Cleaning the Coils in Hydo Air units/Air Handlers?

Cleaning the Coils in Hydo Air units/Air Handlers?

PostBy: stoker_RI On: Fri Feb 03, 2012 10:41 am

Hey guys..

I have a couple of Hydro Air units...air handlers with water to air coils in them of course....these same units see year round air flow as they get utilized for my a/c too...Now I change the filters pretty regularly, mostly I had to use a smaller filter than the diameteter needed due to lack of availability..One is 20 x 22..the other is 20 x 25..these seem to be not of the most common sizes, and I never see that size anywhere..

I'm wondering after 15 yrs of use if I should be thinking about cleaning the coils themselves..and if so, how? I believe in the HVAC indusdtry, there IS a spray that is used to clean them off..and no, I don't think it is just compressed air in a can..

Any thoughts? Experiences?

Thanks!
stoker_RI
 
Stove/Furnace Make: Leisure Line
Stove/Furnace Model: WL 110 Boiler

Re: Cleaning the Coils in Hydo Air units/Air Handlers?

PostBy: McGiever On: Fri Feb 03, 2012 10:53 am

Is removing them from duct work/air handler an option?

Are they positioned vertically or horizontally?
McGiever
 
Stoker Coal Boiler: AXEMAN-ANDERSON 130 "1959"
Hot Air Coal Stoker Stove: HARMAN MAGNUM
Hand Fed Coal Stove: RADIANT HOME AIR BLAST
Baseburners & Antiques: OUR GLENWOOD 111 BASEBURNER "1908"
Coal Size/Type: PEA / ANTHRACITE, NUT-STOVE / ANTHRACITE
Other Heating: Ground Source Heat Pump
Stove/Furnace Make: Hydro Heat /Mega Tek

Re: Cleaning the Coils in Hydo Air units/Air Handlers?

PostBy: stoker_RI On: Fri Feb 03, 2012 11:04 am

McGiever wrote:Is removing them from duct work/air handler an option?

Are they positioned vertically or horizontally?


noooo...certainly not the one in the attic anyway...mounted horizontally...Its a bitch enough just getting up there thru the scuttle hole to change the filter!..

The other one is verticle and and in the basesment..much more accessable..IDK...never considered removing the coil...do you know if that is commomly done?
stoker_RI
 
Stove/Furnace Make: Leisure Line
Stove/Furnace Model: WL 110 Boiler


Re: Cleaning the Coils in Hydo Air units/Air Handlers?

PostBy: McGiever On: Fri Feb 03, 2012 11:22 am

Having coils set up for removal for cleaning and left out during cooling season is the choice of some other members here and myself. My install is very new so I haven't got to that point yet, but valves and unions are in place to allow it. :) A fluid cleaning would be tricky with coils in place. :shock:
McGiever
 
Stoker Coal Boiler: AXEMAN-ANDERSON 130 "1959"
Hot Air Coal Stoker Stove: HARMAN MAGNUM
Hand Fed Coal Stove: RADIANT HOME AIR BLAST
Baseburners & Antiques: OUR GLENWOOD 111 BASEBURNER "1908"
Coal Size/Type: PEA / ANTHRACITE, NUT-STOVE / ANTHRACITE
Other Heating: Ground Source Heat Pump
Stove/Furnace Make: Hydro Heat /Mega Tek

Re: Cleaning the Coils in Hydo Air units/Air Handlers?

PostBy: coalkirk On: Sat Feb 04, 2012 8:28 am

After 15 years, especially if you are using a filter smaller than needed, you can bet they need cleaning. You should be able to remove some sheet metal cover from the air handler to gain access to them. I would certainly make that a project for the off season. also you need to get filters that are the right size. It's a waste of time and money to use a too small filter.

My water coil is removable and I take it out at least every other year to clean it. Even with proper filter use, very fine particles find their way to the coils.
Attachments
water to air heat exchanger.jpg
(129.02 KiB) Viewed 17 times
View: New PagePopup • Select:BBCode
[nepathumb]33402[/nepathumb]
coalkirk
 
Stoker Coal Boiler: Harman VF3000
Coal Size/Type: antrhcite/rice coal

Re: Cleaning the Coils in Hydo Air units/Air Handlers?

PostBy: stoker_RI On: Sat Feb 04, 2012 9:42 am

Thanks for the input guys..
Yeesh! One more maintenance thing!..wow koalkirk...never thought it would be affected so much...looks like in your case you at a minimum power washed the coil..I,m sure the intallers didn't provide any means for easy removal..which means I'll have to drain the line...cut the pipe..etc ...I guess that would be the time to maybe put a ball valve and drain near the units? Do u guys do that? And as stated avove..I'd install unions too..
stoker_RI
 
Stove/Furnace Make: Leisure Line
Stove/Furnace Model: WL 110 Boiler

Re: Cleaning the Coils in Hydo Air units/Air Handlers?

