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877.ACS.0009 or 719.422.8146


ACS specializes in all aspects of the heating, ventilating, air conditioning and refrigeration fields. With services spanning commercial, industrial and residential customers, no job is too big or small. Leave the rest and call the best! ACS is sure to deliver.

More About Us

With numerous licenses and certifications we pride ourselves on delivering a top quality product that's sure to please our customers for years to come. All employees are trained, licensed, drug tested and insured to give our customers peace of mind.


Dave Fabec

Started in 1998 installing and programming DDC environmental control systems. Joining a nationally recognized HVAC Apprenticeship program with Denver Pipe Fitters Local #208 in 2001. During his apprenticeship he received numerous awards including Apprentice of the Year. Work experience includes built-up split systems, chillers, food storage, high and low pressure steam systems, condenser loops, humidification systems, DDC controls, pnuematic controls and building energy management.

Refrigeration Journeyman License # 2108514
H & V Class A Supervisor License #1060840
Steam & Hot Water Supervisor License #000227
New Mexico MM03 License #386511
New Mexico MM04 License #387415


Lott Passarelli

Lott has been in the HVAC industry for over 20 years. During that time, he has done work in all aspects of HVAC installation including residential, commercial, and industrial projects, new construction, as well as, custom rebuilds. His personal resume includes HVAC systems installed in buildings and compelexes such as, The Arrabelle Square, (Vail, Colorado), Atmel Corporation (Colorado Springs), The Sky Ute Casino ( Ignacio, Colorado), and The New Denver International Hotel. Lott has also designed systems, installed and oversaw production of new construction projects for Aleut Global Solutions at Shriever Air Force Base.

ICC Master Mechanical N-29
P.R.B.D.Journeyman Sheet Metal
Journeyman Refrigeration Installation
Journeyman Gas Pipe Fitter
State of New Mexico - JSM
O.S.H.A. 30 Industrial and Commercial

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