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Lowering home cooling costs

Jim_S

Gone But Not Forgotten
GOLD Site Supporter
Email from my former electricity provider in VA -

MANASSAS, Va. -- Northern Virginia Electric Cooperative offers 10 ways to lower home cooling costs during the COVID-19 pandemic and a fluctuating economy.

"The pandemic has disrupted almost everything this year, but one thing is for sure: People are still using a lot of electricity to keep their homes, offices, and businesses comfortably cool this summer," says Libby Gooden, a NOVEC energy services specialist. "NOVEC customers set an all-time record for electricity use on July 6. We want to help everyone control costs as heat and humidity soar."

NOVEC's 10 Cooling Tips

Turn the air-conditioner thermostat up to 75-78 degrees or higher. Run ceiling and floor fans in occupied rooms to help room occupants feel cooler. Keeping fans on in unoccupied rooms only increases electric bills. Run ceiling fans counterclockwise to force air down and provide a windchill effect.
Use fans instead of air conditioning. If not running an air conditioner, run a whole-house or window fan upstairs with windows open on the main floor. Make sure a window fan pushes air outside instead of pulling hot air inside.
Replace air-conditioner filters regularly, according to the manufacturer's instructions. Write the installation date on the filter. A dirty filter makes a unit use more energy.
Keep the area around the outdoor air-conditioner unit free of overgrown plants and anything that hinders the unit's efficiency.
Look for the ENERGY STAR label when buying an air conditioner, ceiling fan, and light bulbs. Save 6% by shopping during Virginia's sales tax holiday Aug. 7-9. Look for a high Seasonal Energy Efficiency Rating (SEER) when purchasing a central air-conditioner. The higher the SEER, the less energy the unit will use.
Block solar heat by closing window treatments during the day on sunny sides of the house. Layer treatments -- close curtains over blinds or shades. Window awnings work best since they repel solar heat before rays reach windows.
Close storm windows and lock main windows when using air conditioning. If need be, apply caulk and/or weatherstripping around windows and doors to keep hot air from infiltrating inside.
Close a fireplace flue damper and glass doors. Hot air rises, but some hot outdoor air can come down an open chimney and some cooled indoor air can escape up it.
Replace incandescent light bulbs with LED bulbs. Old-fashioned incandescent light bulbs give off 90% of the energy they consume as heat. LED bulbs produce almost no heat, use 80% less energy than incandescents, and last much longer.
Cook with a microwave oven instead of a regular oven or grill outdoors to avoid creating a hot kitchen.
Find more energy-saving ideas at www.novec.com/save.
 

bczoom

Super Moderator
Staff member
GOLD Site Supporter
I'll just leave my A/C on at 70°. ;)
We have a multi-level house so it's colder in the lower levels. I'm sitting in my office and it's a beautiful 62°. :)
Our A/C has been running almost constantly during the day as it's 90°+. Even so, the 5-ton heat pump plus the air handler only uses around $1 per day. I'm not going to turn down my A/C usage to save 50-cents per day.
 

Melensdad

Jerk in a Hawaiian Shirt & SNOWCAT Moderator
Staff member
GOLD Site Supporter
I'll just leave my A/C on at 70°. ;)
We have a multi-level house so it's colder in the lower levels. I'm sitting in my office and it's a beautiful 62°. :)
Our A/C has been running almost constantly during the day as it's 90°+. Even so, the 5-ton heat pump plus the air handler only uses around $1 per day. I'm not going to turn down my A/C usage to save 50-cents per day.

We run ours on 70 too.

My biggest problem is that the west wall of my house has 28 windows, fairly large windows too. I get solar gain through those windows in the summer and its difficult on a hot & sunny days for the AC unit to keep up with the solar gain. Even with high efficiency windows that also have solar film installed. We tend to leave the window shades down in the afternoon.

The house is 3 stories, with a big open foyer from the basement to the top floor so air stratification is an issue. To help with that I also have some booster fans in the ductwork for some of the upstairs rooms, including boosting the return vent line too. Those help to even out the temps.
 

mla2ofus

Well-known member
GOLD Site Supporter
In our dry climate our swamp cooler works great. 71* in the house right now and 86* outside. W/ a 1/3 HP motor running the fan on low I'm sure it doesn't use much elec. I know you folks back east can't use one.
 

Bannedjoe

Well-known member
I guess I must be doing it wrong.
I never push the hot air at the ceiling level downwards with my fan.

I have a window AC unit that croaked a few years ago.
I broke down and bought a new one at Hose Depot.
It's supposed to be delivered to the store tomorrow.
 

NorthernRedneck

Well-known member
GOLD Site Supporter
We've learned that we have to keep ours set at 68 to have a fighting chance at keeping a fairly cool main floor during the summer months. We have a whole wall of windows facing west getting the afternoon and evening sun. At that, afternoon and evening inside temperatures get up to 75-6 even with it set at 68. So any higher setting (we tried)and it gets up over 80.

Our ac unit is too small for this house and runs pretty much nonstop morning to night to maintain.
 

Melensdad

Jerk in a Hawaiian Shirt & SNOWCAT Moderator
Staff member
GOLD Site Supporter
...

Our ac unit is too small for this house and runs pretty much nonstop morning to night to maintain.

Mine is too. But just barely. And only really a problem on bright sunny days.

The in-duct fans helped us substantially when I installed those. Over the last year I've replaced a couple. The new ones have a remote to control the fan speed, which is a nice feature. Not sure if you have cooler rooms but if you do, duct fans for the warmer rooms might help even things out.

Realistically a dual furnace, dual AC system is the best answer. Probably could be more efficient overall, but at a cost of redoing all the ductwork . . . and that is easier said than done!
 
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