Inspection Day 42°

18°F NUC - no ball

All pictures below taken during winter months.  Note that many are small to very small colonies, but almost without exception, the bees choose to hang out around and above the Warmbees In-Hive Warmers. The external indicators show if and how much heat may be being applied to the hives.  Also note that if colonies choose to keep their internal temperature at a value above the setting of the warmers, then the red LED goes out, but if the ambient outside air temperature is below that set temperature range, then NO RED LED == LIVE BEES AT A GLANCE!

0°F Small Cluster - ZERO!

Baseball Size Colony

Modern research and technology here at WARMBEES.COM, is allowing us to BLOW AWAY the long held challenges and concerns with artificially warming beehives!  We have designed Warmbees In-Hive Warmers to be a mild source of heat that DOES NOT irritate or disturb the bees, but assists them and reduces stress to the colonies, allowing them to more easily combat disease and the elements - improving their chances for survival!  The above pictures, testimonials, and many many more, absolutely indicate that bees love to be warm, and readily accept Warmbees In-Hive Warmers, and almost without exception, will move there colonies to envelop the Warmbees In-Hive warmers in the center of their clusters!  With Warmbees In-Hive Warmers placed low in a hive, the clusters can move up and easily get to their honey stores.  No more dead-outs right next to viable honey stores!  Contrary to many opinions, BEES DO NOT GET TRICKED and fly on super cold days, when it is warm and cozy inside!  Those instances when we have seen bees fly on cold days to their peril, they typically are out of honey and desperate to survive!  Another myth about artificially warming beehives is that "bees consume more honey, being more active from the heat".  BEES DO NOT CONSUME MORE HONEY in a heated beehive! In fact the opposite is true!  Warmbees customers consistently report less honey consumed by as much as half!  Heat provided by Warmbees In-Hive Warmers is heat the bees don't have to consume high calorie honey, to generate themselves!  The smallest cluster to survive an entire winter thus far, with the assistance of Warmbees In-Hive Warmers, was a softball size cluster at the start of Winter - (1 frame of bees or less)!  A second smaller cluster the size of a baseball made it to mid April, one week before I could get a package of bees, from which to steel a couple hundred to supplement.  The farthest a cluster has moved to envelop a warmer was the baseball sized cluster mentioned above.  That particular colony was my strongest hive in 2014 with nearly 4 Deep Langstroth boxes full of bees in mid September.  When I went to make last minute winter preparations and winterize my hives, I discovered that my second strongest hive of 3 deep Langstroth boxes was empty of bees, and this previously largest colony, was nothing but a baseball size cluster on Nov 1st 2014, due to Yellow jacket predation.  It was only about 35° F that day, so I lifted the half super from the top with lid still on - containing this small cluster, and removed all but 1 deep langstroth box below with some honey in it, and placed the warmer in that bottom box hoping the heat would rise into the colony.  I did not dare open the lid for a second time on that day for fear that the colony would not recover from the shock.  To my surprise 3 days later when I lifted the lid, they were gone!  Further inspection found them down around the Warmbees In-Hive Warmer in the bottom box!  I'd say the bees are speaking out-loud with that statement!  And pretty much every test colony and hive with a Warmbees In-Hive Warmer, makes the same statement!

For information on how to WINTERIZE YOUR BEES for maximum survival - SEE WARMBEES KNOWLEDGEBASE!




Live Bees!

Customer in Massachusetts:

Hello Ren,
I wanted to let you know about the state of my hives when I checked them today. It is our first 50 degree day this year. It has been an exceptionally cold winter with no mild patch ( over 40) since December, not even 1 day. We have had night time temps in the single and minus digits on a weekly basis.
SO it turned out to be an excellent winter to be testing a bee Warmer!
I am pleased to report that my hive with the warmer is thriving! The bees were active today and there were 2-3 frames of bees in the top super when I took a quick look to add a sugar patty.
The hive without a warmer is struggling badly. Only a fist full of bees when I looked inside. The hive had dysentery and this became apparent about 2 weeks ago when they were forced to try and take cleansing flights on a 35 degree day.


