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 wireless open door sensor for a/c
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Su Rexorde
Starting Member

3 Posts

Posted - 02/07/2010 :  09:11:56 AM  Show Profile  Reply with Quote
I own a condo in a tropical climate. I am looking for a wireless sensor that shuts off the a/c when the door to the outside is open. I know this technology exists but I can't find it! Can anyone help?

Tfitzpatri8
Administrator

USA
8607 Posts

Posted - 02/07/2010 :  09:19:41 AM  Show Profile  Reply with Quote
Do you already have Insteon home automation equipment in your house? If so, you can link a TriggerLinc to your Insteon-enabled Venstar thermostat and use its two scene mode to change the thermostat set point when the door is open.

http://www.smarthome.com/2421/TriggerLinc-INSTEON-Wireless-Open-Close-Sensor/p.aspx
http://www.smarthome.com/2491T7/Venstar-Thermostat-INSTEON-Remote-Control-Thermostat-7-Day-Programmable/p.aspx
http://www.smarthome.com/2457D2/LampLinc-INSTEON-Plug-In-Lamp-Dimmer-Module-Dual-Band-2-Pin/p.aspx


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Su Rexorde
Starting Member

3 Posts

Posted - 02/07/2010 :  09:22:42 AM  Show Profile  Reply with Quote
No, I don't- I just found out about this product/company on Amazon and decided to ask about it. How hard/expensive would it be to set this up? I'd have to carry the parts with me to Mexico. (Thanks for your very quick response!)
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LeeG
Advanced Member

USA
2261 Posts

Posted - 02/07/2010 :  1:29:59 PM  Show Profile  Reply with Quote
You might want to shut off the air circulation fan when the door is opened to avoid pulling in hot outside air but to shut down the A/C compressor any time a door is opened will be hard on the compressor motor. The compressor motor may not start immediately after being stopped to allow the pressure to reduce before a start is attempted. Perhaps something that stops the air circulating fan immediately and stops the compressor only if the door is held open for more than 60 seconds. Without already having Insteon to build on it will be an expensive Insteon only approach. X10 would be less expensive but not reliable enough to control a major appliance like A/C in my opinion.

Lee G
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Su Rexorde
Starting Member

3 Posts

Posted - 02/07/2010 :  9:12:36 PM  Show Profile  Reply with Quote
Thank you! I really appreciate your input and expertise.
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caseyADH
New Member

USA
19 Posts

Posted - 02/09/2010 :  6:49:32 PM  Show Profile  Visit caseyADH's Homepage  Reply with Quote
There are many way to go about this, I would use a control system and a smart thermostat. With something like Homelogic you can sense when the door is open and turn thermostat to "off" if the door is opened. The best part about going with a system like homelogic is you can add cameras, security,etc. and access it from any pc or iphone anywhere in the world so you can keep an eye on your place when you are back in the states.

-Casey Webster
Souther California A/V Automation Dealer
http://www.advanceddigitalhomes.com

http://www.advanceddigitalhomes.com
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stusviews
Moderator

USA
11476 Posts

Posted - 02/09/2010 :  9:35:03 PM  Show Profile  Visit stusviews's Homepage  Reply with Quote
quote:
Originally posted by caseyADH

There are many way to go about this, I would use a control system and a smart thermostat. With something like Homelogic you can sense when the door is open and turn thermostat to "off" if the door is opened. The best part about going with a system like homelogic is you can add cameras, security,etc. and access it from any pc or iphone anywhere in the world so you can keep an eye on your place when you are back in the states.

-Casey Webster
Souther California A/V Automation Dealer
http://www.advanceddigitalhomes.com


Will that alleviate the problem of the compressor trying to kick in and out with the door swinging open and closed?

I've seen similar systems in hotels, but the door (or window) needs to held open to affect the system. Anyone know how they do it?

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caseyADH
New Member

USA
19 Posts

Posted - 02/10/2010 :  5:04:51 PM  Show Profile  Visit caseyADH's Homepage  Reply with Quote
you can write your scripting in homelogic to only trigger the on/off if the door/window is open for over 120 seconds or more.

http://www.advanceddigitalhomes.com
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Geo
Advanced Member

Canada
586 Posts

Posted - 12/04/2010 :  6:10:00 PM  Show Profile  Reply with Quote
I've worked on such a system for a hotel in Barbados. Essentially, there were PIR detector(s) - depending on the room or suite and a bunch of magnetic door switches. A fairly simple logic then decided based on things like "front door opened followed by a PIR detector sensing a person" whether the room was occupied or not. A/C was disabled, no ifs or buts, whenever the balcony door was not closed. Areas with airconditioning units in rooms (some parts of the hotel had air ducts with electrically controlled dampers in the rooms) had compressors set to about 10 minutes rest after it was stopped to prevent cycling.

GJN
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rachel12
Starting Member

1 Posts

Posted - 12/27/2010 :  02:24:00 AM  Show Profile  Reply with Quote
I also used the wireless sensor and the information helped me too much. I am also facing the problems in the system and above information is helping me to make best system. Thanks.

rachel
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alex_foley
Starting Member

6 Posts

Posted - 05/15/2011 :  12:15:30 PM  Show Profile  Reply with Quote
quote:
Originally posted by Su Rexorde

I own a condo in a tropical climate. I am looking for a wireless sensor that shuts off the a/c when the door to the outside is open. I know this technology exists but I can't find it! Can anyone help?



http://www.cqout.com/item.asp?id=12603164
http://www.youtube.com/watch?v=peT7Yq0XydM
http://www.youtube.com/watch?v=syuHTduT0S8
http://www.youtube.com/watch?v=Pi7U4L0WeOg

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