1. Eligibility: This promotion is valid for residential customers within our standard service area. It does not apply to commercial properties, rental units, or multiple system inspections within the same residence. Additional travel fees may apply for locations outside our service area. 2. Offer Details: Customers who schedule an HVAC diagnostic service during the promotional period will receive a free diagnostic when they proceed with the repair. The service includes a comprehensive system inspection to identify potential issues but does not cover repairs, replacement parts, additional labor, or follow-up visits. 3. Promotion Period: This offer is valid from December 15 to January 31, 2026. Appointments must be booked and completed within this timeframe to qualify. 4. Limitations: One discounted diagnostic service per household. No substitutions, cash alternatives, or retroactive discounts will be provided. 5. Determination of Eligibility: Eligibility is subject to confirmation by Hy-Mark. Customers may be required to provide proof of residence within the service area. 6. Non-Transferable: This promotion cannot be combined with other discounts, rebates, service plans, or promotional offers unless explicitly stated. 7. Changes to Offer: Hy-Mark reserves the right to modify, extend, or cancel this promotion at any time without prior notice. 8. Contact Information: For questions or to schedule your diagnostic service, contact Hy-Mark Home Comfort at (519) 822-6656 or email: info@hy-mark.ca.

*By participating in this promotion, customers agree to these terms and conditions.