Homeowners who have waited for this heat wave before thinking it might be time for an HVAC tuneup could find themselves sweating before their technician can arrive. Warren Lupson, an adjunct professor ...

“People often focus on kitchens or finishes, but HVAC systems are one of the most expensive things to replace,” explains Kathy Hannun, CTO and founder of Dandelion Energy. “If it breaks soon after ...