Condensing furnace
Definition to come.
Where it comes up
- Gas furnaces
How a gas furnace heats, what AFUE means and the signs worth a closer look
- How gas appliances burn and vent
Combustion air, flues, vent categories and condensing furnaces
- Efficiency ratings
What AFUE, SEER2, EER2 and HSPF2 mean and how to read them
- What affects the cost
Size, efficiency, ducts, permits and refrigerant: what moves the cost of HVAC work