Residential HVACR Heating (Online) is a Certificate program (100% Online) offered by ACVOLT Tech School in Colton, CA. The program takes 3 months — 13 Wednesday classes (39 hours) to complete, with a total tuition of $900.
Program Overview
The Residential HVACR Heating program, online, is an official ACVOLT Technical School program to safely install, adjust, diagnose, start up and maintain residential heating systems. Its general objective is to train the student to identify, select, install, verify, adjust, diagnose, start up and maintain residential heating systems safely, applying the manufacturer's instructions, measurements and the relevant codes.
Scope. Natural gas, propane and electric heat: forced-air furnaces, residential rooftop units and water heaters. Not included: boilers, mini-splits, heat pumps or commercial rooftop units. Mini-splits and heat pumps are offered as separate specialties.
Two formats, one certificate. The program runs in person in Colton or online, with the ESCO Institute Gas Heating certification in both formats.
What you earn. A certificate of completion issued by ACVOLT Technical School upon meeting the program requirements, and the ESCO Institute Gas Heating Certification, subject to passing the applicable exam and meeting ESCO requirements.
What sets this Program apart
Combustion analysis and Low NOx. Month 2 covers complete and incomplete combustion, carbon monoxide (CO) and combustion analysis — O₂, CO, calculated CO₂, flue-gas temperature and excess air — and Low NOx and Ultra Low NOx operation, components and emissions considerations.
Gas valve calibration to the rating plate. Inlet and manifold pressure, input in cubic feet and safe adjustment according to the rating plate and specifications.
Real equipment. Live classes, demonstrations on real equipment, measurements, supervised practice and assessments of knowledge and skills.
An industry certification in both formats. The ESCO Institute Gas Heating Certification is included in person and online, and the last month includes preparation for the ESCO exam and a comprehensive practical assessment.
Live, with the recordings. Online, the classes are live on Wednesdays, with a Telegram group and immediate access to the recordings.
Admission Requirements and Process
Enrollment is with the school. Enrollment in in-person programs is handled by the school. Enrollment is by phone or WhatsApp with the school office.
Previous experience. "It depends on the program. Tell us about your experience and the area that interests you before choosing."
Before you enroll. Tell the school whether you're starting out or already working in the trade; admissions must confirm the entry level, documents and tools needed for your chosen group. Confirm included courses, practice sessions, exams, access duration and certifications before paying.
The enrollment deposit. Enrollment is a $250 enrollment deposit followed by three monthly payments of $300.
General Requirements
- Tell admissions where you are starting fromTell the school whether you're starting out or already working in the trade; admissions must confirm the entry level, documents and tools needed for your chosen group.
- Previous experience depends on the programTell the school about your experience and the area that interests you before choosing.
- Confirm what your enrollment includesConfirm the included courses, practice sessions, exams, access duration and certifications before paying.
- A $250 enrollment depositEnrollment is a $250 enrollment deposit followed by three monthly payments of $300.
Application Process
- 1Talk to an advisorEnrollment in the in-person programs is handled by the school: call the office at (909) 824-4849 or message an advisor on WhatsApp.
- 2
- 3Confirm your enrollmentConfirm the price, calendar, requirements and what the program includes (courses, practice sessions, exams and certifications) before paying.
- 4Pay the enrollment depositPay the $250 enrollment deposit; the three monthly payments of $300 follow.
- 5Start on January 13, 2027Classes begin Wednesday, January 13, 2027, every Wednesday from 6:00 to 9:00 p.m. California time.
Program Schedule
Starts Wednesday, January 13, 2027, and runs 3 months. Classes are one day a week: every Wednesday, 6:00 to 9:00 p.m. California time.
Scheduled hours. 13 three-hour classes (39 hours), subject to the calendar and non-class days. The school provides the calendar; not every date is guaranteed to be a class day.
Fewer hours, same certificate. "Same certificate as the full program, with fewer hours: one 3-hour class every Wednesday."
Online. Live online classes, on Wednesdays, with immediate access to recordings.
- January 13th, 2027
Required Courses
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Campus Location
Why Accreditation Is Important
Attending an accredited school means its training has been reviewed against independent standards.
This school: ACVOLT Tech School does not state an institutional accreditation or a state approval on its website. It lists NCCER (accredited school) — ACVolt Electrical Inc., Accredited Training Sponsor since 2022 — and says it is an approved school that administers the EPA 608 and A2L certification exams.
- A reliable indicator of educational quality
- Reviewed against independent standards
- Recognized by employers and licensing boards
Cost of Attendance and Financial Aid Information
Online: $1,150 total. $300 per month: a $250 enrollment deposit + 3 monthly payments of $300 ($900) = $1,150 total.
- Enrollment deposit: $250
- Three monthly payments of $300: $900
- Total: $1,150
What it includes. Live online classes, on Wednesdays; Telegram; immediate access to recordings; the certificate of completion; and the ESCO Institute Gas Heating Certification.
