Heat Detector Garage - Ideal Location

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This is a follow on to my earlier post about garage heat detector.

I’m looking for advice on where to place the System Sensor 5604 in my garage. Below is a rough (not perfect measurements but close) diagram of my garage layout.

The tricky thing here is the ceiling has two different heights. Should it go on the lower or higher ceiling? I’m guessing higher is better?

Note we never park cars in here - but we have the gas appliances, electrical panel, work bench, and lawn equipment storage all happening here - all potential fire sources or accelerants.

The A and B on the diagram are the two locations I was thinking - but open to ideas. Is installing two massive overkill for such a small space?

Which location would you advise?

(I’ll also say the lower ceiling area is 1000% easier to access when I need to change a battery in the PowerG sensor! (primarily because of other shelving/items in the garage)

Thank you.

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I would recommend at least two in the areas you had marked.

From reading NFPA72, different ceiling height should be considered their own areas. Following their guidelines, you would need a third one located in the 10 foot ceiling area where the furnace and water heater are located.

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Thanks Vidail,
Actually, I was wrong in my diagram! The ceiling above/near the furnace is actually at that same 14ft height. :face_with_hand_over_mouth:

So in that case, I’m thinking two would work well. One centered in the 10ft ceiling area and a second centered in the 14ft area. This would seem to align with your recommendation for two as well.

I think that is what I’ll proceed with at this point. (Today there is nothing so this has to be better!) Thanks again.