biological products etc.), Will work with hazardous/toxic materials Job Description Job Title: Senior Upstream Processing Technician Thermo Fisher places a strong emphasis on employee development, fostering an inclusive…
Skilled Trades · St. Louis, MO
HVAC Technician jobs in St. Louis, MO
HVAC technicians install, service, and repair heating, cooling, and ventilation systems, diagnosing refrigeration and electrical faults in homes and commercial buildings.
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Open roles today
$18–$42/hr
Typical pay range
$55k
Median, full-time
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Fresh in this list
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Open hvac technician roles
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We’re hiring Experienced Refrigeration Technicians in Missouri & Kansas! Not in Missouri & Kansas? Relocation opportunities are available... ...and Kansas! Diagnose, repair, and optimize commercial HVAC/ R systems What y…
shift, Strong Odors (chemical, lubricants, biological products etc.) Job Description Job Title: Senior Upstream Processing Technician Location/Division Specific Information: St. Louis, MO Thermo Fisher places a strong em…
$20 per hour
up to 75 lbs. ~ Able to work approximately 1 Saturday per month and offer flexibility in shift coverage. ~ Missouri Pharmacy Technician license "" Candidates who are back-to-work, people with disabilities, without a coll…
Job Details: Mechanical HVAC Project Engineer Premier Missouri based MEP firm has an immediate need for a seasoned engineer to come on board managing projects and designing cutting-edge HVAC systems for diverse building…
HVAC Technician Jobs: Now Hiring HVAC Service Technicians in St. Louis As a 70-year-old family owned business, Galmiche & Sons is seeking experienced Full Time technicians that are looking for a long term career with a r…
$30 - $60 per hour
A quickly growing local company is looking to fill a SR. HVAC Service Technician position. Competitive compensation and plenty of opportunities for professional development! * Competitive Pay * Professional Growth * Grea…
established local Mechanical Company is looking to fill an Refrigeration Technician position. Excellent benefits, competitive compensation, and... ...issues that arise Requirements: * Residential or Commercial HVAC Servi…
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What hvac technicians earn in St. Louis
Hourly first — that's how the offer arrives
| Experience | Hourly | Annual, full-time |
|---|---|---|
| Apprentice | $18–$23 | $37k–$48k |
| Journeyman | $22–$31 | $46k–$64k |
| Master / Lead | $30–$42 | $63k–$87k |
Adjusted for the St. Louis market from national ranges.
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What employers ask for
The skills these listings keep naming
EPA 608 certificationRefrigeration cycle diagnosisElectrical troubleshootingBrazing and pipe workHeat pumps and mini-splitsDuctwork and airflowManifold gauges and metersCustomer communication
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Interview questions worth rehearsing
With the thing the interviewer is actually listening for
A system is running but not cooling. Walk me through your diagnosis.
Show the sequence: filters and airflow first, then charge, superheat and subcooling, and electrical components. Ruling out the simple causes first signals experience.
What EPA 608 certification level do you hold?
State it directly, ideally Universal. If you also hold NATE or manufacturer certifications, this is the moment to list them.
How do you handle refrigerant recovery and the newer A2L refrigerants?
Describe proper recovery procedure and any experience with R-454B or R-32 handling requirements. Awareness of the refrigerant transition reads well.
Tell me about a callback you got. What went wrong and what did you change?
Own it briefly, explain the missed cause, and describe the habit you added, like verifying charge by measurement instead of rule of thumb.
What is your experience with heat pumps and mini-split systems?
Be specific about brands installed and serviced, inverter board diagnostics, and cold-climate installs. Demand for this experience keeps rising.
How do you talk a homeowner through a repair-versus-replace decision?
Explain giving honest numbers on age, refrigerant type, and efficiency, then letting the customer choose. Trust drives maintenance-agreement sales.
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Resume tips that move the needle
For hvac technicians specifically — generic advice costs you here
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Put your EPA 608 certification level in the first line; Universal is the strongest signal.
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Add NATE, OSHA 10, and manufacturer certifications such as Carrier, Trane, or Mitsubishi.
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Split residential and commercial experience, and name equipment: RTUs, heat pumps, mini-splits, furnaces.
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Quantify service work with calls per day, first-visit fix rate, or maintenance agreements sold.
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Mention experience with the A2L refrigerant transition (R-454B, R-32) to show you are current.
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List diagnostic tools you own, from digital manifolds to combustion analyzers.
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Where this role goes
Typical progression
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HVAC Apprentice
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HVAC Technician
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Senior or Lead Technician
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Service Manager or Contractor
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