HVAC Installation & Replacement In Longmont, CO And Surrounding Areas

Stay Warm All Winter With Professional HVAC Installation From Mountain Valley Plumbing, Heating And Cooling

When cold weather hits Colorado, having a reliable, properly installed HVAC system is essential for comfort, safety, and efficiency. Whether you’re building a new home, upgrading an outdated system, or replacing a HVAC system that’s no longer reliable, Mountain Valley Plumbing, Heating and Cooling provides expert HVAC installation and replacement services in Longmont, CO and surrounding areas.

Our licensed technicians install high-quality HVAC systems designed to deliver consistent heat, improved energy efficiency, and dependable performance. From selecting the right system to precision installation and final testing, we ensure your new HVAC system is set up for long-term comfort and reliability.

Benefits Of Professional HVAC Installation & Replacement:

High-efficiency heating – Modern furnaces provide powerful warmth while reducing energy consumption.
Proper system sizing – Every furnace is carefully sized to your home’s layout and heating demands.
Expert installation – Our technicians follow manufacturer specifications and all safety codes.
Reliable furnace replacement – Seamless removal of old equipment and installation of a dependable new system.
Improved indoor comfort – Even heat distribution and better airflow throughout your home.
Lower operating costs – Efficient furnaces help reduce monthly heating bills.
Long-term performance – Professional installation helps extend system lifespan and protects warranties.

Our HVAC installation process is thorough and customer-focused. We begin with a detailed assessment of your home’s heating needs, help you choose the best system for your budget and comfort goals, and ensure all components—ductwork, ventilation, and thermostat controls—are properly configured. We maintain clear communication, respect your home, and stand behind our work with dependable warranties and satisfaction guarantees.

With over 50 years of combined experience, Mountain Valley Plumbing, Heating and Cooling delivers trusted heating solutions built to last.

Contact Mountain Valley Plumbing, Heating and Cooling today to schedule HVAC installation or replacement in Longmont, CO and surrounding areas—because your comfort deserves expert care.

Request Service

At Mountain Valley, we understand the urgency of HVAC issues and their impact on your daily life. That’s why we are committed to providing fast and efficient HVAC services to the residents of Longmont, CO. Our team of experienced HVAC technicians are available to tackle any problem, big or small, and we take pride in delivering prompt and reliable service.

We Can Assist You With:

Heating Replacement

Heating Repair

Heating Maintenance

AC Replacement

AC Repair

AC Maintenance

Heat Pumps

Air Duct Cleaning

Ready To Contact Us?

Our Customer Reviews

"I have used Mountain Valley Plumbing and Heating over the past 20+ years for upgrading plumbing systems into ESTES PARK houses, replacing water, heaters, plumbing fixtures, central heating units, and much more with complete satisfaction. Once I call their office, my needs are scheduled according to their calendar, and the work performed satisfactorily, in a timely fashion, and at a very reasonable price all the time. They have performed perfectly and receive my five-star rating."
William L

"Mountain Valley gave a reasonable estimate and did what they said they would do. A/C installed and working great. The installers were super nice - it took them over 8 hours and they never complained once. They interfaced well with the electrician and made sure everything was working properly before leaving. Also they cleaned up and explained everything. Would certainly recommend them."
Don G

"Straight forward, knowledgeable, not pushy, very informative. I’ve dealt with some larger HVAC services companies, and I unquestionably prefer to work with Mountain Valley. They focus on addressing your needs rather than trying to sell you something. I like that, will always go back to them for any HVAC service or replacement. And their pricing is very competitive."
Greg G

"I have used Mountain Valley Plumbing and Heating over the past 20+ years for upgrading plumbing systems into ESTES PARK houses, replacing water, heaters, plumbing fixtures, central heating units, and much more with complete satisfaction. Once I call their office, my needs are scheduled according to their calendar, and the work performed satisfactorily, in a timely fashion, and at a very reasonable price all the time. They have performed perfectly and receive my five-star rating."
William L

At Mountain Valley Plumbing, Heating and Cooling, your comfort is our priority from the moment you call. Every repair is handled by experienced, background-checked technicians who take the time to get it right. We believe in integrity, clear communication, and fixing the problem—not just the symptoms.

With flat-rate pricing and decades of experience, you can count on us for dependable HVAC repair without hidden surprises. Our goal is to make your home comfortable, your system reliable, and your experience stress-free. When the heat goes out, trust Mountain Valley to bring it back quickly and safely.

HVAC Installation & Replacement In Longmont, CO And Surrounding Areas

Benefits Of Professional HVAC Installation & Replacement:

We Can Assist You With:

Our Customer Reviews

Proudly Serving

Residents in the areas surrounding

Contact Our Specialists Today

Your Trusted Experts For Total Comfort Solutions