StretchLearn Course
The seasonal tasks that lower bills, prevent breakdowns, and protect your warranty.
Course Overview
This course walks you through the real maintenance tasks a homeowner can safely do on a central furnace, air conditioner, heat pump, or boiler. You will learn to read MERV ratings, clean condenser and evaporator coils, wire a common thermostat, bleed radiators, and seal ducts with mastic. Every lesson draws hard lines around the work that legally and safely requires a licensed HVAC technician.
Learning Outcomes
Replace air filters correctly and choose the right MERV rating for your equipment
Clean evaporator and condenser coils without bending fins or voiding warranties
Wire and configure a low-voltage thermostat using standard R, C, W, Y, and G terminals
Bleed hydronic radiators and check boiler pressure to restore even heat
Seal and insulate accessible ductwork with mastic and UL 181 tape to cut energy loss
Run seasonal startup and shutdown checklists and recognize when a problem requires a licensed pro
Curriculum Preview
Preview the course structure, see how the modules build on one another, and understand the path this program is designed to take you through.
Identify the major HVAC system types in homes and the safety rules that govern every task. This module sets the boundaries between homeowner work and licensed-pro work.
Master the maintenance tasks that have the biggest effect on efficiency and reliability for forced-air systems. Most no-cool and no-heat calls trace back to neglected airflow.
Take control of how your system is told to run, and keep water-based heat working evenly. This module covers low-voltage thermostat wiring and boiler and radiator basics.
Seal the leaks that waste a third of your conditioned air, run a disciplined seasonal routine, and recognize the symptoms that mean stop and call for help.
Built for Application
This program is designed around progression: focused lessons, structured modules, applied resources, assessments, and a course rhythm that turns information into usable capability.