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Resideo WT8840B1000 Water Heater Gas Control Valve, NAT 160 Degree F 1" Cavity

4.4 4.4 out of 5 stars 1,604 ratings

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Purchase options and add-ons

Brand Honeywell
Item Dimensions LxWxH 8 x 6 x 6 inches
Outlet Connection Type Flare

About this item

  • Mounting in the upright position
  • Temperature ratings: ambient-- 0 c to 60 c. Inlet/Outlet Size (in.) - 1/2 inch. NPT x 1/2 inch. Inverted Flare. Capacity - Min. 30 ft3/hr, Max. 75ft3/hr
  • Pressure regulator setting (psi): 5.0 in. Wc
  • Temperature Range: 32 to 150 F
  • An included integrated NTC temperature sensor reads water temperature within the appliance up to 221 F (105 C)

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$156.98
Get it as soon as Sunday, Mar 31
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Product details

  • Is Discontinued By Manufacturer ‏ : ‎ No
  • Product Dimensions ‏ : ‎ 8 x 6 x 6 inches; 1.98 Pounds
  • Item model number ‏ : ‎ WT8840B1000
  • Date First Available ‏ : ‎ March 15, 2017
  • Manufacturer ‏ : ‎ Honeywell
  • ASIN ‏ : ‎ B06XNSV2BG
  • Customer Reviews:
    4.4 4.4 out of 5 stars 1,604 ratings

Product Description

The Wt8840 Series Is The Water Heater Control For Trade Use to replace WV8840 valves on AO Smith water Heaters. It Is Designed For Use In Standing Pilot Applications Using An Immersion Well For Water Temperature Sensing. Made in United States. Manufactured by Honeywell.

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Customer reviews

4.4 out of 5 stars
4.4 out of 5
1,604 global ratings

Customers say

Customers like the performance, ease of installation, value, and fit of the valve. For example, they mention that it works great, it's easy to install, and it'll save you money. Some appreciate the fit. That said, opinions are mixed on quality and lighting.

AI-generated from the text of customer reviews

150 customers mention134 positive16 negative

Customers like the performance of the valve. They mention that it works great, is easy to install, and has no issues. Some say that it has worked for much longer than originals.

"It is working very well." Read more

"Fast delivery, good insulation instructions, works like new." Read more

"...Be sure to have a backup or use previous.So far this is working great. I had to reset the Honeywell, because it gave me a error 7 code...." Read more

"...the valve body out to transplant it in my original housing, worked like a champ. Rheem performance water heater." Read more

87 customers mention81 positive6 negative

Customers find the installation of the valve pretty easy. They appreciate the simple instructions and procedure. Additionally, customers mention that the YouTube and included instructions were very helpful.

"Fast delivery, good insulation instructions, works like new." Read more

"...This unit with the white led, has never shut down. Install was simple, just remove old unit assembly and swap directly.." Read more

"...It’s a direct fit for many brands of gas water heater and easy to install" Read more

"...The YouTube and included instructions were very helpful. I'm delighted and saved hundreds...." Read more

52 customers mention48 positive4 negative

Customers appreciate the value of the valve. They say it's easy to install, saves money, and is worth the buy.

"...Bought these and have worked for much longer than originals! Worth the buy and reasonably priced!" Read more

"Great price. Does what it's supposed to." Read more

"...Easy to replace. Great product." Read more

"good for the price." Read more

42 customers mention32 positive10 negative

Customers like the fit of the valve. For example, they say it's a direct OEM fit for their water heater and works well. Some mention it'll fire right up.

"excellent quality fit just like original" Read more

"Fit and works perfectly for my State model GS640YBRT 300 natural gas 40 gallon water heater manufactured and installed in 2011...." Read more

"Perfect fit and fired right up." Read more

"Would not screw it ! as to short !" Read more

30 customers mention30 positive0 negative

Customers find the replacement valve fairly simple, easy to find, and install. They say it's a great replacement part and works perfectly. Some mention that the pilot stays lit.

"It was very easy to replace my old / damaged control valve." Read more

"...Easy to replace. Great product." Read more

"It was a good replacement part." Read more

"...I took a chance and bought this controller. It was easy to replace. The pilot stays lit. My family claims that they love me again...." Read more

43 customers mention20 positive23 negative

Customers are mixed about the quality of the valve. Some mention that it's a good product with great quality, while others say that it was a defective unit that fell apart after 3 months.

"...I had to reset the Honeywell, because it gave me a error 7 code...." Read more

"quick and correct" Read more

"...This thing crapped out in Feb. Imagine that. They've got this down to a science!..." Read more

"...It is legit." Read more

17 customers mention10 positive7 negative

Customers are mixed about the lighting of the valve. Some mention that it's a perfect replacement that keeps the pilot light lit and makes the burner light up, while others say that it doesn't stay lit.

"The unit worked very well. The water heater came on with no problem." Read more

"Old unit wouldn’t stay lit or heat the water totally. Kept giving me code 5 or 5 flashes before...." Read more

"Perfect fit and fired right up." Read more

"It worked. The pilot indicator did not flash when pilot was ready did have flame when adjusting the temperature knob the burner lite created hot..." Read more

15 customers mention7 positive8 negative

Customers have mixed opinions about the heating of the valve. Some mention that it heats up the water hotter than the previous unit, and beats a cold shower. However, others say that their water heater stopped heating overnight, and the product went out.

"...cracks, sensor gets fried, you get a flashly blinky error and no hot water...." Read more

"...Works perfect and beats a cold shower, It is exactly as described." Read more

"...Side note poor heating started this whole problem and I never had an error code...." Read more

"Very easy to install. Actually heat up the water hotter than the previous unit...." Read more

Does the job!
5 Stars
Does the job!
Perfect replacement for the Honeywell gas control valve unit that originally came with my water heater. Lost hot water on a holiday weekend. 5 blinks of the indicator lights said unit has failed and needs to be replaced. Can't buy this part in town so had to be ordered. 3 day shipping and I had hot water again! YouTube videos definitely help with installation process. Very happy with this Resideo unit. Picture shows old unit on the left. Notice the black deposit covering the temperature sensor. Guess that's what they look like after 10 years eventually leading to failure....
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Top reviews from other countries

Robert Nester
5.0 out of 5 stars Mine took two weeks to get delivered. Of cource wished sooner because it was for our hot water.
Reviewed in Canada on December 15, 2023
Leanne
5.0 out of 5 stars Great
Reviewed in Canada on April 12, 2019
One person found this helpful
Report
Ben Ballano
5.0 out of 5 stars Gas Control Valve replacement
Reviewed in Canada on August 23, 2021
AndyDandy
1.0 out of 5 stars Damaged product from factory.
Reviewed in Canada on November 27, 2019
Customer image
AndyDandy
1.0 out of 5 stars Damaged product from factory.
Reviewed in Canada on November 27, 2019
Product was damaged on arrival
Images in this review
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Wayne L.
2.0 out of 5 stars Does burner tube still fit
Reviewed in Canada on November 6, 2020