Our Resources for Your HVAC Replacement We have all the resources you want to help make your HVAC equipment replacement process simple. Whether you’re in need of answers to routinely asked questions or want to take advantage of a great deal we are offering at D & K Heating Service Experts Heating & Air Conditioning in Belleville, you can find it all here. As your local heating and air conditioning experts, we want to make buying an air conditioner or furnace a stress-free experience. Discover more below. Frequently Asked Questions Find answers to the most frequently asked questions on our FAQ page. We update this page constantly, so all the latest HVAC product and technology questions – and answers – can be found here. If you don’t find an answer to your query, please don’t hesitate to give us a buzz at 613-707-2421. Coupons Who doesn’t love saving a little cash? We share coupons for our products and services here. Click to see our most recent savings offers for heating and cooling repair, maintenance or replacement. As usual, we’re happy to answer your questions by phone or in person. Remember: we offer a free, no pressure in-home consultation, and scheduling your appointment has never been easier. Just use our online scheduler, and get your consultation in the books today.