At JKJ Heating & Air Conditioning we serve clients in Niagara Falls, St. Catharines, Thorold, Welland, Port Colbourne, Fort Erie and beyond. We've been making our client's homes and businesses more comfortable since 1994, offering complete sales, installation and repairs of heating and cooling systems. What's more, we're available 24-hours a day to get your appliances back up and running again in a hurry. Call us for more information! more... See more text