
WT8840A1500-WT8840A1500-U Comparison
| photo | price | summary | rating |
|---|---|---|---|
![]() | $49.99 | Condition is New, Honeywell / Resideo Water Heater Control Valve Temp Sensor, 3.5 Inches, FREE SHIPPING | ![]() |
![]() | $49.99 | Condition is New, Honeywell / Resideo Water Heater Control Valve Temp Sensor, 4.5 Inch, FREE SHIPPING | ![]() |
![]() | $49.99 | Condition is New, Honeywell / Resideo Water Heater Control Valve Temp Sensor, 2.5 Inches, FREE SHIPPING | ![]() |
![]() | $130.00 | Condition is New, Honeywell WT8840A1500 Bradford White Water Heater Gas Valve Replacement, shipping cost = $10.15 | 100.0% |
![]() | $149.99 | Condition is New, Honeywell WT8840A1500 Bradford White Water Heater Gas Valve Replacement, FREE SHIPPING | 98.8% |
![]() | $199.96 | Condition is New, Honeywell WT8840A1500 Bradford White Water Heater Gas Valve Replacement, FREE SHIPPING | 99.5% |
![]() | $212.95 | Condition is New, Water Heater Gas Valve Replaces Honeywell Resideo WT8840A1500 WT8840A1500/U, FREE SHIPPING | ![]() |
![]() | $218.53 | Condition is New, Honeywell WT8840A1500 Gas Valve Indoor Installation, FREE SHIPPING | ![]() |
![]() | $220.21 | Top Pick! Condition is New, Honeywell WT8840A1500 Gas Valve, FREE SHIPPING | 99.9% |
![]() | $220.40 | Condition is New, Honeywell 321591 WATER HEATER GAS VALVE, STANDING PILOT WITH PIEZO,SETPOINT 55-1, FREE SHIPPING | 98.7% |
![]() | $222.09 | Condition is New, Honeywell WT8840A1500/U Potable Water Temperature Control, FREE SHIPPING | ![]() |
![]() | $226.93 | Condition is New, Honeywell WT8840A1500 Water Heater Gas Valve Standing Pilot 1/2 in NPT, FREE SHIPPING | 99.0% |
| photo | price | summary | rating |
|---|---|---|---|
![]() | $115.00 | Top Pick! Condition is New – Open box, Resideo Honeywell WT8840A1500 Nat Gas 4" wc 1/2 psi hot water heater regulator, FREE SHIPPING | 100.0% |
| photo | price | summary | rating |
|---|---|---|---|
![]() | $14.77 | Condition is Used, WV8840A1000 Honeywell Water Heater Gas Valve Control Dial w/ Spring Red, FREE SHIPPING | 99.9% |
![]() | $16.77 | Condition is Used, Honeywell Water Heater Gas Valve Control Dial Knob w/Spring (Red), FREE SHIPPING | 100.0% |
![]() | $17.95 | Condition is Used, Honeywell Water Heater Gas Valve Black Control Dial, FREE SHIPPING | 99.9% |
![]() | $18.05 | Top Pick! Condition is Used, Honeywell Water Heater Gas Valve Control Dial w/ Spring Black P#WV8840B1158, FREE SHIPPING | 99.9% |
![]() | $18.05 | Condition is Used, Honeywell Water Heater Gas Valve Control Dial w/ Spring Red P#WV8840A1000, FREE SHIPPING | 99.9% |
![]() | $18.95 | Condition is Used, Honeywell Water Heater Gas Valve Control Dial Knob w/Spring (Red), FREE SHIPPING | 99.8% |
![]() | $18.95 | Top Pick! Condition is Used, Honeywell Water Heater Gas Valve Control Dial w/ Spring Black P#WV8840B1158, FREE SHIPPING | 99.9% |
![]() | $19.95 | Condition is Used, Honeywell Water Heater Gas Valve Black Control Dial w/Spring, FREE SHIPPING | 99.9% |
![]() | $19.95 | Condition is Used, Honeywell Water Heater Gas Valve Control Dial w/ Spring Red M# WV8840A1000, FREE SHIPPING | 99.9% |
![]() | $20.00 | Top Pick! Condition is Used, Honeywell Water Heater Gas Valve Control Dial w/Spring (Black), FREE SHIPPING | ![]() |
![]() | $21.95 | Top Pick! Condition is Used, Honeywell Water Heater Gas Valve Control Dial w/ Spring Black WV8840B1158, FREE SHIPPING | 99.9% |
