YSK: You probably don’t need a whole house fan. I don’t…
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YSK: You probably don’t need a whole house fan.
I don’t know why this isn’t ever mentioned, but I was looking at whole house fans for cooling the house off at night without running AC and the savings just couldn’t justify the cost, then I realized there’s a way to use my central system as a whole house fan already. Don’t buy a whole house fan to save money if you have a central return. you can simply open windows and close some doors to make your existing system work like a pump.
To do this, set your thermostat to fan mode and open at least two windows. One window should be in a room connected to your central return vent, and at least one more in a room away from the return with its door closed and a register open. This setup forces the blower to pull cool air in from outdoors, draw it across your entire floor plan, and push it out through the register-side window.
This doesn’t just cool down the air immediately, it also bleeds off all the heat stored in the walls and floor of the house overnight so you’re not starting the next day with yesterday’s heat load.
Because you are pulling in unfiltered outdoor air, check your HVAC filter frequently, as it will clog much faster than usual. Only use this method when the outside air is cooler and drier than the air inside your home to avoid pumping excess humidity into your house. It is a simple, effective way to flush out the day’s heat without the cost of installing new equipment.
Why YSK: you can save some money and electricity by just ventilating your house each night, even if your house doesn’t naturally draft, you don’t need any special equiptment to do it, just a clever configuration with what you already have.
#education
source
I don’t know why this isn’t ever mentioned, but I was looking at whole house fans for cooling the house off at night without running AC and the savings just couldn’t justify the cost, then I realized there’s a way to use my central system as a whole house fan already. Don’t buy a whole house fan to save money if you have a central return. you can simply open windows and close some doors to make your existing system work like a pump.
To do this, set your thermostat to fan mode and open at least two windows. One window should be in a room connected to your central return vent, and at least one more in a room away from the return with its door closed and a register open. This setup forces the blower to pull cool air in from outdoors, draw it across your entire floor plan, and push it out through the register-side window.
This doesn’t just cool down the air immediately, it also bleeds off all the heat stored in the walls and floor of the house overnight so you’re not starting the next day with yesterday’s heat load.
Because you are pulling in unfiltered outdoor air, check your HVAC filter frequently, as it will clog much faster than usual. Only use this method when the outside air is cooler and drier than the air inside your home to avoid pumping excess humidity into your house. It is a simple, effective way to flush out the day’s heat without the cost of installing new equipment.
Why YSK: you can save some money and electricity by just ventilating your house each night, even if your house doesn’t naturally draft, you don’t need any special equiptment to do it, just a clever configuration with what you already have.
#education
source
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