How to save money by supplying hot water in a 35-bed hotel?

Generally, a small steam boiler is used, which has low energy consumption. If the effect of regular water supply is more obvious, it can also provide heat. Also, if there is enough sunshine time, you can consider investing in solar heating system at one time, but the cost is higher. But the use cost is low. Not sure where the hotel is. (province, city, suburb, near school or near railway station with heavy traffic)

Secondly, I don't know the decoration and style of the hotel.

But I suggest that you still use boiler hot water supply (electromagnetic boiler) or heat pump water heater. As for solar energy, hot water supply is not timely or often uneven, and the cost of ordinary water heaters is too high. If it is hot water for bathing, you can install a solar water heater to save money. If it is drinking water, you can install a cold and hot water dispenser. You have both boiled water and cold drinks, which cost little. It is better to use natural gas to save trouble than to take care of both places. Because we pay attention to environmental protection now, if you burn a boiler, the environmental protection department will come to you. Although you saved some money, you caused countless troubles, which is not cost-effective. In addition, if electricity is used, the cost will be higher, not to mention that you are a hotel with more than 30 rooms, even more than 300 hotels dare not say that they need electricity to operate.

My suggestion is that you use natural gas and then make a better steam boiler circulation system, which can solve the heating problem of your guest room and the kitchen system of your restaurant. A smaller circulation system is about 300,000-400,000 RMB, which is relatively suitable. But I suggest you don't install central air conditioning in the guest room, it's hard to recover the cost!