As an Essential Business, we are providing plumbing and HVAC services with extra safety measures including additional protective gear and technologies to limit – or eliminate – in-person interaction with Live Video Estimates. Learn more in our blog.

Between humid summers and frigid winters, it can sometimes be difficult to expect the inside of your home to have a comfortable interior temperature. However, sometimes the worst happens: Your Evanston HVAC system breaks down. When that happens, do you know what to do? 

Remember this name: Intelligent Service. We’re an Evanston HVAC company that’s been serving your community since 1979. With our BBB accreditation, recognition from the Angie’s List, and other distinctions, you know that we’re a company you can trust! We’re proud to be able to be of service for scheduled maintenance as well as 24/7 emergency repair. 

HVAC Experts for Your Evanston Community

If you live in Evanston, you know that it can seem like the climate changes on a dime. This can be tough on your HVAC system. It’s always best to be proactive with preventative maintenance for your system, because you definitely wouldn’t want it to stop working on the hottest or coldest day of the year! 


At Intelligent Service, that’s our goal for you. That’s why: 

  • We make it a point to service almost every make and every model of heaters, air conditioners, and more. It’s a point of pride for us--and it’s convenient for you. 
  • The HVAC systems we manage are made by top-tier names in the industry, and we provide comprehensive warranties. 
  • Our 24/7 emergency response and repair services are the stuff of legends. We’ll show up and take care of your problem, no matter the time. 
  • Because we believe that a smoothly running HVAC system should be accessible to everyone, we work hard to keep our HVAC repair prices low. 


From initial installation and routine maintenance to emergency response and timely furnace repair, we’re the company of HVAC repair professionals that will be there for you. 


Request a Free Quote for Our Evanston HVAC Services Today

Do you need a break from sweating through the heat of the summer or shivering through cold winter mornings? We get that--and that’s why we do what we do as certified HVAC experts. At Intelligent Service, we’re proud to be a go-to Evanston HVAC company, and we can’t wait to help you add value to your home.


Ready to team up? Call our friendly team today for more information about what we can offer you. Or, alternatively, you can simply fill out our brief online form to request more information and a free quote.

Why Choose Intelligent Service?

Chicago Plumbing Professionals with Integrity

We care about your home just as much as you do, and we approach every HVAC or plumbing project with our five core principles in mind.

Safety First for All

Safety First for All

To maintain a safe environment for our family and yours, our technicians are drug-tested, manufacturer- and OSHA-trained, and EPA-licensed.

Superior Service

Superior Service

Our superior service guarantee drives us to always confirm appointments, arrive on time, keep homes clean, and work efficiently.

Positive Workplace

Positive Workplace

Instead of hiring subcontractors, we invest in creating a collaborative, fulfilling work environment so that we can retain top talent.

Exceptional Integrity

Exceptional Integrity

Our employees are not commission-based; they’re paid a fair wage and full benefits so they can act with integrity instead of high-pressure sales tactics.

Think Twice, Act Once

Think Twice, Act Once

We carefully weigh all Chicago HVAC solutions before choosing the right one. Once installed, we back our work with a forever guarantee.