$200 OFF Special price for Installation of a replacement Humidifier read more

HVAC Preventative Maintenance Plans in Chicago

The Gold Star Program

Regular HVAC maintenance is the best way to ensure a long life for your heating and cooling systems. But with the breakneck pace of modern life, the importance of HVAC maintenance can be easy to overlook. Our HVAC maintenance plan, The Gold Star Program, solves that problem. Signing up makes it easy to keep your HVAC systems in pristine condition while saving money!

The ignore-it-till-it-breaks mindset often leads to expensive repairs at the least convenient times. And while we do provide emergency HVAC service, our Gold Star maintenance program members rarely need them. That’s because we can monitor the wear and tear of your residential or commercial HVAC units over time. This allows us to service moving parts rather than simply replacing them when the system fails.

The Gold Star HVAC preventative maintenance plan offers whole home protection. We inspect your entire HVAC system, optimizing air conditioners, heaters, and even humidifiers. As a result, you’ll enjoy improved efficiency and indoor air quality and need fewer repairs. Plus, you’ll receive priority bookings and discounted service calls should an issue arise.

Our Gold Star Maintenance Agreement includes:

  • Priority Service over non-agreement customers.
  • Reduced-fee service calls during normal business hours Monday through Saturday.
  • Special Saturday appointments at no extra charge
  • System maintenance as low as $24 per month

Heating Equipment

  • Analyze heat exchangers for cracks or deterioration
  • Test safety controls for proper operation
  • Confirm exhaust vent provides necessary air flow
  • Test carbon monoxide emissions and levels
  • Clean burners and pilots
  • Inspect blower motor and wheel
  • Cycle and inspect operating controls
  • Check natural gas lines for leaks and wear
  • Inspect line voltage switch and wiring
  • Check furnace for mold and mildew
  • Measure indoor humidity levels
  • Replace air filters upon request
  • Provide written report of findings and recommendations

Air Conditioning Equipment

  • Clean condenser coils and inspect them for faults
  • Inspect blower motor and wheel
  • Test indoor humidity levels
  • Measure refrigerant level
  • Inspect refrigerant lines for leaks and insulation level
  • Inspect and cycle operating controls
  • Check line voltage and wiring
  • Inspect condensate line for drainage
  • Inspect all electrical connections
  • Replace air filters upon request
  • Provide written report of findings and recommendations


  • Check for mildew and mineral deposits
  • Inspect condensate systems
  • Confirm water feed line provides adequate flow
  • Test humidifier as a whole for proper operation
  • Measure indoor humidity levels
  • Provide written report of findings and recommendations

From furnaces and heat pumps to humidifiers and ACs, an HVAC preventative maintenance plan can save you money. And the Gold Star program is the most generous HVAC maintenance plan in Chicago, IL.

Heating and air conditioning aren’t just luxuries in Chicago, they’re necessities. Don’t wait until you need emergency services to think about your HVAC system. Give us a call today at 773-829-4295 for more information or to sign up for the Gold Star Program. Your HVAC system and your wallet will thank you.

Client Testimonials

Read the opinions of our satisfied customers.

I always use Deljo. The entire staff is amazing from intake calls to install. They were fast, professional and gave us a fair price.

Monica OConnor Chicago IL.

Joe was great. We came home to a cold house on a Sunday night and he came out to diagnose the issue right away. Very knowledgeable, very friendly.

Kyle Sant Chicago IL.

We’ve been using Deljo for several years and have had a great experience with them. They’re prompt, reliable, and trustworthy. The technicians (David was the most recent) have been great.

Ari Telisman Chicago IL.

My hot water heater had some leaky pipes due to corroded unions. The repair took longer than I thought due to some unforeseen circumstances. Unfortunately after the repairs the water heater stopped working...

Maria Pradd Chicago IL.

Questions? We Can Help! Contact Us Today!

Our Service Areas

Contact Deljo Heating & Cooling today. We look forward to hearing from you and helping out with all your indoor comfort needs.

Chicago Suburbs

Chicago Neighborhoods