HVAC Promotions Sure to Save You Money You could say you just found the cherry to top your sundae. Or you could just be happy that you’re getting a little savings you may not have expected. Either way, you’re in luck, because we have a few special HVAC promotions that will most likely interest you. From routine maintenance savings to new or replacement system savings, make sure you get the most out of all the promotions in Dresden. For even greater savings, be sure to inquire about potential federal tax credits and other rebates that may be given out by your utility company.