Raising chicks at home or on a small holding is one of the most rewarding parts of poultry keeping, but anyone who has used an egg incubator knows that the process is rarely perfect. From unexpected temperature drops to humidity problems and eggs that simply refuse to hatch, even experienced poultry keepers occasionally face frustrating setbacks.
Across the UK, backyard farmers and smallholders are increasingly turning to egg incubators to hatch chickens, ducks, quail and other poultry year-round. Modern incubators have made the process easier than ever, yet successful hatching still depends on a few critical factors that must be carefully controlled.
In this guide, we look at the five most common egg incubator problems poultry keepers encounter - and, more importantly, how to fix them. Whether you are hatching your first batch of eggs or managing a small flock on a farm or homestead, understanding these issues can dramatically improve hatch rates and help ensure healthy chicks every season.
Temperature Is Too High or Too Low
Common causes:
- Incubator placed in a cold or drafty room
- Direct sunlight or near a heater
- Lid opened too often
- Not pre-heated before adding eggs
Solution:
- Place the incubator in a stable room (18–25°C)
- Keep it away from windows, heaters, and drafts
- Pre-heat for 2–3 hours before adding eggs
- Only open the lid when necessary
💡 Tip: Chicken eggs hatch best at 37.5°C.
Humidity Is Too High or Too Low
Common causes:
- Too much water in the tray
- Poor ventilation
- Large room humidity changes
Solution:
- Fill only the first water channel during incubation
- Use the second channel only during the last 3 days
- Improve airflow by opening vent holes slightly
💡 Typical humidity levels:
Days 1–18: 45–55%
Last 3 days: 65–75%
Egg Turner Not Moving
Common causes:
- Motor cable not connected properly
- Rollers too tight
- Eggs touching each other
- Motor jammed by dirt
Solution:
- Check motor cable connection
- Make sure rollers move freely
- Leave small space between eggs
- Clean rollers and tray
💡 Eggs should turn every 1–2 hours in automatic incubators.
Eggs Not Hatching
Common causes:
- Fertility problem
- Temperature fluctuations
- Incorrect humidity
- Eggs too old
Solution:
- Use fresh fertilised eggs (max 7–10 days old)
- Store eggs at 12–15°C before incubation
- Maintain stable temperature and humidity
💡 Average hatch rate: 70–85% is normal.
Incubator Beeping or Alarm Sound
Common causes:
- Temperature too low
- Sensor detecting abnormal conditions
- Power just connected
Solution:
- Wait until the incubator reaches correct temperature
- Check room temperature
- Reset the incubator if necessary
Most common egg incubator problems, from temperature and humidity issues to egg turner faults, can be resolved with the right setup and a few simple adjustments. With a little patience and regular checks, you can improve hatch rates and give your chicks the best possible start.
At ZOOM FARM, we always aim to stay in touch with our customers, reply quickly, and help solve problems fast whenever they come up.
After all, raising chicks should be a joy, not a test of patience with an incubator full of surprises.