This will be my first winter using an in-hive warmer and, as usual, I’m posting both to share the information and keep a history going for myself. I installed the Warmbees product in August during my last full hive inspection. (Note that Warmbees has changed the configuration on their heater from the one I purchased – the new model looks more compact and can be re-oriented for use in a top bar hive.)
Installation couldn’t be easier: select the temperature range (mine is set to low to maintain a temperature of about 40 degrees F), drape the wire ribbon with LED signal light and the cord over the edge of the hive box, and plug it in to an extension cord. Naturally, this requires the colony to be within cord distance of an electrical outlet. I haven’t quite figured out a battery/solar configuration yet. There’s no assembly required and you don’t need to know anything about wiring. The tiny LED makes a reassuring glow in the front yard:
I used an Imirie shim installed with the opening toward the back of the hive to run the cord and ribbon through, and blocked the extra space with dry grass. When I wrap the hive with insulation for winter in November I’ll tape over the hole as the bees should be used to it by then. When I replaced the quart mason jar of sugar syrup for fall feeding today (they’ve been going through a quart every three days) I noticed that they’ve built beautiful, regular comb over the wires running on top of the frame.
The beauty of this device is that it is controlled by the internal temperature of the hive box. Other products that wrap around the outside of the equipment doesn’t sense the heat generated by the cluster of bees and by overheating them can convince them to fly in freezing weather. We had a frost last night but with a good sized cluster generating its own warmth the heater hasn’t needed to go on to keep the internal temp at around 40. I have high hopes that this product will help an otherwise healthy colony last through the long, cold Maine winter and the cold, wet spring that follows.
The garden in late September after the first frost: