Why You Need the Right Size AC Unit
You might think that choosing a new AC unit is as easy as pie (er, porridge?) when an HVAC contractor tells you their size suggestion, but getting a correctly sized AC unit is not as easy as it may seem- HVAC contractors will frequently take shortcuts by trying to use “rules of thumb”, or calculations based on limited information like the square footage of your home, which very often force you, the homeowner, to end up with an incorrectly sized unit.
Most units sized wrong end up being too large for the home, but units that are too small happen too. People (sometimes even HVAC contractors!) can often make the assumption that “bigger is better”, meaning a larger unit will be more efficient and save more energy, but this is far from the truth. Whether it’s too big or too small, an AC unit that’s the wrong size wastes energy and raises your bills.
Too big, too small, or just right… Looking at AC units can have you feeling a bit like Goldilocks. And if you have the wrong size AC unit, the sight of your frightening electricity bills might just get you to run screaming.
What can happen when your AC is not sized correctly:
• Shortened lifespan
• Cycles on/off more frequently than right size unit
• Can cause humidity indoors – which can lead to mold!!
• More expensive to buy, maintain, and use
• Large temperature swings
• Continuously runs
• Possibly not enough to fully cool house
• Warmer indoor temps overall
• Often overworked system
PROBLEMS OF BOTH:
• Longer run times
• Higher electricity costs
• Higher maintenance costs
• Excess noise
• Higher chance of system breaking
Before installing any new AC Units, you should be absolutely sure that your HVAC contractor did their calculations with a Manual J Load calculation.
At Green ID, our job is to make sure your AC unit is up to par. With our help, your air conditioning could feel juuust right. Call us today at (602) 926-1650.
3/11/2021 10:23:42 am
It was helpful when you explained that a too-big air conditioner will cycle frequency and therefore not last as long. My sister and her husband mentioned they want to have a large air conditioning system installed for their home to keep it comfortable this summer. I'll share this info so they can work with an HVAC contractor to find the right size AC unit for their home instead of just picking a big one.
Your comment will be posted after it is approved.
Leave a Reply.
Sign Up For Your Home Energy Audit
FIND YOUR HOME TYPE
Single Story, Spec Homes
Two Story, Spec Homes
Pre-1990 Custom Home
Post-1990 Custom Home
Don't See Your Home? Find Your City Below!
©2009 – 2023
All Rights Reserved