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-   -   How to save HVAC? (http://www.diychatroom.com/f17/how-save-hvac-120311/)

ccpyue 10-16-2011 05:18 PM

How to save HVAC?
 
Need professional advise: I live in a two storage house. Four bedrooms in upper floor. Two of the rooms I never use. Is it wise to close all these room's air outlets and close their door and can this save heat in winter, and air condition's electric in summer?

hvactech126 10-16-2011 05:41 PM

no, that will not save on your heat or electric.

stanlam 10-17-2011 01:02 AM

I have been doing this for years. Logically it has to save money on your utility bill. It will obviously make the rooms with the vents 'open' heat up or cool down faster, which will make the heater or A/C not turn on as much, which will lower your utility bill.

REP 10-17-2011 02:22 AM

In theory it should.In real life it will only make the furnace and a/c work harder,so its not a good idea.
It could, with some variables actualy increase your bills.
The best way to save money bar none others is to have your equipment sized correctly for your house.
This in itself might cost you something but it is still a bargin and well worth it.
If new equipment is out of the question then now is the time for more insulation and caulking.These too will pay for themselves.

ccpyue 10-17-2011 09:35 AM

What I just think is if I reduced the volume, house will heat up quicker and furnace will stop quicker.

By the way, the thermostat must have a sensor, where is it located? As when the sensor sense that the temperature reached what I've set, it will stop, isn't it?

Thanks.

gregzoll 10-17-2011 09:46 AM

Quote:

Originally Posted by ccpyue (Post 749994)
Need professional advise: I live in a two storage house. Four bedrooms in upper floor. Two of the rooms I never use. Is it wise to close all these room's air outlets and close their door and can this save heat in winter, and air condition's electric in summer?

The way to save money, is making sure that your structure is air tight and properly insulated. If you have single pane or older double pane windows, upgrade them. If you have a door that allows air to leak through around the edges, use weatherstripping to seal. if the door is not a insulated door, replace.

Set the thermostat to something like 68 when home, 62 when away or in bed for Winter, 75 if comfortable during the Summer when home, and 78 when away. A lot has to also do with how much your utility charges you for use of their services.

ccpyue 10-18-2011 05:02 PM

Quote:

Originally Posted by gregzoll (Post 750472)
The way to save money, is making sure that your structure is air tight and properly insulated. If you have single pane or older double pane windows, upgrade them. If you have a door that allows air to leak through around the edges, use weatherstripping to seal. if the door is not a insulated door, replace.

Set the thermostat to something like 68 when home, 62 when away or in bed for Winter, 75 if comfortable during the Summer when home, and 78 when away. A lot has to also do with how much your utility charges you for use of their services.

Thank you for the advise, will try to follow.:thumbup:

gregzoll 10-18-2011 06:03 PM

Quote:

Originally Posted by ccpyue (Post 750465)
What I just think is if I reduced the volume, house will heat up quicker and furnace will stop quicker.

By the way, the thermostat must have a sensor, where is it located? As when the sensor sense that the temperature reached what I've set, it will stop, isn't it?

Thanks.

Closing vents, is not going to reduce the volume of the house. What happens, is when you close vents, the system has to work harder to pull air through the cold air returns up on the second floor, so that the heat or ac will keep the environment equal. The thermostat sensor is in the thermostat.

Now, what you could do, which is a pricy investment up front, is go with something like the prilophix thermostat, that uses remote sensors, and you can monitor either through a third party site like ourhomespaces.com, or monitor at home. The main question is, how old is the hvac system, is it a 80%, 90 plus, does it have a heat pump, or conventional a/c.

Also, another thing you can do, is get a weather station that allows you to use remote sensors to measure humidity and temp throughout the house. Contact your utility to see if they do home energy audits. Our city owned charges $50 to do the audit. We just had a powered roof vent added, due to over the Summer, we would see attic temps up around 130, even though outside at the peak was around 94-96. It will defiantly make a difference next Summer, along with helping with running the a/c. They start running when the temp gets to 110, and shut off at 85, but helps overall.


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