Water damage restoration is more than extracting water from the carpet.
Many different scenarios can play out when it comes to water damage. Toilet overflows, busted or burst water pipes, wash machine overflows, flooding from swollen rivers, wind driven rain, sump pump backups, frozen water spigots, and leaky roofs.
When water damage does occur, the water will take the least path of resistance. High tech moisture meters are required in order for us to find the damage. Mold damage can and will occur if the materials are not dried within a certain time frame.
If your carpet and pad have experienced damage from water, then those will need to be extracted and the padding removed.