The answer to 'drain cleaning frozen' is that a frozen drain is typically caused by a blockage that prevents water from flowing freely, which then freezes in the cold temperatures. Common symptoms include slow or completely stopped drainage, gurgling noises, and water backing up in sinks or tubs.
Some DIY solutions for a frozen drain include using a plunger to try to dislodge the blockage, pouring boiling water down the drain to melt the ice, or using a drain snake or auger to break up the blockage. However, if the drain is severely frozen or the blockage is difficult to remove, it's best to call a professional plumber who can use specialized equipment and techniques to safely and effectively clear the drain.