25 Things Air Conditioning Repairmen Don’t Want You to Know!

1. Pick a Coil, Any Coil

This is a real moneymaker for unscrupulous repairmen!  A routine maintenance call can turn into a costly repair by puncturing a pinhole in the coil during the inspection.  He'll tell you that he has found a refrigerant leak and that there are three options.  If his kids don't need braces he will do you the favor of repairing the coil on site with a torch and some solder or he will sell you a new coil probably for up to $1000.00.  Now if you fall for the old "I'll patch this up for you this time but the copper is old and brittle so you'll probably be calling me next month to fix another leak," you may be tempted to spring for the new $4000.00 system. 

2. Absolute Power Corrupts Absolutely

A spike in the power grid or a power surge can shut down your unit temporarily; lightning is a frequent cause of this. The compressor can overheat and take as long as 24 hours to cool down before the unit will operate again. You heard us right; you can wait 24 hours and have the unit in essence repair itself! This is not always the case but if the temperature is bearable why not adopt a 'wait and see' attitude, it could save you some green!

 
3. It Happened One Night

You wake up in the morning and your system is blowing warm air and not much of that. What's going on?  Well, your unit could be frozen up…ice on the coil. But what could have caused it to happen?  Some repairmen will tell you not to worry it was just a little low on refrigerant; they'll charge it up for you and ask you to call them if it happens again. While this may be the actual cause another possibility is that the temperature could have dipped during the night, causing the condensation to freeze and especially so if coupled with a semi-clogged filter, limiting the flow of air.  A perfectly good air-conditioning unit can freeze up.  The fix: simply turn the thermostat from cool to fan and allow the warm air to melt the ice from the coil.  When the airflow through the vents returns to it's normal volume, turn it back to cool and enjoy the savings!  Not only have we heard of some repairmen selling expensive repairs and new units on events such as these but we have also had customers demand to be sold a new system to keep it from freezing up again and getting angry when the service tech refused to sell it to them!  Guess what… there are no shortages of second opinions out there to tell them that they did in fact need that new system.

 
4. 3… 2… 1… Contact!

Electrical contact cleaner spray can work wonders on the switches and modules in your system. But a simple spray of this cleaner on your fan motor will wipe out the bearing lubrication and you'll be calling them back within 30 days to replace the fan or the system depending on the salesman.

 
5.  Water in the Refrigerant

The serviceman draws a vacuum on an empty refrigerant tank then he places some water in the bottom of the container and fills the remainder of the tank with refrigerant. This is the equivalent of a computer virus for an AC unit! The water reacts with the refrigerant and turns it to acid, which immediately kills your compressor and your wallet.

 
6. Check the Breaker

Sounds simple doesn't it?  You would be surprised how many people forget to check the circuit breaker before calling a repairman.  If you're lucky, the tech will call it to your attention and charge you a minimum fee for coming out.  However, there are people out there who have been sold a new system when the flip of a switch could have fixed the problem.  One elderly woman was grateful that the company would 'allow' her to pay for the new system by signing over her social security checks for six months in a row!  Good thing she called a different company to get another price quote.  The second service man discovered a freshly clipped wire inside the unit.  He fixed the wire, turned on the breaker and Mrs. "B" got to keep her checks.
 
7. You and Your Thermostat

Mechanical thermostats have several degrees built in the adjustment range.  So to properly adjust the temperature you should move the lever past the desired temperature and then back to the specific setting.
 
8. Maintenance Contracts

(Preventative maintenance contracts Service Contracts Extended warranties)
Maintenance contracts are great if you are dealing with a reputable firm. However, there is a flipside to the coin.  Any of the above tricks can be brought into play during a routine maintenance call.  Since you are locked into a contract with one company, it is unlikely that you will call for a second opinion and remember maintenance is different from repairs!
 
9. Freeze, Dirt Bag!

A clogged filter reduces the amount of airflow through the coil and causes the coil to freeze up. Change those darn filters regularly and check them before you assume the worst and call a service tech!
 
10. Clean up Your own Backyard

Grass and debris around the outside condenser unit seriously reduces efficiency and can cause increased wear and tear on your equipment.
 
