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Replacement Heater Unit for Little Giant 9300 Incubator- Still Air
$15.99
Replacement heater unit for Little Giant 9300 incubator. Still air- No fan.
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IncuStat™ Advanced
$104.99
The IncuStatTM lets you add a sophisticated control module to your cabinet (or larger-style) egg incubator. This is designed to control the temperature, air circulation, and automatic turner motors in your incubator. Key features- Proportional thermostat - minimizes temperature swings (see details below)- Comes pre-set to 99.5 degrees F (easily adjustable, if desired)- Electronically controlled - Digital display- Controls the heater, fan and egg turner motors (it is not required to use this module to control all accessories, if you desire not to)- Hatch timer- Thermostat is calibration enabled- 110/120v power input- Remote sensor for accurate temperature reading- Easily mounts into your incubator (see video below)- Maximum heater wattage: 300 watts (see note below if you need more power) NOTE: if your incubator needs more power than 300 watts, you have the option of using a heater that is always on in order to bump up the entire wattage inside the incubator. For example, if you think you will need about 350 watts for your incubator, you can put a 60 watt light bulb inside the incubator that is always on. Then when the heater that you are regulating with the thermostat is on, you will have enough power in your incubator. Feel free to contact us if you would like further clarifications about this option. See this video to see how easy it is to install the Incubator Control Module: What is the difference between a proportional thermostat and an on/off thermostat? An off/off style thermostat turns the heater on full power when the temperature gets too low. Then it turns it completely off when the temperature gets too high. This style creates a wider swing in temperature because the temperature has to get too high or low before the thermostat responds. The proportional style thermostat adjusts the power up and down as the temperature starts getting close to the set-point (your target temperature). It will reduce the amount of power going to the heater as the temperature gets close to the set-point. Then it will increase the power as the temperature starts falling away from the set-point. This allows the temperature swing to be much smaller than the on/off style thermostat. When incubating eggs, accuracy counts! That is why a proportional style thermostat is preferred. Product Instructions: IncuStat™ Advanced
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225 watt coil heater & insulator kit: cabinet egg incubator 110V heating element
$30.99
This listing is for brand new 250 watt replacement heater coil and insulator kit for cabinet style incubators. 250 watts of power Voltage requirement: 110/120VAC Click here to see the 220V International Version. Replaces the standard 250 watt coil heater kit in cabinet style incubators
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Replacement Wafer (Wafer ONLY) for Hova-Bator Egg Incubators 3007
$11.99
Replacement wafer for Hova-Bator and GQF egg incubators and brooders. Wafer ONLY. This is not a complete thermostat.
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Egg Incubation Countdown/up Timer
$13.99
In incubation there is a saying that “nature doesn’t lie”, which means the best way to tell if your incubator is operating correctly is by the results of the hatch. For example, if your eggs hatch early the temperature was too warm or if they are late it was too cool. With the IncubatorWarehouse.com’s Poultry Timer (p-timer) keeping track of the incubation period is simple and easy.  Simply set the timer when you set the eggs to the appropriate number of days and the p-timer will keep track of the incubation time for you.  The p-timer counts down the days and hours during incubation and once the timer reaches zero the display will begin to flash and the timer will count up.  When the eggs hatch you will know exactly if they are on time, early, or late and you will be able to make adjustments for the next time you incubate. The p-timer has a space saving compact design with an easy to read LCD display. The adhesive backing makes the p-timer easy to mount anywhere so it doesn’t get lost. The p-timer is covered by the IncubatorWarehouse.com’s one year hassle-free guarantee so you can purchase with confidence.   
