Search: Posts Made By: user 10
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08-03-19, 01:32 PM
Replies: 10
Views: 460
Posted By user 10

The motor amperage draw goes up exponentially as...

The motor amperage draw goes up exponentially as you increase the rpm.

This is because velocity energy is the square of velocity (e = 1/2mv^2) and resistance to flow increases as you raise the...
07-19-19, 05:01 PM
Replies: 30
Views: 1,079
Posted By user 10

While sizing be square footage isn't ideal by a...

While sizing be square footage isn't ideal by a long shot, you're very unlikely to get a grossly oversized unit when size is based on one ton per 1000 sq ft.

sq ft per ton in ontario canada for a...
07-09-19, 06:46 AM
Replies: 10
Views: 955
Posted By user 10

Contractors can inflate repair costs to make...

Contractors can inflate repair costs to make replacement more attractive.

It doesn't really make sense to spend more than 50% of the installed cost on repair - that's if it's like 10 to 12 years...
07-08-19, 05:22 PM
Replies: 10
Views: 955
Posted By user 10

High and mid efficiency units are equipped with...

High and mid efficiency units are equipped with the same controls and primary heat exchanger.

The board won't last any shorter in high than mid.

It shouldn't cost $1000 to replace a control...
07-06-19, 09:46 AM
Replies: 8
Views: 905
Posted By user 10

With the tape there it's hard to tell if the...

With the tape there it's hard to tell if the return drop is properly connected to the filter holder.

There should be a cover for the filter holder - if it's nowhere to be seen you can tape over...
07-04-19, 10:23 AM
Replies: 26
Views: 1,030
Posted By user 10

This is a lie, most of the parts are generic and...

This is a lie, most of the parts are generic and readily available.
07-04-19, 10:17 AM
Replies: 5
Views: 449
Posted By user 10

Is the a/c blowing out warm air? I suspect...

Is the a/c blowing out warm air?

I suspect you have electric heat stuck on - could be a bad sequencer or something else.
06-28-19, 11:48 AM
Replies: 26
Views: 1,030
Posted By user 10

Sealants aren't good for equipment especially...

Sealants aren't good for equipment especially when there's moisture in the system.

--------------

The contractor should be able to find the leak.

Could even be a shrader valve or service...
06-28-19, 10:02 AM
Replies: 5
Views: 921
Posted By user 10

The infinities have always been variable speed, ...

The infinities have always been variable speed,

Variable speed simply refers to the type of blower motor. The blower automatically compensates for duct pressure to maintain proper airflow in each...
06-11-19, 12:43 PM
Replies: 15
Views: 874
Posted By user 10

an el-cheapo superboost is under $20, give it a...

an el-cheapo superboost is under $20, give it a try even if a bad start winding is suspected.
05-12-19, 01:08 PM
Replies: 15
Views: 355
Posted By user 10

A leak test has to be done - you can change the...

A leak test has to be done - you can change the air handler with the leak is in the outdoor unit and end up with the same problem.

A new air handler can be matched with an old outdoor unit...
05-09-19, 09:23 PM
Replies: 2
Views: 281
Posted By user 10

The lines are always pressurized with refrigerant...

The lines are always pressurized with refrigerant so if the pipe was damaged the refrigerant is already gone.

Go ahead and turn it on provided it's at least 65f outside, see if it still cools.
...
05-09-19, 03:47 PM
Replies: 8
Views: 438
Posted By user 10

Find another contractor, 1500 to run some pvc...

Find another contractor, 1500 to run some pvc pipe is absurd. They'll bullcrap you just to get away with doing less work and move on to the text customer.

Mid efficiency is pretty much obsolete...
05-08-19, 09:09 PM
Replies: 8
Views: 438
Posted By user 10

80% refers to the percentage of heat the furnace...

80% refers to the percentage of heat the furnace produces which actually heats the house. 20% gets wasted up the chimney.

A modern high efficiency unit which starts at 92% wastes under 10% of the...
05-08-19, 04:07 PM
Replies: 8
Views: 438
Posted By user 10

What kind, size and age of house do you have?...

What kind, size and age of house do you have? Where are the ducts located?


5 ton and 110k is a lot. Do not assume what you have now is correct.

It's more important to use a contractor who...
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