![]() | $21.95 | Condition is Used, Honeywell Water Heater Gas Valve Control Dial w/ Spring Black M# WV8840B1109, FREE SHIPPING | 99.9% |
![]() | $29.95 | Condition is Used, Honeywell Water Heater Gas Valve Control Dial w/Spring (Black) Set of 2., FREE SHIPPING | 99.6% |
![]() | $29.95 | Top Pick! Condition is Used, (2) Honeywell Water Heater Gas Valve Control Dial w/Spring (Black), FREE SHIPPING | ![]() |
![]() | $39.95 | Condition is Used, Honeywell Water Heater Gas Valve Control Dial Knob w/Spring (Red) Set of 4., FREE SHIPPING | 99.8% |
![]() | $49.95 | Condition is Used, Honeywell Water Heater Gas Valve Control Dial Knob w/Spring (Red) Set of 5., FREE SHIPPING | 99.6% |
![]() | $89.99 | Top Pick! Condition is Used, Honeywell Water Heater Gas Valve Controller WT8840A1500, FREE SHIPPING | 99.4% |
![]() | $94.95 | Condition is Used, Honeywell Water Heater Gas Valve WT8840A1500, FREE SHIPPING | 99.9% |
| photo | price | summary | rating |
|---|---|---|---|
![]() | $9.99 | Condition is Open box, Honeywell / Resideo Dial Knob Spring For Water Heater Gas Control Valve, FREE SHIPPING | ![]() |
![]() | $129.98 | Condition is Open box, HONEYWELL WT8840A1500 2" SPUD Bradford White Water Heater Gas Valve RESIDEO, shipping cost = $20.00 | 100.0% |
![]() | $197.00 | Condition is Open box, Honeywell/Resideo Water Heater Gas Valve Controller WT8840A1500, shipping cost = $10.99 | 100.0% |

The Honeywell Resideo WT8840A1500 water heater gas control valve is a high-performing and reliable component designed for use in natural gas water heating systems. This valve is engineered to deliver consistent and efficient gas flow to ensure optimal performance of your water heater.
The WT8840A1500 is a diaphragm-type gas control valve, which means it utilizes a diaphragm to separate the gas and water sides of the valve. This design provides excellent sealing capabilities and helps prevent corrosion, ensuring a long service life. The valve is also equipped with a thermostat, which accurately measures the water temperature and regulates the gas flow accordingly to maintain the desired temperature.
One of the key features of this valve is its ability to adjust the gas input rate. The WT8840A1500 offers a modulating range of 0-100% of the gas input, allowing for precise temperature control and energy efficiency. This can help reduce energy costs and extend the life of the water heater.
The valve is constructed with durable materials, including a brass body and stainless steel diaphragm, which are resistant to corrosion and wear. The valve also features a leak-proof design, with a sealed diaphragm and O-ring seals, to prevent gas leaks and ensure safe operation.
Installing the Honeywell Resideo WT8840A1500 gas control valve is a straightforward process. It is compatible with both vented and power-vented water heaters, and can be easily connected to the water heater and gas line using the provided fittings and hoses. The valve also comes with a clear and easy-to-read temperature dial, making it simple to set and monitor the water heater temperature.
Overall, the Honeywell Resideo WT8840A1500 water heater gas control valve is an excellent choice for those seeking a reliable, efficient, and easy-to-use gas control valve for their natural gas water heating system. Its modulating range, durable construction, and safe and easy installation make it a top pick for homeowners and professionals alike.
