Timeline for Will closing some hvac vents cause blower motor to use more electricity? [closed]
Current License: CC BY-SA 3.0
12 events
| when toggle format | what | by | license | comment | |
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| Mar 8, 2020 at 0:20 | comment | added | Bitbang3r | If the air handler's blower motor is an ECM (most variable-speed blowers ARE), it will try to maintain a constant CFM regardless of static pressure... so closing half the registers while everything else remains constant will just result in the blower working even HARDER to shove the same total CFM through the half that are still open (faster air, smaller cross-section area). The rooms with open registers will get colder than the rooms with closed registers, but your thermostat will probably make inappropriate control decisions unless it's physically IN one of those now-colder rooms. | |
| Jul 17, 2017 at 15:05 | comment | added | Voltage Spike♦ | It's warmer in June unless your in the southern hemisphere | |
| Jul 17, 2017 at 4:50 | review | Reopen votes | |||
| Jul 17, 2017 at 15:05 | |||||
| Jul 17, 2017 at 1:18 | history | closed |
uint128_t user39382 user80875 DoxyLover Wesley Lee |
Not suitable for this site | |
| Jul 16, 2017 at 23:44 | answer | added | Glenn W9IQ | timeline score: 3 | |
| Jul 16, 2017 at 23:05 | comment | added | DoxyLover | This is really off-topic for this board. Try diy.stackexchange.com. | |
| Jul 16, 2017 at 22:27 | review | Close votes | |||
| Jul 17, 2017 at 1:18 | |||||
| Jul 16, 2017 at 22:17 | comment | added | horta | More significant is that your a/c may struggle to get the cool air out into your apartment and may end up blowing it out cracks in poorly sealed vents due to the added backpressure. The blower takes a fraction of the power to run compared to the rest of the a/c system. You don't want to waste that precious cold air. | |
| Jul 16, 2017 at 22:13 | comment | added | user57037 | No, blower motors use less electricity when there is more back pressure. Of course, they blow much less air, also. | |
| Jul 16, 2017 at 22:11 | comment | added | Transistor | Measure it! Time the pulses on your utility meter in both conditions with everything else turned off. | |
| Jul 16, 2017 at 22:09 | review | First posts | |||
| Jul 17, 2017 at 1:22 | |||||
| Jul 16, 2017 at 22:09 | history | asked | Harvey | CC BY-SA 3.0 |