Quick answer: How do you install a HumidiKit on a HovaBator? Feed the HumidiKit tubing through a ½ inch vent hole, clip the humidity probe at egg height away from the fan and the mist outlet, fill the bottle with distilled water, set the hygrostat to your target humidity, and plug it in. Installation takes about 15 minutes. Wait 24 hours before trusting the reading or setting eggs.
| Step | What to do |
|---|---|
| 1 | Check the parts |
| 2 | Choose a ½ inch vent hole |
| 3 | Feed the tubing through it |
| 4 | Place the probe at egg height |
| 5 | Mount the hygrostat where you can see it |
| 6 | Fill the bottle with distilled water |
| 7 | Set the humidity target |
| 8 | Plug in and wait 24 hours |
If you have ever topped off a HovaBator's water channels twice a day and still watched the humidity swing, the HumidiKit is the fix. It is our automatic humidity system: a digital hygrostat reads the air inside the incubator and switches a small humidifier on and off to hold your target. Once it is installed correctly, it takes the daily guesswork out of hatching.
What the HumidiKit Does
The HumidiKit combines a digital hygrostat, a small humidifier unit, and expandable tubing. Instead of refilling water troughs and hoping, the hygrostat cycles the humidifier to hold your setpoint. In many tabletop incubator setups, the 1-liter bottle lasts several days to about a week, depending on room humidity, species, and how often you open the vents. Distilled water keeps mineral buildup from shortening the unit's life.
It fits most HovaBator models, including the 1588 (Genesis), 1602N, and 2370, because it only needs a ½ inch vent hole and room for the probe and tubing.
What You Need
- Your HumidiKit (hygrostat, humidifier unit, tubing, and 1-liter bottle)
- Distilled water
- A HovaBator with at least one open ½ inch vent hole
- A nearby power outlet
- Optional: a separate thermometer and hygrometer to cross-check the hygrostat during your first hatch
How to Install the HumidiKit on a HovaBator, Step by Step
1. Unbox and check the parts
Lay out the humidifier unit, the hygrostat with its probe, the tubing, and the bottle. Look for damage from shipping now. A cracked fitting is easier to spot before the tubing is threaded through the vent.
2. Choose your vent hole
HovaBator models have ½ inch vent holes along the top or sides. Pick one close to where the humidifier will sit outside the cabinet, and one that does not interfere with the egg turner or viewing window. On the 1588 and 2370, rear or side vents usually give the cleanest tubing run.
3. Feed the tubing through the vent
Push the expandable tubing through the vent from outside. It stretches, so the humidifier can sit some distance from the cabinet. Leave a little slack inside so the tube end rests a few inches above the egg trays, not pointing at the eggs.
4. Position the hygrostat probe
This step causes most installation problems. The probe should sit at roughly egg height, away from the fan's direct airflow and away from the tubing outlet. Too close to either, and it reads falsely high or low, so the hygrostat cycles wrongly. A side wall is a good spot, clipped or resting where it will not shift when you turn eggs.
5. Mount the hygrostat outside the cabinet
Put the digital hygrostat on top of the incubator or a nearby shelf where you can read and adjust it during the first few hatches. Keep it clear of cables and tubing.
6. Fill the bottle with distilled water
Fill the 1-liter bottle with distilled water and connect it to the humidifier unit. Tap water works in a pinch, but minerals build up faster and can clog the misting mechanism.
7. Set your target humidity
Switch on the hygrostat and set it to your species' range. For chicken eggs, that is 50 to 55% for days 1 to 17 and 65 to 70% from lockdown on day 18. Quail, duck, and waterfowl use different ranges, so see the Incubation Learning Center before you set the target.
8. Plug it in and let it stabilize
Plug in the HumidiKit and close the incubator. Give it a full 24 hours before trusting the reading. Humidity settles more slowly than temperature, and opening the lid during that window resets the clock.
Need a replacement part? Browse HumidiKit replacement parts, including the tube with adapter, sensor, and fan.
HumidiKit Probe Placement by HovaBator Model
| Model | Vent to use | Best probe placement |
|---|---|---|
| HovaBator 1588 (Genesis) | Rear or side vents | Side wall at egg height, clear of the control center's airflow |
| HovaBator 1602N | Top or side vents | Side wall, away from the tubing outlet |
| HovaBator 2370 | Side vents near the fan | Opposite side from the fan, so forced air does not skew the reading |
Common Installation Mistakes
- Probe too close to the fan: the hygrostat under-reads and overcompensates, so humidity swings instead of holding steady
- Tubing aimed at the eggs: direct mist leaves wet spots on shells instead of raising humidity evenly
- Using tap water: mineral scale builds up and shortens the humidifier's life
- Judging it too early: readings drift for the first day as the incubator seals; wait before troubleshooting
- Forgetting the refill: the bottle usually needs a top-up every few days to once a week, more often in dry climates or large cabinets
Test and Calibrate the HumidiKit After Installation
Do not assume the hygrometer is right on day one. Digital hygrostats can drift a few points out of the box.
