Buildings are getting older, labor is becoming tighter, and energy efficiency standards are turning more stringent. The confluence of those factors has left an opening for contractors who keep communication with customers a two-way street. Contracting pros who expand their preventative maintenance offerings can insulate their operations from the retrofit market’s drastic swings by offering a consistent revenue stream and the opportunity for pull-through projects, according to Contracting Business content director Terry McIver. Commercial HVAC systems can benefit from check-ins and regular upkeep just as home furnaces and air conditioners can. Check out our list of seven steps for routine maintenance on propane-based heating systems

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