Beginning today, take advantage of our biggest online course discounts of the year! Ring in the new year with a renewed commitment to turning your home into a health-supporting indoor sanctuary. And remember, we only do this once a year.
Save 50% on all online courses, including our Building Biology Advocate certificate program, and our Residential Microsurge Electrical Pollution video series! Just use the coupon code happyholiday2025 at checkout.
We are also offering a 10% discount on any of our advanced-enrollment certifications and most of our online and in-person seminars. Use coupon code 10offcerts at checkout.
*Ends on December 31, 2025. Does not apply to memberships, room & board, IBE 311: Indoor Environmental Quality Tools Methodologies, or IBE 312: Advanced Electromagnetic Radiation 2026.
