*Commercial · Custom installations*

# Heat you were going to buy anyway, from compute that pays for itself.

We colocate server-grade hardware on your site and use it as the heat source, sized to your load. You get stable, controllable comfort or process heat. The computation earns rewards, and the rewards offset your electricity cost.

- [Start a project](https://promethean.is/commercial#contact)

*Countless applications*

## Anywhere heat is a line item.

### Pools and hot tubs

Water is the ideal heat sink. Our first prototype ran as a 4.8 kW pool heater and cut electrical cost by 43%.

### Hotels and condos

Feeds hydronic loops and domestic hot water in apartments, hotels, and condominiums, where demand runs around the clock.

### Food production

Steady low-grade heat for drying, curing, proofing, and washing, in loads that want warmth every hour.

### Agriculture

Root-zone and air heating for greenhouses, barns, and aquaculture, where a few degrees over winter decide the season.

### Schools and campuses

Buildings with central plants and long heating seasons. Replace or supplement boilers without changing what the occupants feel.

### Brewing and dairy

Hot water and process loops for mashing, pasteurizing, and clean-in-place cycles, matched to a steady base load.

### Car wash and laundry

Businesses that buy hot water all day. Preheat the make-up water and let the compute pay down the bill.

### Process heat

Output up to roughly 180°F for preheating, washdown, and process loops. It pairs with heat pumps or solar to push efficiency further.

*Getting started*

## From heat load to running system.

1. **Assess.** We study your heat demand, electricity rate and site. If the numbers do not work, we tell you.
2. **Design.** Thermal, electrical and network design sized to your load. Our Chief Engineering Officer is a licensed Professional Engineer with a decade in mechanical, electrical, and plumbing systems.
3. **Build.** Factory-assembled modules, installed and commissioned by our team with your contractors.
4. **Operate.** Networked equipment responds to grid conditions. We monitor, maintain and manage the compute. You manage a thermostat.

*Commercial models*

### Full ownership

**For**: Sites that want to own the asset and run it themselves.
**Upfront**: You buy the system outright. Pricing is quoted per project after the assessment.
**Operation**: Fully unlocked, expert mode. You control the equipment; our team designs, installs, and commissions it.
**Rewards**: You keep all compute rewards. No guarantee of profitability.
**You get**: The heat, the hardware and the full upside, with the full exposure to match.

**Best for**Operators with their own technical staff who want maximum return and maximum control.

### Subsidized service agreement

**For**: Sites that want the heat and the savings without owning or running compute.
**Upfront**: Equipment priced below retail, under a service agreement. Terms are set per project.
**Operation**: Fully managed by Promethean. We monitor, maintain and manage the compute; you manage a thermostat.
**Rewards**: Rewards pay off the system, and you receive a guaranteed monthly return.
**You get**: Heat you were going to buy anyway at a lower cost of entry, with a predictable return instead of a variable one.

**Best for**Hotels, campuses, and food producers who want a turnkey system and a predictable line on the budget.

*Start a project*

## Tell us about your site.

A few details are enough. We will come back with questions. If the numbers do not work, we will say so.

*Form: Tell us about your site. Submission contract: https://promethean.is/llms.txt#forms*