The Hospitality Zero-LPG Framework: Engineering Commercial Hot Water Without On-Site Fuel

30 October 2026

Why hotels look at this

Fiidotherm’s commercial heat pump is made for the kinds of properties named on its website: five-star hotels, resorts, big hospitals, lodges, apartments and hostels. For resorts, the page mentions guest accommodation, swimming pools and spa facilities.

Two things push hospitality teams to rethink LPG. One is cost: hot water demand rises with occupancy, and an LPG heater’s gas use rises with it. The other is the safety and logistics of storing gas on site. A heat pump removes both for the water heating side, though kitchens that cook on gas are a separate decision.

The seven-step framework

1. Audit the hot water demand

Start with litres, not equipment. Record how many litres of hot water the property uses, when the morning and evening peaks fall, and how demand changes between peak and off seasons (weddings, festivals, tourist months). Separate guest rooms, kitchen, laundry, spa and pool. Hot water at hotels is needed around the clock, which means the storage design is as important as the heater.

2. Map today’s energy sources

Note what makes hot water now: LPG, diesel, electric heaters, solar, or a mix. Pull twelve months of bills if you can. This gives you a baseline to compare against, and it shows which season stresses the system.

3. Size for your coldest month

Fiidotherm’s FAQ says heat pump COP is around 4 to 5 at 20°C ambient and around 2.5 at 0°C, and that it is higher when the temperature gap between the exchanging fluids is smaller. A system sized only for a mild day will fall short in winter. Give the manufacturer your coldest realistic month, your peak litres and the hot water temperature you need, and let the sizing follow from those.

4. Choose the location

Fiidotherm’s FAQ sets out the precautions that decide where the plant can go:

• Enough ventilation around the unit
• Close to the electrical connection (single or three phase), with a voltage stabiliser if the supply fluctuates
• Under shade where possible, so leaves and debris do not choke the fins and fan
• A strainer or filter, and a water softener where water is hard (above 300 ppm)

The same FAQ points out that a hotel’s terrace space is precious, and that a heat pump takes very little space and can even be kept indoors or on the ground floor. That frees the terrace for other uses.

5. Plan storage and the plumbing loop

This is where a consultant earns the fee. The heat pump heats stored water; the loop delivers it to rooms, kitchen, laundry and spa. Insulate the pipework, place shut-off valves for servicing, and think through how the heat pump system links with any existing boilers or solar water heaters you keep. Fiidotherm says its commercial system can be tailored to different establishments, from a small lodge to a large resort.

6. Commission and test

Check water pressure, pressure valves, shut-off valves, non-return valves, filters and the control box before handover. Record starting readings so that you can compare against them later.

7. Keep to a service schedule

Fiidotherm’s FAQ recommends a yearly or half-yearly inspection by experts, and says people from the air-conditioning field are a good fit. It also advises against running the unit 24 hours a day, as that shortens its life, suggesting around 8 hours of running, used as required. Build that into the storage design so that guests never notice.

A simple way to compare your numbers

Because we cannot quote a savings figure that fits every hotel, here is a method you can run with your own data:

1. Heat needed per day (kWh) is roughly litres per day × temperature rise in °C × 0.00116.
2. Electricity needed is that figure divided by the COP at your coldest month.
3. Multiply by your electricity tariff to get a daily running cost.
4. Set this against the daily LPG cost of heating the same volume.

This is a screening calculation only. A proper design includes storage losses, piping losses and standby capacity.

What the framework does not promise

• It does not promise a specific percentage saving. That depends on your tariffs, climate and usage.
• It does not remove every flame from the property. Gas kitchens remain a separate system.
• It does not remove the need for local approvals. Check electrical, building and fire requirements with the relevant authorities in your city.

About Fiidotherm

Fiidotherm manufactures heat pump water heaters in India and is a sister concern of Sudarshan Saur Shakti Pvt. Ltd., which has designed, manufactured and marketed solar water heaters since 1989. That is group experience in thermal products. It is not 34 years of heat pump installations, and we do not claim it is. Explore the commercial heat pump, swimming pool heat pump and industrial heat pump pages, or read the FAQ.

Frequently asked questions

What does “zero-LPG” mean for a hotel?

It means no LPG is used to heat water. A heat pump heats water using electricity and heat from the air, so no gas is burned or stored for that purpose. Kitchen gas is a separate matter.

Is a heat pump hotel hot water system fossil-fuel free?

Not strictly. It burns no fuel on site, but the electricity it uses comes from the grid. That is why we describe it as no on-site fuel.

How do I size a heat pump for a hotel?

Start with litres per day, the morning and evening peaks, the temperature you need, and your coldest month. Share these with the manufacturer, who sizes the heat pump and storage together.

Can it work with my existing boiler or solar water heater?

That is a design question for your consultant. Fiidotherm says its commercial system can be tailored to the establishment, and the group makes solar water heaters too. Ask for a layout review.

What maintenance does it need?

Fiidotherm’s FAQ recommends a yearly or half-yearly inspection covering pressure and shut-off valves, filter or strainer, control box, and cleaning of fins and fan, preferably by people from the air-conditioning field.