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Thermostats

Nest Thermostat Not Cooling or Heating: Step-by-Step Fixes

November 5, 2026October 4, 2026 by Dave Harlan
Homeowner with a phone looking puzzled at a round smart thermostat

Nest thermostat not cooling or heating? Check modes, Eco and schedules, the Delayed message, power and wiring, and find out if the problem is the thermostat or the HVAC system.

Categories Thermostats

Ecobee Aux Heat Running Too Much: Settings That Fix It

November 9, 2026October 4, 2026 by Dave Harlan
Homeowner checking energy use on a phone in a kitchen with a smart thermostat on the wall

Ecobee aux heat running too much? Adjust these threshold settings, avoid big setbacks and check your heat pump to cut expensive backup heat.

Categories Thermostats

How to Install a Smart Thermostat Without a C Wire

November 9, 2026October 4, 2026 by Dave Harlan
Homeowner installing a round smart thermostat on a hallway wall

No C wire? Here are 4 ways to power a smart thermostat: a spare wire, a C-wire adapter, a compatible thermostat or a new cable, plus signs you need one.

Categories Thermostats

Thermostat Wiring Colors Explained: R, W, Y, G, C and O/B

October 21, 2026October 4, 2026 by Dave Harlan
Thermostat wall plate with red, white, yellow, green and blue wires

What do thermostat wire colors mean? See a chart of R, C, W, Y, G and O/B terminals, typical wiring by system, and common mistakes to avoid.

Categories Thermostats

Thermostat Blank Screen: 6 Fixes That Work

November 12, 2026October 4, 2026 by Dave Harlan
Wall thermostat with a blank screen removed from its base with batteries nearby

Thermostat screen blank? Check batteries, the breaker and furnace door switch, the condensate float switch, the board fuse and the C wire with these 6 fixes.

Categories Thermostats

Where Should a Thermostat Be Placed? 5 Rules Installers Follow

October 4, 2026 by Dave Harlan
Digital thermostat mounted on an interior hallway wall at eye level

The best place for a thermostat is a central interior wall about 5 feet up, away from sun, vents and drafts. Here are the 5 rules installers follow.

Categories Thermostats
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