HVAC Companies Bannockburn – Ajax Air Conditioning and Heating Terrific Five Star Reviewbr br Ajax Air Conditioning and Heating Bannockburn, ILbr (847) 232-6820br br Excellent 5 Star Review:br br 'I wanted to thank this great company for the amazing job they did in repairing my furnace. Now I know the company I will always be contacting for my HVAC needs. Ajax was very helpful and reliable. I recommend this company.'br by T.