The other format. The same program runs in person in Colton for $650 per month — a $250 enrollment deposit + 3 monthly payments of $650 ($1,950) = $2,200 total.
Memberships are not the program. The website membership ($149/month) and the app membership ($149.99/month) give access to classes only — no support, certificates, transcript or extras.
Financial aid. The school's website and syllabus publish no financial aid, grants or loans and no federal school code; the cost is the deposit and the three monthly payments above.
Curriculum
The syllabus (updated 19 October 2026) organises the program in three months.
Month 1 — Fundamentals, fuels and controls. Introduction to residential heating and the scope of residential water heaters; natural gas and propane system types and the classification of furnaces and residential rooftop units; characteristics of fuel gases, safety, fire and leak prevention; heating thermostats — wiring, setup and programming; components, wiring diagrams, sequence of operation and safety controls.
Month 2 — Installation, airflow, gas and combustion. Airflow measurement, restrictions, static pressure, speed selection and adjustment; heat exchangers and venting; gas piping, sizing and leak testing; gas valve calibration; combustion, carbon monoxide and combustion analysis; Low NOx and Ultra Low NOx.
Month 3 — Electric heat, diagnostics and wrap-up. Residential electric heat — heating elements, sequencers, relays, limits, circuits and protection; residential rooftop units and natural gas and propane water heaters; step-by-step diagnosis; start-up, error codes, final adjustments and performance verification; preventive maintenance, service reports, ESCO exam preparation and a comprehensive practical assessment.
Academic note. Manufacturer specifications and current codes are followed. The program does not authorize unsafe work or replace professional licensing requirements.
Required Courses
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Career Outcomes
Three careers. The school teaches three trades: HVAC — air conditioning and heating: installation, diagnostics and service; Refrigeration — residential and commercial: refrigeration cycle, cold rooms, ice machines and A2L refrigerants; and Electrical — residential and commercial electrical installations: fundamentals, plans, conductors, raceways, panels and protection.
Official certifications. "We prepare you in class, and you take the official exam at our school. You receive your credential." The school lists HVAC Excellence, ESCO (includes EPA 608), NATE, OSHA through CareerSafe and NCCER. The office confirms requirements, cost and the next exam date.
On your résumé. Use the exact title and an issuer verification link when available, and add only credentials you have already earned. "A Maestro HVACR course certificate and a credential issued by an external organization are different documents."
No outcome is promised. "These credentials document your training; employment outcomes also depend on your experience, skills and job requirements." The salary figures in the school's career videos are U.S. national medians (BLS, May 2025), "not starting salaries or guarantees".
This program's credential. The ESCO Institute Gas Heating Certification is issued by ESCO, subject to passing the applicable exam and meeting ESCO requirements; the certificate of completion is issued by ACVOLT Technical School.
What to expect as an ACVOLT Tech School student
Real equipment, hands on. "These are our classes, not stock photos. In the classroom, workshop and field—wiring thermostats, bending conduit and watching the circuit they just built come to life." The workshop has chillers, commercial racks and equipment that is opened, measured and reassembled: "Here, learning goes beyond a drawing."
If you don't measure, you're guessing. Understanding the system, checking it with measurements and making decisions on a sound basis is the way of working the school seeks to teach.
Who teaches. The school's director is a technician, contractor and educator with 23 years in the trade: five years in residential and commercial electrical work from 2003, and 18 years of field experience in commercial refrigeration and commercial HVAC from 2008. He obtained California C-10 (Electrical) and C-20 (HVAC) contractor licenses in 2015, holds the title Certified Master HVACR Educator awarded by HVAC Excellence in 2024, and began formally as an educator in October 2021.
Classes in Spanish. The school presents itself as a school of HVAC and refrigeration in Spanish ("Escuela de HVAC y refrigeración en español").
Visit us in Colton. ACVOLT Tech School Inc., 484 E Valley Blvd, Colton, CA 92324. The office is open every day, 7:00 a.m. – 5:00 p.m.; phone (909) 824-4849. School visits are by appointment only.
Testimonials
“I have only been here a short time and taken two classes, but it is a good place to learn. You feel as if you already know the instructor. The atmosphere is great and makes you want to keep learning.”
Frequently Asked Questions
Other Programs at Colton
ACVOLT Tech School in Colton, CA also offers these 6 programs at 484 E Valley Blvd, Colton, CA 92324.
- Commercial HVAC and Commercial RefrigerationOther · 8 months — weekends, 8 hours per week
- La Trinidad del OficioOther · 12 months — weekends, 8 hours per week
- Mini Splits BronzeOther · 3 hands-on days + 1 month online access
- Mini Splits GoldenCertification · 3 hands-on days + 2 months online access
- Mini Splits PlatinumCertification · 3 hands-on days + 3 months online access
- Residential HVACR Heating (In Person)Certificate · 3 months — 13 Wednesday classes (39 hours)