When your home’s comfort is on the line, you need an HVAC contractor you can trust to get the job done right. Whether it’s a furnace that’s stopped working in the middle of winter or an air conditioner that can’t keep up with the summer heat, having a dependable expert on your side makes all the difference.
GCS Heating and Cooling stands out as the HVAC company in Milwaukee, WI, that homeowners trust for dependable, high-quality heating and cooling services. With over 17 years of experience, GCS is a licensed and insured HVAC contractor known for our good customer service — it’s more than just our name; it’s our promise.
As a veteran-owned business, we bring the same dedication, integrity, and precision from our service to our country to every heating and cooling system we work on. From emergency HVAC repairs to new installations and energy-efficient replacements, GCS delivers the comfort, reliability, and peace of mind you deserve — all at a fair price. Get in touch with us for a free estimate.
At GCS, we understand that every home’s heating and cooling needs are different. That’s why we provide a full range of HVAC services to ensure your comfort all year long. Whether you need a quick repair, a seasonal tune-up, or a complete system replacement, our certified technicians have the expertise to handle it all.
Central AC Systems
Furnace Services
Mini Split Systems
Heat Pump Services
Boiler & Hydronic Heating
Emergency HVAC
We proudly work with trusted brands such as Goodman, Amana, Coleman, Bryant, and Carrier, ensuring that every system we install or repair meets the highest standards of performance and efficiency.
Heating Services To Stay Warm Through Wisconsin Winters
Wisconsin winters can be harsh, but with GCS, you’ll never be left in the cold. Our heating experts specialize in diagnosing and repairing all types of systems quickly and effectively. From older furnace models to modern, high-efficiency heat pumps and boilers, we have the training and experience to get your system running safely and smoothly.
We also offer new heating system installations designed for energy efficiency and long-term comfort. Whether you’re upgrading an outdated furnace or exploring alternative heating options like hydronic or radiant systems, GCS will help you choose the best solution for your home and budget.
Cooling Services To Stay Comfortable All Summer Long
When summer temperatures rise, GCS keeps your home cool and comfortable. Our technicians are experts in air conditioning repair, installation, and maintenance, providing efficient solutions that help you stay cool without breaking the bank.
We service all makes and models and specialize in energy-efficient systems that reduce your cooling costs while keeping your home perfectly chilled. Whether you’re installing a new central air system or upgrading to a ductless mini split, we’ll help you find the best fit for your space.
Fast, Reliable Emergency HVAC Response
When your heating or cooling system breaks down unexpectedly, you can’t afford to wait. At GCS Heating and Cooling, we understand that HVAC emergencies don’t always happen during regular business hours, which is why we offer prompt emergency HVAC services throughout Milwaukee, WI, and the surrounding areas.
Our licensed and EPA-certified technicians are ready to respond quickly, diagnose the issue, and get your system running again as soon as possible. Whether your furnace fails on a freezing night or your AC stops cooling during a heatwave, we arrive prepared with the tools, parts, and expertise to restore your comfort fast.
We don’t just fix the problem — we do it right the first time, with honesty, professionalism, and respect for your home. Need service fast? Our emergency HVAC response is available when you need us the most — because your comfort can’t wait.
Why Homeowners Choose Us As the Local HVAC Contractor?
At GCS Heating and Cooling, we believe that quality service starts with integrity. We treat every customer like family — with honesty, respect, and professionalism. We are committed to providing good customer service.
17+ Years of HVAC Experience
Licensed, Insured & EPA-Certified
Veteran-Owned & Operated
Free Estimates & Veteran Discounts
Emergency Repair Services
Trusted Brands & Quality Workmanship
Whether it’s a simple repair or a full system replacement, we take the time to do the job right — because your comfort and satisfaction are our top priorities.
Veteran-Owned Values, Local Commitment
As a veteran-owned HVAC company, GCS brings a sense of discipline, reliability, and commitment to excellence that is evident in every project we take on. We take pride in serving our community here in Milwaukee, WI, providing the same level of dedication to our customers as we did in our service to the nation. We’re also proud to offer special discounts for veterans as a small way of giving back to those who have served.
Experience the GCS Difference Today
When you choose GCS, you’re not just hiring an HVAC contractor — you’re partnering with a team that genuinely cares about your comfort, your home, and your satisfaction. From the first call to project completion, we make it our mission to deliver good customer service every step of the way. No matter the season, no matter the system — GCS has you covered.
Call us at
(262) 202-4666 to request a service or schedule your free estimate today. Experience the professionalism, expertise, and value that make GCS the trusted name for HVAC services in Milwaukee, WI.