated version of a multi-split air conditioning system. Unlike traditional systems that are either “on” or “off,” VRF technology allows a single outdoor unit to connect to multiple indoor units (often dozens) and precisely modulate the amount of refrigerant flowing to each one.

A technical infographic showing the process of AC gas Refill with a manifold gauge, charging scale, refrigerant tank, and vacuum pump connected to an outdoor unit.

AC Gas Refill Guide 2026: Costs, Safety Standards, and Expert Maintenance

MARC 5 March 2026

Get the latest 2025 AC gas refill prices in Dhaka. Learn why your AC leaks, the difference between R-22 and R-32, and how Sunlit Pvt. Ltd. ensures safety.

High-rise servicing with AC Hanging charge in Dhaka using safety harness and rope access for outdoor unit maintenance

AC Hanging Charge in Dhaka: What It Really Means, When It Applies, and Why It Costs More

MARC 2 March 2026

AC hanging charge in Dhaka is the additional cost applied when AC outdoor units must be serviced from height using rope access or safety harnesses, typically above the 8th floor, due to higher risk, manpower, and safety requirements.

এসি কীভাবে কাজ করে – ইনডোর ও আউটডোর ইউনিটের HVAC সাইকেল ডায়াগ্রাম

এসি কীভাবে ঘর ঠান্ডা করে? (HVAC) কাজ করার সহজ নিয়ম ও টেকনিক্যাল গাইড

MARC 28 February 2026

এসি আসলে বাতাস ঠান্ডা তৈরি করে না। এটি ঘরের গরম বাতাসের তাপ শোষণ করে আউটডোর ইউনিট দিয়ে বাইরে বের করে দেয়। ইনডোর ইউনিটের Evaporator Coil তাপ নেয়, Compressor সেই তাপযুক্ত গ্যাসকে চাপে গরম করে, Condenser বাইরে তাপ ছাড়ে, আর Expansion Valve গ্যাসকে আবার ঠান্ডা করে ইনডোর ইউনিটে পাঠায়। এই চক্র চলতে থাকে যতক্ষণ না রুম নির্ধারিত তাপমাত্রায় পৌঁছায়।

The Dhaka Guide to Slashing AC Electricity Bills Without Sacrificing Comfort

MARC 25 February 2026

To reduce AC electricity bills in Dhaka (2026), switch to Inverter AC technology, set your thermostat at 24°C–26°C, follow BNBC 2020 thermal insulation standards, and service your unit before summer.

AC Price and Installation Cost in Bangladesh (2026 Updated Guide)

Farhan Momen 22 February 2026

In Dhaka especially, 1.5 ton inverter split ACs have become the standard residential choice.

This guide provides updated 2026 market pricing, installation cost, servicing charges, gas refill cost, and brand comparison based on current Bangladesh retail listings and service provider data.

Authentic AC Maintenance Protocols vs. AC gas refill scam in Dhaka

MARC 18 February 2026

An air conditioner does not consume gas. Refrigerant circulates in a sealed closed-loop system.
If gas is genuinely low, there must be a physical leak.

A technician performing a high-pressure jet wash on a dirty outdoor air conditioning unit to remove accumulated dust and debris. for ac service and maintenance.

Advanced AC Service and Maintenance in Dhaka : 40+ Years of Professional HVAC Expertise

MARC 12 February 2026

Stop the break-fix cycle. Learn Sunlit’s technical approach to HVAC preventative maintenance in Dhaka, focusing on advanced protocols like Inverter checks, Dhaka Dust Mitigation, and Energy Audits to maximize asset longevity and operational efficiency

HVAC Refrigerant Charging and System Evacuation infographic

Research Paper: Optimization of Refrigerant Charging and System Evacuation in HVAC Systems

MARC 7 February 2026

This paper investigates the critical procedures of system evacuation and refrigerant charging (commonly known as AC gas filling). It explores the thermodynamic necessity of removing non-condensables and moisture to ensure system longevity and efficiency. The study outlines the technical workflow, diagnostic indicators for recharging, and the mechanical implications of improper servicing.

Infographic demonstration of the best HVAC service company

The Engineering Legacy of Comfort: Why Sunlit Pvt. Ltd. Defines the Gold Standard for HVAC in Dhaka

MARC 2 February 2026

Sunlit Pvt. Ltd. bridges the gap between raw construction power and delicate mechanical precision, offering a “one-window” engineering solution that safeguards your investment.