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100 watt tube heater | 110V heating element for egg incubators NEW
$13.99
Brand new 100 watt heater. Great for mid-sized incubators. 100 watts of power Voltage requirement: 110/120VAC Standard pink female connectors will fit on the electrical ends of this heater (see video) Would you like to see how easy it is to wire this? See this short video:
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Plug 'n Play Hygrostat for humidity control in Egg Incubator, Reptile Terrarium
$62.99
The Plug ‘n Play Hygrostat is a digital electronic hygrostat with remote sensor designed specifically to control the humidity level in incubators and terrariums. It's great for both tabletop and cabinet incubators and large and small terrariums.  It comes pre-wired and ready to use. You can use watering device up to 500 Watts and you can use up to three devices. Simply plug in your pump, water valve, humidifier or any other watering device into the 3-outlet plug and you’re ready to go. The humidity set point can be adjusted in 1% increments. Setting it is very simple to do.  This unit comes with a 40 inch remote sensor that can be placed inside your incubator.  It also has a remote temperature sensor so it can compensate humidity measurements for changes in temperature.  Please note: this device does not display the temperature.   Set point can be adjusted to any humidity level between 1% - 99% Runs on 110V AC and will power 110V AC devices.  If you have a DC watering device, you'll need a power converter to change AC to DC (like a laptop power supply).   Calibration enabled. This means that you can calibrate the hygrostat, if required. For example, if you have a hygrometer that you trust and the digital hygrostat reads a little different, you can calibrate the hygrotstat to match the trusted hygrometer (calibrate in 1% increments up to +/- 10%) You are able to change the hysteresis from 1% - 30%.  This means you are able to set the range of humidity that turns the power on and off.  For example, if you set a hysteresis of 5, the hygrostat will wait until the humidity level has dropped 5% below your set point before turning on the power.  It will turn off the power as soon as the level hits the set point This device can also be set to control the power for a dehumidifying device as well, if desired (only one at a time, it can't do both at a time).   You will notice in the pictures that there are two different sensor probes.  The larger one senses the moisture level.  The smaller one measures temperature so that the humidity sensor can compensate for changes in temperature. As noted above, this unit does not display temperature.   What devices can I use with this device to get water into my container?   Great question!  There are three main options to consider. 1. Water valve - use a small water valve attached to a reservoir of water that is kept above your container.  When the valve is powered on, the valve opens and water flows into your chamber. The water can fill a water reservoir in your container of flow onto a wicking pad.  2. Small water pump - A mini pump will bring water from a container kept outside the container.  This is set up similar to the water valve but the water container does not have to be kept above your container.  3. Humidifier - you can get a mini unit that could fit insider your container or a larger one that would be kept outside the container and then use flexible pipe or hose to pump the moist air into your container.  With egg incubators, be sure to find one that have low enough air flow that it will not cool off the incubator too much.   Note: It is normal for the hygrostat to turn the watering device off and still have the humidity level increase a little bit. This happens because as the power to the watering device turns off, the water that has already entered the container still needs to warm up and stabilize. The same is true when the power turns back on: the humidity may decrease a little more as the water takes time to dissipate in your container.  The amount this happens will depend on how quickly your watering device puts water (or mist) into your container.   Keep in mind that the variation in humidity levels over a short period of time is not nearly as important as the average humidity level over several days.   As always, all of our products are covered by our One-year Hassle-free Guarantee. Purchase today with no worries and experience the Plug ‘n Hygrostat for yourself. Product Instructions: Plug N' Play Hygorstat
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Cool-Lite Egg Candler for Testing Eggs during Hatch
$20.99
Candling your own eggs is one of the most exciting and rewarding experiences during the incubation process. Being able to see the different stages of development from embryo to a full grown chick moving in its shell, is both fun and educational. The easy to use Cool-Lite Egg candler provides an effective way to candle eggs. Built with a sturdy rubber grip and five foot cord this candler is made to last. Light provided by an incandescent bulb is sealed in by the soft rubber cup which makes it easy to see inside the egg to determine fertility, even with large eggs. Easy to understand full color instructions help guide those who are candling for their first time. As always, all of our products are covered by our One-year Hassle-free Guarantee. Purchase today with no worries and experience the Cool-Light egg candler for yourself. International Customers This automatic egg candler uses 110 Volt AC Power. For international customers (220/240V) please purchase the IncubatorWarehouse.com international power converter to maintain product warranty.
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Universal Pop Bottle Waterer for birds or small animals
$4.99
Universal Pop bottle Waterers work on old fashioned snap on pop bottles and they snap on 12 or 16 ounce bottles. Waterers fits through 1'' square opening in cage or pen to supply adequate water for birds or small animals. Waterer supplied with spring to hold bottle. Please note: purchase does NOT include a bottle.
