Lochinvar integrates solar and fossil-fuel water heating

Lochinvar, solar thermal, DHW, renewable energy

Lochinvar’s EcoCharger hybrid range of water heaters is a closely integrated combination of solar thermal and conventional gas-fired water heating that minimises the use of fossil fuel and achieves efficiencies of 96% (gross) and low NOx emissions (Class 5).

The HWH and HWHC hybrid units work with Lochinvar’s LSP20+ flat-plate collectors. All models have built-in solar control to maximise the use of solar energy. The gas burner only fires if solar energy cannot keep up with hot -water demand.

HWH models work with pre-heat storage vessels with storage capacities from 300 to 2850 l. There are seven models, with hot-water recovery from 540 to 2100 l/h.

HWHC models (pictured) have an internal coil, so there is no need for a separate pre-heat storage vessel, saving space in the plant room. They are particularly suitable for solar installations up to 8 m2. There are two models with hot-water recovery of 740 and 1100 l/h.

Options include a BMS interface and solar remote display.

For more information on this story, click here: April 2015, 103
Related links:
Related articles:



modbs tv logo

Rinnai UK launches applied products division

Rinnai is launching a new division - Rinnai Applied - which will be dedicated to the design, supply and service of larger HVAC units and systems that will meet the specific heating, ventilation, air conditioning and hot water demands of commercial and industrial premises.

Engineering services alliance welcomes government consultation on retentions and late payments

Actuate UK, the engineering services alliance, has welcomed the new government consultation on reforming cash retentions and taking legislative measures against late payments to small businesses, as part of the new Small Business Plan unveiled on 31st July 2025.