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L.L.D Heating & Cooling

Heating, Cooling & Commercial Refrigeration in Lake County

Family-operated HVAC/R service for homes and businesses in Waukegan and surrounding communities. Honest recommendations, dependable workmanship, and free estimates.

About Us

Local HVAC/R Service Without the Runaround

L.L.D. Heating & Cooling is a family-operated HVAC/R company serving Waukegan and surrounding communities. Founder Heraclio Galvan built the business around honest recommendations, dependable workmanship, and direct communication.

When you call LLD, you speak directly with the person responsible for the work—not a distant call center. From residential heating and cooling to commercial refrigeration, we provide straightforward service from start to finish.

From Start To Finish

Our company ensures satisfaction to turn your HVAC problems into lasting solutions.

Our Commitment to Quality

We deliver the highest level of HVAC service, quality workmanship, and reliable solutions. We stand behind every installation, repair, and maintenance service with a commitment to your complete satisfaction.

Get in touch with our team today for your free estimate!

OUR HVAC/ R Services

No matter your HVAC/R needs, we're here to help. Our services include:

Cooling

Reliable AC repair, maintenance, and cooling solutions to keep your home comfortable all summer long.

Heating

Dependable furnace and heating services designed to keep your home warm, efficient, and comfortable.

AC Repair & Installation

Professional AC repairs and system installations for dependable comfort and long-term performance.

Indoor Air Quality (Ductwork/Filters

Improve the air inside your home with filtration, ductwork, and indoor air quality solutions.

Commercial Refrigeration

Reliable refrigeration service for commercial systems, including repairs, maintenance, and equipment support.

Gas Line Piping & Repair

Safe, professional gas line installation and repair for furnaces, appliances, and other gas-powered equipment.

Thermostat tune ups

Thermostat installation, replacement, and troubleshooting to help keep your home comfortable and your HVAC system running efficiently

PROFESSIONAL HVAC/R SERVICES FOR HOMES & BUSINESSES

Expert heating, cooling, refrigeration, and indoor air quality solutions you can rely on.

Cooling Services

  • AC Repair

  • AC Installation

  • Heating & Furnace Repair

Indoor Air Quality

  • Air Filter Replacement

  • Thermostat Installation

  • Gas Line Piping & Repair

Commercial Refrigeration

  • Food Service Equipment

  • Preventative Maintenance

  • Refrigeration Equipment Repair

Areas We Serve

Local HVAC/R Service Across Northern Illinois & Southern Wisconsin

Lake County, IL

Waukegan, Gurnee, Zion, Beach Park, North Chicago, Winthrop Harbor, Libertyville, Vernon Hills, Mundelein, Lake Forest, Lake Bluff, Grayslake, Round Lake, Round Lake Beach, Round Lake Park, Round Lake Heights, Hainesville, Lindenhurst, Antioch, Fox Lake, Lake Villa, Wadsworth, Old Mill Creek, Hawthorn Woods,

Kenosha County

Kenosha, Pleasant Prairie, Bristol, Paddock Lake, Salem Lakes, Somers, Twin Lakes, Brighton, Paris, Randall, and Wheatland.

HVAC & Refrigeration FAQs

What HVAC services does L.L.D. Heating & Cooling provide?

L.L.D. Heating & Cooling provides residential and commercial HVAC/R services including air conditioning repair and installation, furnace and heating repair, preventive maintenance, thermostat installation, indoor air quality solutions, gas line services, and commercial refrigeration. We focus on dependable service and straightforward solutions for homes and businesses.

What areas does L.L.D. Heating & Cooling serve?

We provide HVAC and refrigeration services throughout Lake County, Illinois and Kenosha County, Wisconsin, including Waukegan, Gurnee, Libertyville, Grayslake, Vernon Hills, Kenosha, Pleasant Prairie, Bristol, Somers, and surrounding communities.

Do you provide AC repair and installation in Lake County, IL?

Yes. L.L.D. Heating & Cooling provides air conditioning repair, replacement, installation, and maintenance throughout Lake County, IL. Whether your AC is not cooling properly or you need a new system installed, we can help determine the right solution for your property.

Do you repair furnaces and heating systems?

Yes. We provide furnace and heating repair, maintenance, and installation for residential and commercial properties. If your heating system is not keeping your property comfortable, L.L.D. can inspect the system and recommend an appropriate repair or replacement option

Does L.L.D. Heating & Cooling service commercial refrigeration equipment?

Yes. We provide commercial refrigeration repair and maintenance for businesses, including food-service and other commercial refrigeration applications. Our goal is to help keep critical refrigeration equipment operating reliably and reduce unnecessary downtime.

How often should I schedule HVAC maintenance?

Most HVAC systems should receive professional maintenance at least once a year. Many property owners schedule AC maintenance before summer and heating maintenance before winter to improve reliability, catch potential problems early, and help their equipment operate efficiently.

Can you help improve indoor air quality?

Yes. L.L.D. Heating & Cooling offers indoor air quality services including air filter replacement, thermostat solutions, and other HVAC improvements designed to support cleaner air and greater comfort inside your home or business

OUR PORTFOLIO

We invite you to browse our project portfolio to see some of our completed work in your area

Let's Get Started!

GET IN TOUCH TODAY

Whether you need a quick HVAC repair, preventative maintenance, a new system installation, or commercial refrigeration service, L.L.D. Heating & Cooling is ready to help.

We proudly serve homeowners and businesses throughout Lake County, IL and Kenosha County, WI, including Waukegan, Gurnee, Libertyville, Kenosha, Pleasant Prairie, and surrounding communities.

Contact L.L.D. Heating & Cooling today to request your free estimate.

With years of experience serving Waukegan, Lake County, IL, Kenosha County, WI, and surrounding communities, L.L.D. Heating & Cooling provides dependable HVAC/R service and quality workmanship for homes and businesses. Contact us today to request your free estimate.

Contact Us

Waukegan, Illinois

AREAS WE SERVE

Lake County, IL

Kenosha County, WI

Chicago, IL

Milwaukee, WI

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