PostBy: coalkirk On: Sun Feb 05, 2012 8:51 am

I've got a union on one end and a circulator pump flange on the other. It's pretty easy. You could try to clean the coil in place. Use a paint brush and a vacuum cleaner wand. They make a spray can of coil cleaner also.
coalkirk
 
Stoker Coal Boiler: Harman VF3000
Coal Size/Type: antrhcite/rice coal

Re: Cleaning the Coils in Hydo Air units/Air Handlers?

PostBy: Freddy On: Sun Feb 05, 2012 8:58 am

Take care if you use a power washer. I've seen some that folded the fins with too much pressure. Once bent, they are never quite the same.
Freddy
 
Stoker Coal Boiler: Axeman Anderson 130 (pea)
Hot Air Coal Stoker Stove: Reading piece o' junk in the barn (rice)
Coal Size/Type: Pea size, Superior, deep mined

Re: Cleaning the Coils in Hydo Air units/Air Handlers?

PostBy: coalkirk On: Sun Feb 05, 2012 10:43 am

Very true! Mines a little wimpy electric one, just perfect for cleaning but not too much pressure. some of those gas powered ones will take chunks of wood off of your deck.
coalkirk
 
Stoker Coal Boiler: Harman VF3000
Coal Size/Type: antrhcite/rice coal

Re: Cleaning the Coils in Hydo Air units/Air Handlers?

PostBy: stoker_RI On: Sun Feb 05, 2012 1:11 pm

coalkirk wrote:I've got a union on one end and a circulator pump flange on the other. It's pretty easy. You could try to clean the coil in place. Use a paint brush and a vacuum cleaner wand. They make a spray can of coil cleaner also.


Thanks!..Do you know what the spray cleaner is called and where it is available?
stoker_RI
 
Stove/Furnace Make: Leisure Line
Stove/Furnace Model: WL 110 Boiler

Re: Cleaning the Coils in Hydo Air units/Air Handlers?

PostBy: McGiever On: Sun Feb 05, 2012 1:28 pm

McGiever
 
Stoker Coal Boiler: AXEMAN-ANDERSON 130 "1959"
Hot Air Coal Stoker Stove: HARMAN MAGNUM
Hand Fed Coal Stove: RADIANT HOME AIR BLAST
Baseburners & Antiques: OUR GLENWOOD 111 BASEBURNER "1908"
Coal Size/Type: PEA / ANTHRACITE, NUT-STOVE / ANTHRACITE
Other Heating: Ground Source Heat Pump
Stove/Furnace Make: Hydro Heat /Mega Tek

Re: Cleaning the Coils in Hydo Air units/Air Handlers?

PostBy: stoker_RI On: Sun Feb 05, 2012 2:33 pm

McGiever wrote:http://www.mainsupplies.com/index.php?cPath=60&main_page=index


Thanks!...This forum is the best, isn't it?
stoker_RI
 
Stove/Furnace Make: Leisure Line
Stove/Furnace Model: WL 110 Boiler

Re: Cleaning the Coils in Hydo Air units/Air Handlers?

PostBy: Ops164 On: Tue Feb 07, 2012 8:32 pm

Most of what you buy at the supply house for indoor coil cleaning is more or less 409 spray cleaner. We used to soak the coil in 409, loosen up the matted over stuff with a stiff brush, (brush in line with the fins) and rinsed it off with either a water hose or a low pressure sprayer.

You could install a filter/grille for your second floor unit and save yourself the trouble of getting into the attic for a simple filter change. Also, use the pleated paper panel type filters instead of the fiberglass "horsehair" type. Inspect them at 90 day intervals, replace when you can't see a light thru them. BTW, 20x25 is a very common size, sounds like yo need a new supply house...

Ops
Ops164
 
Stove/Furnace Make: Harmon
Stove/Furnace Model: Mk III

Re: Cleaning the Coils in Hydo Air units/Air Handlers?

PostBy: stoker_RI On: Tue Feb 07, 2012 9:55 pm

Wow! Thanks for the info!

Ops164 wrote:You could install a filter/grille for your second floor unit and save yourself the trouble of getting into the attic for a simple filter change.


I assume that you mean the return registers?...I've often thought of that..but there are 5...and different sizes..also wondered how I would secure the filter...
stoker_RI
 
Stove/Furnace Make: Leisure Line
Stove/Furnace Model: WL 110 Boiler