VR8345K4809 – FURNACE GAS VALVE

If your furnace won’t ignite and you’ve ruled out the ignitor and flame sensor, the gas valve may need replacement. This universal gas valve works with all three modern ignition types — intermittent pilot, hot surface pilot, and direct spark — making it a versatile replacement option.

Specs: 24 VAC, universal electronic ignition, natural gas/LP compatible

Replaces: VR8345K4809

Fits: Universal — compatible with most residential gas furnaces using electronic ignition

Need help? See our Furnace Not Heating Guide.

In stock at Open To Public HVAC Parts in Dallas. We test parts at the counter before you buy. Call or text (214) 340-9421.

Specs

• TypeHoneywell VR-series gas valve
• Coil Voltage24V AC
• Gas TypeNatural Gas (NG); LP conversion kit available
• OEM CompatibilityHoneywell

Cross-reference numbers

This part replaces the following OEM and aftermarket numbers:

• VR8345K4809

Not sure if your number matches? Call (214) 340-9421 or bring the old part in — bench-testing is free.

Fits these models

• Honeywell VR-series direct factory gas valve — fits Rheem / Ruud, Carrier / Bryant, Trane / American Standard, Lennox, Goodman, York, and most major residential gas furnace brands
• Verify the EXACT model number matches your old valve before swapping (VR8200 vs VR8204 vs VR8345 are different families with different control protocols)
• Verify pipe inlet/outlet thread sizes match (1/2", 3/4", or stepped) and connector pinout matches your existing wiring

How do I know if my gas valve is bad?

Verify there's 24V at the valve coil terminals during a heat call -- if there's no voltage, the board (or a safety switch upstream) is the problem, not the valve. If 24V IS present and the valve doesn't open (no audible click, no gas flow), the valve is bad. Bring it in and we'll bench-test it.

1-stage vs 2-stage gas valve -- can I swap one for the other?

No. 2-stage valves have a second, lower-input solenoid (often called "low-fire") that the control board commands separately. A single-stage furnace board doesn't have a low-fire output, so a 2-stage valve will only ever run on high. Replace a 2-stage with a 2-stage; replace a 1-stage with a 1-stage.

Slow-open vs fast-open -- does it matter?

Slow-open valves ramp gas flow over 3-7 seconds, which is gentler on the ignitor and reduces flame-rollout risk on standing-pilot or older furnaces. Fast-open valves open immediately -- required on most modern HSI-equipped furnaces because the spark/HSI window is short. Match what your unit's data plate calls for.

What's the difference between Honeywell VR and White-Rodgers 36?

Honeywell VR is the older / more common platform; White-Rodgers 36 is the direct cross-replacement on most furnaces. Most VR valves cross to a 36-series equivalent and vice versa -- but verify pipe size (1/2" x 1/2" vs 3/4" x 3/4"), stage count, and connector pinout match before swapping brands. We'll match at the counter.

Can I use natural gas valves on LP propane?

Yes, but you MUST convert the valve with the LP conversion kit (different regulator spring + jets). Burning LP through a NG-set valve will cause flame impingement, sooting, and CO production. Get the conversion kit before installing.