Business Details
31 Years
experience
Emergency
services
Your Trusted HVAC Partner in Boulder, CO
Kj Thomas Mechanical has been serving Boulder County for over 30 years, delivering honest, hands-on heating and cooling solutions with a personal touch. Founded and run by Karl Thomas, a local tradesperson, we are proud to be a locally owned and operated business, offering personalized service from licensed, seasoned technicians. Our commitment to honesty, reliability, and fair pricing sets us apart, with over four decades of hands-on experience in installing, servicing, and repairing HVAC systems.We specialize in heating installation, furnace repair, air conditioning services, ductless mini-split systems, and emergency heating and cooling repairs. Our team prioritizes customer satisfaction, providing timely service that fits your schedule while ensuring your home remains comfortable year-round. As a trusted local HVAC expert, we focus on building long-term relationships through exceptional service and expertise.
Services
AC Installation
Furnace Repair
Heat Pump Maintenance
Ductless Mini-Split Installation
Emergency Heating Repair
Details
- Year established: 1995
Highlights and features
- We have over 30 years of local HVAC experience.
- Our team includes certified technicians with specialized expertise.
- We offer 24/7 emergency heating and cooling repairs.
- Our service includes transparent pricing and no hidden fees.
- We provide flexible financing options through Wells Fargo.
What people say
Excellent work
Prompt service
Knowledgeable technicians
Fair pricing
Reliable repairs
Services
AC Installation
We install energy-efficient central and ductless air conditioning systems tailored to your home's needs. Our technicians ensure proper sizing and installation for optimal cooling performance and energy savings. Customers benefit from improved indoor comfort and reduced utility costs with modern AC technology.
Furnace Repair
Our experts diagnose and fix furnace issues quickly, including ignition problems, thermostat malfunctions, and airflow issues. We service all major brands and ensure safe, efficient operation for reliable winter heating in Boulder's climate.
Ductless Mini-Split Installation
We install ductless mini-split systems for homes without existing ductwork, offering zoned temperature control and energy efficiency. These systems provide versatile heating and cooling solutions for additions, garages, or specific rooms.
Heat Pump Maintenance
Regular maintenance extends heat pump lifespan and efficiency through coil cleaning, refrigerant checks, and system diagnostics. Preventive care helps avoid costly breakdowns while maintaining consistent indoor comfort year-round.
Emergency Heating Repair
Available 24/7 for heating emergencies, our technicians respond promptly to restore warmth during critical failures. We prioritize rapid diagnosis and repair of furnaces, boilers, and heat pumps during cold weather emergencies.
People
Karl Thomas
Founder
With over 40 years in the HVAC industry, Karl established Kj Thomas Mechanical to provide honest, community-focused service. He oversees operations and ensures technical excellence across all projects.
Cooper
Lead Technician
Certified HVAC technician with 15+ years experience, specializing in furnace diagnostics and emergency repairs. Known for clear communication and thorough service during home visits.
Auggie
Senior Technician
Expert in ductless mini-split installations with a focus on energy-efficient solutions. Recognized for meticulous workmanship and customer education during system installations.
Questions
What HVAC services do you offer in Boulder?
We provide AC installation, furnace repair, heat pump maintenance, ductless mini-split systems, emergency heating/cooling repairs, and indoor air quality solutions.
Do you offer emergency HVAC services?
Yes, we provide 24/7 emergency heating and cooling repairs to address urgent comfort needs in Boulder and surrounding areas.
Are financing options available for HVAC systems?
Yes, we offer flexible financing through Wells Fargo, including 0% APR for 36 months on qualifying HVAC upgrades.
How can I schedule HVAC maintenance?
Call 303-435-8141 or use our online scheduling tool to book furnace tune-ups, AC maintenance, or system diagnostics.
What makes your HVAC technicians qualified?
Our team includes certified professionals with decades of combined experience in residential and commercial HVAC systems.
