EQUIPMENT GUIDES
HVAC equipment guides
Read the guide for the equipment on your label, from central air conditioners and heat pumps to furnaces and ductless systems.
AC service and portable cooling
AC capacitor replacement: service and costCompare what a professional capacitor replacement quote includes, from diagnosis and the part to labor and the repair warranty.Portable air conditioner without a windowA conventional portable AC still needs to reject heat outdoors. Choose your room’s situation to see what to check before buying a unit.
Thermostat manuals and maintenance
Honeywell RTH9585WF manualOpen the official Smart Color manual, or choose the schedule, Hold or Wi-Fi task you need below.Honeywell T6 Pro Smart manualFind the official Wi-Fi model manual, or go straight to Hold, scheduling and connection instructions.Hunter 44155C manualFind the manufacturer’s manual or go straight to the clock, temperature and program controls on your Hunter 44155C.Honeywell T6 Pro manualUse the official T6 Pro programmable manual, or jump to its schedule, Hold, clock and battery instructions.Honeywell T4 Pro installation manualFind the exact T4 Pro installation document and the sections for power, wiring diagrams, installer setup and system tests.Honeywell TH5220D1003 manualOpen the FocusPRO operating manual or find the controls for temperature, fan, system mode and battery replacement.Replace Honeywell thermostat batteriesMatch the full model number first. These Honeywell thermostats use different battery sizes and different ways to reach the compartment.
AC leaks and equipment identification
Thermostats and cooling measurements
Honeywell RTH2300B manual and operating helpFind Hold, schedule, clock and battery instructions →Honeywell filter-reminder resetFind clearing steps for a supported exact model →Thermostat Auto, On and CircCompare fan behavior and model-specific controls →AC temperature splitCalculate return minus supply without a health verdict →
Air cleaning and night cooling
Buying guides
Ceiling fans
Central air conditioners
American Standard vs Carrier: Which is best in 2021?Read guide →Bryant Air Conditioner Reviews & Prices 2021Read guide →Carrier Air Conditioner Reviews & Prices 2021Read guide →Lennox Air Conditioner Reviews & Prices 2021Read guide →Rheem AC Reviews & Prices in 2021Read guide →Trane vs Lennox Air Conditioning Reviews & Prices 2022Read guide →Trane Central Air Conditioner Reviews & Prices 2021Read guide →York Air Conditioner Reviews & Prices in 2021Read guide →
Dehumidifiers
Ductless systems
Furnaces
Heat pumps
Portable air conditioners
Water heaters
Check A. O. Smith water-heater age from a supported serial or printed manufacture date