11. Out of Sight out of Money

Are you starving your system from airflow? Some folks insist on building enclosures around the condenser unit, mostly for aesthetics and sometimes for noise reduction.  This creates a situation where the fan must work harder to draw cool air across the heat exchanger, which will limit efficiency and cause the unit to wear out much quicker.
 
12. Hose it Down

Your condenser unit can last longer and operate more efficiently if you periodically rinse it off with a garden hose. Spraying water through the coils will clean away dust and dirt that prevent optimum heat transfer.  You should give it a good spraying at least twice a year.  If you live near the beach, saltwater is particularly corrosive to the copper coils so spraying the unit monthly will prolong the life of the unit sand save you big bucks on replacement cost.  (Please be sure to shut off the power supply before using water around electrical equipment.)
 
13. Size Matters

Ok, you've played it safe and received three estimates for replacement of your old system, good for you!  But be sure to ask for a detailed list of the materials and equipment they are providing. Often the lowest estimate can end up costing the most in the long run if the contractor sizes the unit to just barely meet your cooling requirements.  He can usually bet on getting the job because he has the most reasonable price.  However, an undersized system will have to operate for longer cooling cycles in order to maintain the temperature you desire which means more wear and tear on the equipment.  This could cause you to need a new replacement system sooner than if you had installed a unit with ample tonnage in the first place. The energy savings you will realize by installing a properly sized system should offset the increased cost and you'll still be further ahead because the system has a longer life span.
 
14. What's My Line Set?

One way a contractor can "cut corners" is by using undersized line sets. These are the copper tubes that carry the refrigerant from the air handler, which is usually located inside the home or attic, to the condenser, which is the exterior unit.  If the contractor opts for the smaller diameter lines to save a few bucks in material cost, the cost to you can be great in the long run.  You'll burn more electricity and your unit is going to wear out a little sooner than it should.
 
15. Don't Self Diagnose Out Loud

This tactic can save you money in many repair situations.  Sometimes we get a little carried away and try to impress the repairman with our knowledge of the trade, we just want him to know that he not dealing with some know nothing, wet behind the ears greenhorn who doesn't know his A/C from a hole in the ground.  So, we causally tell the guy "it's probably the compressor."  Do we know this from our years of study in the field?  No!  We're probably basing it upon the fact that Bob down the street just has his compressor replaced and our brother-in-law, Jack, needed a compressor just last Spring and in some sort of weird Pavlovian moment, the word 'compressor' just flashed before our eyes like the subliminal messages on the dancing hot dog during the drive-in movie intermission.  Before we defer to expertise of Bob, Jack and the dancing hot dog, why not play it cool and wait for the nice man with his name on his shirt to give us his interpretation of the problem.  The fact that you've kept your poker face up might just make him cautious enough to fix the real problem and save the new compressor for Bob or Jack's next maintenance check.
PS. Why not try this the next time you're at the auto mechanic's, appliance repair shop or even the doctor's office. You'll be surprised how many extra tune-ups components or tests you won't have to pay for.
 
16. It's Electric Boogie Oogie Woogie

The fact is that almost 90% of all air-conditioning problems are electrical.  That can include a litany of condenser capacitors and switches (all relatively inexpensive), which is why some repairman will try to steer the repair toward the more profitable components.  Sometimes they'll even throw the new switch in for free after repairing the more expensive part that was fine to begin with.
 
17.  What Have You Fixed For Me Lately?

You've called the service man to look at your system. When he gets to your place he looks it over and tells you that the problem was just a switch.  For a couple of bucks plus the service call he'll have you up and running in no time.  How cool is that?  Well, pretty darn nifty as long as something doesn't happen to break in the next few weeks or months. Why?  Because the next time something breaks you tend not to remember how happy you were with the guy who fixed what was wrong and no more or no less.  Now you're thinking about the fact that you just had it fixed and that guy probably didn't fix it right. Of course you knew all along it was something more in depth than a twelve-dollar switch!  He better stand behind his work and fix it right this time!  Well, this is precisely the reason why the perfectly honest repairman is likely to replace several electrical components on any given service call.   It's their insurance policy against an irate customer demanding a free repair.
 
