Plumbing and HVAC rules in West Virginia

What the state says about plumbing and heating and cooling work, with the page each rule comes from. It's a summary of the published rules, not legal advice, and your city or county can have rules of its own.

Checked September 23, 2026

Plumbing licensing

Plumbers in West Virginia need a license from the Division of Labor, and the business needs a contractor license with the plumbing classification for residential jobs over $5,000 or commercial jobs over $25,000.^{1, 2, 3}

Heating and cooling licensing

Anyone working on heating, ventilating and cooling systems in West Virginia needs a license from the Commissioner of Labor.⁴

Plumbing and mechanical codes

Your local building department can tell you which plumbing and mechanical codes apply where you live.

Permits to replace a water heater, furnace or AC

Ask your local building department whether replacing a water heater, furnace or AC needs a permit where you live.

Backflow testing

If your home has a backflow preventer, your water utility can tell you whether it needs testing and who can test it.

Sources

What plumbing and HVAC work costs in West Virginia

Published national ranges for plumbing, water heater, sewer, AC, heat pump and furnace jobs, and a planning estimate for your own job.

Plumbing, heating and cooling costs in West Virginia

Contractors in West Virginia

183 plumbers and heating and cooling contractors are listed in West Virginia. 96 hold an active USDOT registration. Browse them by county, or ask for quotes and we'll pass your job to contractors near you.

Cite this page

“Plumbing and HVAC rules in West Virginia.” PlumbingInformationSite.com, updated September 27, 2026. https://plumbinginformationsite.com/wv/rules/