Blank screen
Lost power or dead batteries.
Emergency & Repair in Grand Rapids, MI
Thermostat repair and smart thermostat installs in Grand Rapids
A thermostat that goes blank, reads the wrong temperature or will not call for heat can look like a furnace failure. We find which it is and set up a thermostat that suits your equipment.
The short answer
Thermostat repair in Grand Rapids starts by testing whether the thermostat is sending a call and the equipment is receiving it. Blank screens, heat that never comes on and temperatures that read wrong are usually wiring, power, placement or configuration problems. We fix the wiring, move or replace the thermostat as needed, and configure it for your furnace, heat pump or boiler.
What you might notice
Signs your thermostat needs attention
Heat never starts
No call reaching the furnace.
Short cycling
Poor placement or wrong configuration.
Reading off by degrees
Sun, drafts or a nearby heat source.
Wi-Fi keeps dropping
Often a power problem, not the network.
Small device, big effect
When the thermostat is the problem
Plenty of no-heat calls end at the thermostat: dead batteries, a tripped furnace switch that cut its power, a loose wire, or a smart thermostat installed without the power it needs. Other times the thermostat is fine and the furnace is not, which is why we test both.
If the furnace does not respond to a good call, see furnace repair work. Homes with a heat pump and gas furnace need a thermostat set up for dual-fuel operation.
The three jobs we do
Smart thermostat installation
Smart thermostats need steady power, which most older thermostat wiring does not provide. We confirm whether a common wire is available at the thermostat and the furnace, run one or fit an adapter where needed, and configure the thermostat for your equipment type, including heat pumps, two-stage furnaces, humidifiers and dual-fuel systems. A smart thermostat set up for the wrong equipment type is one of the most common causes of short cycling and backup heat running when it should not, so configuration is as important as mounting it.
Wiring and C-wire problems
A thermostat that reboots, goes blank or drops its Wi-Fi is often starved for power, and a loose or corroded connection at either end can do the same. We trace the thermostat cable from the wall to the furnace control board, check each terminal, and test voltage under load. Old cables sometimes have a spare conductor that can serve as a common wire. When they do not, we run a new cable or use a manufacturer adapter rather than leaving the thermostat to steal power.
Thermostat reading wrong
A thermostat that reads several degrees off usually has a placement problem rather than a broken sensor: sun through a window, a nearby lamp, a supply register blowing on it, an exterior wall behind it or a draft through the wall cavity from the basement. We check the reading against a calibrated thermometer, seal the wall opening behind the thermostat, and move it to an interior wall away from heat sources when needed. Smart thermostats can also use remote room sensors to average temperatures.
From the call to a working system
How a thermostat call runs
Test the call
Thermostat output and furnace response checked.
Check power and wiring
Voltage, terminals and cable tested.
Fix or replace
Wiring repaired or thermostat replaced as needed.
Configure
Equipment type, stages and accessories set.
Run the system
Heating and cooling cycled from the new setup.
Local conditions
Winter drafts and thermostat walls
In older Grand Rapids houses the thermostat cable often runs up from the basement through an open wall cavity, and in January that cavity pulls cold air straight onto the back of the thermostat. The furnace then runs longer than the room needs. Sealing the hole behind the thermostat is a small fix that often solves a reading problem before anything is replaced.
Before you pick up a screwdriver
What you can check before calling
A few checks are safe for anyone. Wiring and configuration are ours.
| Safe for a homeowner | Leave it to a technician | |
|---|---|---|
| Blank screen | Replace batteries; check the furnace switch | Testing wiring and power |
| No heat | Confirm mode is heat and setpoint is above room temp | Testing the call at the furnace |
| Wrong reading | Note whether sun or a lamp hits it | Relocating and sealing the wall |
| New smart thermostat | Check compatibility before buying | Installing, powering and configuring it |
Brands we service and install
CarrierBryantLennoxTraneRheemGoodmanAmanaArmstrong AirAmerican StandardDaikinMitsubishi ElectricHoneywellAprilaireFujitsu
Pricing, explained
What thermostat work costs depends on
Thermostat repairs and installs are priced on the thermostat, the wiring work and the configuration involved.
Thermostat choice
Basic programmable, smart and communicating models differ.
Wiring
Running a new cable or fitting a power adapter adds time.
Equipment type
Heat pumps, dual fuel and staging need more setup.
Relocation
Moving a thermostat to a better wall adds wiring work.
Accessories
Remote sensors and humidity control add cost.
Questions people ask us
Thermostat questions
Dead batteries, a tripped furnace switch or a lost common wire.
Most, if power and configuration are right.
A common wire that supplies continuous power to the thermostat.
Usually placement: sun, drafts or a nearby heat source.
Yes, if it suits your equipment.
They need thermostats configured for heat pump and backup heat.
Yes, through placement or wrong configuration.
We answer 24/7; no-heat calls are scheduled first.
From our guides: Read: furnace not working
More emergency & repair work
Other emergency and repair work
Thermostat blank or ignoring you?
Call any hour and we will find out whether it is the thermostat or the furnace.