Fulford HVAC is dedicated to saving you money and providing the best in customer service. We are your HVAC partner, but we also do energy audits to determine your best efficiency. This blog will take a look at adding insulation to your walls to lessen costs.
The answer is yes, but not as much as many would have you think. This is a very brief answer, so the actual answer will be the remainder of this blog.
Insulation reduces heat flow – this is its purpose. How much does it impact the heat flow into your home in the summer? Is this the best way to reduce cooling costs?
More wall insulation seems to make sense. In the north, where heating is more important than cooling, absolutely this is the case. This is not the same in the south with warmer summers.
The difference is how heat moves in the two climates.
Heat moves in three ways – radiation, conduction and convection. Radiation is the sun’s heat; conduction is the heat generated by a stove; convection is the hot air in the oven. Make sense?
Here in N.C., air conditioning works to maintain temperatures when the hottest day of the year may break 100 degrees. Conduction heat loss – movement across a wall – is driven by the temperature difference. What does this mean? It means if you live in a northern climate – insulation is more important.
Insulation down south is important in the attic. Attics can break 130 degrees in the dead of summer. This means attic insulation is vital.
Wow. This is a lot to digest at one time. Let’s see if we can simplify what we are saying here. Basically, it all comes back to that huge ball of burning flame in the sky.
The sun is the factor in heating and cooling. In N.C. radiation pours into the windows and increases the air temperature in the home, and this makes the a/c unit work harder to cool the home.
So, while adding wall insulation is not really feasible, there are other things you can do. Adding shade trees at south facing windows, build overhangs and put in dark curtains with white facing out to reflect radiation from entering the home.
Call us at Fulford HVAC is we can help you with an energy audit. We look forward to helping you save money.