Home Climate Journal
Plain answers on heating, cooling and the air inside your home.
Dry bulb 40–110 °F (4–43 °C) · relative humidity 20–100 %
Latest
Guides
All guides (6)Sections
Heating
Heat pumps, furnaces, boilers and dual-fuel systems: how they work and what they cost to run.
Cooling
Central air, ductless mini-splits and room units, and how to size and choose them.
Air quality
Ventilation, humidity, filtration and wildfire smoke inside the home.
Water heating
Heat pump, tank and tankless water heaters compared.
Energy bills
Thermostats, insulation, ducts and the numbers behind a monthly bill.
Rebates & costs
What equipment and installation cost, and which incentives still apply.
Rules & recalls
Refrigerant rules, efficiency standards and product safety recalls.