Warranty Backed Items
  1. All components and parts necessary for the operation of the heating system
  2. Built-in wall heating units (if they are the only furnace venting source of heat to the room)
  3. Circulating pump for the boiler heating system
  4. Dampers that are part of the furnace
  5. Draft hood (draft diverter)
  6. Forced air gas furnace hanging kits
  7. Forced air oil furnace nozzles
  8. Fresh air intake on high efficiency furnaces
  9. Heat pumps (including geothermal/water fireplace Source)
  10. Heat pump window unit (if it is the main source of heat to the room)
  11. Heating systems if they are the main source of
  12. Heating system for the garage only heat to the home
  13. Boiler heating systems (hot water or steam)
  14. Electric wall heaters
  15. Floor furnaces
  16. Forced air electric furnaces
  17. Forced air gas furnaces (not part of the system)
  18. Forced air oil furnaces -Solar heating systems
  19. Gas wall furnace
  20. Heat pumps
  21. Radiant heat (electric, steam, or water)
  22. Wood pellet stoves (if only source of heat)
  23. Horizontal single wall venting (unless venting is specifically Stated as not covered on the contract)
  24. Pressure reducing valve for a boiler system
  25. Thermostat
Possible Uncovered Warranty Items
  1. Maintenance or Servicing of Equipment
  2. Batteries for a set back thermostat
  3. Booster fans
  4. Chimneys or chimney liners
  5. Clocks
  6. Dampers installed in the venting, chimney or for an energy management system
  7. Electronic air cleaners
  8. Oil filters
  9. Fireplaces,
  10. fireplace inserts, or key valve for the
  11. Flue or stack
  12. Grills
  13. Heat lamps
  14. Humidifiers
  15. Baseboard heaters
  16. LP gas tanks
  17. Mismatched system
  18. Oil storage tanks
  19. Permits
  20. PVC vent piping on high efficient gas furnaces
  21. Timers (energy management)
  22. Upgrades and code violations
*NOT all warranty coverage & non-coverage are the same* 
See your individual policy!