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Meet Our Team

Donohue Commercial Service
Our Team - Steve Yeagle

Steve Yeagle

President & Treasurer

Steve graduated from Oklahoma State University in 1987 with a Bachelor of Science degree in Business Management.  He worked for CPI as Director of Operation / Vice President – Sale...

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Lane graduated from Oklahoma State University of Technical Training with an Associate degree in HVAC and began working at Donohue Service Company in 1987 as a Service Technician. H...

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Donohue Commercial Service
Our Team - Jon Heaps

Jon Heaps

Senior Account Manager

Jon is our senior HVAC/R Maintenance Professional with over 30 years of experience. He is capable of designing preventative maintenance programs that are customized to meet individ...

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Donohue Commercial Service
Our Team - Darryl Adams

Darryl Adams

Project Manager / Sales

No info.

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United Mechanical Service
United Mechanical Construction
Donohue Commercial Service
Our Team - Brandon Mack

Brandon Mack

Controller

A graduate of Southwestern Oklahoma State University with a degree in finance, Brandon Mack is the Controller at Unite...

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Donohue Commercial Service
Our Team - Chris Clark

Chris Clark

Maintenance Sales

Joined Donohue Commercial Service in 2023, prior to that he served in maintenance sales for United Mechanical Service for 7 years. Chris has over 25 years experience in customer...

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United Mechanical Service
Donohue Commercial Service
Our Team - Melissa Tash

Melissa Tash

Senior Staff Accountant

Melissa Tash has been a Senior Staff Accountant at United Mechanical Service for the past year. A graduate of Husson University in Bangor, Maine, she brought 20 years of experie...

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United Mechanical Service
Donohue Commercial Service
Our Team - Carroll Harris

Caroll Harris

Staff Accountant

Staff accountant Caroll Harris specialized in psychology, and she is a member of OPA, APA, and PsyChi. Caroll has worked at United Mechanical Service for 18 years, where she stays ...

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Donohue Commercial Service
Our Team - Sandy Wheat

Sandy Wheat

Dispatcher

No info.

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Donohue Commercial Service
Our Team - Heather Bussell

Heather Bussell

Dispatcher

No info.

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United Mechanical Service
United Mechanical Construction
Donohue Commercial Service
Our Team - Ana Hernandez

Ana Hernandez

Human Resources Manager

Ana Hernandez is the newest member of United Mechanical, serving as our Human Resources Manager. She obtained her Associate’s degree in Healthcare Administration from OSU-OKC an...

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