Gas water heater?
Perhaps venting the hot air into the room instead of out the roof will
supply enough heat...
Should only cost about $30 (for a CO detector). Adjusting the vent requires
only a sharp rap with an adequate hammer.
Buy one of those little ceramic electric heaters. Walmart, hardware
store, building center, etc.. They're about $30 and very safe to use.
They draw lower wattage than the bigger electric heaters. Blow it
toward the wall where the pipes are. (of course leave a few feet in
between - read the directions to know how far to space it from walls).
Heat tape is costly too, but it may be a little cheaper, but this
heater wont need anything installed. Just plug it in.
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