How much does a furnace gas valve replacement cost?

Furnace gas valve replacement cost

A furnace gas valve replacement costs $200 to $800 on average. Furnace gas valve prices are $75 to $300 for the part alone or up to $600 for original manufacturer parts (OEM). Gas valve replacement labor costs $125 to $500. Furnace gas valve repair costs $75 to $200.

Cost data is from research and project costs reported by HomeGuide members.

Furnace gas valve prices by brand

Furnace gas valve prices are $50 to $300 on average or up to $600 for original manufacturer parts (OEM) without installation. Gas valve prices depend on the type and brand.

Gas valve for furnace cost factors

The cost of replacing a furnace gas-control valve depends on the valve type, brand, part availability, furnace accessibility, and local labor rates.

Additional cost factors include:

• Furnace type – Gas valves for two-stage and modulating heat furnaces are more complex and cost more than single-stage valves.
• Brand – Universal parts are cheaper while original manufacturer parts (OEM) cost more.
• Electronic vs. standing pilot – Valve prices for electronic ignition systems are typically higher than for standing pilot lights.
• Propane/natural gas valve conversion – Conversion kits cost an additional $50 to $100 on average.
• New wiring – A basic gas-valve wiring harness costs $20 to $50 and is typically necessary when replacing a very old gas valve.
• Accessibility – Hard-to-reach furnaces increase labor costs.
• Warranty – Most furnace warranties cover parts for 5 to 10 years, but not labor.
• Location – Labor rates are higher in metropolitan areas than rural areas.
• DIY vs. professional – DIY heater gas-valve replacement saves $125 to $500 in labor cost but typically voids active warranties.

Furnace gas-valve replacement labor cost

The labor cost alone of a furnace gas valve replacement is $125 to $500 when hiring a certified HVAC technician.

• Furnace repair contractor rates are $75 to $150 per hour on average.
• Minimum call-out fees are $75 to $200, which typically includes the first hour of work.
• HVAC emergency service costs $140 to $210 per hour for repairs outside of regular business hours.

Furnace gas valve repair cost

A furnace gas valve repair costs $75 to $200 for diagnostics, valve cleaning, and tightening connections for minor problems. However, a faulty gas valve that needs internal repairs requires a full gas valve replacement. Only the part manufacturer can legally repair a gas valve for safety reasons.

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Cost to replace gas fireplace valve

The cost to replace a gas fireplace valve is $300 to $500 on average, including a full fireplace inspection and diagnostic tests. The total cost depends on the valve brand and fireplace accessibility.

Frequently asked questions

What is the gas valve on a furnace?

The gas valve on a furnace opens or closes to regulate the gas flow to the pilot light and burners. A properly functioning gas valve is necessary to stop gas leaks and maintain indoor temperatures. Gas-valve designs are specific to different furnace makes and models.

Gas valves must be compatible with the furnace’s blower-motor type:

• Single-stage blowers have one high-heat setting only.
• Two-stage blowers have either low- or high-heat settings.
• Modulating blowers have variable heat settings for precise temperature control.

How to know if a furnace gas valve is bad

If a furnace gas valve is bad, there will be no warm air coming from the furnace, or it will shut down completely. Faulty gas valves are a major safety concern. Contact an HVAC technician to test the valve and diagnose the source of the problem.

Are furnace gas valves interchangeable?

Some furnace gas valves are interchangeable between propane and natural gas models, depending on the furnace brand, location, type, and local building codes.

How long does it take to replace a furnace gas valve?

Replacing a furnace gas valve takes 30 to 60 minutes on average or up to 2 hours for hard-to-access locations like crawlspaces and small attics. This time includes HVAC diagnostic tests. Most technicians charge a minimum service fee regardless of the time spent.

Where to buy a furnace gas valve

Buy a furnace gas valve from Amazon, Walmart, or HVAC distributors and service companies for the widest selection. Buying directly from the manufacturer typically costs more but ensures an exact match.

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Hiring a furnace repair service

Before hiring a furnace repair service near you, be sure to:

• Compare at least three estimates.
• Verify the HVAC contractor has a state license with gas-piping qualifications.
• Check for certifications from:
  • NATE (North American Technician Excellence)
  • American Society of Heating, Refrigeration, & Air-Conditioning Engineers (ASHRAE)
  • HVAC Excellence
  • Other local HVAC training programs
• Look at their reviews on HomeGuide and Google.
• Seek certified, insured, and bonded companies with 5+ years of experience.
• Get a written estimate, contract, and warranty before work begins.
• Avoid companies with the cheapest quotes as quality may suffer.
• Don’t pay in full upfront. Schedule a payment plan and save receipts.

Questions to ask

• Can you show me a list of references?
• Do you provide free estimates?
• How long will the job take?
• Can you recommend ways to increase the efficiency and lifespan of my furnace?
• Do you offer a full furnace cleaning as well to prepare my system for winter?
• How can I help prevent gas leaks in my furnace?
• Will you use original equipment manufacturer parts?
• Do you offer an HVAC maintenance plan? If so, what does it include?
• What does your warranty or guarantee include?
• Will you provide a written report summarizing the repairs and maintenance?

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