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Old 01-19-2019, 11:30 PM
 
Location: Queen Creek, AZ
7,302 posts, read 12,221,385 times
Reputation: 4792

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https://www.achrnews.com/articles/13...mutated-motors

Looks like the DOE is setting new efficiency standards on furnace motors, and it looks like furnaces will require ECM motors. This could be either a fixed speed X13 motor or a variable speed motor. This not only increases the efficiency of the blower itself, but if attached to an air conditioner increases the SEER of the air conditioner.

Note that this rule excludes heat pump air handlers.
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Old 01-20-2019, 07:09 AM
 
Location: The Triad
34,090 posts, read 82,517,928 times
Reputation: 43648
Quote:
Originally Posted by Pink Jazz View Post
This could be either a fixed ...
It's a fix alright.
forcing 25X more in equipment and service cost than might be saved in use cost
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Old 01-20-2019, 08:51 AM
 
Location: Placer County
2,512 posts, read 2,733,834 times
Reputation: 6526
I've been contemplating replacing my nearly 20 y.o. HVAC system before summer. Heat is fine, A/C has issues and appears to be at end-of-life. So should I get it done before this new spec? What do you experts think? BTW, I do have a trusted HVAC company but I always like to be informed so I can discuss these things intelligently with them. Thanks in advance for your thoughts.
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Old 01-20-2019, 09:42 AM
 
Location: Queen Creek, AZ
7,302 posts, read 12,221,385 times
Reputation: 4792
Quote:
Originally Posted by movinon View Post
I've been contemplating replacing my nearly 20 y.o. HVAC system before summer. Heat is fine, A/C has issues and appears to be at end-of-life. So should I get it done before this new spec? What do you experts think? BTW, I do have a trusted HVAC company but I always like to be informed so I can discuss these things intelligently with them. Thanks in advance for your thoughts.
Remember though that with ECM blowers your cooling SEER will be greater than with a standard PSC blower.
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Old 01-20-2019, 09:57 AM
 
Location: Placer County
2,512 posts, read 2,733,834 times
Reputation: 6526
Good point. Higher efficiency is a very good thing. Whichever way I go I'm expecting that there will be a positive impact on my utility bills. Thanks!
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Old 01-20-2019, 11:19 AM
 
105,811 posts, read 107,799,717 times
Reputation: 79425
Quote:
Originally Posted by Pink Jazz View Post
Remember though that with ECM blowers your cooling SEER will be greater than with a standard PSC blower.
they also keep the humidity at a comfortable level .... they run at low speed early on letting the coil pull a lot of moisture out of the air , then they ramp up to cool that air .
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Old 01-20-2019, 11:50 AM
 
41,815 posts, read 50,811,595 times
Reputation: 17863
Is the efficiency of the motor itself greater or how it's utilized?
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Old 01-20-2019, 11:59 AM
 
Location: Aurora Denveralis
8,712 posts, read 6,675,384 times
Reputation: 13502
I don't see anything in that article but vague assertions about the actual increase in cost. I'm not sure manufacturers having to abandon $50 Chinese-made motors with efficiency stuck somewhere in the 1950s is a bad thing, not for an appliance found in every home and building in the US. I'd also suspect that immediate cost levels would decline as the market for a specific subset of the market spikes and then replaces the older design.
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Old 01-20-2019, 12:15 PM
 
Location: Berkeley Neighborhood, Denver, CO USA
17,674 posts, read 29,584,857 times
Reputation: 33222
This is similar to Bush's light bulb regulations.
I am stocking up on traditional motors.
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Old 01-20-2019, 12:20 PM
 
Location: Aurora Denveralis
8,712 posts, read 6,675,384 times
Reputation: 13502
Quote:
Originally Posted by davebarnes View Post
This is similar to Bush's light bulb regulations.
I am stocking up on traditional motors.
I'll take that as humor, but I don't see anyone banning brush motors. Just not allowing them in new HVAC installations. The motors now used are everywhere in appliances and light industrial equipment; they are not as universally replaceable with an arbitrary alternative as light bulbs.
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