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HVAC Terminology 101

Many homeowners are blissfully unaware of the work of their hvac system – and how it keeps them and their families comfortable- until there is a problem. And if you find yourself in that situation, it’s not the best time to learn some basic information that might help you get some relief faster (whether that’s heat in the winter or cool air in the summer).  Accurate Electric Plumbing Heating and Air Services is happy to educate Glendora homeowners on the basics.


Let’s cover some HVAC vocabulary today:



Do you know what HVAC stands for? Heating, ventilation, and air conditioning!  Your HVAC system does way more than operate your heater or air conditioner. HVAC companies cover most issues concerning the comfort of your home. HVAC technicians are trained to repair all different types of systems. Whether you have a ductless system, a heat pump, or even window units in your home, the term “HVAC” covers all the above. 


Heat Pumps
Heat pumps are becoming more popular throughout Pasadena, California and surrounding areas as they provide heating and cooling for homes year round that’s ideal for milder climates. They work by extracting the heat from the outside in winter and reverse the process by removing heat inside the home in the summer. They are extremely energy-efficient in that instead of generating heat (like a central air system) they move it. This makes them ideal for the mild La Puenta winters. Take note if your home already has a heat pump or a central air system.


The ductwork in your home evenly spreads warm and cold air throughout your home — instead of heating or cooling just one or two rooms. Although ductwork can be found in most homes, some people are opting for ductless systems, which put individual systems in different rooms. Depending on the climate, a ductless system may be a more efficient option for some families. 


BTU (British Thermal Unit)
A measurement of energy (heat) used to indicate the rate of cooling, dehumidifying, or heating in an HVAC system. One BTU is the amount of energy needed to raise the temperature of one pound of pure water by one degree Fahrenheit.



The controller (or sometimes more often referred to as the thermostat) is the device that controls the operation of all (or part) of an HVAC system. It might turn a device on and off, or it may dictate the desired setting and temperature of your home. 

Energy Star

If “going green” is important then having Energy Star appliances is a big part of that. Energy Star is a program developed by the Environmental Protection Agency that aims at lowering our carbon footprint. If an appliance is labeled Energy Star, that means it meets certain benchmarks set by the EPA. Energy Star appliances help to save energy, which in turn saves you money on your monthly utility bills.


Indoor Air Quality (IAQ)

This measures how clean your air is inside your home. Most people don’t give much thought to it, but poor IAQ can have significant health consequences. Accurate Electric Plumbing Heating & Air’s certified professionals can test your home’s IAQ and make suggestions for improving it. These recommendations may include regularly dusting and sweeping, opening the windows when the weather is mild, regularly changing your air filters, and having your HVAC system maintained regularly. 


Now that you know some of the main words, don’t forget about maintenance of your unit. You are more likely to forget you even have an HVAC unit when you give it the proactive maintenance it needs. Our expert, on-time technicians here at Accurate Electric Plumbing Heating & Air will check and calibrate thermostat settings, inspect electrical controls and settings, check gas connections, and much more to ensure your HVAC system continues to run efficiently for years to come. And the good news is the benefits are more than just sitting and sleeping comfortably at home no matter the temp outside.

The Benefits of Our Annual Heating Maintenance:

  • Lower Utility Bills
  • Extended Unit Life
  • Avoidance of Major Repairs
  • Maximum Performance
  • Superior Air Quality
  • Clean Project Area
  • Peace of Mind


Accurate Electric Plumbing Heating & Air has been providing HVAC services to Glendora and the surrounding area for over 20 years. Our staff is committed to excellent service and all of our services are guaranteed. Don’t wait for a problem with your HVAC unit to call Accurate Electric Plumbing Heating & Air. Reach us at 626-495-3046 or visit to schedule an appointment.