Polaris Or Boiler?

Al Letellier_9

As in Maine, the Polaris is not a legal installation in some states. You must separate the domestic water from the heating water. Check your local codes on this issue.

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Dolittle

Need advise on what to use for heating the water in a new house with radiant floor heat. Only interested in 90% and was going to use the Polaris water heaters but have read some posts saying they were having problems with them.
Thanks for any help.

Ken_40

If you already have radiant...

There must be a boiler somewhere involved?

Why not simply use the heating boiler and connect it with an indirect domestic hot water maker? Typically, add a dedicated zone to what's there, install some form of D/H/W prioritizer, and let 'er rip?

Unknown

The Polaris can stack up favorably in efficiency to a conventional boiler, though I don't buy its efficiency rating as listed. They must be run at 140-160 to avoid condensing or they will short out their igniters on a regular basis, which means it's not condensing, which I believe means it's not running as efficiently as it should.

For the price, you can get a modulating/condensing boiler that will do a much better job. The Polaris is completely obsolete in my book, now that we have mod/cons. the mod/con will also be silent, which the Polaris most definitely cannot claim.

Ragu_5

Mr. Dolittle...

I would suggest that the advice given by NRT. Rob and Al Lettelier are (is?) right on the money. Mod/Cons were not around when the Polaris came on the scene. As far as I know, NONE of the Dual-Purpose Heating/Domestic Water Heaters have passed muster over the course of time. Please look at what is out there TODAY. Good luck.


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hot_rod

I've had good luck

with polaris and external HX. Running 140 DHW and a flat plate for raiant.

Think I would look into the hew HTP Voyager tank with internal HX and 925 burner. A much better match and designed and listed for your use.

I've heard the BW CombiCor has been re-worked with a large steel coil. Less $$ but not quite as efficient as a condensor.

hot rod

Dolittle

Thanks for the help, this is in a new house. Sounds like most think the mod boiler would be the way to go. There will be several sq. ft. of laminate wood flooring and I need some idea of how hot it can be but it sounds like the Polaris would be a bad choice. The boiler is for radiant only.

Darrell

Any parts for the Polaris are ridiculously high priced...so much so that I can't get a parts house to carry them...so if it quits...parts are at least next day air freight from the factory...which here in Alaska means 2-3 days of shivering.

Bob Sweet

Another option

might be one of the combo boilers that are being offered by a few manuf. These are H stamp certified boilers incorporating a flat plate HX for domestic hot water production. Flow requirements on the domestic side are limited (between 3 and 4 gpm), however with a little conservation of hot water needs, these boilers are very cost effective.

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