Washing air-blocking debris off air conditioning fins is as easy as using a garden hose.
It maintains the system's efficiency and reduces energy bills. Here are a few tips for the best results.
1. If the fins are caked with fuzz from dandelions or cottonwood trees, vacuum before you rinse with water.
2. Rinse with moderate pressure. The fins are flimsy metal, which will bend under strong pressure.
3. As you spray, peer down into the unit. You should see water streaming through the fins. If not, the fins are blocked and need more rinsing.
4. Rinse off all the fins, but pay special attention to the fins just under the lid of the unit. Aim the water upward to drive out debris buildup there.