Calculate the heat loss in btu`s of the new addition at design indoor& outdoor temps for your area, baseboard strips are rated in btu`s for given lengths. Match the length with the loss.
No, PVC is not rated for 180 degrees which is the average operating temperature for baseboard heat
Your breakers
Answer No, if the current to the baseboard heaters is off they can't run or heat.
Baseboard heaters depends on convection currents in air to move heat around a room.
Not really. Baseboard heaters are rated in watts. W = Amps x Volts has not changed since electricity came into being. What has changed are some of the designs of the baseboard heaters. Some heat oil in the baseboard heaters, which dissipate the heat out at a more even heat. On the market now are new types of thrermostats that pulse the baseboard heaters for a more regulated heat rather just turning them on when the thermostat calls for heat and turns them off when the thermostat is satisfied.
depending on conditions but generally a heat pump will cost you less to run.
Baseboard is actually very efficient. Baseboard can be used on 99% efficient boilers but also 60% efficient boilers. The boiler you are using may not be efficient at all. If you have large heating bills, make sure your building is insulated and the boiler is running correctly. If your boiler is 80% efficient, remember 20 cents of your dollar is going out the chimney!
With adpaters and push nipples as supplied
About 150 deg.
There are two main benefits that a Hydronic Baseboard heater provides. The first benefit is that it allows zoning which means one can choose what rooms need heat. The second benefit is that it can heat up floors.
Floor heating is when you have heating units beneath your tiles that generates heat that radiates from beneath the home. Baseboard heaters are heater units that usually sit parallel to your baseboard. Each unit of baseboard heater is independent. Floor heating is more of a central heating unit.
The average baseboard heaters are designed to help heat your home in the most efficient way possible. Starting at the bottom of the house. This is the best way to make your house warm.