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Differential refers to the temperature range that is allowed. For example, a boiler set to 140 degrees with a 5 degree differential can have an actual temperature anywhere between 135 and 145.
Voltage, or volts, is a measurement of the difference between two electric fields (in heating terms, the difference between the Earth's electrical field and the electricity running through your wires).
Immersion-type controllers that combine high limit protection with switching relay control of burner and circulator motors.
(based on 22 reviews)
of respondents would recommend this to a friend.
Reviewed by 22 customers
Displaying reviews 1-10
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from dillon co.
Comments about High Limit Horizontal Mount Aquastat Relay, 8°F differential:
this was a direct replacement, and it worked perfectly. nothing bad to say
Bottom Line Yes, I would recommend this to a friend
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(0 of 1 customers found this review helpful)
This fits right where the other Aquastat went. Just loosen the set screw in the back and disconnect the wires and just reverse the process to install. I also installed it vertical even though it says horizontal.
Honeywell Aquastat review
By Lance S.
from Madison, WI
This aquastat is the correct control for my home heating system. There has been one minor revision of this model since the last one was installed in 2008. But, it is the height of 1950's technology and is still comparable to the original model.It is a well built simple design. It was easy to install. It is easy to adjust so that my heating system is functioning within its designed temperature range.I would buy another if needed and I would buy it here. Pexsupply processed and shipped my order quickly.
By DIY Dad
from New Hyde Park, NY
Exact match for one I was replacing, simple wire swap. Checked a few places price can't be beat. Repeat customer.
from Sonora, CA
this item was exactly what was ordered, it was delivered to California within a week, and the price was excellent. couldn't ask for more.
Great price, would buy this item again
By Jack of all trades
from Miles City, MT
I will give Pex Supply an a+ on this product. Easy hookup directions where easily understood. Local plumber was 2.5 times the price so the time it took for shipping was well worth the wait. Again A+ Thanks
Exactly what I needed
from Windsor, NY
They had exactly what I needed. I was not looking to adapt a "similar product" to my heating system, I wanted to remove and replace. This was an exact match, half-hour job going carefully and deliberately, and my system was back to fully operational. No complaints, very happy.
from Albany NY
This was a direct replacement for a unit in service since 1995.More importantly: Great price,fast shipping,communication .In other words EXCELLENT all around
from Northbridge MA
This is a specific Item which is required for my Heating System. The order process from Pex Supply is smooth and hassel free. I would definetely recommend Pex Supply to my friends.
reliable and cost effective
By Rusty Sewer Pipe
from NY, NY
Replacing my old broken honeywell L8148A 1090 aquastat relay with this part took just a few minutes, and everything worked as expected. If you are a handyman, contractor, engineer, or retired scientist, who is used to working on electrical systems, heating systems and so on, you will be satisfied with this part. If you don't know what a volt meter is, you should probably get a handyman to spend a few minutes installing and testing this part for you, cause you don't want to get electrocuted or create a huge and potentially dangerous problem with your heating system. If you want some specific advice from an electrician or HVAC contractor, consider using www.justanswer.com . It is a fast and cost effective service.
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