Green Sherpa

Rest assured we remain unbiased, we're are not here to sell you anything! We are an Independent Energy Auditing Company. With Green Sherpa home energy assessments in Seattle we choose not to accept referral fees from anyone, so that we may remain unbiased and provide the very best service available to you. Gregg Hartwell owned and operated a residential remodel company for over 15 years. He applies his practical knowledge of building construction along with advanced training and credentials in residential energy efficiency. Credentials LEED - Accredited Professional BPI - Certified Home Energy Analyst BPI - Envelope Professional Energy Star Homes - Verifier Resnet - HERS Rater Snell Certified Level 1 Thermographer