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1614 - Automatic Turner for Large Eggs
$61.99
During incubation, eggs must be turned several times a day to exercise the embryo and prevent the yolk from settling to one side. This automatic egg turner ensures that eggs are regularly and evenly turned and holds up to 19 larger-sized eggs. 110 Volt AC (220 Volt available for export). Dimensions: 15'' x 15'' x 3''
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IncuStat™ Advanced for IncuKit XL
$110.99
IncuStat Advanced for IncuKit XL. This device lets you add a sophisticated control module to your cabinet (or larger-style) egg incubator. This is designed to control the temperature, air circulation and automatic turner motors in your incubator. Key features- Proportional thermostat - minimizes temperature swings (see details below)- Comes pre-set to 99.5 degrees F (easily adjustable, if desired)- Electronically controlled - Digital display- Controls the heater, fan and egg turner motors (it is not required to use this module to control all accessories, if you desire not to)- Hatch timer- Thermostat is calibration enabled- 110/120v power input - Remote sensor for accurate temperature reading- Easily mounts into your incubator (see video below)- Maximum heater wattage: 300 watts (see note below if you need more power) NOTE: if your incubator needs more power than 300 watts, you have the option of using a heater that is always on in order to bump up the entire wattage inside the incubator. For example, if you think you will need about 350 watts for your incubator, you can put a 60-watt light bulb inside the incubator that is always on. Then when the heater that you are regulating with the thermostat is on, you will have enough power in your incubator. Feel free to contact us if you would like further clarification about this option. See this video to see how easy it is to install the Incubator Control Module:   What is the difference between a proportional thermostat and an on/off thermostat? An off/off style thermostat turns the heater on full power when the temperature gets too low. Then it turns it completely off when the temperature gets too high. This style creates a wider swing in temperature because the temperature has to get too high or low before the thermostat responds. The proportional style thermostat adjusts the power up and down as the temperature starts getting close to the set-point (your target temperature). It will reduce the amount of power going to the heater as the temperature gets close to the set-point. Then it will increase the power as the temperature starts falling away from the set-point. This allows the temperature swing to be much less than the on/off style thermostat. When incubating eggs, accuracy counts! That is why a proportional-style thermostat is preferred.
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220/240V Voltage Converter Kit
$19.99
Most of our products use 110V AC power, but we sell of lots of incubators internationally, and other countries use 220/240V AC power, so we've created a converter kit. It provides everything you need to power ONE Little Giant OR HovaBator Egg Incubator Combo Kit (Incubator, Fan Kit, and Egg Turner) internationally. This power converter kit is specially designed for continuous use (most power converters will wear out under constant use). Converts 220/240V AC power to 110V AC power, UP TO 100 Watts. This item, along with the majority of our products, is covered by our Two Year IncuCare Warranty. Purchase today with no worries and experience the 220/240V Voltage Converter Kit for yourself.
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Plug 'n Play Digital Electronic Thermostat with Remote Sensor
$66.99
The Plug ‘n Play is a digital electronic thermostat with remote sensor designed specifically for incubators. It's great for both tabletop and cabinet incubators. It comes pre-wired and ready to use. You can use any heating element up to 225 Watts. Simply plug in your heater, heat mat, or light bulb to the 3 outlet plug outlet and you’re ready to go. The temperature can be adjusted in 0.1 degree increments. Just press the up or down arrow to set it. The screen has a flame icon that turns on when the heater is operating. This unit comes with a 24 inch remote sensor that can be placed inside your incubator. The white thermostat may be mounted on the outside of the incubator. Comes preset to 99.5 degrees F (37.5 in Celsius mode). Set point can be adjusted to any temperature between 41-113 degrees F If the temperature goes over 99.9, it reads: 00.1, 00.2, 00.3, etc. The digital readout displays temperature to the tenth of a degree (98.7, 99.4) The temperature switching differential is 0.2 degrees F. This means that if the temperature is set to 99.5 then the thermostat will turn the heat on when the thermostat sensor reads below 99.3 and turn off when the sensor reads above 99.7 110V AC Calibration enabled. This means that you can calibrate the thermostat if required. For example, if you have a thermometer that you trust and the digital thermostat reads a little different, you can calibrate the thermostat to match the trusted thermometer (calibrate in 0.1 degree increments up to +/- 5 degrees) Key lock feature allows you to set the temperature and lock the keys so it cannot be changed without unlocking the keys (keys are locked by pressing both up and down buttons for 5 seconds) Note: It is normal for the thermostat to turn the heater off and still have the air temperature increase a little bit. This happens because as the power to the heater turns off, the heater is still hot and will heat the air around it. The same is true when the heater turns back on: the temperature may decrease a little more as the heater gets back up to temperature. The amount this happens will depend on the amount of heat your heating element holds and the amount of circulation in your incubator. Keep in mind that the air temperature may vary without a negative impact to the eggs if the variation is rapid enough to not allow the eggs to heat or cool more than it should. As long as the up and down cycle is relatively small, less than a few minutes, and the average air temperature is at your target temperature, the temperature inside your egg (which is what really matters) will be just fine! This is true with any incubator and egg configuration. As always, all of our products are covered by our 2 Year IncuCare Warranty. Purchase today with no worries and experience the Plug ‘n Play Digital Electronic Thermostat for yourself.
