The top 10% of surgical techs earn over $68,000 per year, while entry-level and uncertified techs may earn around $27,000. Certified technologists can expect to earn more.
There are several factors a home warranty company may consider while determining if the covered HVAC system should be replaced or repaired. If repairs of the system will cost in excess of 50% of the price of a new system of similar type, they may advise the replacement of the system.
For a 1,000 square foot home, the cost of an HVAC system is  $6,000 to $12,000, including a new furnace, air conditioning unit, and ductwork. For larger homes and more complex setups, however, the price could be significantly higher.