If your home is having a single stage heating system (like a gas furnace) without any cooling role, you only demand a "heat but thermostat" to control the heating organisation. A heat-just thermostat is designed to perform the basic role of regulating room temperature past controlling the heating system (be it a unmarried stage furnace or a heat pump). Normally, a basic heat only thermostat will exist having only two switch controls – 1) an On/Off switch and ii) temperature adjustment buttons.

When put to "ON" position or "Oestrus" position (some thermostats marking 'On' as 'Heat'), the thermostat will turn ON the furnace/heating system and keep it active until the gear up temperature is accomplished. The 'aligning buttons' can exist used to increase/subtract the temperature to your desired level.

At that place will be only 2 terminals for a estrus-just thermostat, marked 'R' and 'W'. You lot only need to make two connections between your heating system and the thermostat.

Annotation 1: Some single-stage heating systems have a fan to distribute heat faster. For such systems, oestrus only thermostats with a fan switch option is bachelor. These thermostats will accept 3 terminals unremarkably, marked 'R', 'Westward' and 'K'; where 'G' terminal is to connect the fan of the furnace.

Note two: Heat only thermostats are as well known as '2 wire thermostats'. You may read our guide on two wire thermostats, which also covers 2 wire single pole thermostats for line voltage systems.

Best Heat Only Thermostats

At present let'southward run into all the popular 'heat simply thermostat' models out in that location. As mentioned in a higher place, a heat simply thermostat is basically a ii wire thermostat with 2 terminals 'R' and 'Due west', which is suitable to regulate a unmarried stage heating system (without whatsoever cooling option).

Note: To regulate a single-stage heating organisation, you can actually use any thermostat that supports unmarried stage wiring. For instance, Smart thermostats like Nest, Ecobee, and WiFi thermostats similar Honeywell RTH9585WF, Emerson Sensi – all support single stage wiring. You just demand to connect the 'R' and 'West' terminals of these thermostats and leave all other terminals non connected. Then if you lot want a technologically advanced thermostat with smart features, internet connectivity, and smartphone-based command, yous ameliorate choose one above rather than a basic oestrus only thermostat.

#1 Honeywell TH1100DV1000 Heat Just Thermostat

This is a basic estrus merely thermostat model from Honeywell, with a temperature range of forty deg F to 90 deg F to choose from. It has merely iii buttons, an Off/Heat button on the side and an up/downwards button on the front to adapt the temperature range.  This model has a foursquare-shaped, backlit LCD display, which displays temperature in an easy-to-read format. TH1100DV also provides a compressor protection feature for the heating organisation.

If you're using this model in the garage, a mode is available where temperature tin can exist ranged from 35 deg F to 90 deg F.

#ii Emerson 1E78 Heat Only Thermostat

1E78-140 is one of the best-selling non programmable heat only thermostats from Emerson. This model is uniform to exist used with unmarried stage rut just systems, single-stage rut pumps, and millivolt systems. The display is a rectangle-shaped LCD, with a backlight.

1E78 is designed in such a way equally a perfect upgrade to an quondam mechanical thermostat. The body is designed to cover whatever wall markings past a mechanical thermostat (onetime models) and in most cases, y'all don't need an actress wall plate.

#3 LuxPro PSD010B Heat But Thermostat

If yous need a third choice, PSD010B from LuxPro is a pop nonprogrammable heat simply thermostat. This model is compatible with all heat only single phase systems. If your arrangement has a fan, LuxPro has a variant of this aforementioned model named PSD010BF – which has additional fan control.

The display is rectangle-shaped, with a backlight, and information technology displays only the set up temperature. The base model PSD010B has simply iii buttons, an On/Off button and an up/down control. The model with a fan (PSD010BF) has 4 buttons, an additional push on the side to control fan operation.