Dear customer, they are equipped with an electric heating element for a power of 500 Watts or 1200 Watts.

You'll need to make the connections to your water system and your engine. The ports are all half inch male threads so you will need four female fittings. The type of fitting depends on your water system hoses and engine hoses and the diameter of each. I used 15mm half inch hose tails with jubilee clips to connect to the engine cooling system and standard half inch flexi-hoses to connect to the copper water system pipes via compression fittings.

Dear Athanasios, if you order this Boiler, you will get this with a 230 Volt, because we only got 230 Volt in our stock.. Boiler with 110 Volt, we have to order from the manufacturer. Your SVB-team.

Hello Szymon, that has some factors, like: engine size, Boiler size, flow rate of the number of revolutions per minute. A short tour of maybe one hour should be enough, otherwise there is a electric heating element to make the rest. Yours SVB-team.

Dear Sheila Ann, the manufacturer gives a guarantee, but without specifying how long or for what. Unfortunately, as a retailer, we cannot provide any more precise information, only the manufacturer can do this. Yours SVB-team.