We are independent & ad-supported. We may earn a commission for purchases made through our links.

Advertiser Disclosure

Our website is an independent, advertising-supported platform. We provide our content free of charge to our readers, and to keep it that way, we rely on revenue generated through advertisements and affiliate partnerships. This means that when you click on certain links on our site and make a purchase, we may earn a commission. Learn more.

How We Make Money

We sustain our operations through affiliate commissions and advertising. If you click on an affiliate link and make a purchase, we may receive a commission from the merchant at no additional cost to you. We also display advertisements on our website, which help generate revenue to support our work and keep our content free for readers. Our editorial team operates independently from our advertising and affiliate partnerships to ensure that our content remains unbiased and focused on providing you with the best information and recommendations based on thorough research and honest evaluations. To remain transparent, we’ve provided a list of our current affiliate partners here.

What is HVAC Maintenance?

By D. Jeffress
Updated May 17, 2024
Our promise to you
AboutMechanics is dedicated to creating trustworthy, high-quality content that always prioritizes transparency, integrity, and inclusivity above all else. Our ensure that our content creation and review process includes rigorous fact-checking, evidence-based, and continual updates to ensure accuracy and reliability.

Our Promise to you

Founded in 2002, our company has been a trusted resource for readers seeking informative and engaging content. Our dedication to quality remains unwavering—and will never change. We follow a strict editorial policy, ensuring that our content is authored by highly qualified professionals and edited by subject matter experts. This guarantees that everything we publish is objective, accurate, and trustworthy.

Over the years, we've refined our approach to cover a wide range of topics, providing readers with reliable and practical advice to enhance their knowledge and skills. That's why millions of readers turn to us each year. Join us in celebrating the joy of learning, guided by standards you can trust.

Editorial Standards

At AboutMechanics, we are committed to creating content that you can trust. Our editorial process is designed to ensure that every piece of content we publish is accurate, reliable, and informative.

Our team of experienced writers and editors follows a strict set of guidelines to ensure the highest quality content. We conduct thorough research, fact-check all information, and rely on credible sources to back up our claims. Our content is reviewed by subject matter experts to ensure accuracy and clarity.

We believe in transparency and maintain editorial independence from our advertisers. Our team does not receive direct compensation from advertisers, allowing us to create unbiased content that prioritizes your interests.

Heating, ventilation, and air conditioning (HVAC) systems are essential to providing comfortable living and working environments. Some HVAC units are small and relatively simple in design, such as those found in houses and apartments. Others are huge, complex machines that heat and cool large factories, buildings, schools, and hospitals. Regular HVAC maintenance is essential to ensure that units do not break down and that they operate at maximum efficiency. People can usually perform simple HVAC maintenance tasks themselves on small units by following owner's manual guidelines, while large systems require the expertise of trained mechanics.

Residents of apartments and houses should inspect their HVAC units every few months to keep them working properly. Owner's manuals usually include simple preventive maintenance checklists with helpful instructions and diagrams. They explain the tools and techniques needed to take off covers and identify the internal parts. Turning off the power source, removing metal guards and casings, and wiping dust off everything inside can significantly improve the performance of the unit. In addition, most home HVAC units are equipped with replaceable air filters made with fiberglass, carbon fiber, or charcoal that should be changed according to owner's manual specifications.

A certified HVAC mechanic can be consulted if a homeowner is not comfortable performing maintenance or if the unit stops working properly. Professional mechanics have specialized training to repair the motorized gears, engines, electrical circuits, and fluid reserves found within HVAC systems. They can diagnose problems, replace damaged filters and parts, and test units to make sure their repairs were successful. HVAC maintenance experts can be found by conducting an Internet search of local technicians or contacting the unit manufacturer. Timely HVAC maintenance procedures are important to ensure systems continue to run strongly for many years.

The heating and cooling systems used in schools, manufacturing plants, and other large buildings are often very different than home HVAC units. Systems often feature detailed controls and gauges, boilers, pressurized pipes, and long ventilation ducts that deliver hot and cold air. HVAC maintenance on such units requires expert technical knowledge and problem solving skills. Professional technicians carefully handle and replace potentially hazardous refrigerants, cut and weld lengths of pipe, lubricate gears, and maintain huge gasoline and electrical engines. Technicians carefully inspect the quality of workmanship after completing maintenance jobs, checking for leaks and measuring the efficiency of airflow throughout the units.

AboutMechanics is dedicated to providing accurate and trustworthy information. We carefully select reputable sources and employ a rigorous fact-checking process to maintain the highest standards. To learn more about our commitment to accuracy, read our editorial process.

Discussion Comments

By anon164321 — On Mar 31, 2011

what is the difference between a hvac tech and a stationary engineer?

By anon155462 — On Feb 23, 2011

Very well said. A lot of people need to be taking their maintenance in there own hands, at least the little things. Drain lines should be flushed and filters should be changed 3 months or less depending on certain household circumstances. --Dave

AboutMechanics, in your inbox

Our latest articles, guides, and more, delivered daily.

AboutMechanics, in your inbox

Our latest articles, guides, and more, delivered daily.