Knights Energy

Solar Water Heating Systems

Hot water from the sun, not from your electricity bill.

Electric water heaters and instant showers are among the most power-hungry appliances in any building. A solar water heater uses collectors on the roof to heat water directly with the sun's energy and stores it in an insulated tank, so hot water is ready when you need it — with little or no electricity.

We supply and install systems for homes, apartments, hotels, hospitals, schools and other buildings that use a lot of hot water, sized to the number of people and how much hot water they use.

Ideal for

  • Family homes
  • Apartments and residential developments
  • Hotels, guest houses and lodges
  • Hospitals, schools, boarding facilities and laundries

What's included

  • Hot water demand assessment: How many people, how much hot water and at what times.
  • Collector selection: Evacuated tube or flat plate collectors, chosen for your water quality, location and budget.
  • Storage tank sizing: Insulated tanks that keep water hot into the evening and next morning.
  • Electric backup: A backup heating element for long cloudy spells.
  • Plumbing integration: Connected to your existing plumbing with the right valves and safety devices.
  • Servicing: Check-ups and, in hard-water areas, descaling to keep it efficient.

How it works

  • Assessment: We look at your roof, plumbing and hot water use.
  • Proposal: System type, size and cost.
  • Installation: Collectors, tank and plumbing installed.
  • Handover: We test the system and show you how it works.
  • Servicing: Periodic maintenance to keep it performing.

Benefits

  • Lower electricity bills: The sun does most of the work your electric heater used to do.
  • Hot water during power cuts: Water stored in the insulated tank stays hot when the grid is down.
  • Simple and durable: Few moving parts and little to go wrong.
  • Frees up power: Less load on your supply — or on your solar PV system.

Frequently asked questions

Will I have hot water on cloudy days?

The system still collects heat on overcast days, and the insulated tank stores hot water from sunnier periods. A backup heating element covers long cloudy spells.

How big a system do I need?

Mainly it depends on the number of people and how much hot water they use each day. We size the collectors and tank from that.

Evacuated tube or flat plate — which is better?

Both work well. Evacuated tubes tend to perform better in cooler or cloudier conditions; flat plate collectors are robust and suit many sites. We recommend one based on your water quality, location and budget.

Does it need maintenance?

Very little. Periodic checks and, where the water is hard, descaling keep the system efficient.

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