2. These springs do wear out over time – in fact, they are commonly rated with what is called a cycle life. The average standard cycle life is ten thousand cycles with each cycle being one opening and closing of the door. This means for a door that sees four cycles per day you might expect to replace your springs after somewhere close to seven years of use.
An extension spring counterbalance system consists of a pair of stretched springs running parallel to the horizontal tracks. The springs lift the door through a system of pulleys and counterbalance cables running from the bottom corner brackets through the pulleys. When the door is raised, the springs contract, thus lifting the door as the tension is released. Typically these springs are made of 11 gauge galvanized steel, and the lengths of these springs are based on the height of the garage door in question. Their lifting weight capacity can best be identified by the color that is painted on the ends of the springs. https://m.youtube.com/e/Z_eZc-kh40c

I have 2 full house humidifiers that have stopped functioning right. There are new filters, fan runs, tanks are full of water but they are not empting into the base. They have worked for part of the winter and now nothing seems to help...I loosened the caps thinking I had them too tight..... nothing seems to work .I have had humidifiers for 20 years and this is the first time this has happened to me. The humidifiers are only 2 years old. Any suggestions??
Before we help you diagnose your stuck garage door, safety concerns can't be over stated. When trying to figure out how to fix a stuck garage door, it is important to take every safety precaution. Garage doors weigh hundreds of pounds and torsion springs hold a tremendous amount of energy waiting to be released, so without proper precaution it is possible to hurt yourself attempting to perform unauthorized repairs.
4. It is also important to note that extension springs sometimes do not break but rather ‘stretch out’. This is easy to spot as the space between coils when the door is closed is normally consistent. When the spring fails without breaking the space between the coils will become very inconsistent. This condition is quite visible and if it exists the springs should be replaced (Know when to call quits with your garage door). 

Action Garage Door Repair Centennial Colorado 80016

The spring is the most common part to break. It is responsible for supporting and lifting the heavy weight of the door, making it easier to be opened manually. A broken spring is the most unwanted thing a homeowner would ever want to happen especially during weekdays when everybody is busy and needs to rush to school and work. It is not advisable to open the garage until the broken parts of the door has been replaced.

One thing to consider - assuming you have 2 springs and an opener, unless the other spring is quite new, you should replace it at the same time, first because it will probably break fairly soon anyway and changing two is only about $50 more than changing one, and because the springs on both sides should be of equal stiffness - if not, then the door will be unevenly weight compensated and try to open cockeyed, increasing wear and risk of damaging the motor.

If you have decided to replace your springs, if you are sure your door had the correct springs, and if you are ready to buy new ones, we recommend that you measure your spring or springs following the instructions in Step 4 below. Measuring springs can be difficult; most individuals, even garage door technicians, sometimes have difficulty measuring torsion springs. Ordering incorrect springs wastes time and money. http://youtube.com/v/Z_eZc-kh40c