Home
Skip Navigation Links


Power & Process
Division


 







Main Office
957 Lawson Street
City of IndustryCA 91748
Tel: (909) 869-7975

Sales Fax: (626) 965-3541

Acct Fax: (626) 965-3601

Map and Driving Directions
 
 
Mark Hartman - Principal, President & Sales Manager

BSME FROM UNIVERSITY OF NEBRASKA IN 1979. Mark worked with a mechanical contractor in Nebraska while in college. For two years following college, he worked as an Estimator and Project Manager. He then became a Sales Engineer for a representative, handling a broad range of HVAC products. This included custom penthouse and air handling equipment. In 1983, he became a partner in a representative firm in Oklahoma. Mark joined Air Treatment Corporation in 1986. He became Sales Manager in 1996. In 2001, Mark became the President of Air Treatment Corporation.

The employees of Air Treatment Corporation are committed to a company goal of providing “Engineering Excellence and Unsurpassed Customer Service.”

Roc Burrell - Vice President, Sales Engineer

BSME FROM SAN JOSE STATE UNIVERSITY & EMBA FROM CHAPMAN UNIVERSITY. Roc earned his BSME before joining the Trane Company as a Sales Engineer. He worked for 19 years as a York sales manager in San Diego, Phoenix and Los Angeles. He joined Air Treatment Corporation in 1987. After 20 years of service Roc retired in 2007.
Deborah Hudson - Chief Financial Officer / Operations Manager

Debbie attended Cal Poly Pomona and studied Finance, Insurance and Law. She is in charge of the finances and accounting department for the company. Debbie oversees the company operations and supervises the administrative staff. She has been an owner of Air Treatment Corp. since 1983.
Greg Blackfelner - Vice President, Sales Engineer

BS DEGREE IN CHEMICAL ENGINEERING FROM IOWA STATE. Greg joined the Trane Company, where he completed the Graduate Engineering Program in La Crosse, Wisconsin. He then joined the Trane office in Omaha. During his eight years there, he was named one of the Top Ten for Trane in 1982. He then moved to Trane's Sacramento office, where he was a top sales engineer for 5 years. Greg joined Air Treatment Corporation in 1988.
Samer Abu-Wishah - Sales Engineer

BSME CLEVELAND STATE UNIVERSITY, 1996. Samer worked with an international HVAC manufacturer following his graduation for seven years. Samer started in production departments for a year and later moved onto design. In the summer of 1998, Samer was sent to head After Sales and Maintenance to improve support both locally and internationally. Two years later, Samer was transferred to manage Sales for the US market where he spent two years before he joined Air Treatment Corporation in October of 2002.
Rob Blumenshine - Sales Engineer

Rob has been working in the HVAC industry for over 30-years. He spent his first 15 years performing service repairs and supervising various commercial and industrial system retrofits. He then moved to the sales and management side on the industry. He has spent the last 4 years with Air Treatment as a Sales Engineer working with our Aftermarket Division which specializes in cooling tower repairs and commercial/industrial water system retrofits.
Jerry Conklin - Sales Engineer

BSME FROM CALIFORNIA STATE UNIVERSITY, NORTHRIDGE. Jerry has over 10 years of experience in the HVAC marketplace. He has worked as a Regional Manager for a filtration equipment manufacturer, where he designed and supported industrial and commercial fluid filtration application. For the past 9 years he has worked in Los Angeles as a Sales Engineer supporting local Mechanical Engineers & Contractors by representing a wide range of HVAC products. Jerry's expertise includes the design and layout of cooling towers, fluid coolers, and other central plant related equipment. Jerry joined Air Treatment in 2001.
Russ Havens - Sales Engineer

BSME FROM CAL POLY, SAN LUIS OBISPO. After graduating, Russ worked as a Service/Sales Engineer for an oilfield service company where he was involved in the setup and operation of industrial fluid coolers, pumping systems, and VFDs. Russ joined Air Treatment in 2003 as an Inside Sales Assistant to Mark Hartman and moved to Outside Sales Engineer position in 2006.
Scott McCarthy - Sales Engineer

Scott McCarthy joined Air Treatment in 2002, bringing eight years of capital medical sales experience to the company. Previously, Scott worked extensively with hospital administration and management, providing the equipment necessary to create world-class medical facilities. Air Treatment has asked Scott to leverage his sales expertise to better serve the company's varied customers. Scott is committed to creating efficient facility systems through the strategic Air Treatment solutions.
Brian McCutcheon - Sales Engineer

Brian received a BSME from North Carolina State University. After college he spent approximately 6 years working for two of the largest semiconductor manufacturers as a Facilities Project Engineer. During that time he was involved in design, project management, sustaining, and procurement for new greenfield semiconductor factories as well as project retrofits. He then spent two years as a Regional Sales Manager for a leading supplier of cleanroom equipment for pharmaceutical, semiconductor and nanotechnology industries. Brian relocated from San Francisco to Los Angeles in the fall of 2003 to join Air Treatment.
Michael Mercer - Sales Engineer

BS IN MECHANICAL ENGINEERING FROM UNIVERSITY OF ARIZONA in TUCSON, 1971. Upon graduation Mike was employed by York Div. Borg-Warner (now York International). He spent 6 months at the corporate office in York, PA and then spent 19 more years in Southern California where he served as Service Manager, Service Sales Engineer, and later Executive Sales Engineer for Engineered Machinery.

