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  1. #1
    Join Date
    Sep 2011
    Posts
    59

    Looking for some kind of alarm system for condensers

    I have a customer who owns a couple apartment buildings and some office buildings near bad parts of town. I have had to replace so many condensers already that I'm pretty much more pissed off than he is. We're down to 2 condensers left in storage, (out of 10 we bought last year to keep around.) Whats the best way to secure a condenser? Loss of pressure alarm, loss of power, tree chair with a high powered sniper rifle? Does anyone know brands, or a website to buy them? Cages dont work as it seems these crackheads will rip them apart with their teeth.. Between the time a tenant heard the lineset being cut until they were gone with a unit couple nights ago, only a minute had gone by.
    Any suggestions would be greatly appreciated.

  2. #2
    Join Date
    Aug 2012
    Location
    TN
    Posts
    2
    I was wondering about this as well. A pressure sensing wireless alarm seems like a very good direction to go in but there would have to be some kind of audible alarm or straight to owner response. There a market for it, so i'm sure someone sells it. Anyone with any info please post.

  3. #3
    Join Date
    Feb 2004
    Location
    Pleasantville, NY
    Posts
    26

    Power loss sensor

    The unit will require a power disconnect to remove. You might start there with a box cover sensor connected to a local alarm and security dialer. A silent dialer will give the police time to respond during disconnect, and haul away. You could GPS the unit. You can put shock detectors on the enclosure. If it was broken you might call an HVAC expert. If it is stolen you might call a security expert.
    John Cockerill

  4. #4
    Join Date
    Apr 2001
    Location
    MINN
    Posts
    936
    How about a low psi switch hooked to an alarm

  5. #5
    Join Date
    Mar 2007
    Location
    Sterling Heights, MI
    Posts
    141

    Pressure & Power Alarm.

    acwatchdog.com system will watch low voltage, high voltage and pressure.
    Better Service Through Knowledge...
    RSES, The HVACR Training Authority. www.rses.org

  6. #6
    Join Date
    May 2000
    Location
    Indianapolis, IN, USA
    Posts
    33,898

  7. #7
    Join Date
    Feb 2012
    Location
    Toronto Canada
    Posts
    1,090
    The Member SIX Posted a whole write up on this same situation Just this Month. search for it I believe it is in the wall of pride section.

    I don't get it how they can get threw a cage and disconnect a unit with out being seen?
    Have you heard how loud a cut linset is?

    Do you have pics of them mounted before the theft?

  8. #8
    Join Date
    Jan 2010
    Location
    Central North Carolina
    Posts
    46

    Tie the condensing unit down as a start...

    I have installed two units where the owner wanted to use a silent alarm system and secure the units to the ground.

    What I did was take out one compressor bolt and run a threaded rod through it. The owners burried a piece of steel
    (one was a lawn mower blade) in two concrete blocks and then cover that with concrete all under the pad. The
    threaded rod just connected the condenser unit to 160-200 lbs. of concrete.

    I bolted the compressor down with the threaded rod and then further up the rod put a nut and jam nut and welded
    the nuts together.

    The idea is the silent alarm goes off as soon as the t-stat wire is cut/torn and the theif is taken by surprise when
    the unit won't budge and it takes a lot more time and effort to move it than they thoguht it would.

    The owner/police are given a little more time to get there before the thief leaves -or- the thief gives up and leaves
    without taking the condensing unit.

    Either you catch the crook or you still have your condensing unit. You have to re-install it, but you don't have
    to buy a new one.

  9. #9
    Join Date
    Mar 2008
    Location
    NC
    Posts
    1,460
    Maybe the manufacturer's should start installing Lojack as an option. And remember, this was my idea so I'm entitled to all the royalties.

  10. #10
    Join Date
    Feb 2012
    Location
    Toronto Canada
    Posts
    1,090
    Smart Idea But nothing a chain and Truck wouldn't fix. I could still steal that unit in under a Minute I bet.

    I was talking to PapaFuse

  11. #11
    Join Date
    Mar 2008
    Location
    NC
    Posts
    1,460
    Exactly. you'll never be able to stop the thefts, but maybe they can start catching the people doing the crime.

  12. #12
    Join Date
    Aug 2012
    Location
    Hot Springs, Arkansas, United States
    Posts
    55
    A small limit switch like a lid switch on a washing machine on the disconnect door to the line side> then through the flex> to an alarm (Radio Shack) in the condenser? I made something similar for a really rough apartment complex one time. They stole the alarm (pretty red fire bell) while it was going off.

  13. #13
    Join Date
    May 2011
    Location
    Oklahoma
    Posts
    362
    Quote Originally Posted by PapaFuse View Post
    I have installed two units where the owner wanted to use a silent alarm system and secure the units to the ground.

    What I did was take out one compressor bolt and run a threaded rod through it. The owners burried a piece of steel
    (one was a lawn mower blade) in two concrete blocks and then cover that with concrete all under the pad. The
    threaded rod just connected the condenser unit to 160-200 lbs. of concrete.

    I bolted the compressor down with the threaded rod and then further up the rod put a nut and jam nut and welded
    the nuts together.

    The idea is the silent alarm goes off as soon as the t-stat wire is cut/torn and the theif is taken by surprise when
    the unit won't budge and it takes a lot more time and effort to move it than they thoguht it would.

    The owner/police are given a little more time to get there before the thief leaves -or- the thief gives up and leaves
    without taking the condensing unit.

    Either you catch the crook or you still have your condensing unit. You have to re-install it, but you don't have
    to buy a new one.
    Unless you piss them off enough to destroy it in place. At least YOU'D get the scrap money and not them!

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