Find your thermostat for boiler systems online here

Low-voltage boiler thermostats from standard, heat-only, two wire, to programmable, combination system, digital and wifi t'stats.

The links on this page will take you directly to boiler thermostats online.

Thermostats for hydronic hot-water and steam boiler systems online.

Thermostats For Boilers Online

Go to HouseneedsHouseneeds linkHouseneeds:Honeywell Thermostats for Heating are Low voltage, Wireless Digital Thermostats, Programmable - Non-Programmable models available for hydronic heating systems.
– https://www.houseneeds.com/heating/hydronic-heat-supplies/honeywell-thermostats-heating
Go to AprilaireAprilaire linkAprilaire:The Aprilaire Model 8444 Thermostat provides pinpoint digital accuracy and control for ultimate comfort and energy efficiency. Controls standard HVAC units.
– https://www.aprilaire.com/whole-house-products/thermostats/digital/model-8444
Go to EmersonEmerson linkEmerson:Standard Mechanical Thermostats | White-Rodgers | Mercury-free replacement for White-Rodgers and competitive models installed over the past 50 years.
– https://climate.emerson.com/en-us/shop/1/white-rodgers
Go to AC4LifeAC4Life linkAC4Life:Honeywell FocusPRO5000 | Non-Programmable Digital Thermostat | Features #1 Choice of Homeowners Precise Comfort Control (+/-1°F) Display Size Options Large, Clear Backlit Digital Display Soft-Key...
– https://www.acdirect.com/installation-suppplies/system-accessories/thermostats/honeywell-focuspro-5000-digital-non-programmable-thermostat-standard
Go to tekmartekmar linktekmar:Thermostat for hydronic heating systems | tekmar Thermostat 552
– http://www.tekmarcontrols.com/products/zoning/552
Go to HoneywellHoneywell linkHoneywell:Economy Non-Programmable Thermostats (CT3X) | Honeywell Home
– https://www.honeywellhome.com/en/products/thermostat/economy-non-programmable-thermostats
Go to GraingerGrainger linkGrainger:Hydronic Thermostats products - Grainger Industrial Supply | Shop for Hydronic Thermostats at Grainger. Log-in or register to view your pricing. Over 1.5 million maintenance, repair & operations (MRO) products. For the ones who get it done!
– https://www.grainger.com/search/hvac-and-refrigeration/hvac-controls-and-thermostats/hydronic-controls/hydronic-thermostats
Go to SupplyHouseSupplyHouse linkSupplyHouse:Honeywell TH1100DV1000 - PRO 1000 Non-Programmable, Heat Only, Vertical Thermostat | Backlit display is easy to read - Displays ambient (measured) temperature at all times -One-touch access to setpoint temperature
– https://www.supplyhouse.com/Honeywell-TH1100DV1000-PRO-1000-Non-Programmable-Heat-Only-Vertical-Thermostat
Go to Lowe'sLowe's linkLowe's:Honeywell Round Mechanical Non-Programmable Thermostat at Lowe's. The Honeywell Round mechanical thermostat has dial-style mechanical operation in a traditional circular housing. It offers time-tested, precise...
– https://www.lowes.com/pd/Honeywell-Round-Mechanical-Non-Programmable-Thermostat
Go to Chicago Controls ThermostatsChicago Controls Thermostats linkChicago Controls Thermostats:HC7445 Residential Thermostat - Landlord Thermostats
– https://www.landlordthermostats.com/product/hc7445-residential-thermostat
Go to TexwarmTexwarm linkTexwarm:Wifi thermostat, floor heating thermostat, electric heating thermostat, fan coil thermostat, touch screen thermostat, Radiant heating thermostat, underfloor heating thermostat, gas boiler thermostat | Texw@rm
– http://www.wifi-thermostats.com/Boiler-Thermostat
Go to EcobeeEcobee linkEcobee:Heat only 2-wire boiler/furnace installations for ecobee thermostats – ecobee Support | This article applies to the ecobee3, ecobee3 lite, and ecobee4. ecobee thermostats require a C (common) wire to power on. If you only have two wires at your current thermostat, there are a few ins...
– https://support.ecobee.com/hc/en-us/articles/227874667-Heat-only-2-wire-boiler-furnace-installations-for-ecobee-thermostats
Go to eComforteComfort linkeComfort:White Rodgers 1C20-101 Economy Mechanical Low Voltage Thermostat, Heat Only
– https://www.ecomfort.com/White-Rodgers
Go to The Home DepotThe Home Depot linkThe Home Depot:Emerson Mechanical Heat Only Thermostat 1C20-101-1C20-101 - The Home Depot | Control heating and cooling in your home with this Emerson Mechanical Heat Only Thermostat. Includes wall mounting plate to cover marks.
– https://www.homedepot.com/p/Emerson-Mechanical-Heat-Only-Thermostat
Go to LuxLux linkLux:T10-1141SA Mechanical Single-Stage Heat Only Thermostat | LuxProducts.com
– https://shop.luxproducts.com/collections/mechanical/products/t10-1141sa
Go to RobertshawRobertshaw linkRobertshaw:9204H Deluxe Series - Mechanical Low Voltage Thermostat | Robertshaw Climate
– http://robertshawclimate.com/thermostats/9204h
Go to Replacement ComponentsReplacement Components linkReplacement Components:Honeywell T1 Pro | Heat Only Model | RCHVACParts.com
– https://www.rchvacparts.com/dealers/products/details/honeywell-t1pro
Go to WalmartWalmart linkWalmart:80 Series Single Stage Thermostat | White-Rodgers - Walmart.com
– https://www.walmart.com/ip/80-Series-Single-Stage-Thermostat
Go to SmarthomeSmarthome linkSmarthome:Venstar Two-Wire Heating Control System | Smarthome | Use this Heating Control System to add wireless remote control capability for two-wire heat-only systems.
– https://www.smarthome.com/venstar-thermostat-two-wire-heat-only-kit
Go to CadethCadeth linkCadeth:The Round Thermostat | Speciality Thermostats | CadetHeat.com | Enjoy the reliable comfort control and mercury-free operation of this low-voltage thermostat. The familiar round design offers twist-to-set movement.
– https://cadetheat.com/thermostats/the-round

Check with the manufacturer of a new thermostat to see if it is compatible with your boiler system. Most have online compatibility checkers or support forums.

The links on this page will take you to boiler thermostats online.

There has always been a debate whether you should turn back a boiler's thermostat to save fuel while you are sleeping or not at home. This is because during the heating season a boiler's water may be preset to stay at a constant temperature. We recommend no more then an 8 - 10 degree setback setting from your normal temperature setting on your boiler thermostat.

Thermostats For Hydronic Heating Systems:
Terms & Online References

Energy / Fuel Savings
Standard / 2 Wire / Heat Only
Low Voltage
Single / Multi-Stage
Digital
Programmable / 7day / 5 day
Wireless / Wi-Fi / WiFi
Learning / Smart
Combination Systems
System Compatibility / Online Finder
Wiring Diagrams
Zoning Thermostats / Single Room / Area
Ice Melt / Radiant Floor / Baseboard Heat
Residential / Commercial

Most boiler thermostats are a basic two-wire configuration. Never wire a new thermostat without first shutting off the power to the boiler.