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Honeywell #T822K1018, Mercury Free T822, Heat Only, Vertical ThermostatHoneywell #T822K1018, Mercury Free T822, Heat Only, Vertical Thermostat
Honeywell #T812A1002, T812, Heat Only, Square ThermostatHoneywell #T812A1002, T812, Heat Only, Square Thermostat
Honeywell #T498B1553, T498 Beige Electric Heat Thermostat, w/ Pos OffHoneywell #T498B1553, T498 Beige Electric Heat Thermostat, w/ Pos Off
Honeywell #T498B1512, 120/208/240V DPST 22AMP 40-80F
Honeywell #T4398A1021, T4398 Electric Heat Thermostat, w/ ThermometerHoneywell #T4398A1021, T4398 Electric Heat Thermostat, w/ Thermometer
Honeywell #S8610M3009, One-Rod Intermittent Pilot ControlHoneywell #S8610M3009, One-Rod Intermittent Pilot Control
Honeywell #S7800A2142, 4-Line 7800 Series Keyboard Display ModuleHoneywell #S7800A2142, 4-Line 7800 Series Keyboard Display Module
Honeywell #S688A1007, Sail Switch with 5 in. wide sailHoneywell #S688A1007, Sail Switch with 5 in. wide sail
Honeywell #RM7895A1014, On-Off Primary Control with PrePurge - Intermittent PilotHoneywell #RM7895A1014, On-Off Primary Control with PrePurge - Intermittent Pilot
Honeywell #RM7890A1015, On-Off Primary Control w/ Shutter Drive
Honeywell #RA832A1066, 120V DPST SWITCHING RELAY w/TRANSFORMER
Honeywell #R845A1030, DPST SWITCHING RELAY 120/24 VO
Honeywell #R8222U1079, 24V DPST GENERAL PURPOSE RELAY
Honeywell #R8222D1014, 24V SWITCHING RELAY W/DPDT
Honeywell #R8184G4009, 120V OIL PRIMARY 45SEC SFTY SW

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Boiler Heating Supplies Controls FAQs

Boiler controls include thermostats, transformers, control boards, low water cut-offs, safety valves, and circulator pumps that regulate and protect the heating system.

A low water cut-off shuts down the boiler's burner if the water level drops too low, protecting the boiler from operating dry and overheating.

Yes. Replacement Argo parts such as control boards, transformers, and wire kits are available for electric boiler systems.

Manufacturers typically recommend testing safety and relief valves at least once a year to confirm they release pressure properly. Always check with manufacturer safety guidelines.