HVAC Performance Monitor Kit: Watch Your AC's Health from Your Phone

Every part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.

An underperforming air conditioner doesn't always announce itself — often, the room just never quite cools, humidity stays sticky, and the electricity bill creeps up. This kit turns your Arduino Uno into a wireless HVAC performance monitor. The DHT22 sensor captures temperature and humidity near the vent, and the HC-05 Bluetooth module beams those readings straight to your phone every two seconds, so you can spot a struggling AC before it becomes a breakdown.

What You'll Build

You'll wire a DHT22 temperature and humidity sensor to an Arduino Uno, pair it with an HC-05 Bluetooth module, and watch live climate data stream into a free serial Bluetooth terminal app on your phone. Whether it's checking if the bedroom AC actually reaches 24°C, diagnosing why the living room feels damp despite the split unit running, or simply showing off a wireless sensor project at a science fair, this kit gives you a working tool, not just a toy.

What You'll Learn

• Wiring a digital sensor (DHT22) to an Arduino and reading its data over a 1-wire interface
• Configuring an HC-05 Bluetooth module as a wireless serial bridge
• Writing Arduino sketches that format sensor data and transmit it via Bluetooth
• Using a serial Bluetooth terminal app to view live sensor streams on a smartphone

Kit Contents

Why Buy This Kit Instead of Sourcing Parts Separately

Who This Kit Is For

Students at ATL Tinkering Labs and CBSE schools who need a practical demonstration of wireless sensor networks will find this project simple to assemble and easy to explain. B.Tech ECE first-years can use it as a mini-project to understand Bluetooth serial communication. Even a 12-year-old maker curious about how an AC really performs can pick this up and build a monitor that parents actually find useful around the house.

Built and Backed by Compoden

Every Compoden kit ships with an AI build companion trained on this exact project — accessible via a QR code on the box, with WhatsApp and email backup. We've spent 10 years building projects for makers, schools, and institutions across India. If a part fails because of a manufacturing defect, replace it free within 7 days.