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AutoCoop Door Controller with timer
$82.99
AutoCoop Door Controller with timer makes it so you can set the time when your coop door will open and close. The easy to set digital timer allows you to set when your coop door will open and close down to the minute. The AutoCoop Door Controller is also easy and simple to install. Works with safe 12v power. Power supply not included.
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3169 - 2 Fan Heater Assembly
$128.99
Aluminum wall heater with two fans for current style cabinet incubators. This is a direct replacement for any GQF 1500 series (1502, 1500, 1550) cabinet incubator. It also converts either of the two older DC fan versions to the current fan/heater model. Instructions included.
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Gentle Flow Fan for Small-Mid Size Egg Incubator 110V AC
$18.99
This fan is specially designed for small to mid size incubators.  This Gentle Flow fan is perfect for keeping a uniform temperature and not drying out eggs.  This fan is made with durable ball bearings for long life. Mounting holes on each corner make mounting in your incubator very easy. Just wire into your incubator so the fan is ALWAYS on to keep your small to mid size incubator temperature uniform. 110V AC
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Power Supply for AutoCoop Door
$10.49
Power Supply for AutoCoop Door Kits
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Power Failure Alarm - 110V
$27.99
Blue light indicates when electricity is on. When power outage occurs the alarm will sound after ten seconds and the red light will come on. The alarm will continue to sound until reset is pressed or power returns. If you have chicks or birds that need looking after when electricity goes off on a cold windy night, plug in this unit in your bedroom to wake you when the electricity goes off.   
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Car Power Adapter for IncuKit Mini & IncuView
$17.99
The car power adapter allows you to keep your incubator running while on the road! This can be especially handy if you are transporting eggs or queen bee cells to their new location. Works for IncuView & IncuKit Mini (DOES NOT WORK WITH GENESIS 1588)). Requires up to 5 Amps at 12V DC
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12 volt Car Power Plug for Genesis 1588 Incubator
$22.99
This is a specialized plug for the GQF 1588 Genesis incubator.  It has been designed to work with the wiring in this incubator, which is different than the normal 12V car plugs on the market. This allows you to plug your incubator into the 12V plug in your car and operate your incubator as normal.  Please note: if your incubator has an egg turner, it will not be powered by this plug.   
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3031 - Auto Humidity Pan
$60.99
Cabinet model humidity pan for cabinet model incubators includes valve and hose. Does not include nipple or water tank.
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AutoCoop Linear Actuator
$55.99
AutoCoop Linear Actuator
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Replacement Sensor (March 2020 and Earlier)
$13.99
Replacement Sensor for HumidiKit
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Brinsea OvaView High-Intensity Egg Candling Lamp
$60.99
The OvaView High Intensity has a higher light output from a higher spec LED than the standard OvaView. The OvaView High Intensity is similar to the OvaView but with a much higher light output from a higher spec LED.  The greater power makes inspection of darker and mottled egg shells easier.  Supplied with both the normal flexible black ring to seal against the egg shell plus a smaller version for smaller eggs. Like its brother it is designed to be either hand-held or can be left on a work surface. Battery powered for convenience (4 AA batteries required but NOT included) it uses high output high efficiency LED illumination – so no bulbs to replace and no concerns about overheating the eggs (even very small eggs) during inspection. Now protected by Biomaster antimicrobial additive: proven to reduce bacterial growth by 99.99% and 100% safe for eggs, chicks and humans. Protects hatches from microbial transfer by cross contamination helping to reduce unexplained hatching failures.
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Replacement Bottom for IncuView 2 Incubator
$50.99
Replacement Bottom for IncuView Incubator
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3008 - Adjusting Screw & Nut
$5.99
Adjusting screw and wing nut for GQF wafer thermostats.
