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Blower Door Tests
The 2016 energy code requires a blower door test for all new homes and additions before an occupancy permit is issued. This test is to determine how air tight the house is. This test can also be administered on an existing home. To set up a test call (231)796-8424.

CONTACT
Inquiries
For any inquiries, questions or commendations, please call: 231-796-8424 or fill out the following form.
Head Office
13440 Northland Dr
Big Rapids, MI 49307
Tel: 231-796-8424
Fax: 231-796-8274
Employment
To apply for a job with Iltis Construction Inc.
please send a cover letter with your C.V. to: iltisconstruction@gmail.com
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