Reliable Heating and Cooling Services for Your Home and Business

Reliable HVAC Professionals

Experience year-round comfort and efficiency with our expert heating and cooling services. We offer installation, maintenance, and repair. Our certified technicians provide top-tier solutions tailored to your needs. With Groulx Mechanical Heating & Cooling, you will enjoy reliable and affordable service that keeps your home or business at the perfect temperature. Contact us today to get started!

Your Trusted Local Contractor for Heating and Cooling Services

In Northern Colorado, maintaining optimal indoor comfort is essential. At Groulx Mechanical Heating & Cooling, we understand the importance of maintaining a comfortable indoor environment. We offer comprehensive heating and cooling services to ensure that your home and business remain comfortable year-round. Our solutions include humidity control and natural ventilation schemes to enhance air quality and overall comfort. We specialize in a variety of services to meet all your heating and cooling needs. Plus, we install and service programmable and smart thermostats to help you achieve optimal energy efficiency and, ultimately, greater energy savings. 

As a local heating and cooling contractor, we have a deep understanding of the specific needs of both residential and commercial heating and cooling projects in the area. We provide excellent service to ensure you’re never left in the cold or heat. Our experienced heating and cooling technicians are always ready to provide the highest quality of service. You can trust Groulx Mechanical Heating & Cooling to deliver efficient and reliable heating and cooling systems that keep your space comfortable and energy-efficient.

Your Trusted Local Contractor for Heating and Cooling Services
About Groulx Mechanical Heating Cooling

About Groulx Mechanical Heating & Cooling

Groulx Mechanical Heating & Cooling is a family-owned and operated business. We have been serving Longmont and nearby areas in Northern Colorado for nearly a decade. As a local heating and cooling company, we pride ourselves on our credentials and our commitment to quality. To us, every client is like family to us. That’s why we offer top-notch heating and cooling services with a solid guarantee.

Moreover, our certification and good ratings add to our qualification as a trusted local contractor. We hold North American Technician Excellence (NATE) Certification. This is the only national certification accepted by the entire HVAC industry. As NATE certified, our technicians are highly skilled and expert in handling all your heating and cooling systems professionally and safely. Additionally, we are fully licensed and insured which allows us to maintain high industry standards. Our Google Guaranteed status boosts customer confidence. This offers additional protection if something goes wrong. Lastly, our perfect A+ rating with the BBB Accredited Business reflects our dedication to customer satisfaction.

At Groulx Mechanical Heating & Cooling, we provide the best in cooling and heating technologies. We always deliver energy-efficient solutions that help you save on energy bills while maintaining optimal indoor air quality. You can rely on us for indoor comfort in your home and business year-round. Our team always focuses on energy efficiency and high-performance systems. We are open 8 AM to 6 PM Mondays to Fridays. 

Groulx Mechanical Heating & Cooling Services

At Groulx Mechanical Heating & Cooling, we offer a comprehensive range of services to meet all your heating and cooling needs. Here’s what we can do for you. 



Our cooling services include the installation and maintenance of air conditioning systems. Our technicians are experts in handling ductless air conditioners, mini split air conditioners, and central air conditioning systems. We work with leading brands and offer energy-efficient solutions to help you save on your utility bills. We will make your indoor environment comfortable during the hot summer months. 



Stay warm and cozy during the cold months with our comprehensive heating services. We provide expert installation, maintenance, and repair of various heating systems. Those include heat pumps, gas furnaces, space heaters, and mini split heaters. You can rely on our skilled technicians to keep your heating unit operating efficiently during the winter.



Our HVAC services encompass a full range of heating, ventilation, and air conditioning solutions. We specialize in system design, installation, and maintenance to improve indoor air quality and ensure optimal performance of your HVAC systems. We use advanced controls and smart thermostats to optimize your heating and cooling units. This improves airflow and regulates indoor temperature.

Why Choose Groulx Mechanical Heating & Cooling

Choosing Groulx Mechanical Heating & Cooling means opting for reliability, expertise, and unparalleled customer service. Here’s why we stand out:

Why Choose Groulx Mechanical Heating Cooling

Licensed and Insured

Our technicians are fully licensed and insured. Our certification allows us to provide professional and reliable service for all your heating and cooling needs. This assures you that our work meets the highest standards of safety and quality.

Free Quotes

We believe in transparency. That’s why we offer free quotes for all our services. Our skilled and trained technicians will conduct a thorough exam before replacing your unit at no charge. If needed, we will install the highest-rated appliances.

Safety Assurance

Safety is at the forefront of everything we do. Our team follows strict safety protocols for every job we take. We also take necessary precautions to prevent any risk to your home or family. Your family’s health and safety are our top priorities. 

Free Second Opinions

Need a second opinion? No problem! We will send a certified technician to your home or business. During the visit, you will be given all the options with the latest HVAC technology available. 

