AD1S Powerhead, 24 VAC, with End Switch, 18" Leads - Replacement for Honeywell V8043A, V8043E, V8043G and V8043F Power Heads, Replacement of 40003916-026 40003916-021 and 40003916-012

changed it works well, heat back on

I've been a handy man for many years. I was surprised to find this well-built piece in the box. Packed new in original carton and a heavier duty unit to boot. I found it to be much better than the Honeywell. Fit as well as function is perfect. Sorry, the thieves lost on this one! Thanks to Amazons next day delivery, all is great! Perfect!

The part worked perfectly. Great price point. Easy to install. I would have given it a 5, but when manually operating the switch, the manual arm would occasionally slip on the gear.. Seemed like it was more of an alignment. But once connected with the thermostat, it worked fine.

Exact replacement for Honeywell V8043E. The HW failed after about 10 years. This product was a direct replacement. Two screws to attach it in opposite corners which the new one came with. I bought this because I could get it delivered in 3 days to the interior of Alaska. I will buy another for a spare. 09.08.2023 it cost $49.95. The HW was made in Hungary. I could not find where the replacement was manufactured. Would have been nice if it came with 4 wire nuts but I had some on hand.

I have a 2-zone system both valves were over 15 years old and both faulted within a month of each other the first arrived within a day and the other in 7 days both have been working great

This is my second purchase of this model. My system has 3 zones. The first one was purchased in 2019 and still operates like it should. I made this purchase to replace another HW that went bad. I will be getting a 3rd to keep as a spare as well. These are not garbage knockoffs... Are they cheap compared to others? Yes. Do they work as they should? Yes. Do they last? Mine has. Very easy to replace, 2 screws and 4 low voltage wires. This unit can also replace your powerhead that has the screw terminals on top.

ok

The linkage was loose as a goose and basically had the same problem as the unit I was replacing. The old unit had worn gears on both motor and driven linkage so the valve would not open fully and therefor would not activate the boiler. I put the new motor into the old box in which the linkage was held firmly on the shaft and it, at least for now, is working fine. The linkage on the new box just flopped around on the shaft such that the motor gear would skip across the linkage teeth. This is an aftermarket brand and I would recommend only purchasing OEM.

It is easy to install and works. Will add review if it works for over a year.

Looks and feels like very good quality, was exact replacement for Honeywell one, fits in nicely. Has been working for a couple of weeks now, hopefully it lasts. Was first tempted to order just the internal motor, good thing I order the complete unit because the old unit was bad mechanically, gear teeth were slipping and heat would be on all the time.

very good, i received it in good order, and it fitted and worked good.

Very happy with product and price. I just installed it and it works precisely as described.

Direct fit for Honeywell..easy install