Thermostat for steam heat

dc07736

What thermostat is best for steam heat?
Do not need programable.
Right now I am using a Honeywell round (24 volt) . Switch on back is set for steam.

Have 100 year old system. Historic house in Kingston NY
20 cast iron radiators - one pipe system
Installed used Burnham steam boiler 142,000 btu
DC

JohnNY

You are currently using (arguably) the best thermostat for steam heat.

PinkTavo

I had the old Honeywell Round (with the Mercury switch) that was likely 40-50 years old and when it went bad I changed to the Round with the digital display. I didn't notice any difference in operation with my steam system. I did have the first digital one fail in the 1st year, but replaced it and the second one has been going for over 10 years. If electronics are going to fail...usually it is in the first 3-6 months.

http://www.supplyhouse.com/Honeywell-T8775A1009-1-Heat-Stage-Digital-Round-Thermostat-Premier-White-4091000-p

Jamie Hall

Two of the three thermostats in the main place I care for are mercury round Honeywell T87s. There is a programmable digital... why the old mercury ones? Backup. They just don't quit. The only reason for the digital is I wanted to have the setback recovery (3 degrees) before I got going in the morning!

LionA29

@Jamie Hall
Did it really made a difference with the 3° setback?
Thanks

Jamie Hall

LionA29 said:

@Jamie Hall

Did it really made a difference with the 3° setback?

Thanks

Not really... not that I can measure. But it's nice to have all the radiators toasty at oh dark hundred on a winter's morning.