Servicing, Parker | Castle Rock | Lone Tree | Elizabeth | Franktown | Castle Pines | Aurora | Foxfield | Centennial | Littleton | Highlands Ranch | 

Onken Mechanical Service, LLC Reviews

Air Conditioning & Heating service is what we do. Our Goal is to be the one company you will recommend to family and friends. I am delighted to live in Elizabeth, CO and serve the people of Parker, Elizabeth, Castle Rock, Highlands Ranch, LoneTree,  Castle Pines, Centennial, SE Aurora, Franktown and surrounding areas. We service the south metro area and surrounding communities. If you need maintenance or new equipment you can feel comfortable with our 20 years of experience in the industry and our dedication to keeping your home comfortable healthy and safe. We are licensed, insured and NATE certified and have a great team of skilled tech's to repair or replace your heat or air conditioner. We also work on light refrigeration equipment and chillers.

We've got a number of different options to help you with all of your heating & air-conditioning needs and Heating and Air conditioning repair. We've got 20 years of experience to help you determine how to tackle all of your home comfort needs more accurately than other heating and air conditioning companies, Heating and Air conditioning in Parker, Castle Rock and Highlands ranch. Furnace and air conditioner repair and replacement.

 OMS Inc. Heating and Air Conditioning has been in the business for over 20 years and we've paid enough attention to learn a thing or two over those years. We've even worked hard to  make sure that our NATE Certified tech knows the most up-to-date information about all of your heating and cooling needs. Keeping you Comfortable and Safe is our goal! Furnace and air conditioner repair in Parker and surrounding areas

​​​NATE Certified Heating and Air Conditioning in Parker

Our Team

​We have worked with everything that's out there. So, rest assured that we have the knowledge to service even the toughest HVAC issues and repairs.
We've also got a skilled set of workers who are knowledgeable about any type of evap cooler you have.
With you and your loved ones in mind, we've started offering different products to help with your home's air quality.​
We have assisted insurance companies with forensic fire investigations to confirm or rule out the involvement of HVAC equipment in a loss claim. Your source for heating and air conditioning in Parker. Furnace and Air conditioner repai


Onken Mechanical Service 6/20/2017 
Mark K.
I can't say enough good about Glen! He showed up on time, correctly diagnosed the problem and resolved it right away. I had already dealt with another AC technician who ripped me off and never figured out why my AC didn't work. Glen was very conscientious, answered all my questions, made sure I understood what the problem was, what my repair options were, and fixed the system. After almost 2 weeks without AC, it was wonderful to wake up in a 70 degree house instead of a 79 degree house! He cleaned up everything he touched and left the house like he found it. He called the next day to make sure we were happy. I wouldn't hesitate to recommend his services to anyone. 

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OMS Heating & Air Conditioning

Whats the word on Oms Inc.? Here is what some of our customers are saying;

Review by a homeowner in Aurora, CO
Project: Repair or Service a Central Air Conditioning System
This job was to service and certify the furnace and service the AC. He and his assistant were considerate and easy to talk to. Took their shoes off at the door and cleaned up after themselve

Call 720-670-0459

  Heating & Air Conditioning   OMS INC

Designer of Home Comfort solutions - THE ONE YOU WILL RECOMMEND! ​Heating and Air Conditioning Parker     

  NATE Certified Heating and Air Conditioning in Parker - Highlands Ranch - Castle Rock 

Repair, Service, Sales, Installation, replacement of gas heating appliances such as Furnaces, Boilers , Water heaters and Air conditioning