A-OK Heating, Cooling & Plumbing has been serving Lansing, MI, for 45 years, providing excellent customer service at a fair price. Whether you need a new air conditioner, furnace, repairs, or maintenance, we offer timely service and FREE estimates for new installs. Our team specializes in furnace installation, heating repair, AC installation, and emergency HVAC services to keep your home or business comfortable year-round. From quick AC repairs to full system replacements, we handle residential and commercial projects with care and professionalism. Call us today for fast, expert heating and cooling solutions you can trust!