 Better check before you melt. Comfort Source is an independent Mitsubishi electric heating and air conditioning dealer and ready to help you find the best heating and air conditioning solutions. Their maintenance plan will always put you at the top of the call list with a 24-hour response time. So if you're looking for maintenance on a current system or looking to purchase a new one, contact Comfort Source, your independent Mitsubishi electric heating and air conditioning dealer. Right now, they're offering up to $1,200 off a new Mitsubishi electric heating and air conditioning system.