Securing AC condensers
March 31, 2008
Nothing hurts a landlord’s pocketbook or pride like being the victim of theft or vandalism. The main security issue facing landlords in St. Louis and around the country is copper theft, but there are many other temping targets at any property. One particularly expensive and “easy to steal” component are AC condensers.
Thankfully, there are two very simple ways to protect yourself. One is to put your condensers on the roof of the property. What thieves can’t easily reach, they are unlikely to steal. Unfortunately this method is not very cost effective if you have an existing HVAC system. Another tactic, which is more adaptable, is to enclose your condensers in a cast-iron cage to deter theft. Not the most beautiful method of protection, but effective nonetheless.
If you are interested in installing one of these cages at your property, it will set you back about $250 for each condenser (installed). I’ve heard good things about Superior Security Iron (314-382-3081), but just about any ironworks should have these one hand or available for order. As with anything, you will likely find bulk discounts if you shop around. Might be a worthy investment for a little peace of mind.
When there’s mention of putting a condenser unit on the roof, I always thing of something I learned as an A/C repairman and installer (years & years ago..
When the condenser is above the evaporator ( the coil in the furnace), the oil in the refrigerant from the compressor tends to get trapped in the lower parts of the system. This deprives the compressor of the oil which is essential to the longevity of the machine.
It’s necessary to install *oil traps* in the suction line to collect that oil in “puddles” so the returning freon can move it back to the compressor in the condensing unit on the roof. These will be little “S” shapped bends in the copper pipe, much like the traps on drains. These should be bent into the copper at about 10 foot intervals. It’s also good to have a bit more compressor oil put in the system during the original installation. There is a trick to doing this, and any competant A/C mechanic should know all about this. They may not be doing this these days, though, because it’s a good way to get to sell another unit sooner.
Good luck to all.
Dave Lewis
in Soulard