Why your air conditioner struggles during heat waves and what homeowners can do about it

During heat waves, air conditioners often appear to struggle, and the article explains that extreme outdoor temperatures increase the cooling load and can extend run times. By removing heat from indoor air and transferring it outside, an AC has to work harder when the indoor-to-outdoor temperature difference grows, which can lead to higher energy consumption and smaller temperature drops during the hottest hours. It notes that longer continuous operation can be normal, especially in properly functioning systems that run through peak afternoon periods to manage temperature and humidity. However, if performance consistently falls short in prolonged heat, the piece points to equipment upgrades. As an example, it highlights the Ruud RP17AY Endeavor Universal Heat Pump, citing an inverter-driven variable-speed compressor designed to match cooling demand more precisely, reducing frequent cycling and power spikes. The article also links poor cooling to restricted airflow from dirty filters, blocked vents, or clogged ductwork, recommending regular filter inspection and replacement using the correct MERV rating. It further emphasizes that maintenance and equipment age affect results.