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THE UNIQUE WAY TO HEAT YOUR POOL 

Thermalec pool heaters are unique in that they will operate  
with water coming from the filter with high velocity without  
it striking the heating elements directly. Instead, the water 
is deflected by baffles, forcing it round the curved base  
of the heater. 
 
Thermalec is guaranteed to hold its thermal efficiency  
for life, without regular cleaning or de-scaling. 
Please see below and click for further 
information. 

CALCULATE ONLINE 

You can specify either the Surface Area or Pool Volume. Calculation based on 7 hour heating period per 24 hours. For your specific needs please contact our sales department. 
 
All heaters with Titanium elements 
Surface area (if known):
Volume (if known):
Desired temperature:
12THR 
Thermalec swimming pool heater 12 PHR
Cast in BS-EN-1561-1997-ENGJL-200 iron, with a heavy fusion bonded epoxy coating (Scotchkote 206N) impervious to chemically treated pool water and sea water, constructed in accordance with British Patent 2.092,282 Design pressure of 35psi (2.46kg/cm2) with 3/4" safety valve(s) set to operate at the maximum normal working pressure of 30psi (2.1kg/cm2) giving protection to both the heater and and the installation as a whole against over pressure.  
24THR 
Thermalec swimming pool heater 24 PHR
Circuit breakers are fitted instead of the On/Off switch and protect the heavy power circuits against short circuit. These not only act as the main switch, but in the event of a water temperature rise within the heater being sufficient to operate the safety thermostat, a trip is triggered within the breaker such that the heater is totally isolated at its point of supply. 
36THR 
Thermalec swimming pool heater 36 PHR
Fitted with a thermometer to indicate the outlet temperature, which enables flow rates to be adjusted when heaters are either fitted with a by-pass, branched off a much larger flow pipe, are used in multiples or are operated in parallel with an alternative means of heating. 
72THR 
Thermalec swimming pool heater 72 PHR
Circuit breakers are fitted instead of the On/Off switch and protect the heavy power circuits against short circuit. These not only act as the main switch, but in the event of a water temperature rise within the heater being sufficient to operate the safety thermostat, a trip is triggered within the breaker such that the heater is totally isolated at its point of supply. 
120THR 
Thermalec swimming pool heater 120 PHR
Additional to the specifications below. Circuit breakers are fitted instead of the On/Off switch and protect the heavy power circuits against short circuit. These not only act as the main switch, but in the event of a water temperature rise within the heater being sufficient to operate the safety thermostat, a trip is triggered within the breaker such that the heater is totally isolated at its point of supply. 
ZHR 144 
The ZENITH range of swimming pool heaters is in keeping with the intrinsic values of Thermalec┬« heaters, with its robust cast iron water vessel housing the new Titanium 825 8kW heating elements. ZENITH is designed with Thermalec's unique spiral flow to allow the pool or spa water to flows through the heater to reduce scales build up. 
ZHR 168 
The ZENITH range of swimming pool heaters is in keeping with the intrinsic values of Thermalec┬« heaters, with its robust cast iron water vessel housing the new Titanium 825 8kW heating elements. ZENITH is designed with Thermalec's unique spiral flow to allow the pool or spa water to flows through the heater to reduce scales build up. 
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