Customer in Kenai Alaska:

...​I ended up with a strong colony going into winter and we had a comparatively mild winter. We only had a couple different weeks were it stayed about -10 F during the night.
Now to the update. I built and bought additional hive bodies and frames and placed an order for a new colony for summer 2016 just in case my overwintering didn't work out. I've talked with the other four people I know of who overwintered. Two of them lost their colonies and the other two were not impressed with their production this summer. And we have been having an amazing summer so far.
My new colony arrived April 30, 2016 and the price was $175 this year. My supplier stated that he believed he would probably have to charge $200 per colony next summer. Needless to say I will attempt to overwinter again. The attached picture shows the new colony on the left and the overwintered colony on the right. I was able to take the insulation off the overwintered colony, change the temperature setting on the Warmbees heater to high, and start feeding mid March. The overwintered colony was capping new honey before the new colony even arrived.
All that said I have to preface that we had a relatively mild winter (-15° F) and an amazing spring,  but the picture kind says it all.Thanks for developing the Warmbees in hive heater. I will be placing an order soon.

Capped Brood mid February



Hi happy spring. While still having a foot of snow on the ground. So of the 2 hives that had heaters the buck fast hive died of nosema  . And the carney hive is super strong and made it to march on a deep and medium of honey at that time I gave honey trays from a late swarm and started feeding today. Both heaters where set on the 40 f setting and I plan on pulling the heater in May. So the death of the buck fast hive was nothing todo with the heater if anything they lasted longer because of it. And very pleased with the carney hive. So I will be using making nucs in June and I'll let you know how that goes. Thanks 

Softball Size Colony - Mid February


I had a very small hive going into the winter. They would not have survived w/o Warmbees. Now, going into this next winter, the hive is very robust and I am glad I got them threw last winter. Otherwise, I would have had to buy bees and everyone said bees were very expensive this Spring. Thanks. Nancy


​Lee in Montana recently said Mar 8, 2016:  “I thought I would let you know that my bees did very well this winter. I opened up two of my four colonies yesterday afternoon and they were absolutely thriving! They used less than half of their stores, had brood on the way and both were full of bees in both the upper and lower boxes. The other two colonies appeared equally well off; I haven’t had the chance to open them yet… Though the winter was mild here and I had made a fairly good insulation system, I think your Warm Bees heaters kept my bees in excellent shape. I installed min/max thermometers in my hives and every time I checked them this winter they were above 53 degrees. Outside temperatures were as low as -15 this winter; it wasn’t the -40 that we often get, but it was quite cold enough for bees. This system would probably have worked if we had gotten a colder winter.   Thanks again for making and marketing an excellent product!”


New comb on early prototype - Mid Feb

Loose Ball - Sub Freezing Night!

NUC - 18° F  

No tight Ball


Ruth in Virginia recently said Feb 12, 2016:  “I am really loving the heater that I bought from you in November!  If you remember, it went into 2 different nucs in the middle of a line of 4 nucs.  There was one other nuc on either side of the 2 heated nucs.  In January, we had some really cold weather that killed/chilled the unheated nuc on the far left.  This past week has been another cold spell and the unheated nuc on the far right is now sitting inside my house trying not to die.  Wished I had bought a second heater from you so I wouldn’t have had to go to extreme measures to keep this one alive.  The 2 nucs that have the heater are moving about freely on the comb closest to the heat board.” – Purchased 1 Warmer with Add-on, placing main warmer in 1 NUC, with Add-on board in second NUC.  (Not how it was designed to be used, but creative)

Enveloping Warmbees Warmer!

Above Warmbees in lower box!


Handfull - Sub Freezing Night!

This NUC grew 40% over winter!

Above Warmbees in lower box!




Amy - in Maine

"I'm a bad blogger! I meant to respond to your question about last winter before this winter started creeping in, but here we are. 
My small colony made it through all the way to March last year, and then collapsed. They had never been vigorous and then had a severe wasp infestation in October so without the warmer I don't think they would have made it that far - it was impressive. The Maine spring can be very long, cold, and damp and I think that's what finally did them in."   This case is similar to many of my test cases, which after much research and observation, lead to my discovery of small- colony behaviors, and factors of survival, regarding humidity, incubation, and brooding, and what constitutes a critical number of bees required for a colony to thrive!  SEE "HYPOHUMIDITY SYNDROME IN MASS-CRITICAL COLONIES"  in the Knowledgebase!   I have tested several methods, now proven to successfully recover failing critically small colonies!