HVAC Performance Monitor Kit with Raspberry Pi 4 + Relay: Automate Your AC with Home Assistant

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

Imagine walking into a room and having your air conditioner or heater automatically adjust based on real-time temperature and humidity, without touching a remote. With this kit, you’ll build a fully functional HVAC performance monitor that uses a Raspberry Pi 4 to run Home Assistant, controls AC units via relays, and senses climate with a DHT22 sensor.

What You'll Build

A working home energy monitoring hub that displays indoor climate data on a dashboard, triggers your air conditioner via relay when temperature exceeds a set threshold, and logs historical trends. You'll have a hands-on, real-world project that can be expanded to control lights, fans, and other appliances, forming the backbone of a smart home.

What You'll Learn

• Flashing and configuring Home Assistant OS on a Raspberry Pi 4

HVAC — Pi 4 runs Home Assistant OS. GPIO relay control, Zigbee dongle support, automation rules for smart home.

What's in this kit

• Raspberry Pi 4 Model B 4GB
• 5V Relay Module x2
• DHT22
• 1N4007 Diode x5
• 10kΩ Resistors x5
• 40-pin GPIO Header
• M-F Wires x20
• MicroSD Card 32GB