radiant floor heating

Unknown

You need to be careful with log homes. They can be hard to get tight, and require diligent maintenance to keep them tight. As such, they may have loads that are high enough to push radiant pretty hard.

Be sure to use a good method of installation for the distribution (heavy aluminum, concrete, etc), make sure a load calc is done to identify any areas that might be borderline as well.

Chances are your load will be enough that an on demand water heater would not be an attractive choice from an efficiency standpoint. I agree with HR that a mod/con boiler is most likely a better choice.

alwaysworkin'

radiant floor heating

I'm starting to plan my retirement house and will be building a 1600 sq foot log cabin.I'm sold on radiant floor heat,but this one is for me.Has anyone installed any with the on demand water heaters?Iplan to install solar as well,but that's down the road .I am installing a separate water heater for domestic use.Thanks for the help.

hr

Sounds like a perfect project

for a modulating condensing hydronic boiler. Consider one with an onboard DHW feature. You will get better efficiency, and a product listed and approved for the nuse you describe.

Standard features on most include DHW priority, outdoor reset for the heating function, self diagnostic, data logging, extended warranty options on most, sealed combustion, need I say more

Good luck on your project, build a tight energy efficient structure with adequate IAQ features, possibly a heat recovery unit if the construction is tight. Don't forget radiant shower walls, heated towel bars, and other hydronic novelties.

hot rod

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Simply Rad_2

Viessmann Combi boiler

I had the exact situation with a cabin. The Viessmann Vitodens combi boiler is the perfect solution. First with a cabin you want realiability, cause when you have trouble your a long ways out. Second the boiler will heat your home and hot water. The boiler uses an internal heat exchanger and produces hot water ONLY when needed. The boiler has on onboard pump so the install will be very simple and the end result is comfort and efficiency. Also, the boiler is wall hung for a closet install since you probably have little room in the cabin for a mechanical space. The boiler will be the best-simple yet elegant comfort. You will never want to leave, maybe even change your name to never workin.
Good Luck Jeffrey

Simply Rad_2

Electricity

Word to the wise. One thought about power and remote home sites. Solar and generator power CAN create problems with the elctronic controls of ANY mod/con boiler(high efficiency). If you have grid power do not worry.
Jeffrey