Dual Fuel Thermostat for Heat Pump + Furnace Systems
Background
Heat pumps have been widely deployed in recent years as a more efficient and economical heating and cooling solution, yet many households still retain another set of conventional cooling and heating devices. This furnace and heat pump manufacturer needed a thermostat that controls both sets of equipment simultaneously and switches between them for optimal cost-effectiveness — without sacrificing comfort.
Project Requirements
- A special thermostat to control both sets of equipment simultaneously and switch between them for optimal cost-effectiveness without sacrificing comfort.
- The system must acquire the outdoor temperature as the prerequisite of its operation mode.
- A specific Wi-Fi module is required to follow the manufacturer’s designated communication protocol and interface with their existing backend server.
- The thermostat must be able to control a humidifier or dehumidifier.
Our Solution
OWON customized the thermostat based on one of its existing models, allowing the new device to be compatible with the client's system: firmware rewritten for dual-fuel switching logic, outdoor temperature obtained from online data or a wireless outdoor sensor, the client's designated Wi-Fi module transmitting to their backend server over MQTT, and extra relays and connection terminals added for humidifier/dehumidifier control.
- Rewrote the thermostat’s firmware according to the equipment manufacturer’s specified control logic.
- Obtained the outdoor temperature either from online data or a wireless outdoor temperature sensor.
- Replaced the original communication module with the designated Wi-Fi module, transmitting information to the client’s backend server following the MQTT protocol.
- Customized the hardware by adding more relays and connection terminals to support both humidifiers and dehumidifiers.
Key Results
Still have questions?
Our engineers usually reply within one business day. Reach us however suits you best.