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Electric Swimming Pool and Spa Heaters 
The Zenith range of swimming pool and spa heaters from 
Thermalec® expands the heating capacity from 8kW to 168kW, ideal 
for larger pool and spa projects. 
 
Built to the same exacting standards traditionally associated  
with Thermalec® heaters, the Zenith range fulfils all the required  
electrical safety standards, with improved performance and greater 
stability. By utilising Zenith heaters, it allows design engineers  
to provide solutions with reduced pumps, piping, valves and  
control gear. It is this simple but effective design capability  
which can and will reduce the overall costs of pools or spas. 
 
DEVELOPED FEATURES 
Expanded range: 8, 16, 24, 48, 72, 96, 120, 144 & 168kW 
Uses electronic time delay relays 
Simplified design 
Simple & highly effective heat transfer into the water 
Larger sizes allows an installation reduction in pumps, piping, valves and control gear 
Reduce overall cost of projects 
 
Lady in pool by a waterfall
 
ORIGINAL FEATURES 
Unique spiral flow allows efficient heat removal from the elements, minimising the scale and sediment build up. 
Unique design ensures cooler water from filter pump does not strike the elements direct (giving longer life). 
Air generated from the pump passes harmlessly around the sides of the baffles and across the top of the heater elements (heat pumps heat both air and water). 
The control thermostat is positioned to sense the incoming water temperature and controls the pool to within 1°c. 
The safety thermostat senses the water temperature leaving the heater. 
Thermalec® Heaters can be used in conjunction with other heating systems to provide year round heating solutions for your pool or spa. 
Each heater is designed with its own simple self diagnostic system. 
Heating Elements always submerged 
Safety Thermostat 
Thermalec heaters grouped
For all enquiries call +44 (0) 1752 313 343 or contact us here