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Ova-Easy/TLC Advance Humidity Pump
$175.99
Specifically designed to work seamlessly with the Ova-Easy ADVANCE cabinet egg incubators and the new TLC-40 and 50 ADVANCE parrot brooders this humidity pump includes a peristaltic pump and an external water reservoir which eliminates the chances of water in the incubator or brooder harboring bacteria. The unit stands beside the incubator or brooder and is connected to it by an electrical lead and a flexible tube for water supply. Incubation Humidity settings are controlled directly from the incubator's or brooder's intuitive digital menu and the achieved relative Humidity (RH) is continuously shown on the incubator’s or brooder's digital display. The Ova-Easy ADVANCE cabinet incubators or the new TLC ADVANCE brooders, coupled with the Humidity Pump effectively maintains the humidity level precisely at the level the user sets irrespective of changes in room humidity and so overcomes problems that can commonly lead to eggs failing to hatch – especially in the latest stages of incubation or dehydration of young birds.
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Turning Tray for IncuView 2 Incubator
$37.99
Turning Tray for IncuView Incubator
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225 watt coil heater & insulator kit: cabinet egg incubator 220V heating element
$21.69 $30.99
This listing is for brand new 250 watt replacement heater coil and insulator kit for use in cabinet style incubators. 250 watts of power Voltage requirement: 220/240V AC Click here to see the 110V North America Version. Replaces the standard 250 watt coil heater kit in cabinet style incubators
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3175 - Turner Motor Assembly
$129.99
Replacement turner motor assembly for cabinet model incubators featuring the 3258 digital command center. 110 VAC NOTE: If the incubator has a single fan and a 3258 command center, use the original galvanized brackets with the new motor.
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Humidity Management Kit for Janoel 12 MagicFly Good Mother HBlife HatchMate – Complete Humidity Management Kit
$15.99
Incubator Warehouse has solved the problem with managing humidity in this popular 9-12 egg incubator. With this complete humidity management kit you can finally have complete control over the humidity in your incubator. This kit includes the Incubator Warehouse Digital Hygrometer, EZ Water Filler, & Humidity Tray. With 3 different sized reservoirs it is simple to get your humidity level adjusted. Simply pour water in the main reservoir using the EZ water filler until it is full. If you need more humidity, just keep adding water until it spills over into the medium then large reservoirs through the integrated EZ overflow ports. The Digital Hygrometer makes it easy to see what your current humidity level is at in your incubator. Includes the 2 Year IncuCare Warranty
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Hygrostat with Cord
$74.99
Hygrostat with Cord for HumidiKit
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Humidity Tray for Janoel 12 MagicFly Good Mother HBlife HatchMate – Easy Humidity Management
$8.99
Incubator Warehouse has solved the problem with managing humidity in this popular 9-12 egg incubator. With this simple humidity tray insert you can finally have control over the humidity in your incubator. With 3 different sized reservoirs it is simple to get your humidity level adjusted. Simply pour water in the main reservoir until it is full. If you need more humidity, just keep adding and water and it will will spill over into the medium and then the large reservoir through the integrated EZ overflow ports. We also sell this water tray in a complete humidity management kit including the Incubator Warehouse Digital Hygrometer and EZ Water Filler (Not included in this listing, see other listing fore details).
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3074R - Cabinet Incubator Door with Hardware
$96.99
This is the standard door supplied with GQF cabinet incubators. Hardware included. Dimensions: 29 5/8" x 15 1/2"
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Brinsea MIni Advance Small Egg Disk - 12 Egg Capacity
$27.99
This plastic insert changes the Mini Advance capacity from its standard 7 chicken eggs to 12 smaller eggs (pheasant or quail eggs or smaller). Now protected by Biomaster antimicrobial additive: proven to reduce bacterial growth by 99.99% and 100% safe for eggs, chicks and humans. Protects hatches from microbial transfer by cross contamination helping to reduce unexplained hatching failures.
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1756 - Heater/Fan Assembly for GQF 1586 & 2365 12V
$59.99
Replacement heater/fan assembly for GQF 1586 and 2365 12 Volt Hova-Bators.
