Eli5 How can one small flame in a boiler be enough to warm a whole houses central heating system?

Question

Eli5 How can one small flame in a boiler be enough to warm a whole houses central heating system?

In: Engineering

Answer 1

Ever boiled water on a stove? It happens right? You have a pan of cold water, then minutes later it’s boiling.

But sure, the house is bigger.

That’s why instead of having a person checking when the water is hot your water heater comes with an automated control system to keep the water hot through the day.

And I don’t know about you, but the only little flame there is the pilot, the burners are quite the spectacle, specially when they first light up.