Current HVAC Promotions from Controlled Comfort HVAC Inc You could say you just discovered the cherry to top your sundae. Or you could just appreciate the fact that you’re getting a little savings you may not have predicted. Either way, today’s your lucky day, because we have a couple special HVAC promotions that will most likely interest you. From routine maintenance savings to new or replacement system savings, make sure you utilize all the promotions in Carpentersville. For more savings, be sure to check in to potential federal tax credits and other rebates that may be given out by your utility company. Find information about our Federal HVAC Credit.