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0211 - Quail Egg Trays - Package of 1,000
$798.99
Package of 1,000. These lightweight trays are made of durable paper mache and are ideal for use in collecting and holding eggs. Each tray is 7” x 13” and holds 50 eggs. Can be double stacked for setting and storage. These trays can be used as Incubator Egg Positioners when holes are cut to permit circulation of the air.
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IncuView Replacemnt Lid (Lid only no Electronics)
$62.99
Replacement lid for the IncuView Incubator
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1780 - Genesis Hova-Bator Lid
$141.99
Complete lid for GQF 1588 incubators. Includes heater, fan assembly, and digital thermostat with LCD display. Does not include Hova-Bator bottom, liner, or power supply. Will work with previous model 1588 power supplies.
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2365 - Circulated Air Hova-Bator
$121.99
TUV approved for use in classroom and laboratory settings. 12 Volt wafer thermostat with a fan for circulating air. Two windows provide visibility for monitoring hatches and temperatures. Includes plastic bottom liner and thermometer. 12 Volt DC power supply operates on 100 to 240 Volt AC . Only U.S. plug & cord set supplied. Without an automatic turner in place, the incubator will hold 50 duck or chicken eggs or 130 quail eggs. Dimensions: 18 1/2” x 18 1/2” x 9 1/2” Weight: 8 lbs.
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110V Electronic Thermostat for Little Giant Egg Incubators with Temperature Range Switch
$26.99
This thermostat is a direct replacement for the Little Giant Egg Incubators with electronic thermostats. This thermostat fixes a major issue with the Little Giant design (making small adjustments to the set temp). The Temperature Range Switch allows you to choose between 2 temperature control ranges (Narrow & Wide). Narrow (Poultry and Bird Incubation): Approx 95-105 degrees Wide (Reptiles & Other Uses): Approx 75-115 degrees This thermostat is for 110V AC Power ONLY.  Maximum Heater Switching Capacity = 100 Watts
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Mounting clips for tubular heating elements - Set of 3
$4.99
Mounting clips for tubular heating elements - Set of 3.  For replacement or can be used in DIY egg incubator.  Heating Element not included, available as an separate item.
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Brinsea Octagon 20 ECO Autoturn cradle
$116.99
Note that this cradle is NOT compatible with the Octagon 10 or the older Octagon 20 DX models. Egg turning with all models in the Octagon incubator range is achieved by rotating the whole cabinet through 90° (45° on either side on an hourly cycle). The separate egg turner cradle keeps all moving parts outside the incubator away from moisture and dust leaving the enclosure easier to clean. It also means that there is nothing to trap or injure emerging chicks if you forget to stop the turning. The incubator lifts easily out of the egg turner cradle allowing it to stand horizontal for hatching.

When evaluating the cost of an egg incubator, it is important to consider the accessories you plan to buy. There are many egg incubator accessories that can improve the incubation process.  The most common incubator accessories are egg turners, forced air fan kits, egg candlers, incubator thermostats & incubator thermometers.  Even though you can purchase a high-quality egg incubator for around $40, customers usually find it least expensive to buy an egg incubator combo kit that includes everything they need.  

Believe it or not an egg must be turned at least 2-3 times per day to prevent the embryo from sticking to the side of the shell.  This is accomplished by turning the eggs by hand or by using an automatic egg turner.  Automatic egg turners work by rocking or rolling the eggs to keep the embryo from sticking to the shell.  A very slow RPM motor is used to automate the egg turner.  

An egg candler (sometimes called an egg tester or egg testing light) is used to illuminate an egg so you can see the developing embryo inside the egg.  When using an egg candler you will be able to see the developing veins & eventually movement of the developing bird.  We believe that the best egg candler for the money is the IncuBright Egg Candler.  See pictures and instructions for using an Egg Candler.

An incubator thermostat is the most critical component inside an egg incubator.  Finding the right thermostat can be very difficult.  There are several types of incubator thermostats: Bi-metal Incubator Thermostat (sometimes called a incubator wafer thermostat), On/Off Electronic Incubator Thermostat, & Proportional Incubator Thermostat.  The most accurate and consistent type of incubator thermostat is the Proportional Incubator Thermostat because it keeps a more constant temperature by turning the power to the heater up or down instead of turning it on and off.  Bi-Metal & Electronic on/off incubator thermostats also work well, but they require the correct amount of heater wattage to avoid excess overshooting or undershooting of the incubator thermostat set-point.