Seer rating on Trane 19i

[rumn8r]

Can someone please tell me what the SEER rating is for Trane 19i air conditioners (both 3T and 5T) when used with Trane VS furnaces?

[duct dr]

19 - 19.5 SEER. IF installed properly.

[direct hvac]

it must be installed properly with the right furnace,coil and all the right components to reach 19 seer.

[NormChris]

The actual operating SEER after installation can easily drop to half the rated SEER if the product is poorly applied, incorrectly installed, has incorrect airflow, is improperly adjusted and incorrectly charged.

[mark beiser]

With a straight cooling outdoor unit, furnace and coil the 3 ton XL19i is 15.5 to 18.5 SEER, depending on wich furnace and coil it is matched with. A 5 ton ranges from 15.5 to 17 SEER.

[mark beiser]

Originally posted by duct dr
19 - 19.5 SEER. IF installed properly.


Originally posted by direct hvac
it must be installed properly with the right furnace,coil and all the right components to reach 19 seer.

There are no XL19i matchups that are higher than 18.5 SEER using a furnace and coil.

[rumn8r]

Mark,

Are they at the high end of the range given when matched to the Trane XV90 furnaces?

Also, did you see my posting at 10:45 am this morning?

rumn8r






Originally posted by mark beiser
With a straight cooling outdoor unit, furnace and coil the 3 ton XL19i is 15.5 to 18.5 SEER, depending on wich furnace and coil it is matched with. A 5 ton ranges from 15.5 to 17 SEER.

[NormChris]

You also have to ask yourself if the premium price you are going to pay for that high of a SEER rating will every pay for itself in the reduced energy costs.

And, that is assuming the actual installed SEER is as high as the rated SEER.

With high SEER equipment you will want to be real sure that the contractor does quality work and has correctly applied the product.

[mark beiser]

rumn8r,

The furnace isn't the bigest factor in the matchup, since the XL19i should always be matched with a variable speed indoor unit. The cooling performance and SEER would be the same with an XV80 or XV90. The size of the furnace has a slight impact on it because the blower has to work harder to move the required cooling airflow through a narower furnace than it does through a wider furnace.

The coil it is matched with has more effect on the SEER.

Need model numbers...

In my area, we hardly ever install an XL19i system that has a SEER rating higher than 17. Our heating needs are so little that we are generally using the smallest capacity furnace that gives us the cooling airflow we need, and matching a coil that gives the system good latent capacity to control humidity.

We don't sell XL19i systems based on energy savings and payback, we sell them based on comfort.

[tranedog]

Mark is CORRECT. If you want higher SEER rating use the the XL19i Air Conditioning Condenser (2TTZ90) with a Heat Pump Air Handler (TWExxxE13FB) NO ELECTRIC HEAT STRIPS but with a Hydronic Heat Coil for Heat (Which is sold through your Trane DSO). Use your Gas (sinse you have gas available, sinse you are think of a XV80 or XV90 Furnace, Domestic Water to Heat your Hydronic Coil or Use a seperate heater like a tankless heater.

[rumn8r]

Tranedog,

I also have a boiler that I am replacing with a Weil McLane Ultra modulating condensing boiler. I have thought about doing as you suggest with variable speed air handlers. Will off-the-shelf Trane controls work?

[tranedog]

Yes with some little Control additions and modification nothing too complicated.

[duct dr]

Originally posted by mark beiser

Originally posted by duct dr
19 - 19.5 SEER. IF installed properly.


Originally posted by direct hvac
it must be installed properly with the right furnace,coil and all the right components to reach 19 seer.

There are no XL19i matchups that are higher than 18.5 SEER using a furnace and coil.


Sorry Mark, I didn't catch where he said Furnace. must have read it too fast.

[docholiday]

Sticking a hydronic coil on it would eat valuable SEER. not in a rating because it's not rated with a HW coil. Adding it will not hurt but you can count on it testing out about the same as a 90 plus furnace with a coil. The secondary HX or a similar HW coil requires more blower watts.

You need to specify which furnace, which coil and which outdoor unit if you want any factual information. Pay some attention the the EER if you run full load often.

[mark beiser]

I saw an installation that has the hot water coils installed on sliders with flexible water lines. During the cooling season the homeowner opens a little door on the supply plenum, slides the hot water coil out and closes the door. Kind of a cool setup.

[docholiday]

I too have seen jobs where this was done, the reason is because the coil restricts the airflow so much on a marginal duct system that the cooling wouldnt work right otherwise. A properly designed duct system it will work, but as I mentioned, the power usage will increase.