Tuning Your Solar Hot Water Booster for Winter Climates

What happens to your hot water when the winter rains set in for a week? That is where your helper heating element comes into play. Correctly managing your solar hot water booster is the difference between an energy-efficient winter and a shockingly high seasonal power bill.

How Does a Solar Hot Water Booster Work?

Boosters act as direct secondary heating elements within your system when solar energy isn’t sufficient:

• Electric Elements: A submerged resistance rod heats the top third of your storage tank when temperature sensors indicate a drop below preset limits.
• Gas Boosters: An inline continuous flow unit sits between your solar tank and your taps, heating the water on-demand only if it leaves the solar tank colder than \(60^\circ\text{C}\).

Using a solar hot water booster ensures your water temperature remains above \(60^\circ\text{C}\) to prevent Legionella bacteria growth, keeping your household safe and healthy even during the coldest winter storms.

Avoiding Constant Energy Drain

If your solar hot water booster timer is incorrectly configured, it might run constantly, heating your tank overnight and leaving no room for the sun to warm the water the following morning. To lower your bills, use a programmable timer that limits booster run periods to early mornings or late afternoons.

To maximize your long-term efficiency and ensure your system was sized efficiently in the first place, cross-reference your setup with this residential pricing and sizing breakdown to verify your current system setup.