Click here if you would like to go to our northern Colorado site. 

Click here if you would like to go to our northern Colorado site. 

Click here if you would like to go to our northern Colorado site. 

Plumbline technician smiling at camera

Turn to the AC Experts Castle Rock Homeowners Trust

Hire an AC Repair Specialist

  • Same-day AC repairs.
  • Emergency service available 24/7.
  • Upfront pricing.

100% satisfaction guaranteed—or we'll make it right

Fast, Dependable Air Conditioning Repair

Plumbline - Castle Rock AC RepairWe know that air conditioning issues always seem to happen at the most inconvenient times. That why when you need your air conditioner repaired, you can depend on the expert HVAC technicians at Plumbline to respond to your home quickly and to do the job correctly. 

We have been fixing air conditioners in Castle Rock, CO homes since 1998. Our friendly technicians will arrive at your home with the tools, training and experience to make sure the job is done right. It doesn't matter what type, make or model of cooling system you have, we'll be able to help!

At Plumbline, we are committed to doing everything we can to ensure the job is done correctly and you are 100% satisfied with our work. Plus we back up our work with some of the best warranties and guarantees in the industry. 

AC Tune-Ups & Regular Maintenance

Air conditioner manufacturers recommend regular professional check-ups for your air conditioner to increase its lifespan and reduce the need for repairs.

To avoid significant AC issues, we suggest keeping your unit on a maintenance schedule, which helps maintain its efficiency. The experts are Plumbline are here to make sure your AC runs smoothly and effectively. Don't wait – schedule a tune-up now!

AC Installation & Replacement Services

Is it time for a new cooling system in your home? We understand that replacing your existing AC is a considerable investment. And choosing the right company for the job is a big decision. When you choose Plumbline for your air conditioning installation or replacement, you can rest easy knowing our professional and experienced team will handle the job correctly, quickly, and courteously.


What's included in your AC repair

  • Upfront price options

    Once your AC repair specialist arrives, he or she will diagnose what's wrong with your air conditioner and give you repair options and the prices for each, which you approve before any work begins.

  • Same-day service

    With our fully-stocked trucks, your Castle Rock HVAC technician can fix your air conditioner today. So your present problem will soon be a thing of the past.

  • 1-year warranty

    All repairs come with a 1-year parts and labor warranty, which means we guarantee the quality of the part and our work within 1 year from the day we fix your AC.

Featured Castle Rock AC repair story


Replacing an AC dual capacitor


Jean, a Castle Rock homeowner contacted us for an AC tune-up. However, Billy, our technician discovered that her AC's "dual capacitor" wasn't working properly. The dual capacitor is essentially a battery that jolts the AC's motors on and then keeps them running.


Billy replaced the dual capacitor that same day.

Customer Testimonial

"Professional and Efficient."

Billy Wright was professional and efficient. He was easy to understand what needed to be done.

Jean M. from Castle Rock

Need help from a Colorado Plumbing, Heating, Cooling, or Electrical Specialist? 

For your convenience, you can request an appointment in one of two ways:

  • Call us at (303) 436-2525 for immediate assistance.
  • Click on the button below to schedule your appointment online.