Posted: Sun Dec 23, 2018 10:00pm
We bought a house a year ago and just had an Combi Oil Boiler (with domestic hot water supply) installed. Spanish made, excellent quality, plus a 1000ltr oil tank. Bought it online - delivered right to the installation point.. We also bought the composite pipes (Pex-Alu-Pex) and connectors ourselves, and brought the radiators from Germany. Steel radiators - better than the Alu radiators on the market here. Composite pipes are the best. Easy to lay and there will be no pipe clogging because lime cannot stick to the PEX inside of the pipes. It's similar to Teflon. Water on the Costa Blanca is very hard!
Did the slitting for the pipe canals ourselves. After the pipes were laid by the specialist, plus the radiator installation, we filled the trenches our- selves again. Filled it all with cement, and then re-tiled the floors.
The boiler and tank are in the garage next to the house.
Total of 11 radiators. Upstairs and downstairs. Two separate heating circuits for up and down. Each regulated by separate thermostats. As the piping is all under floor, it acts as additional floor heating.
Fast and great heating. Basically instant hot water. During warm season/days heating can be switched off, and only hot water is on. 1000ltrs of oil around 800 Euro. Lasts for around a year. We have 4 showers and 2 kitchens.200sqm living area.
By doing all this ourselves and only paying labour costs, we saved around 10,000 Euro compared to an offer we received from a local company.
Gas heating - having to buy the gas in bottles here - is expensive. Heating oil can be bought in the off season at cheaper prices. Our boiler is a condenser and saves up to 30% of a conventional boiler.