Are You Looking for an HVAC Contractor in Olive Branch, MS? WE OFFER RELIABLE HEATING AND AIR CONDITIONING REPAIR SERVICES When your HVAC unit breaks, it's safe to say you're not having a good day. If you need an HVAC contractor in Olive Branch, MS, you should make JMC Heating and Air Conditioning your first call. Whether you need air conditioning or heating repair work, we can handle it all. Our residential HVAC services include: Routine maintenance Gas and electric furnace repair work Upgrades, replacements and installations Central and window AC work Indoor air quality work