Heating and Cooling Solutions

Crystal Lake, IL

24/7 Emergency Service Available

Coupons Available

Financing Options

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Reliable Heating and Cooling Solutions

H.R. Stewart has been keeping homes and businesses comfortable since 1930. As a third-generation family-owned plumbing company, we've expanded our expertise to provide comprehensive heating and cooling services to the Northwest Suburbs of Chicago. Our team of NATE-certified technicians is dedicated to ensuring your indoor environment remains perfect year-round, whether you're battling the summer heat or winter chill.
We understand that HVAC issues don't always happen during business hours. That's why we offer 24/7 emergency service, with same-day assistance available when you need it most. As a factory-authorized dealer for Carrier and a qualified Bradford White water heater installer, we bring you the best in heating and cooling technology. Our commitment to excellence hasn't gone unnoticed – we're proud recipients of the Best of the Fox Readers' Choice Award for 2024-2025. Ready to experience the H.R. Stewart difference? Contact us today and let's keep your home or business comfortable all year long.

Why Choose Us

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24/7 Emergency Service Available

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Coupons Available

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Financing Options

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NATE-Certified

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Maintenance Agreements Available

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Third-Generation Family-Owned Business Since 1930

H.R. Stewart, Inc.
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AC Services

Beat the Chicago heat with our comprehensive AC services. From installation to maintenance and repairs, we'll keep your air conditioning running smoothly and efficiently. We offer $300 off on high-efficiency AC installations to help you stay cool while saving on energy costs.
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Air Quality Services

Breathe easier with our air quality services. We provide solutions to improve indoor air quality, reducing allergens, pollutants, and ensuring a healthier living environment for you and your family.
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Commercial AC Services

Keep your business cool and productive with our commercial AC services. We understand the unique needs of commercial spaces and offer tailored solutions to maintain optimal working conditions.
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Commercial Heating Services

Ensure your business stays warm during those harsh Chicago winters. Our commercial heating services cover installation, maintenance, and repairs for all types of commercial heating systems.
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Emergency Heating and Air Repair

When HVAC emergencies strike, we're here 24/7. Our quick response team provides same-day emergency service to get your system back up and running promptly. Plus, enjoy $25 off on any billable service call.
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Heating Services

Stay cozy with our comprehensive heating services. We're offering $300 off a high-efficiency furnace installation to help you upgrade your heating system while saving money.
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High-Efficiency HVAC

Upgrade to a high-efficiency HVAC system and save on energy bills. We're offering $400 off high-efficiency furnace and AC combo installations. Our experts will help you choose the right system for your needs.
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HVAC Testing

Ensure your HVAC system is performing at its best with our comprehensive testing services. We use advanced diagnostic tools to identify and address potential issues before they become major problems.
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Specialty HVAC Services

From unique installations to custom HVAC solutions, our specialty services cater to all your specific heating and cooling needs. We'll work with you to design and implement the perfect system for your space.
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Ventilation Services

Proper ventilation is key to a healthy indoor environment. Our ventilation services ensure your space has optimal air circulation, reducing humidity, preventing mold growth, and improving overall air quality.
H.R. Stewart, Inc.

Save $25 On Any Billable Service Call

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$25 OFF

Get a $25 discount off your billable service call. 1 coupon per customer, per service. Valid only with coupon. Not valid with any other offer. Coupon code is Web 2021-25.

H.R. Stewart, Inc.

Save $300 On A High Efficiency Furnace Installed

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$300 OFF

Get a $300 discount on a high efficiency furnace installed. 1 coupon per customer, per service. Valid only with coupon. Not valid with any other offer. Coupon code is Web 2021-300.

Recent Projects

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Here's what our satisfied customers are saying...

At H.R. Stewart Inc, we take pride in providing exceptional plumbing and HVAC services to our customers. We would be grateful if you could share your thoughts about our business with others. Your feedback helps us improve and helps others make informed decisions. Please take a moment to leave a review of H.R. Stewart Inc and let others know what you think.

