Gil Wagner, Operations Manager at Doornbos Heating and Air Conditioning, talks about getting homes ready for the summer heat. Gil answers questions about putting filters in vents, having upper-level exhaust fans, and more! Listeners call in to ‘Ask the HVAC expert.’ For more information on Doornbos, visit doornbos.com. Mention WGN Radio, and you’ll get $50 off your Spring A/C tune-up and cleaning!