Is my air conditioner broken?

Last winter, I observed the gas furnace running for much longer cycles.  The increase in energy usage showed up on our weekly utility bill. I tried lowering the thermostat by a couple of degrees, but the condo already felt a bit chilly.  The gas furnace was easily putting out less air & absolutely struggling to keep up with demand. Plus, the heated air had an unpleasant smell & was bringing dust into the home.  When our spouse started coughing & complaining of a headache nearly every night, I hired a local Heating as well as A/C company for help. The Heating as well as A/C company evaluated out the gas furnace & found nothing beyond a minor build up of dust.  When he evaluated the duct system, however, he discovered a significant accumulation of contaminants. Although I’ve been conscientious about professional upkeep for the gas furnace, I’d never given the HVAC duct a thought. Over the years, dust, construction debris, bugs, webs, & all sorts of disgusting things had settled into those pipes.  The buildup restricted the flow of air, making the gas furnace task much harder to achieve thermostat settings. I expected the duct cleaning process to be pricey, labor intensive & messy, Instead, the Heating as well as A/C company brought in a piece of component that looked a lot prefer an oversized vacuum cleaner. A hose with a brush attachment fitted into the ducts to wash & suck up the contaminants.  The process was completed in a couple of minutes, with no disruption to our lake condo & no destruction to the ducts. The improvement in the operation of the gas furnace, comfort of the lake condo & air quality was immediate.

HVAC maintenance plan