Boulder, CO

Air Conditioning

If you are in the market for a new air conditioning (AC) system, you found the right company. You can trust our professionals at Kappler Mechanical to help you choose the best cooling system for your Boulder, CO, home.

A reliable air conditioner will eliminate excess moisture from the air while keeping you and your loved ones comfortable on those hot summer days. We can integrate your new air conditioner with your current system or help you switch to a ductless system.

Experiencing a repair problem? Our licensed repair experts will quickly diagnose any issues with your air conditioning unit and offer our best solutions to meet your needs. We always provide up-front quotes on all our work, and are always here when you need us.

Contact us at 720-513-6481 or request service online today.

Learn more about air conditioners.

Air Ducts

Faulty ductwork can create a lot of issues in your Boulder, CO, household. Leaks and tears create an escape route for the conditioned air while allowing dust, debris, odors, and other contaminants to infiltrate your home. Your heating, ventilation, and air conditioning (HVAC) equipment has to work that much harder to compensate for the escaping airflow—and you pay the price in reduced indoor air quality (IAQ) and higher utility bills.

Kappler Mechanical has a solution—our air quality specialists can inspect your air ducts for leaks and loose joints. We take pressurized readings to pinpoint tears and leaks. Plus, we can peek inside the ducts to determine if they need cleaning.

Contact us at 720-513-6481 or request service online today.

Learn more about air ducts.


More homeowners in Boulder, CO, are turning to boilers as a primary heating source, and it’s easy to see why.

Generated from baseboards and radiators, radiant heat can warm the objects in a room quietly and efficiently. Boilers are also a great system for anyone with allergies. These heating systems do not use air ducts and are much less likely to stir up dust and other allergens.

Our heating and cooling specialists at Kappler Mechanical will work with you to decide if this system is right for your family. Give us a call today, and be sure to ask about a free consultation.

Contact us at 720-513-6481 or request service online today.

Learn more about boilers.

Ductless Systems

A ductless system, or mini split, connects an outdoor condenser unit with an indoor air handler to warm or cool any part of your Boulder, CO, home. These systems work great if you’re adding a new addition to your home because you won’t need to extend your ductwork.

Give Kappler Mechanical a call to learn more about ductless systems. Air ducts tend to stir up dust and other allergens—ductless systems do not. A ductless mini split offers relief for members in your home with allergies or asthma and can help improve your home’s indoor air quality (IAQ).

Contact us at 720-513-6481 or request service online today.

Learn more about ductless systems.


Are you ready for a power upgrade? Many older homes in Boulder, CO, sometimes struggle with all the [electrical] demands in our modern world—if that’s the case with your home, give us a call. Kappler Mechanical has a team of licensed electricians ready to tackle any project, whether you need your home rewired or the power upgraded. We’re here to help!

Contact us at 720-513-6481 or request service online today.

Learn more about electrical.


You can trust Kappler Mechanical to maintain your Boulder, CO, furnace so it operates efficiently for years to come. We’re the hometown experts for your entire heating, ventilation, and air conditioning (HVAC) system.

We work with all major heating brands and offer preventative maintenance designed to save you on unexpected repairs and breakdowns. You want to do all you can to protect your heating investment.

Contact us at 720-513-6481 or request service online today.

Learn more about furnaces.

Heat Pumps

Reduce your carbon footprint and start using a heat pump to provide your Boulder, CO, home’s heating and cooling needs. Unlike a furnace that burns fuel to generate heat, a heat pump transfers warmth from the outdoors.

In the winter, heat pumps transfer heat from the outdoors to circulate throughout your home with the help of a blower and heat exchanger. In the summer, a heat pump works as an air conditioner (AC), removing the warm air from indoors. Kappler Mechanical can install, replace, repair, and maintain your next heat pump. Call us today!

Contact us at 720-513-6481 or request service online today.

Learn more about heat pumps.

