Had Arctic Air come out for an estimate that another local company told me was bad and needed to be replaced, they came in and checked the inside furnace and asked if we wanted it fixed or replaced. We was under the impression it had to be replaced but Arctic Air told us all it needed was a transformer. They had our furnace up and running in about 25 minutes, replaced transformer and fixed shorted out wire. We also had them give us and estimate for replacement and found that difference is price was a substantial difference.