Find top-rated Pros in your area
Enter a zip code and get matched to businesses near you.
Geo Icon
Default business cover photo

Onken Mechanical Service, LLC

4.9(
7
)
Central A/C Installation, Central A/C Service or Repair, Heat Pump Repair or Service,

About us

Your Colorado heating & air conditioning contractor is Onken Mechanical Service, LLC. Call Onken Mechanical Service, LLC, for furnace repair, heating & air conditioning in Parker, Castle Rock, Elizabeth, Centennial, South Aurora, Denver and Central Colorado. Get reliable NATE certified expert repair, diagnostics, services, sales & installation for boilers, water heaters, air filters, igniter, blower, control board, thermostat, controls and automation. We fix, repair, install and do forensic HVAC consulting. We are family owned and operated and want to earn your business. For fast service and repair of your air conditioner or furnace problems. Call now, before it gets worse!

Business highlights

17 years of experience

Services we offer

Central Air Conditioning Repairs, Electric Furnace Repairs, Gas Furnace Repairs

Amenities

Free Estimates

Yes

Accepted Payment Methods

  • CreditCard
Reviews
4.97 Reviews
Write a review
Number of StarsImage of DistributionNumber of Ratings
5
86%
4
14%
3
0%
2
0%
1
0%
Write a review

Filter reviews by service

Showing 1-7 of 7 reviews
Mark A.
Aug 2026
5.0
Central A/C Installation
$15,000
OMS HVAC/Mechanical (Glen Onken) AND TEAM are the best HVAC folks I’ve had the pleasure to work with. We built our home 23 years ago and obviously put in the basic furnace/AC for cost reasons. When the AC unit went bad, Glen came out and BEAT everyone on service and price. We were able to get a Bosch complete system (Furnace/AC top of the line) with heat pump and high efficiency. Glen sized it to use our existing duct work and we have been extremely happy. He put sensors around the house we can program to a zone using our Smart Phone app remotely from anywhere. THE COMFORT LEVEL in our house has gone up 1000%. We control the humidity, the temp by zone, AND OUR UTILITY BILLS HAVE GONE DOWN by $30-$50 /month. Oh and don’t forget, we got the REBATES from Black Hills (Gas) and Core (Electricity) and STATE OF CO (tax rebate) making this whole system the same or less than other quotes for a basic furnace/AC combination (which we started out looking for). THANK YOU GLEN and Team.
Diane S.
Apr 2015
5.0
Central A/C Service or Repair
Yes, I recommend this pro
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 themselves.
Mari M.
Aug 2014
5.0
Central A/C Service or Repair
Yes, I recommend this pro
Good
Vicente Z.
Jun 2014
5.0
Central A/C Service or Repair
Yes, I recommend this pro
Lot of knowledge in the field, great customer service and good work ethics.
Natali S.
May 2014
5.0
Central A/C Installation
Yes, I recommend this pro
They were very knowledgeable, extremely courteous and even replaced a broken spicket for me! I would certainly recommend them to any of my friends trying to install or replace AC.
Jim I.
Dec 2013
4.0
Yes, I recommend this pro
$79
He quickly found the problem and corrected it. He took the time to explain the situation.
Dolores B.
Dec 2013
5.0
Gas Furnace / Forced Air Heating System Repair Service
Yes, I recommend this pro
$145
Glenn was thorough in his inspection and clearly explained everything he was doing and took extra time to help me with another item I had a question about outside of the original service I called for.

Licensing

State Contractor License Requirements

All statements concerning insurance, licenses, and bonds are informational only, and are self-reported. Since insurance, licenses and bonds can expire and can be cancelled, homeowners should always check such information for themselves. To find more licensing information for your state, visit our Find Licensing Requirements page.

*Contact business to see additional licenses.

FAQ

Onken Mechanical Service, LLC is currently rated 4.9 overall out of 5.

Monday: Open All Day Tuesday: Open All Day Wednesday: Open All Day Thursday: Open All Day Friday: Open All Day Saturday: Open All Day Sunday: Open All Day

Onken Mechanical Service, LLC accepts the following forms of payment: CreditCard

Yes, Onken Mechanical Service, LLC offers free project estimates.

No, Onken Mechanical Service, LLC does not offer eco-friendly accreditations.

No, Onken Mechanical Service, LLC does not offer emergency services.

No, Onken Mechanical Service, LLC does not offer warranties.