Mike then spent 3 years as Sales Manager for a mechanical contractor and Account Executive for Johnson Controls. Since 1994, Mike has been a Sales Engineer for an HVAC Manufacturer’s Representative for products including Baltimore Aircoil Company, Ceramic Cooling Tower Co., Alfa Laval Thermal, and Hitachi VFDs.

Mike is an active member of ASHRAE, has served as Chapter President of the Orange Empire Chapter in 1996-97, and is also a member of the Tri County Chapter. He joined Air Treatment in 2000.

Fred Pedersen - Sales Engineer

BSME FROM UNIVERSITY OF WASHINGTON 1971. Fred spent the 12 years after college serving the Federal Government as a mechanical R&D Engineer, Facilities and Maintenance Engineer, Contract Manager and Project Manager. He began his HVAC sales and marketing career with Carrier Corporation. He stayed with Carrier, in systems design, for five years. For the next seven years, he was a Sales Engineer at Engineered Comfort Systems. Fred joined Air Treatment Corporation in 1996.
Dan Rohrbach - Sales Engineer

Dan has worked in the Los Angeles area for 10 years as a BAC aftermarket Sales Engineer, troubleshooting and designing tower systems for the end users. Dan joined Air Treatment in 2000.
Vicki Rolofson - Sales Engineer

Vicki learned the air conditioning business at Hess, Greiner & Polland, where she worked for six years as an Operations Manager. She joined Air Treatment Corporation in 1988 as an Order Administrator, and then progressed to the position of Outside Sales Engineer. Through this exposure, she gained experience with various HVAC products, including variable speed drives, fan coil units, humidifiers and replacement coils. Her attention to detail and customer service has made her a valuable asset to all of her customers. She has been an associate member of ASHRAE since 1991.
Robert Shafer - Sales Engineer

AS DEGREE IN AIR CONDITIONING AND REFRIGERATION FROM CYPRESS COLLEGE. Robert spent several years in the HVAC industry, servicing and operating large and small tonnage equipment, including central plant systems. He then returned to Cal State Los Angeles and earned his BS degree in air conditioning and refrigeration technology. After graduation, he worked for Engineered Comfort Systems for a year as an Inside Sales Engineer. Robert joined Air Treatment Corporation in 1993.
Jim Thomas - Sales Engineer

Jim attended the University of Riverside and possesses several California contractors’ licenses. He spent ten years as a Union Sheet metal worker. He then owned a contracting business and worked for seventeen years as a Mechanical and Prime Contractor in California, specializing in military and public works projects. Jim has also been involved in various design and build jobs. He has completed construction estimating and HVAC design courses and is a member of ASHRAE. Jim joined Air Treatment Corporation in 1996.
Michael Hamaker - Sales Engineer

BSME FROM CAL POLY SAN LUIS OBISPO, 2007. Michael joined Air Treatment in the fall of 2007. Supported by the integrity and values of Air Treatment Corporation, as well as many of the premier HVAC manufacturers in the industry, Michael enjoys the ability to always place customer service as first priority. Michael strives for every project to be sustainable, profitable and enjoyable for all parties. Some of Michael's interests include energy, acoustics and the sustainable use of resources.
Dan Reeves - Sales Engineer

BSME FROM CALIFORNIA POLYTECHNIC STATE UNIVERSITY, 2007. After graduating Cal Poly, Dan joined Air Treatment Corporation. Dan has had fair exposure to the HVAC industry through school but has really extended his knowledge base by completing extensive training programs with various manufacturers represented by Air Treatment. Dan plans to be a valuable contributor to the company's success, while building strong business relationships in the process.
Fabio Camargo - Inside Sales Engineer

BSME FROM CAL POLY POMONA, 2007. After achieving a degree in Technology in Automotive Mechanics in Bogotá, Colombia, Fabio moved to the United States to graduate as a Mechanical Engineer in 2007. While attending Cal Poly Pomona, he worked as a Sales Engineer Intern at a water treatment company. Upon graduation, Fabio joined Air Treatment Corporation as an Inside Sales Engineer in 2008, working his way to become an Outside Sales Engineer. Fabio’s passion for sales, his mechanical engineering background, and his trilingual skills make him a perfect fit for the sales engineering position at Air Treatment Corporation.
Carol DeVillier - Inside Sales Engineer

Carol has seventeen years experience working in the HVAC industry. She spent the majority of this time as a Design Engineer in a mechanical engineering firm that specialized in hospital, central plant and educational projects. Her range of expertise includes engineering, design and project management. She assists customers in the design, engineering and selection of HVAC equipment, also providing quotations and processing orders. She functions as an Inside Sales Engineer for Scott McCarthy. Carol joined Air Treatment Corporation in 1997.
Charlie Gilliland - Inside Technical Support

