Current HVAC Promotions from Morgner Incorporated Air Conditioning & Heating You could say you just found the sprinkles to top your sundae. Or you could just be happy that you’re getting a little savings you may not have anticipated. Either way, today’s your lucky day, because we have a couple special HVAC promotions that will probably interest you. From routine maintenance savings to new or replacement system savings, make sure you take advantage of all the promotions in Saint Louis. To get better savings, be sure to check in to potential rebates that may be provided by your utility company.