How to Start a HVAC Business in New Hampshire
Heating, ventilation, and air-conditioning install and repair, with strong seasonal demand. Here's the New Hampshire-specific path — structure, licensing for hvac work, taxes, insurance, and landing your first customers.
Licensing for hvac work in New Hampshire
Most states require an HVAC or mechanical contractor license; the federal EPA Section 608 certification is required to handle refrigerant nationwide. In New Hampshire, check both your city/county and the relevant state board before you advertise.
What a hvac business needs to open
Heating, ventilation, and air-conditioning install and repair, with strong seasonal demand. The setup areas that usually matter: State HVAC/mechanical license, EPA 608 certification, Liability insurance, Equipment financing partner, Maintenance-plan pricing. Typical cost to get operational: $10,000–$40,000 (tools, gauges, recovery equipment, van, license, insurance).
Pick a structure (sole proprietor or LLC)
Most New Hampshire owners start as a sole proprietor (free, no filing) or form an LLC for liability protection. The LLC filing fee is about $100, and formation typically takes about 1–3 business days online. Confirm the current fee on the state site before you pay.
Name a registered agent
If you form an LLC or corporation, New Hampshire needs a registered agent with a physical in-state address. You can be your own agent if you're available during business hours, or hire a service for about $100–$150/year.
Get your EIN from the IRS
An Employer Identification Number is free from the IRS and takes a few minutes online. You need it to open a business bank account and to hire.
Register for New Hampshire taxes
New Hampshire has no state sales tax and has no state individual income tax. New Hampshire has no sales tax and no wage income tax, but does tax business profits above a threshold (BPT/BET).
Confirm local licenses and permits
New Hampshire rarely issues a single statewide "business license" — most licensing is by city or county, plus profession-specific licenses. Check your city and your trade.
Open a business bank account and get insurance
Keep business and personal money separate from day one. General liability insurance is the baseline; some contracts also require a bond.
Put the ongoing report on your calendar
New Hampshire requires a annual report (about $100).
Getting your first hvac customers in New Hampshire
Google + reviews, home-service marketplaces, and partnerships with home inspectors and realtors. Maintenance agreements create predictable revenue. Seasonal marketing (pre-summer, pre-winter) and financing offers convert bigger jobs.
Get this as a personalized plan
FirstBearing turns this into a step-by-step roadmap for your exact business and city — with the right forms, the official links, and one next step every day. $99/month, cancel anytime.
Build my planFrequently asked
How do I start a hvac business in New Hampshire?
Confirm the licenses for hvac work in New Hampshire, pick a structure (sole proprietor or LLC), get a free EIN, register for New Hampshire taxes, open a business bank account, get insurance, then set up your Google Business Profile and line up your first jobs.
Do I need a license for a hvac business in New Hampshire?
Most states require an HVAC or mechanical contractor license; the federal EPA Section 608 certification is required to handle refrigerant nationwide.
How much does it cost to start a hvac business in New Hampshire?
Plan for $10,000–$40,000 (tools, gauges, recovery equipment, van, license, insurance), plus about $100 if you form an LLC. An EIN is free and general liability insurance runs a few hundred dollars a year for most solo operators.
Where do the first hvac customers come from?
Google + reviews, home-service marketplaces, and partnerships with home inspectors and realtors.
How much does it cost to start an LLC in New Hampshire?
The state filing fee is about $100. Beyond that, budget for a registered agent if you hire one (~$100–$150/year), the annual report (~$100), and any local license fees. An EIN is free.
Do I need an LLC to start a business in New Hampshire?
No. You can operate as a sole proprietor in New Hampshire with no state filing. An LLC adds a layer of personal liability protection and can make you look more established to customers and lenders — it's a judgment call based on your risk and goals, not a legal requirement.
How long does it take to form an LLC in New Hampshire?
Standard processing is about 1–3 business days online. Many states offer paid expedited options.
Does New Hampshire have a sales tax?
New Hampshire has no state sales tax. Some localities may still levy their own — confirm locally.
What ongoing filings does a New Hampshire LLC have?
New Hampshire requires a annual report (about $100).
Official sources
- New Hampshire — form your LLC or corporation
- New Hampshire — business tax registration
- New Hampshire — professional & occupational licensing (check hvac)
- IRS — apply for an EIN (free)
Fees and timelines are commonly-cited figures last reviewed 2025-06 and can change — always confirm on the official site. This is educational information, not legal or tax advice.