UNIVERSITY OF RELANDS, 1974. Charlie has worked in the HVAC industry for twenty-five years. Twenty-two of those years were spent at Wright's Air Conditioning in Colton and the other three at Heating and Cooling Supply. Charlie brings with him experience in outside sales, estimating, design and engineering, Title 24 Calculations, purchasing and project management. Charlie functions as Jim Thomas' sales assistant. He joined Air Treatment in 2001.
Bob Martin - Service Manager, Mustang Mechanical

Bob has over forty years of service experience in the air conditioning industry. He started as an atmosphere control technician on board several US Navy nuclear submarines. Since then he has served as a Regional Service Manager in the Commercial/Industrial Air Conditioning Division of Westinghouse Electric Corp, a branch manager in Carriers’ Commercial Building Group and owned and operated two independent contracting companies. He is certified to do start up and warranty work by most of the major manufacturers we represent.
Geoffrey Smith - Manager, Cooling Tower Service Technicians

Geoff joined Air Treatment Corporation in 2007 with the founding of Mustang Mechanical. He brings over fifteen years of experience in the cooling tower industry, not just in the HVAC markets but Process & Power as well where he has managed both field erect and temporary cooling projects in excess of 125,000 GPM. Geoff is responsible for estimating and managing the cooling tower service division as well as Process & Power sales.
George Baserga - Parts Sales

George brings over 10 years of experience in the automotive service industry. George is a great resource for assistance with after-market parts-related requests. George joined Air Treatment in February 2007.
Susan Theunissen - Senior Parts Coordinator

Susan has worked in the HVAC industry since 1985, with the majority of those years selling parts for Baltimore Aircoil and related equipment. She looks forward to offering you assistance and superior customer service for all your equipment throughout Southern California. Susan joined our company in 2000.
Lauren Barragan - Parts Sales

B.A. in Psychology from Mount St. Mary’s College 05’emphasing in counseling. Lauren has 10 years of customer service experience, the last four years as an Operations/Payroll Manager for a leading day spa in S. California. Lauren brings her knowledge of customer service, organizational and communication skills to Air Treatment. Lauren joined Air Treatment in 2009 working in our Parts Department.
Barbara Lohman - Accounting Manager

Barbara is a graduate of California State Polytechnic University at Pomona, with a BS Degree in Business Administration. She maintains the General Ledger and oversees Accounts Payable functions. She joined Air Treatment Corp. in 1999.
Anette Reichig - Credit Manager

Annette spent ten years with Carrier Corporation’s Los Angeles credit department. When Southern California Air Conditioning Distributors bought the Carrier branch, she remained for an additional eight years. Annette joined Air Treatment Corporation in 1998.
Lori Allan - Accounts Payable

Lori joined Air Treatment in February, 2002 to handle the accounts payable department. She brings 20 years experience to the job. Prior accounts payable positions include 10 years at Alta Dena Dairy and a stint in the US Navy.
Lisa Casarez - Senior Sales Coordinator

Lisa handles order coordination for many of the Outside Sales Engineers. She processes orders once the equipment is ready to be released and handles it through delivery. As the Senior Sales Coordinator, she is responsible for providing guidance and assistance to the other coordinators. Lisa joined Air Treatment Corporation in 1988.
Peter Cervantes - Cooling Tower Service Technician


Tammy Edrosa - Sales Coordinator

Tammy handles and coordinates orders for several of the Outside Sales Engineers once the jobs are released, through the delivery. Tammy joined Air Treatment Corporation in 1998.
Connie McCaughin - Sales Coordinator

AS DEGREE FROM CHAFFEY COMMUNITY COLLEGE, 1980, WITH AN RDA AND CDA IN DENTAL ASSISTING. After graduation, Connie worked in the dental field for ten years. Four and a half years before joining Air Treatment Connie worked as an Office Manager and Executive Assistant for an Orange County Architecture firm where she was in charge of all administrative operations, including accounting, human resources, equipment maintenance, and supplies. From this experience she brings her knowledge of design build and organizational skills. Connie coordinates job orders from the time of release, through delivery and start up for our Northern California Outside Sales Engineers. She joined Air Treatment in 2001.
Margie Olivas - Sales Coordinator

Margie coordinates orders for several of the outside sales engineers once the jobs are released. Margie joined Air Treatment in 1993.
Dave Olson - Inventory Coordinator

Dave Olson was hired February, 2002 to handle ABB drives and all warehouse functions. Dave worked for Mikasa Crystal as an Assistant Warehouse Manager for 5 1/2 years. Prior to that, Dave worked for Lakeshore Learning Materials as a Warehouse Supervisor for 9 years. He has an extensive warehouse background and will be able to handle all your shipping needs.
Linda Porrett -


Peggy Green - Sales Secretary – Bid Desk

Peggy coordinates quotations, submittals and sales correspondence. She is involved in the administrative operations of the company, including the computer network, equipment maintenance and ordering supplies. Peggy joined Air Treatment Corporation in 1993.
Roberta Naranjo - Receptionist

Roberta handles incoming calls and outgoing correspondence. She handles product literature requests and O & M requirement for projects. She joined Air Treatment in 2001.