Furnace gas valve replacement cost
Replacing a furnace gas valve costs $200 to $800, about $500 on average. The valve itself costs $75 to $300 (up to $600 for original manufacturer parts), and labor adds $125 to $500.
Quick answer
$200 – $800parts and labor
Most gas valve replacements cost $200 to $800. Generic valves on simple furnaces start near $125; OEM smart valves on premium furnaces reach about $1,100.
Cost breakdown
- Gas valve part$75–$30038%
- Labor$125–$50062%
Share of a typical project, using the middle of each range.
Cost by brand
| Brand | Valve price | Total replacement |
|---|---|---|
| Goodman / Amana | $70 – $165 | $195 – $665 |
| York | $95 – $240 | $220 – $740 |
| Rheem / Ruud | $80 – $300 | $200 – $800 |
| Trane / American Standard | $60 – $325 | $185 – $825 |
| Armstrong / Lennox / Ducane | $75 – $500 | $200 – $1,000 |
| Heil / Tempstar | $50 – $550 | $175 – $1,060 |
| Carrier / Bryant | $80 – $600 | $200 – $1,100 |
Signs of a failing gas valve
- The igniter glows or sparks but burners never light
- Burners light and then shut off quickly (rule out the flame sensor first)
- Clicking from the valve with no gas flow
- A gas smell near the furnace: leave the house and call your gas utility from outside
Possible extra costs
- Propane conversion kit: $50 to $100
- New wiring harness for very old valves: $20 to $50
- Control board if the valve failure damaged it: $300 to $650
Gas valve work should be done by a licensed technician; DIY replacement saves labor but risks gas leaks and usually voids warranties.
How to get a fair quote
- Get at least three written quotes that list the brand, model number, size (tons or BTU) and efficiency rating.
- Ask whether the price includes permits, removal of the old unit, refrigerant, a new thermostat and any duct or electrical work.
- Ask for a load calculation (Manual J) instead of matching the old unit's size by default.
- Compare labor warranties (1 to 10 years) as well as the manufacturer's parts warranty, and register the equipment.
- Schedule non-urgent work in spring or fall, when contractors are less busy and more willing to discount.
Frequently asked questions
How much does a furnace gas valve cost to replace?
About $200 to $800 including labor, with an average near $500.
How long do furnace gas valves last?
Often 20 years or more; many last the life of the furnace.
Can I replace a furnace gas valve myself?
It isn't recommended. Gas connections must be leak-tested, and many areas require a licensed technician.
Sources
Prices are national averages and typical ranges from published cost data. Your price depends on your home, region, equipment and contractor, so get several written quotes. Heat & Air Costs is not an HVAC contractor; read our disclaimer.