- Compare against a second hygrometer: place a separate IncuTherm Temp/Humidity Gauge a few inches from the probe, not touching it or in the mist path
- Acceptable difference: up to 3 to 5% between the two is normal for consumer sensors; more suggests the probe is catching airflow or mist, or a sensor needs replacing
- How long: run both for 24 to 48 hours before changing anything
- Adjusting: if the second hygrometer is consistently higher or lower, shift the HumidiKit setpoint by the difference rather than chasing the display number
- Salt test (optional): seal a bottle cap of damp salt and a hygrometer in an airtight container for several hours; a good hygrometer reads about 75%
Recommended Humidity by Stage (Chicken Eggs)
| Stage | Humidity | Notes |
|---|---|---|
| Days 1 to 17 (setting) | 50 to 55% | Keep steady; avoid repeated lid-opening |
| Days 18 to 21 (lockdown) | 65 to 70% | Raise the setpoint on day 18 and stop turning; keep the lid closed until hatch |
Waterfowl, quail, and reptile eggs follow different curves. Check the Incubation Learning Center before setting a target.
Troubleshooting Humidity That Will Not Rise
- Confirm the bottle has water and the tubing is not kinked
- Check that the vent the tubing runs through is not letting out more air than the humidifier can replace; partly close unused vents
- Make sure the probe is not in a cold draft near a vent, which can read falsely low
- In very dry climates, one HumidiKit may not be enough for a large cabinet incubator
Cleaning the HumidiKit Between Hatches
Mineral scale and residue build up over a hatch, especially if tap water was used. Empty and rinse the bottle, wipe the inside of the tubing where you can reach, and run a short cycle with distilled water before storing the unit. This keeps mist output consistent.
Is an Automatic Humidity System Worth Adding?
If you refill water channels by hand, the HumidiKit removes that daily task and usually gives steadier humidity, which helps with moisture-sensitive eggs such as waterfowl and reptile eggs. Hatchers in dry climates see the biggest benefit, because room air alone often cannot keep a HovaBator in range. For a hatch-rate comparison, see our humidity control and hatch rate review.
FAQs (People Also Ask)
Q: Does the HumidiKit fit the HovaBator 1588, 1602N and 2370?
Ans: Yes. The HumidiKit works with the HovaBator 1588 (Genesis), 1602N, and 2370, and with most incubators that have a ½ inch vent hole and room inside for the probe and tubing. No drilling is needed on standard models.
Q: What humidity should I set on a HovaBator for chicken eggs?
Ans: Set the hygrostat to 50 to 55% for days 1 to 17, then raise it to 65 to 70% at lockdown on day 18 and keep it there until hatch on day 21. Quail, duck, and reptile eggs use different ranges, so check the species-specific numbers first.
Q: How long does the HumidiKit take to raise humidity?
Ans: Most tabletop incubators respond within a few hours of the humidifier cycling on. Give the reading a full 24 hours to stabilize after installing the kit or changing the setpoint, and avoid opening the incubator during that time.
Q: How often do I refill the HumidiKit bottle?
Ans: In a standard tabletop incubator, the 1-liter bottle usually needs a top-up every few days to about once a week. Dry rooms, hot weather, large cabinets, and frequent lid-opening all use water faster, so check the level during your daily check.
Q: Can I use tap water in the HumidiKit?
Ans: You can in a pinch, but use distilled water as a habit. Tap water leaves mineral scale in the humidifier that can clog the mist mechanism and shorten the unit's life. Rinse the bottle between hatches either way.
Q: Why does my humidity keep swinging after I installed the HumidiKit?
Ans: Wait 24 hours first. If it still swings, move the probe away from the fan and the mist outlet, check that the tubing is not kinked, and close unused vents that let humid air escape. Then compare the reading with a second hygrometer.
Q: Can I install the HumidiKit without drilling a hole?
Ans: Yes. The tubing runs through an existing ½ inch vent hole on the HovaBator, so no drilling is required on standard models. Choose a vent that does not interfere with the turner or viewing window.
Q: Can I use the HumidiKit and the water channels together?
Ans: You can, but most hatchers find the HumidiKit alone is enough once it is set up, and running both can push humidity too high. If you use both, watch the reading closely for the first day and lower the setpoint if needed.
Q: Is the HumidiKit universal?
Ans: It is designed to work with most incubators that have a ½ inch vent hole, not only HovaBators. Some models, such as the Nurture Right 360 and Maticoopx, need a hose adapter. Check the product page for your incubator before ordering.
Q: What do I do when my HumidiKit stops working?
Ans: First, check the water level, kinked tubing, and a blocked mist line. If output is still weak, replace the tube, sensor, or fan. We stock each as a separate part, so you do not need to buy a new kit.
Get Your HovaBator Humidity Dialed In
A correct HumidiKit setup comes down to probe placement and patience during the first 24 hours. Starting from scratch? Browse the HovaBator 1588 combo kits for bundles that include the HumidiKit, or the humidity control collection if you are adding one to an incubator you already own.
Related Reading
- HovaBator HumidiKit Installation
- HumidiKit Product Review
- How to Manage Humidity in Your Egg Incubator
- When to Replace Your Incubator's Humidity Sensor