All Your HVAC Questions, Answered: Maintenance Tips, Buying Info, and More
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HVAC systems are the systems by which we cool, heat, and ventilate our houses. Whether you have a boiler or a furnace, split-unit central air, or a geothermal system, HVACs are a major element—and expense—of home ownership. However, maintaining, operating, and shopping for them can be a bit intimidating, not to mention confusing. That’s why we’re here to answer your questions, teach you the HVAC basics, and help you determine what you can handle yourself and when you should call in a professional.
Curious when to replace your HVAC filter? Unsure when to get your system serviced? Thinking you might be ready for a new unit? Below, we have you covered with all the information you need to feel like an empowered, in-the-know HVAC user and shopper. Keep reading for thoughtful, reliable, easy-to-digest tips on how to best care for your HVAC.
So, what does HVAC mean, exactly?
HVAC stands for Heating, Ventilation, and Air Conditioning. When people talk about HVAC, they’re talking about the system that heats, cools, and ventilates their home.
When should I replace my HVAC?
Signs that it’s time to replace yours include unusually high energy costs, frequent need for service, decreased air quality, and uneven heating and cooling, Experts recommend the $5,000 rule: Multiply the cost of the repair by the unit’s age in years. If the result is more than $5,000 then it’s time to seriously consider replacing it.
What is the average cost of an HVAC?
HVAC systems generally range from $5,000 to $20,000, with labor included in that estimate. We know that’s a wide range, but it varies because each home has different needs to consider. Factors can include house size, ductwork updates or replacements, if you want a more energy-efficient system (which may be more expensive but will save you money over time), and the installation costs themselves. It’s recommended that you get several quotes to ensure you understand and can feel confident in the final price you move forward with.
What are the different types of HVAC units?
Some homeowners use boilers or furnaces for heating, but when summer nears, they switch to portable, wall, or window air conditioning units.
Homes with split system central air have indoor and outdoor compression units to distribute both hot and cold air throughout the building year-round. Alternately, package systems contain all components in one outdoor unit.
Geothermal heat pump systems take advantage of naturally occurring heat within the earth, for a more energy-efficient model. According to Energy.gov, they absorb extra heat in the summer and act as a heat source in the winter. This can reduce the energy needed to heat and cool your home, and can also be quieter and lower maintenance than other systems.
What is the HVAC maintenance like?
Keeping your HVAC maintained will keep it running efficiently and extend its life. Homeowners can perform easy HVAC maintenance tasks like changing air filters and cleaning coils, ducts, and vents. A professional inspection once or twice a year will ensure that any more involved maintenance —like checking electrical connections, lubricating moving parts, and checking refrigerant levels—is taken care of properly.
How often do I need to change an HVAC filter?
On average, you’ll probably need to change your HVAC filter once a quarter. However, until you get a gauge on how much your filter is doing, it’s a good idea to check it once a month.
How often do I need to have an HVAC inspection?
Have your HVAC system inspected 1 – 2 times a year. If you live in a place with scorching summers and frigid winters, it’s a good idea to get yours serviced before both seasons to ensure it can keep you comfortable and is operating well.
How do I clean HVAC coils?
Depending on the type of HVAC system you have, it can have one or two sets of coils. Regularly cleaning them will keep your system running as efficiently as possible.
You should always check your specific unit for manufacturer instructions or tips, but here’s the gist: Condenser coils are located in the outside unit. To clean them, turn off your HVAC system and cut off power from the breaker box. Next, unscrew the access panel. Clean out any large debris like leaves and rocks and use a nylon brush to loosen dirt from the coils. Vacuum out as much as you can, apply coil cleaner, and let it sit according to the directions. Finally, spray the unit with water to remove the cleaner and extra dirt. Replace the access panel, restore power, and you should be good to go.
Evaporator coils are housed indoors, and the process to clean them is similar to their outdoor counterparts. Turn off both your system and the power supply, pull out hair and debris, and follow the directions on your coil cleaner. Spray it clean with water, or if you’re in AC season, run it and condensation will take care of rinsing it for you.
How long do HVAC systems last?
HVAC systems typically last for 10 – 20 years. Within that range, your system life might depend on climate, usage, quality, and home size.
Amy Gordon
Amy Gordon is a freelance writer and editor who splits her time between New York, NY and Vieques, PR. When she’s not at her desk, you’ll probably find her on a plane with her nose in a book, in the Caribbean snorkeling through coral reefs, or on the couch watching true crime TV. Learn more and read her work at www.amygordonmedia.com.
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