Hi Bigalf, the first and possibly the most important thing is, do you speak Spanish?
To get the best prices from the wholesalers and to deal with the commercial side of your business you will have to be able to negotiate the prices in Spanish, or possibly suffer paying higher prices.
Once you have mastered the language you need to brush up on the Spanish versions of the air-conditioning units as they still sell old spec. systems as well as the new spec, and they have different brand names.
Example costs for a 2 bedroom property;
From; 1x 12000 btu and 2 x 9000 btu units R407C gas standard split Daitsu units (hot & cold) are 1.625,00€ installed.
To; 1x 12000 btu fujitsu unit, 2 x 9000 btu units (hot & cold) all in inverters 2,499.00 € installed.
When you have mastered these first two things there are loads of new builds on the Costa’s that require air-conditioning, so if you can convince the punters that your honest, reliable and can give competitive quotes (recommendations are the way to go) you’ll be well employed, but be prepared to have to put in the hours!
Sping.