Not an expert by any stretch, but if it does fire up and it's still covered, wouldn't that potentially interfere with the exhaust? Not sure you would want to do that.

I would think the tankless would be fine and I'd be concerned about covering a gas appliance with anything.... Assuming yours is gas....

I lived in The Villages for 18 years. I never covered the outside faucets and did not have a problem. Had several winters with a hard freeze daily forecast.

Will the strong wind blow the spigot off? 🌪️

No, but every time I have experienced a pipe freezing, which has been a few, there was a cold wind blowing against the pipe or the building wall where the pipe penetration was not properly sealed to prevent air from seeping into the wall.

Also, convective heat transfer works faster than inductive heat transfer. It is the concept behind convection ovens.

Outside house faucets, no. Cover pool piping, yes.

Faucets, no. I cover my plants and run my pool solar.

I always cover my spigots with the styrofoam covers. The more important thing to do is to remove a hose from the spigot, this is the 1st part that will freeze. In the north, they put in freeze proof spigots that stops the water well within the wall so they won’t freeze, they don’t do that here.

Foucet
 

Another reason we moved from New England, worrying about frozen pipes. Not concerned in the least, Santa!!

We do, can get covers that hook on to the facet, you might want to make sure that you have the sprinkler pipe and valve on the top covered, the valve is about $90 if it freezes aqnd breaks.

we didn't cover them either, but am now considering doing so after seeing how low the temps will get. better safe than sorry, i suppose

Yes. I use the styrofoam covers available at Lowes and Home Depot.

Rags are cheaper

Nucky....totally unnecessary. This is not like up North. I remember dripping the faucet also and leaving the cabinets open so warm air can circulate in them. NO MORE!

[QUOTE=eeroger;2168076]Orange grove growers will water their trees trying to protect their fruit on the trees during some freezes (the icicles are spectacular). I don’t believe this tactic is helpful for lawn grass.