Indoor Air Quality

Did you know the average person in the United States spends approximately 90 percent of their time indoors? On top of that, the US Environmental Protection Agency (EPA) ranks poor indoor air quality (IAQ) in some areas as a significant health risk.

Our licensed team at Kappler Mechanical will offer practical and sustainable solutions to improve the indoor air quality in your Boulder, CO, home. Call us today for a free consultation.

Contact us at 720-513-6481 or request service online today.

Learn more about indoor air quality.


Imagine driving your vehicle hundreds of thousands of miles without an oil change, brake check, or tire rotation. Of course, you would not do it! Applying that same proactive strategy to your heating, ventilation, and air conditioning (HVAC) equipment allows you to enjoy the most value from your investment.

Kappler Mechanical offers preventative maintenance options, tailored to fit your budget and needs. Give us a call today for a free consultation. We’ll help you increase the comfort in your Boulder, CO, home while lowering your energy bills.

Contact us at 720-513-6481 or request service online today.

Learn more about maintenance.

Water Heaters

Tired of ever-rising water bills? A high-efficiency water heater lowers your energy use while providing all the comfort you need for your Boulder, CO, household. Kappler Mechanical offers a quality lineup of tank and tankless water heater models tailored to fit your needs and budget.

Call us today for a free consultation. Our licensed plumbers can tackle any plumbing in your home.

Contact us at 720-513-6481 or request service online today.

Learn more about water heaters.

Zone Control Systems

Our certified specialists at Kappler Mechanical can upgrade your existing heating, ventilation, and air conditioning (HVAC) equipment into a state-of-the-art zone control system. Being able to control temperature settings in different areas of your Boulder, CO, home is a money saver and a comfort maker! Call us today for a free consultation.

Contact us at 720-513-6481 or request service online today.

Learn more about zone control systems.

“Getting a heat pump and mini-split system installed by Kappler Mechanical was a great experience from start to finish. We had a 22 year old gas furnace and want to move our home to an electric (and hopefully, more/all renewable energy) future. Kappler made it as easy as it could be and delivered everything exactly as estimated and scheduled in a very professional manner. From our first conversation with Project Manager, Brett Monnin, through the install led by Beck Halbeisen, we were impressed and confident we had made a good choice. Kappler also uses very convenient business methods for scheduling, billing etc..including automatic notifications via text and email. They were completely responsive or proactive with every communication. The system is working well and we could not be more satisfied.”
- Vicky Z.
“I was very satisfied with the assistance of Ruben. He is a very knowledgeable technician and very polite. I’ll ask for him next time I make an appointment”
- Esther B.
“Colin and Roy were professional and courteous. They were also committed to answering all of my questions about the work, and brainstorming ways to resolve some of the challenging issues that our old but charming house presented.”
- Rick A.
“As with all my experience with Kappler personnel, Ruben called in advance of his arrival. He was on time, described what he inspected and was very helpful in answering my questions.”
- Charles M.
“It was a pleasure to welcome Ulises again for the excellent service and caring attention he has always given when taking care of our HVAC system(s); he was accompanied by Reuben whom I was pleased to meet and thought to be a fine example of “new staff (?).” We value our long-term professional relationship with Kappler Mechanical, and were pleased to renew our service agreement for 2024.”
- Ken M.
“We really appreciate your knowledgeable and professional team. They did a great job on all aspects of the heat pump system design and the electrical and mechanical installation.”
- Jana M.
“We had an error code show up on our furnace yesterday and called Kappler today – the answering service was courteous and I received a timely call back from Kappler. Since the furnace wasn’t functioning properly, Kappler arranged for Travis to come out that afternoon. Travis promptly diagnosed the problem ( a fault code that another HVAC company couldn’t apparently diagnose) and proceeded to go ahead and perform routine winter maintenance as well. We switched to Kappler earlier this year and will continue with them for sure. They are the best HVAC company we have ever dealt with in Boulder.”
- Dennis B.