HTH Thermometer

The HTH Thermometer is a precision pool maintenance instrument designed to provide accurate water temperature readings for residential swimming pools and hot tubs.

This essential monitoring tool helps pool owners manage chemical efficiency and swimmer comfort by providing a clear thermal data point required for optimal water balance and heating system adjustments.

Product Specifications and Features

• • Dual Scale Display: Features both Celsius and Fahrenheit temperature readings displayed on a high contrast internal scale for easy visibility through the water.
• • Floating Design: Manufactured with a buoyant housing that allows the device to remain on the water surface for quick retrieval and constant monitoring.
• • Shatter Resistant Body: Constructed from heavy-duty plastic to protect the glass spirit tube from impact or accidental drops on paved pool surrounds.
• • Tethering Eyelet: Includes a dedicated attachment point and a nylon cord to secure the thermometer to a pool ladder, grab rail, or weir cover.
• • Alcohol Based Indicator: Utilises a safe spirit filled blue or red liquid rather than mercury, ensuring safety for families and the environment in case of breakage.

Ideal Use and Application

• • Chemical Optimisation: Use the temperature data to adjust chlorine dosing and salt chlorinator settings, as higher temperatures typically increase sanitiser consumption.
• • Heater Monitoring: Ideal for checking the performance of solar heating panels or heat pumps to ensure the water reaches the desired swimming temperature.
• • Winter Maintenance: Monitor water temperature during colder months to determine when to reduce pump running times or stop certain chemical treatments.
• • Placement: Use the included cord to tie the thermometer in an area with good water circulation for the most accurate average pool temperature reading.

Frequently Asked Questions

• • How deep does this measure? This is a surface floating thermometer; it measures the temperature of the top thirty to fifty millimetres of the water column.
• • Is this suitable for a spa or hot tub? Yes, the materials are designed to withstand the higher temperatures typically found in heated spas and jacuzzis.
• • How long does it take to get a reading? For the most accurate result, allow the thermometer to float in the water for at least three minutes before checking the scale.

Pro Tip for Pool Owners

• • To get a more accurate reading of your pool's true temperature, avoid checking the thermometer if it has been floating in direct midday sun.
• • Instead, move it to a shaded corner of the pool or submerge it slightly deeper for thirty seconds; this prevents the surface plastic from absorbing solar heat and giving you an artificially high reading.