O'Neill Heating & Air Conditioning Services

O'Neill Heating & Air Conditioning Services operates from Columbia, South Carolina, with a current rating of 3.7 stars across nine posted customer reviews. The company maintains round the clock availability for emergency calls, a practical feature for residents of the capital city where summer temperatures routinely push past ninety degrees. Owner Denis O'Neill appears personally in customer feedback, describing hands on involvement in repairs and warranty claims. The business serves Columbia proper alongside neighboring communities in Richland County and the Lexington County border areas.

What distinguishes this contractor is the straightforward approach reported in reviews: straight talk about repair costs, a willingness to explain what went wrong, and occasional no charge fixes when the problem proves simpler than initially diagnosed. One reviewer documented an instance where the technician addressed a drainage issue without dismantling equipment, resolving the concern for free. The company handles both routine maintenance and larger projects such as complete duct replacement in older homes.