Having HVAC or Plumbing issues – but not quite sure what is wrong? Stellar Techs offers a FREE Service Call With Qualifying Repair or Installation completed by Stellar Techs. Call now to get scheduled.Expires: December 31, 2023 - Act now! Limit one per household. Cannot be combined with other offers or applied to previously completed service. No cash value. Coupon must be presented at time of service.