I recommend the OGS Company for the respect of its customers. Clean work at home, deadline met and reassuring know-how. I have complete confidence in this company.

Serious team, good advice, very responsive and efficient, both for the paperwork and the technical part. I am very happy with my installation (photovoltaic panels, heat pump and CET) I highly recommend this company.

I have called on the OGS company several times for different installations, heat pump, air conditioning and recently for the installation of a water softener, I am very satisfied with the services provided. In addition, the after-sales service is impeccable and M Olliers listens to his customers. I can only recommend this company.

I chose this company for the installation of Photovoltaics and its installation is top notch, well sized for my consumption. Since then he has also taken care of my heat pump system which serves as heating and domestic hot water. I have complete confidence in him.

I was the victim of a breach of trust on the part of this company, my partner called this Mr following a fault on our boiler, I solved the problem just by adjusting the temperature, we kept the appointment for the interview. he came and asked what the problem was, I told him there was no problem, you just had to do the maintenance, everything was working perfectly. he emptied the water tank and burned the two cards and told me that the boiler was not working that I had to disturb it and rearrange it to start it. I was taking care of my 11 month old son. He came to me. see the salon and tells me to pay 160 euros for the maintenance. I pay by check and an hour later no hot water, the boiler no longer starts, I call him and he tells me nonsense. I am going to file a complaint for breach of trust and fraud. be wary of this company it is dishonest