Frequently Asked Questions About Our HVAC Services


  • What types of heating and cooling systems do you work on?

    Our team works with a wide range of residential and light commercial heating and cooling systems, focusing on dependable comfort and long-term reliability. Homeowners often reach out to an HVAC Contractor in Crystal Lake, IL when they notice uneven temperatures, rising energy bills, or systems that struggle during seasonal changes. We help with furnaces, boilers, radiators, and air conditioning systems, along with ductwork and sheet metal components that support efficient airflow. Our approach is practical and informative, helping you understand what your system needs without pushing unnecessary upgrades.


    We also take time to explain how everyday habits, regular maintenance, and system age can affect comfort and efficiency throughout the year.

  • Do you handle plumbing issues beyond basic repairs?

    Yes, our plumbing services extend well beyond fixing leaks or replacing fixtures. Many customers choose an HVAC Contractor in Crystal Lake, IL because they want one reliable company that understands how plumbing systems connect throughout the home. We assist with sewer services, gas line work, drains and pipes, and specialty plumbing projects that require extra attention. These services often include:


    • Diagnosing recurring drain or pipe problems
    • Supporting appliance installation with proper plumbing connections
    • Addressing outdoor plumbing concerns before they worsen

    Looking at the full plumbing system helps uncover causes, not just symptoms, which can reduce repeat issues and unexpected disruptions.

  • Can you help with appliance and water heater installations?

    Appliance and water heater installations are an important part of keeping daily routines running smoothly. Homeowners often look for an HVAC Contractor in Crystal Lake, IL who understands both plumbing and mechanical connections involved in these projects. We help install water heaters, dishwashers, washing machines, and other appliances that rely on safe water and gas lines. Our goal is to ensure everything is connected correctly from the start, reducing the risk of future issues and helping appliances operate as intended.


    Proper installation can also support better efficiency, quieter operation, and fewer service calls over the life of the appliance.

  • What should homeowners know about gas line and sewer services?

    Gas lines and sewer systems are often out of sight, which makes early warning signs easy to miss. Working with an HVAC Contractor in Crystal Lake, IL can be helpful when you notice slow drains, unusual odors, or appliances that aren’t functioning properly. Gas line services focus on safety and proper flow, while sewer services help prevent backups and long-term damage. Common reasons people request these services include:


    1. Older systems that need updates or repairs
    2. Persistent clogs that standard cleaning can’t resolve
    3. Preparing a home for remodeling or new appliances

    Paying attention to subtle changes can make it easier to address concerns early, before they turn into larger, more disruptive problems.

  • Do you offer solutions for outdoor plumbing problems?

    Outdoor plumbing issues can be easy to overlook until they cause noticeable damage. Many property owners contact an HVAC Contractor in Crystal Lake, IL when outdoor faucets, underground lines, or seasonal plumbing components stop working as expected. We assist with outdoor plumbing repair that supports proper drainage and water flow around your home. Addressing these issues early can help prevent foundation concerns, water waste, and inconvenient disruptions during warmer months.


    Seasonal inspections are especially helpful, as changing temperatures can place added stress on exterior plumbing components.

  • How do your specialty plumbing and sheet metal services fit together?

    Specialty plumbing and sheet metal services often go hand in hand, especially when systems need custom solutions. Choosing an HVAC Contractor in Crystal Lake, IL can make these projects more straightforward because plumbing, heating, and airflow considerations are handled together. Sheet metal work supports proper ventilation and system performance, while specialty plumbing services address unique layouts or older homes. This combined approach helps ensure systems work efficiently without relying on one-size-fits-all fixes.


    This coordination is especially valuable in older properties, where customized adjustments help systems operate more smoothly and reliably, reduce strain on connected components, improve long-term durability, and support safer, more consistent comfort throughout the entire home.