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Garage Door Spring Replacement: What You Need to Know Before Purchasing

Garage door spring replacement involves providing some correct basic information to the garage door spring supplier while ordering the springs. They are important parts of the garage door opening systems and help in lifting and opening the doors. The correct size of a spring is vital for the proper functioning of the door.

There are two types of garage door springs that include extension and torsion springs.

Extension Springs:

An overhead garage door or a single-car garage door is fitted with extension springs as a standard hardware. These springs are attached on the side of the door and extend horizontally when the garage door is closed. Extension springs can be installed easily.

garagedoorextensionspringTorsion Springs:

All double-car garage doors have torsion springs. These springs are located above the top part of the door. These are wound springs. They do not contract or expand when the door moves. A torsion or tension spring gives a better performance as it provides more safety, better balance and a smoother operation.

The torsion springs are fully loaded and more complex. These springs are able to lift up to 500 lbs. Installing the torsion springs is potentially difficult and can end up a serious accident. It is better to leave it to the professionals.

Ordering Garage Door Spring Replacements:

When you order the spring, you have to furnish the following information to the supplier about each spring:

  • Type of spring: Torsion or Extension type
  • Size:
    1. Overall length
    2. Wire Size
    3. Inside Diameter of Torsion Spring
    4. Outside Diameter of Extension Spring
    5. Spring Wind Type Right Hand or Left Hand, and
    6. Type of ends
    7. Number of Coils
  • Other information that will be helpful:
    1. Size and Type of the Door, Door Weight
    2. Door Manufacturer

Determining the Type of the Garage Door Spring:

It is easier to find out the type of spring on your garage door by taking a look. The extension type springs run along the door tracks and they are aligned vertically. The torsion springs are located directly above the garage door and have a coil-type mechanism.

Finding the Correct Size of Spring:

The garage door spring provides a powerful tensile force for smooth operation of the door smoothly. You should get or measure the correct size to fit properly and match the door weight. It should be replaced with exactly the same size of a spring that was properly working earlier.

You may like to buy the spring yourself and get it installed by a service provider or yourself. Check the manual supplied with the door by the door manufacturer. It will contain the complete information about the springs and other replacement parts.

If you do not have a manual, you need to use other methods to get the correct sizes. It will require checking the springs as well as other garage door components physically.

Some springs have sizing information marked on them. For instance, if a spring is marked 225B26, it has a spring wire size 0.225 and 24 inches length. You may also take the help of a dealer. Some dealers can also help you identify the size with the manufacturer and for ordering the correct replacement springs.

It is also possible to contact a garage door company to supply and install the spring. They will do everything. However, it may prove to be quite expensive.

Measuring the Spring Size:

You can measure the spring to determine its correct size.

Weight Estimation: Measure the width of your garage door excluding its roller mechanisms or tracks. Also measure its height and note down its type of construction. That will help estimation of its approximate weight. The coil wire size is also directly related to the maximum garage door weight it can lift.

Length: Measure the length between end collars or cones. If there is a broken spring, add the measurements of lengths of its pieces.

Outside Diameter (OD): Measure the outer diameter with outside calipers.

Coil Wire Diameter: Measure the dimension across 10 spring coils in the completely compressed condition, then get the wire size by dividing it by 10.

Inside Diameter (ID): You can find the inside diameter from: Inside diameter = OD – 2 x Wire diameter.

Spring Wind Type: Look at the spring. If your spring is vertical and the coils rise towards right, it is a right-hand (RH) spring. If they rise toward the left, it is a left hand (LH) spring.

Number of Coils: Count the number of spring coils.

Buying the Springs

Once you know the correct type and size of the spring, you can search for garage door service providers, garage door parts and spring suppliers, or contact the manufacturer of the garage door directly. You can provide the measurements and required information to get the correct spring for the garage door. Several home improvement stores including Home Depot and Lowe’s keep garage door spring replacements. You can also contact some online retailers.