The answer to 'should I get AC or' is that it depends on your specific needs and climate. Air conditioning (AC) units provide cooling and dehumidification, while heating systems like furnaces provide warmth. Both have their own benefits and considerations.
AC units can help keep your home comfortable during hot summer months, improve indoor air quality, and reduce humidity levels. However, they require regular maintenance, use more energy, and have a higher upfront cost compared to heating-only systems. Heating systems like furnaces are generally less expensive to install and operate, but they don't provide cooling in the summer.