HVAC
Definition to come.
Where it comes up
- Older furnaces
Gravity and coal-era furnaces, gas conversions and how to judge a furnace's age
- Home ventilation
Fresh air, bathroom and kitchen fans, range hoods, and ERVs and HRVs
- Air filters and air cleaners
Furnace filters, MERV ratings, changing filters and what air cleaners can do
- Your home's system as a whole
How heating, cooling, air and controls fit together in one home
- Sizing heating and cooling
Why size matters, load calculations and short cycling
- Care all year round
Filters, humidity, exhaust fans, dryer vents, open registers and regular upkeep
- Permits and licenses
When work needs a permit and which licenses Chicago contractors hold
- Asbestos and lead
Old insulation, lead paint, and the rules for who may disturb them
- Repair or replace
Age, repairs and bills, R-22 systems, efficiency, sizing and what to ask
- What affects the cost
Size, efficiency, ducts, permits and refrigerant: what moves the cost of HVAC work