In one sentence, describe what the following article is about: If you're planning a domestic flight, it's a good idea to start searching for tickets about a month and a half in advance. Continue checking weekly to find out if tickets get any cheaper up until the point that you make your purchase. If you're flying internationally, start your ticket search about 20–24 weeks in advance.  It won't do you much good to look for tickets more than 6 weeks (for domestic) or 24 weeks (for international) in advance since ticket prices could fluctuate widely before you actually make your purchase. Looking for international flights 24 weeks in advance may seem like a long time, but airlines raise their international flight prices many weeks before they raise the costs of domestic flights. The ideal window of time to get your tickets is 2-4 weeks before you're planning to fly. Most airlines will raise their ticket prices once fewer than 14 days remain prior to the flight. This is especially important if you're flying during busy travel times—e.g., over spring break or before Thanksgiving—since flight prices can sometimes double or triple as the flight date approaches.  If you're flying internationally, plan to start looking much farther in advance, since international flights cost more. Plan to buy tickets at least 3 months before you fly. If you wait until, say, 1 week before flying, you'll be stuck purchasing very expensive tickets, even if you're flying on a budget airline. If you forgot to purchase your tickets 2-3 weeks before the day of your flight, the next-best option is to wait to purchase tickets until less than 24 hours before your flight. Airlines will often dramatically lower ticket prices in order to fill up all of the seats on the plane. However, if you wait until the last minute, you could find out that the flight has sold out, or that the only remaining tickets are very expensive. If your travel schedule is relatively flexible and you can shift the days that your flights depart and arrive, you may be able to find cheaper flights. Compare ticket prices across a 3-4 day window using an aggregator site or airline site. If you can manage to rearrange your travel plans, select the days that offer the most discounted flights! For example, say you were planning to fly out on May 1 and return on May 20 for $400 USD. If you investigate alternate dates, you may find that it costs only $325 USD to depart on May 3 and return on May 21. Most travelers prefer to fly at convenient times that don't require them to stay up late or get up early. Because of the increased demand for flights at popular times, airlines will charge more for flight tickets at, for example, 10:00 a.m. On the other hand, red-eye flights that take off between 9:00 pm and 9:00 am will be steeply marked down in order to offset the inconvenience of traveling at these times. Most aggregator and airline websites let you choose the specific times that you'd like your flight to depart. Airlines generally release sales for specific routes on Monday night because they want travel agencies to catch wind of sales early in the week. Competitors match the deals on Tuesday morning, which causes airlines to lower the flight costs. So, your best shot at obtaining cheap deals is to search for flights that depart on Tuesdays, Wednesdays, or Saturdays. Friday and Sunday tend to be the most expensive domestic travel days, so avoid purchasing tickets for these days.  If you're flying internationally, flying on a weekday is almost always cheaper than flying on the weekend. Of course, this strategy isn't 100% effective. It's a good idea to do a cursory search for specific routes of interest on several days of the week (including weekends). That way you have an idea of how much the tickets cost and you can identify a sale when it appears.
Summary: Start looking for domestic tickets at least 6 weeks in advance. Purchase your tickets at least 2 weeks before flying. Check out alternate dates to find more affordable tickets. Save money by taking your flight early in the morning or late at night. Schedule your departure for the middle of the week or a Saturday.

In one sentence, describe what the following article is about: There should be an outdoor shutoff near the condenser unit. This will resemble a square box on the wall of the apartment or house. Inside, look for a switch that you can slide to the “OFF” position. If there is no switch, you’ll need to manually pull the plug which feeds power to the condenser.  Before you begin disassembling any portion of the condenser, it’s crucial that you disable the power supply. If you cannot find the power outlet where the compressor unit is plugged in, or if you’re inclined to be extra cautious, you can simply flip the switch to “OFF” in the circuit breaker box which controls power to the AC condenser. The fine, narrow slats of metal which line the sides of the compressor unit are called “fins.” You can clean the fins by running the nozzle of a vacuum cleaner over them; this will remove the debris and allow the condenser to pull in air without obstruction. A wet/dry vacuum is the tool best suited for this job.  The condenser unit sucks in air through these fins. Over the course of time, these will become dirty with bits of leaves, grass, and dust. If you don’t have a wet/dry vacuum, see if any of your friends or neighbors have one. You may also be able to rent a wet/dry vacuum from your local hardware store. Often with normal wear, some fins on the condenser can become bent. If you notice that any of the fins are crooked or have been twisted, you can use a knife or kitchen utensil to gently straighten the fins. Apply gentle, steady pressure to bend the fins back into position. If you use excessive force, you risk snapping off the fins or damaging them further. The fan unit sits on top of the compressor, and is typically covered by metal wiring or a grate. Using a screwdriver, remove the wiring on top of the fan, and then unscrew and remove the fan itself. Due to the wires connecting the fan motor to the compressor unit, you may not be able to fully lift off the fan. You’ll simply have to lift the fan as far out of its housing as possible. Using your garden hose, rinse any debris (bits of leaves, grass, dust, or pollen) from the blades of the fan. To make sure that the fan blades are clean, you can also wipe them off with a clean cloth or rag. Then, use the hose again to spray water through the compressor’s fins from the inside of the unit. Rinsing the fins from the inside will make sure that any obstructions are cleared, and the unit can effectively draw in air. Once you’ve finished cleaning the fan blades and the interior of the compressor, you’re ready to put everything back together. Set the fan back in place, and re-insert the screws holding it to the metal frame. Do the same thing with the metal wiring over the top of the fan. At this point, you can also turn the power supply back on.
Summary:
Shut off power to the unit. Vacuum the condenser fins. Straighten the condenser fins. Unscrew and remove the fan. Wash the fan blades and the interior fins. Reassemble the compressor unit.