18. Place Your Bets

Keeping in mind the scenario in the previous paragraph, realize that the older your unit is the more likely the tech will be to sell you as many replacement parts as he can. He wants to ensure he doesn't find himself in a situation where he has to come back and fix something a week later or deal with the bad press he'll receive from you telling your friends how he didn't fix it properly.
 
19. There's a New Kid in Town

It's not a bad idea to casually ask how long your contractor has been in the air-conditioning business.  Especially when watching the fresh faced young man with the pristine work shirt, shoes and jeans prepare to dig in to your system.  Now remember, some of these fresh faced kids are second and third generation mechanics in family owned firms and probably know more about the trade than the saltiest of service men.  If the answer to you get is, "just a few months but I'm learning a lot," you may want to get another opinion before signing on the dotted line for whatever repair is proposed. Remember, 'see one, do one, teach one' doesn't always work as flawlessly in real life as it does for George Clooney and the gang.
 
20. Salesman or Serviceman?

The closers are out there and they're after your wallet!  They are the guys who pull up in the brand new shiny trucks, smooth talking their way into a sales contract.  If you detect a callused handshake it's probably due to the quest for the perfect golf swing rather than from turning an actual wrench. Make no mistake; it's big business for these guys!  They travel in groups from company to company teaching the tactics we outline in this report.  They'll guarantee a company a certain amount of sales per month in return for a nice check and a percentage.  Ask just about any hard working honest contractor and he'll tell you he's been approached by a closer with promises of sales galore and fleets of trucks with their name on the side.  What do they need with some small time contractor?  Well, it's simple… a clean license and a new name. Their last protégé has either progressed to the level where their services were no longer required or has been buried in a stack of court case liens from suppliers and license suspensions.  These guys know the value of a nice, reputable small business.  Perhaps we should recognize that same value when dealing with the small company, which has served us well in the past.
 
21. Boiler Rooms

Out of the clear blue sky you get a call telling you about a special they're running on clean and maintenance checks blah, blah, blah.  Welcome to the boiler room!  Telemarketers try to sell us everything from magazine subscriptions to vacation packages and also air conditioning repairs.  Whether it is an in-house phone bank or a subcontracted telemarketing firm you can be sure that there is considerable overhead involved in running an operation of this scope and you can't even begin to pay for the manpower, trucks and equipment necessary by performing clean and checks at $19.95.  Our suggestion is to steer clear of the gimmicks and take note of the name of the companies offering them.
22. They Don't Make 'Em Like They Used To

This is actually true, in the "good old days" a system could last 20 years or so yet today's systems are pressing the envelope after 5 years.  It has nothing to do with the quality of American workmanship, imported parts or any of the usual scapegoats.  This happens at the upper-most levels of the corporate hierarchy; it involves pie charts, demographics and so called 'brilliant' proposals with fancy titles and spreadsheets. In the past, the average family would purchase a starter home then increase square footage to raise a family and then move again to a smaller home for retirement.  Today, we tend to move more often which is why the systems are designed to last only as long as we are expected to live in that particular dwelling.
23. Pay For the Call Separately

Most companies will tell you what the fee is for a service call.  Some companies even give free estimates.  One way to let them know that you are on your toes is to resist the temptation to sign on the first date.  Just pay the service fee for the visit and wait until you get the other estimates before making your decision.  A few companies will even apply your service fee toward the final price of the repairs or replacement.
24. How Cool Can You Be

Some people are casual coolers; using the system occasionally to fend off extreme temperatures.  Then there are the hard-core coolers who aren't happy unless the windows are frosty enough for a good game of tic tac toe.  If you fall into the second category then be sure to let the contractor know your preferences!  It will help them size your system correctly and keep you from having to shell out more cash on future repairs and replacements.
25. What About the Ozone

I still have it on a shelf in the garage.  It's an old betamax videocassette recorder.  I paid close to three thousand dollars for it because I had to have it as soon as it was available.  This, in my opinion, is equivalent to the buzz about the new breed of systems with environmentally friendly coolant. While there will be newer and better technologies developed in the future I think it's too soon to jump on the beta bandwagon when VHS may be just around the corner. The cost of the new systems will only get more reasonable as they begin to replace the existing technology.
 

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