What HVAC Technicians Do and Who Hires Them

Heating, ventilation, air conditioning and refrigeration technicians keep buildings livable and keep food, medicine and data safe. It is hands-on work that mixes mechanical skill, electrical troubleshooting and dealing with people. Here is a plain look at the job, the employers, the pay and the steps up.

What You Will Be Able to Do

• Describe the main kinds of HVAC work.
• Name the employers that hire most technicians.
• Read a pay range for this trade and know what moves it.
• List the credentials that matter and when you need them.

The Main Kinds of Work

Residential install. Crews set outdoor units and air handlers, run line sets, connect drains and low-voltage wiring, and start up new systems. It is heavy and physical, with lots of attics and crawl spaces.

Residential service. A technician drives to homes, finds out why something stopped working and fixes it. This work involves diagnosis, customer conversations and on-call rotations.

Light commercial service. Rooftop units, small chillers and refrigeration in restaurants, shops and offices. Expect more ladders, roofs and three-phase power.

Commercial refrigeration. Walk-in coolers, freezers, ice machines and supermarket racks. Work is often urgent because food is at stake.

Sheet metal and ductwork. Fabricating and installing duct in a shop or on a job site. Union sheet metal workers often do this on large projects.

Controls and building automation. Programming and fixing the systems that run large buildings. It leans more on electronics and networks.

A Normal Week

The trade is seasonal. Spring means cooling start-ups. Summer means emergency cooling calls and long days. Fall means heating tune-ups. Winter means no-heat calls and on-call nights. Hours can be long in peak seasons and slower between them. The work involves heat, cold, tight spaces, lifting and driving.

Who Hires HVAC Technicians

According to the U.S. Bureau of Labor Statistics (BLS), about 440,900 people held these jobs in 2025. Most worked for plumbing, heating and air conditioning contractors, which made up about 68% of the field. About 6% were self-employed, and about 3% worked in wholesale trade.

Other employers include:

• School districts, hospitals and universities with in-house maintenance teams.
• Commercial property managers.
• Grocery chains and restaurant groups.
• Equipment manufacturers and distributors.
• Union contractors on large construction projects.

BLS projects employment to grow about 11% from 2025 to 2035, much faster than average, with around 40,600 openings each year. Many of those openings come from people leaving the trade or retiring.

What the Job Pays

BLS reports a median wage of $61,010 a year ($29.33 per hour) for heating, air conditioning and refrigeration mechanics and installers in May 2025. The lowest-paid 10% earned under $40,050, and the highest-paid 10% earned over $95,210.

Beginning helpers and apprentices usually start well below the median. Pay rises with skill, overtime, on-call pay, location and specialty. Union apprentices typically start at a percentage of the journey-level rate and move up on a published schedule. Commercial refrigeration and controls work often pay more than residential install work. Pay varies a lot by region, so check a local listing.

Credentials That Matter

EPA Section 608 certification is required by federal law for anyone who could release refrigerant while working on stationary equipment. A technician working on motor vehicle air conditioning needs Section 609 instead. An apprentice can work under the close, continuous supervision of a certified tech, but most shops want you certified fast. Plan on it in your first few months.

NATE (North American Technician Excellence) offers voluntary tests that many employers respect. Its entry-level exams suit beginners, and its specialty exams come later.

HVAC Excellence offers employment-ready and professional-level tests, and it is common in school programs.

RSES offers training and certification, with a strong focus on refrigeration.

State and local licenses vary widely. Some states license journey-level technicians and contractors. Others leave it to cities, and a few have no HVAC-specific license. Your state licensing board has the rules. Log your hours from day one if your state counts them.

Factory training from equipment makers is useful for specific brands and is often needed for warranty work.

How People Get In

• Trade school or community college. Programs often run 6 months to 2 years and may include EPA test prep.
• Registered apprenticeship. Earn while you learn, usually over 3 to 5 years. Unions and contractor groups run these programs.
• Direct hire as a helper. Many contractors hire people with a driver's license and a good attitude, then train them.

A clean driving record is a big help, since most jobs involve a company van.

A Typical Path

Is It a Good Fit?

This trade suits people who like solving problems, working with their hands and being on the move. You should be okay with heat and cold, tight spaces, heights and physical work. People skills matter too, because a calm explanation can save a customer relationship.

Check Your Understanding

Where do most HVAC technicians work? For plumbing, heating and air conditioning contractors.

A shop says you can start now and test for EPA 608 later. Can you handle refrigerant alone before you are certified? No. You would need the close, continuous supervision of a certified technician.

A friend says NATE is required by law. Is that true? No. NATE is voluntary. EPA Section 608 is the federal requirement.

Key Takeaways

• HVAC work includes install, service, commercial refrigeration, ductwork and controls.
• About 68% of technicians work for contractors, according to BLS.
• BLS reported a May 2025 median wage of $61,010 a year, with faster-than-average job growth projected.
• EPA Section 608 is the certification you must have. NATE and others are voluntary.
• Licensing varies by state and city, so check your local rules.