Colorado Boiler & HVAC Specialists
Serving Golden, Steamboat Springs, and Surrounding Colorado Areas
Welcome to Jeffco Mechanical
Jeffco Mechanical
is your trusted partner for professional boiler and HVAC services in Golden, Steamboat Springs, and the surrounding Colorado communities. We specialize in boiler replacements, upgrades, and repairs, as well as HVAC repairs, system replacements, and water treatment solutions designed to improve comfort, efficiency, and reliability. Our experienced team is committed to delivering quality workmanship, honest recommendations, and dependable service on every project. Whether you need a quick repair, a complete system upgrade, or preventative water treatment to protect your equipment, Jeffco Mechanical
provides customized solutions that keep your home or business comfortable throughout every Colorado season.
CONTACT US
For more information call us at
970-896-7060 or complete the form.
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why choose us?
Experienced & Dependable Service
We bring the knowledge and hands-on experience needed to handle everything from boiler repairs to complete HVAC system replacements. We take pride in delivering reliable solutions that keep your heating and cooling systems operating at their best.
Honest Recommendations
We believe our customers deserve straightforward advice and transparent communication. We carefully evaluate your system and recommend only the services or replacements that truly fit your needs and budget.
Quality Workmanship
We use proven techniques and quality materials to ensure every repair, upgrade, and installation is completed to the highest standards. Our goal is to provide long-lasting performance and dependable comfort for every customer we serve.
Customer-Focused Solutions
We understand that every property has unique heating and cooling needs, which is why we provide personalized service and tailored solutions. From water treatment to boiler and HVAC replacements, we work hard to exceed expectations with every project.



CLIENT TESTIMONIALS
From the moment the technician arrived, everything was seamless. The professional from Jeffco Mechanical was friendly, knowledgeable, and explained each step of the service clearly. I especially liked how thorough the HVAC maintenance was—they checked every component, cleaned the filters, and made sure the system was running efficiently. The work was completed on time and the crew left the house neat and comfortable. I would definitely recommend Jeffco Mechanical for any residential HVAC needs.
Peter C.
5/5 stars – each star for customer care, product quality, atmosphere, speed, and value. Jeffco Mechanical provided top-notch professionalism from start to finish. The technician was courteous, explained everything clearly, and completed the HVAC maintenance quickly. I was impressed with their attention to detail and reliable service. Highly recommend this HVAC contractor for any residential needs.
Paul G.
Ed W.
Jeffco Mechanical was extremely friendly and professional. The technician arrived right on time, was very knowledgeable, and completed the boiler maintenance quickly and reliably. I appreciated the clear communication and the fact that they were courteous throughout the visit. I highly recommend them as a trustworthy HVAC Contractor.
Jeffco Mechanical was extremely professional and communicated clearly from start to finish. He arrived on time, and showed real integrity while handling our HVAC contractor needs. Great service – would definitely use them again. Thanks Daryl.
Kurt W.
Greg W.
Jeffco Mechanical did a great job on my HVAC repair. The job came in under the projected price and was done quickly. I will recommend them to all my friends and family.
Jeffco Mechanical was fantastic. The most reliable, responsible and reasonable contractor I have come to know in decades!
Roger S.

BOILER REPLACEMENTS AND UPGRADES
When a boiler reaches the end of its life, we replace it with equipment sized against measured heat loss rather than the old nameplate. Our team handles removal, near-boiler piping, venting, and commissioning so your system performs as rated.
BOILER REPAIRS
Heat failures rarely wait for business hours, so we diagnose the actual fault instead of swapping parts and hoping. Our technicians trace ignition problems, circulator failures, pressure loss, and zone valve faults, then repair them with parts we already carry.
HVAC REPAIRS
Furnaces, air conditioners, heat pumps, and ductwork all get the same methodical treatment from us. We test airflow, combustion, refrigerant charge, and system controls before recommending anything, because the symptom you notice often starts somewhere else in the system entirely.
HVAC REPLACEMENTS
Replacing equipment is our chance to fix what the old installation got wrong. We run load calculations, evaluate the duct system, and match furnaces, air conditioners, heat pumps, or mini splits to how your building actually gains and loses heat.
WATER TREATMENT
Hard water quietly destroys the equipment we install, which is why we treat the cause rather than symptoms. Our testing identifies hardness, iron, and sediment, then we size softeners, filtration, and inhibitor programs that protect your plumbing and heating systems.


Boilers, HVAC, and Water Treatment Handled Under One Roof in Steamboat Springs and Golden, Colorado
Comfort is one of those things nobody thinks about until it stops working, usually on the coldest morning of the year. Serving all across Steamboat Springs and Golden, Colorado, Jeffco Mechanical builds, repairs, and maintains the systems that keep that from happening, covering boiler replacements and upgrades, boiler repairs, HVAC repairs, HVAC replacements, and water treatment under one roof. Our team has spent 40+ years inside mechanical rooms across this state, long enough to recognize which equipment holds up here and which choices owners regret three winters later. Whether you need a quick repair, a planned upgrade, or preventative treatment that protects everything downstream, we build the solution around your building.
Steady Heat, Clean Water, and Systems That Simply Work
Mechanical systems earn their keep by being unremarkable, running quietly in the background while you get on with everything else. That is the standard we hold ourselves to at Jeffco Mechanical on every boiler, furnace, air conditioner, heat pump, and treatment system we touch across Steamboat Springs and Golden, Colorado, and the communities between them. We show up when we say we will, quote honestly, use parts that hold up in this climate, and explain the reasoning behind every recommendation so you are never guessing about what you are paying for.
Areas We Serve
Jeffco Mechanical proudly serves homeowners and businesses throughout Steamboat Springs, Golden, and surrounding Colorado communities. With over 40 years of experience, we provide trusted HVAC, boiler, and water treatment services backed by quality workmanship, dependable solutions, and exceptional customer care.
Westminster, CO
Centennial, CO
Thornton, CO
Littleton, CO
Wheat Ridge, CO
Commerce City, CO
FAQs - Frequently Asked Questions
What areas do you cover for boiler, HVAC, and water treatment work?
Our work covers Steamboat Springs, Colorado, and Golden, Colorado, along with the mountain towns and Front Range communities in between. If you are unsure whether your address falls within that range, send the location through our contact page, and we will confirm.
How do I know whether my boiler should be repaired or replaced?
Three things decide it: age, repair frequency, and the condition of the heat exchanger. A sound unit under fifteen years old usually justifies repair, while repeated failures and rising fuel bills point toward replacement being the cheaper path.
What size boiler will my home need if we replace the current one?
Never whatever is on the old nameplate. We run a room-by-room heat loss calculation that accounts for insulation, window area, and altitude, because oversized equipment short cycles, wastes fuel, and creates more comfort complaints than undersized equipment does.
How quickly can you respond when a system stops producing heat?
No heat calls move to the front of the schedule, particularly during cold stretches when frozen pipes become the second problem. Our trucks carry the parts that fail most often, which means many repairs finish on the first visit.






