# Motion-Sensitive Air Conditioning By Pearl | Published 2008-05-19 | Eco Source: Trend Hunter, https://www.trendhunter.com/trends/rising-tempatures-air-conditioning-only-where-you-are References: [technology.newscientist](http://technology.newscientist.com/article/dn13919-adapted-aircon-can-track-movement-in-the-home.html?DCMP=ILC-hmts&nsref=news1_head_dn13919) Why cool the whole house? With rising fuel costs, it makes sense to have [air-conditioning only where you are](https://www.trendhunter.com/trends/coolify-air). That *could* be done with motion sensors, but it would still cost too much for the average person. **Shwetal Patel** and his colleagues at the Georgia Institute of Technology, US have come up with a much cheaper alternative by simple modifications of a home's existing [heating, ventilation and air-conditioning (HVAC) system](https://www.trendhunter.com/trends/home-climate-control). The flow of cool air through the ducts in an empty house remains in a stable state. But the airflow is disturbed if a person is present, say opening and shutting doors. These small disturbances in the air flow can be tracked by placing five [air-pressure sensors](https://www.trendhunter.com/trends/aqara-presence-multisensor-fp300) in the filter of the HVAC system. Once the software is “trained” it can tell from the differential data coming from each of the sensors, which particular door was active 75-80% of the time. Not only can it tell which door was active but also when you walk through that door (60-75% of the time). This development could also make the house HVAC system a potential burglar alarm without having to buy a separate system. ## Trend Insights (Trend Hunter) - Score: 1.9/10 - Popularity: 10% | Activity: 40% | Freshness: 8% - Audience gender: 50% men, 50% women - Primary generations: Millennial - Top markets: North America, Europe, Asia ## Categories [Trend Hunter](https://www.trendhunter.com/trends) > [Eco](https://www.trendhunter.com/eco) ## Key Themes ### Key Themes Behind This Trend - **Motion-sensitive Air Conditioning:** Opportunity for HVAC companies to develop motion-sensing technology for more efficient and cost-effective air conditioning systems. - **Energy-saving Home Modifications:** Opportunity for home improvement companies to offer modifications to existing HVAC systems that save energy and reduce costs. - **Smart Home Security Integration:** Opportunity for security companies to integrate motion-sensitive HVAC systems into home security systems for enhanced protection. ### Where This Applies - **HVAC:** HVAC companies can capitalize on motion-sensing technology to offer innovative and energy-efficient air conditioning solutions. - **Home Improvement:** Home improvement companies can cater to the demand for energy-saving modifications for existing HVAC systems. - **Security:** Security companies can integrate motion-sensitive HVAC systems with home security systems to provide enhanced protection and convenience for homeowners. ## Related on Trend Hunter - [Indoor Air Conditioning Drones](https://www.trendhunter.com/trends/drone-ac.md) - [Targeted Cooling AC Systems](https://www.trendhunter.com/trends/lg-artcool-ai-air.md) - [Motion-Sensing Thermostat Sensors](https://www.trendhunter.com/trends/wyze-room-sensor.md) - [Roving Robotic AC Systems](https://www.trendhunter.com/trends/robot-air-conditioner.md) - [Accordion-Style Air Conditioners](https://www.trendhunter.com/trends/foldable-ac.md) - [Connected Aftermarket AC Controllers](https://www.trendhunter.com/trends/sensibo-airq.md) - [Environment-Analyzing Home Sensors](https://www.trendhunter.com/trends/ultrahuman-home.md) - [Tech-Driven Home Climate Systems](https://www.trendhunter.com/trends/home-climate-systems.md) - [Advanced Presence Sensors](https://www.trendhunter.com/trends/presence-multisensor-fp300.md)