Honeywell Resideo WT8840A1500 Gas Control Valve: A Detailed Analysis
The Honeywell Resideo WT8840A1500 is a gas control valve designed for natural gas water heaters. In this analysis, we will discuss its key features, advantages, and potential drawbacks to help you make an informed decision.
Features:1. The WT8840A1500 is a direct-acting, diaphragm-operated gas control valve that ensures precise fuel delivery.
2. It features a built-in electronic ignition system for easy installation and operation.
3. This valve is designed with a safety thermostat that shuts off the gas supply when the water temperature exceeds a certain limit.
Advantages:1. Precise fuel delivery: The WT8840A1500 delivers an accurate amount of fuel to the water heater, ensuring optimal performance and energy efficiency.
2. Easy installation: With its built-in electronic ignition system, this valve eliminates the need for a separate igniter, simplifying the installation process.
3. Safety features: The integrated safety thermostat helps prevent potential temperature-related issues, adding a layer of security to your water heating system.
Disadvantages:1. Cost: Compared to other gas control valves, the Honeywell Resideo WT8840A1500 may be pricier due to its advanced features and technology.
2. Limited compatibility: This valve is specifically designed for natural gas water heaters, so it may not be suitable for other types of heating systems.
Conclusion:The Honeywell Resideo WT8840A1500 gas control valve offers advanced features, such as precise fuel delivery, easy installation, and safety mechanisms, making it an excellent choice for those looking for a high-performance, reliable water heater component. However, its cost and limited compatibility with certain heating systems may be potential drawbacks for some users.
Recommendation:If you are in the market for a natural gas water heater and prioritize advanced features, the Honeywell Resideo WT8840A1500 gas control valve is a solid investment. Its precise fuel delivery, easy installation, and safety features make it a worthwhile addition to your water heating system. However, if you are working with a limited budget or have a different type of heating system, you may want to explore alternative options.
Details:
Original box and manufacturer documentation. Items may show signs of wear, handling, or imperfections such as light scratches, discoloration, minor packaging damage. Compatibility: designed for standard atmospheric vent natural-gas water heaters. Mounting orientation: vertical.
Outlet size: 1/2 inverted flare. Some boxes may show minor wear or damage from previous shipping storage. Box may show light handling wear from storage. Included: control valve, user documentation, and original box.
Engineered for reliability and precision, this unit regulates gas flow, maintains consistent water temperature, provides safety shut-off functionality. Pilot type: standing pilot. Inlet size: 1/2 not. Please review all pictures carefully before purchasing if its not in the pictures, box.
Note:item is brand new, opened only to verify condition and contents. Key features: brand: Resideo formerly Honeywell. Gas type: natural only. Regulator setting: 4.0 in.
Temperature range: factory-set for residential water heaters. Model: WT8840A1500. It comes ready for installation with a factory-calibrated regulator and durable construction built to withstand high-temperature pressure environments. Type: water heater gas control valve.
This model is ideal for oem replacements or repairs on compatible natural-gas water heaters.
specifications centrafurn:
- brand: Fits Honeywell Resideo
- mpn: Wt8840a1500
- model: Fits Wt8840a1500 Wt8840a1500/u
- type: Water Heater Gas Valve
shipping centrafurn:
- type: calculated
- carrier: usps
- transit: 4-11 days
- class: economy, standard, expedited
- service: usps media mail, usps ground advantage, usps priority mail
payments centrafurn:
- credit card: diners-club
- other
- wallet: paypal
offer centrafurn:
- prices: $49.95–$226.93
- item condition:
- New
- New – Open box
- Used
- Open box
- availability: in stock
- options: ship-to-home
- started: november 4, 2025
- in stock #: 5
- sold #: 31
returns centrafurn:
- method: money back
- policy: returns accepted
- time: 30 days
- paid by: seller
seller centrafurn:
- rating: 0.0%
- # reviews: 549
- city: livingston, texas
general centrafurn:
- category: Home & Garden > Heating, Air > Cooling Systems > Central Furnaces
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