Blower
Definition to come.
Where it comes up
- Gas furnaces
How a gas furnace heats, what AFUE means and the signs worth a closer look
- Older furnaces
Gravity and coal-era furnaces, gas conversions and how to judge a furnace's age
- Central air conditioning
The parts of a split system, what is normal and the signs of trouble
- Ductless mini-splits
Ductless cooling and heating for homes and rooms without ducts
- Your home's system as a whole
How heating, cooling, air and controls fit together in one home
- How cooling and heat pumps move heat
The refrigeration cycle, and why your outdoor unit blows warm air
- Airflow and ducts
Supply and return, static pressure, leaky ducts and when duct cleaning helps
- Sizing heating and cooling
Why size matters, load calculations and short cycling
- Before the cooling season
The AC check-up, coils and drains, the outdoor unit, mini-splits and room units
- Natural gas safety
The added smell, gas detectors, your gas pipes and yearly appliance checks
- Warning signs
Signs a system may be unsafe, and when to stop and have it checked