Customer Satisfaction Guaranteed

We combine our expertise with the highest quality parts and equipment to deliver outstanding service.  All of our services include a warranty. Our efficient heating and cooling solutions will enhance your home’s comfort and energy efficiency.

Our Guarantee

Free Quotes

We will provide a thorough exam before deciding to replace your unit at no charge. If needed, our skilled technicians have been trained to install the highest rated appliances.

Customer Satisfaction Guaranteed

We combine our use of the highest quality parts and equipment and our dedication to delivering exceptional service. Warranty is included with all services.

Free Second Opinions

If you want a second opinion no problem! We’ll send a certified technician to you so can rest assured you have been given all the options with the latest HVAC technology on the market.

Industries We Service

Groulx Mechanical Heating & Cooling caters to a wide range of industries. We offer our heating and cooling services to:

  • Residential
  • Commercial
  • Institutional
  • Industrial

Not sure where you fit in but interested in our services? Contact us at (720) 329-3429 or email us at Feel free to reach out, and let’s find the best heating and cooling options for you!

Residential heating and cooling services
Residential heating and cooling services

How to Get Our Professional Heating and Cooling Services

Getting started with Groulx Mechanical Heating & Cooling is simple and straightforward. Follow these steps to experience our top-notch services:

  1. Contact Us. Reach out to us via phone at (720) 329-3429 or email us at to discuss your needs. Whether you require ductless heating and cooling, a mini split ac heater, or a central air conditioner, we are here to assist you. Our office hours are from 8 AM to 6 PM; Monday to Friday. 
  2. Schedule an Appointment. We’ll set up a convenient time to assess your heating and cooling requirements. Our experts will evaluate your space to determine the best heating elements and cooling air solutions. This will enable maximum energy savings and comfort levels.
  3. On-Site Evaluation. Our professionals will visit your location to perform a comprehensive assessment of your specific needs. We consider factors such as ductless heating and cooling units, heat pump systems, and programmable thermostats to design an efficient and effective solution for your space.
  4. Receive a Custom Quote. We provide a detailed, free quote outlining the scope of work and costs. Whether it’s for a ductless air conditioning system or programmable thermostats, our quotes are transparent with no hidden fees. We aim to offer affordable heating and cooling services tailored to your budget.
  5. Service Completion. Our skilled technicians perform the necessary installations, repairs, or maintenance. We are equipped to handle a wide range of systems. We use high-quality air handlers, heat exchangers, and evaporator units to guarantee optimal performance.

Clients’ Testimonials About Our Heating and Cooling Services

Our clients’ testimonials speak volumes about our commitment to excellence. We take pride in delivering services that leave our customers delighted and comfortable.

Positive: Professionalism, Quality, Responsiveness, ValueGroulx Mechanical has quickly become our go-to for our clients in need of heating and cooling repair. Mark and his team are always quick to respond, knowledgeable, and their customer service is exceptional. If you have any heating and cooling needs, I highly suggest Groulx Mechanical!

Groulx’s team was awesome! Installation of a Mini-Split was done efficiently and we love the fact that we don’t have to freeze our lower levels to push cold air to our bedroom over the garage now. Our bedroom is really “chill” and the system is super quiet! Groulx Mechanical ROCKS!!!

Positive: Professionalism, Punctuality, Quality, Value. Great small local company. Skilled, efficient, and friendly. It was a pleasure to do business with them. I will use them for ongoing maintenance and potential problems in the future.


Industrial heating and cooling services

Groulx Mechanical Heating & Cooling Service Areas

We proudly serve the following areas across Northern Colorado. You will receive the best heating and cooling services wherever you are.

  • Longmont
  • Boulder
  • Loveland
  • Fort Collins
  • Greeley
  • Johnstown
  • Windsor
  • Evans
  • Lyons
  • Fort Lupton
  • Brighton
  • Thornton
  • Westminster

Can’t find your area? Contact us at (720) 329-3429 and let’s discuss how we can help you.

Frequently Asked Questions

Signs that your system needs repair include unusual noises and uneven heating or cooling. You may also notice that your energy bills increase and frequent cycling on and off.

We recommend servicing your HVAC system at least twice a year. Doing so leads to optimal performance and longevity.

Consider the size of your space, your climate, and your energy efficiency ratings. Also, think about your specific heating and cooling needs.

Yes, we offer energy efficiency assessments. We can recommend upgrades like programmable thermostats, improved insulation, and high-efficiency HVAC systems that will help lower your energy costs.

You can improve indoor air quality through regular maintenance. Use high-quality clean filters and install air purifiers for the best results.

A smart thermostat is highly recommended for maximizing energy savings. It provides better control over your indoor environment.

Our Office

2447 Winding Drive Longmont, CO

Call Us

(720) 329-3429

Email Us