Meet our Leaders

Parker Lahti

Owner and Founder of ARUS Consulting

Home Energy Score Rater, BPI Building Analyst Professional

ARUS was founded by Parker Lahti in 2017. With over a decade of experience in building science and energy efficiency advising, 5200+ assessments under his belt, and 30 full home renovations completed under his supervision, Parker founded ARUS to create a new model for residential energy assessment firms. ARUS is committed to the communities we serve and resident education. He still gets his boots muddy in the field--primarily with pilot services and assessment development--and he supervises both the administrative and field-advising teams. The great success and growth of ARUS has come mostly from word of mouth and relationships created in past projects.

Chance Bertolami

BPI Building Analyst Professional,

Home Energy Score Rater, Radon Mitigation Specialist, Radon Measurement Professional,

Program and Field Operations Manager

B.S. In Urban Planning

Chance began his journey with ARUS in November of 2022. He is originally from South Florida, moved to Colorado for this opportunity to work with ARUS. Holding a Bachelor's Degree in Urban Planning from Florida Atlantic University, he has also obtained BPI certifications and focuses on Efficiency Works Assessments. In his spare time Chance enjoys skiing and hiking at high altitudes with his wife Chloe. His passion lies in aiding people in transforming their homes into the most efficient and environmentally friendly spaces possible.

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