What Does College of Southern Idaho Offer HVAC Students?
College of Southern Idaho in Twin Falls, Idaho offers an associate degree and 2 certificates in HVAC through its Air Conditioning, Refrigeration, and Heat program. Tuition and fees for 2024–25 were $3,360 for a full-time year (in-district), the lowest of the 4 Idaho schools we list with federal figures. The school awarded 17 HVAC credentials in 2024–25, more than any other Idaho school here. Best for keeping tuition low in Idaho.
College of Southern Idaho HVAC Tuition: $3,360 a Year
- Tuition and fees
- $3,360 in-district, 2024–25
- Out of state
- $6,840 2024–25
- Books and supplies
- $1,060 2024–25 estimate
- HVAC certificates awarded
- 13 2024–25
- HVAC associate degrees
- 4 2024–25
- Graduation rate
- 33% school-wide, Fall 2018 cohort
- Students enrolled
- 10,176 school-wide, Fall 2024
Tuition and fees are for a full-time year. Awards count HVAC credentials conferred. Graduation rate and enrollment cover the whole school. Source: NCES College Navigator.
HVAC Degree and Certificates at College of Southern Idaho
| Award | Type | Length |
|---|---|---|
| Air Cond - Refrig and Heat, Associate of Applied Science | Associate | 60 credit hours |
| Air Cond - Refrig and Heat, Intermediate Technical Certificate | Certificate | 32.5 credit hours |
| Air Cond - Refrig and Heat, Basic Technical Certificate | Certificate | 8 credit hours |
As listed on College of Southern Idaho's HVAC program page, reviewed September 26, 2026.
From Residential to Commercial Systems: What College of Southern Idaho Teaches
The degree includes a full course in ammonia refrigeration alongside furnaces, heat pumps and commercial refrigeration.
- Refrigeration systemscommercial refrigeration, ammonia refrigeration
- Heating, furnaces and boilers
- Air conditioning
- Heat pumps and geothermal
- Commercial and industrial systemscommercial refrigeration
When College of Southern Idaho HVAC Classes Meet
Schedule. The program has limited enrollment and separate admission steps.
Where You'll Train: Twin Falls Campus
- Twin Falls campus315 Falls Avenue, Twin Falls, ID
Check start dates, admission steps and the current course list on College of Southern Idaho's own site.
Visit csi.eduWhat HVAC Technicians Earn Around Twin Falls
HVAC technicians in the Twin Falls, ID metro area earn a median $51,080 a year. Across Idaho, the median HVAC technician wage is $56,240 a year, from $38,660 at the 10th percentile to $80,780 at the 90th, with 4,550 HVAC mechanics and installers employed. The national median is $61,010. Source: BLS OEWS, May 2025.
College of Southern Idaho HVAC FAQ
Does College of Southern Idaho Have an HVAC Program?
Yes. College of Southern Idaho offers an associate degree and 2 certificates in HVAC at Twin Falls campus. Training covers refrigeration systems, heating, furnaces and boilers, air conditioning, heat pumps and geothermal, commercial and industrial systems.
How Much Does HVAC School Cost at College of Southern Idaho?
College of Southern Idaho's 2024–25 tuition and fees were $3,360 for a full-time year (in-district) and $6,840 out of state, with books and supplies estimated at $1,060. HVAC students also buy hand tools and meters.
How Long Is the HVAC Program at College of Southern Idaho?
Air Cond - Refrig and Heat, Associate of Applied Science: 60 credit hours. Air Cond - Refrig and Heat, Intermediate Technical Certificate: 32.5 credit hours. Air Cond - Refrig and Heat, Basic Technical Certificate: 8 credit hours.
Does College of Southern Idaho Offer Night or Weekend HVAC Classes?
The program has limited enrollment and separate admission steps.
How Much Do HVAC Technicians Make in Idaho?
The median HVAC technician wage in Idaho is $56,240 a year, and the middle half earn between $47,250 and $67,030 (BLS, May 2025).
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