Research / Development

Emergency Cooling for the Small Room

A deliberately small, technically simple cooling platform for heat-resilience: initially designed around a 10–15 m² room, 24V DC operation, solar compatibility and a 24V power-supply fallback — without a battery in V1.

The Deadly Market Failure

The starting observation is not that every heat-related death could have been prevented by air conditioning. The narrower hypothesis is that extreme heat can create a severe mismatch between urgent cooling need and the availability, affordability and deployability of suitable cooling equipment.

Founder discovery: need → attempted purchase → sold-out market → engineering response.

2026: Demand, Prices and Availability

Germany experienced an exceptional jump in mobile air-conditioner demand in 2026. Around 387,100 mobile units were sold in the first half of the year, about 130% above the first half of 2025. June alone accounted for roughly 290,200 units. These figures include mobile monoblocks and portable split systems, but exclude fixed split installations.

387,100 mobile units sold in Germany, H1 2026
+130% H1 unit sales vs. H1 2025
€354 average mobile-unit price in June 2026

Illustrative current retail prices

Market Example product / class Approx. price
Germany Comfee' Smart Cool 7000 from €269
Germany Midea PortaSplit Cool 2.35 kW from €849.90
Germany Midea PortaSplit 3.5 kW from €1,099
France Cecotec ForceClima 7100 from €264.90
France Bosch Cool 2000, 2.6 kW / 9,000 BTU from €484
France Midea PortaSplit 3.5 kW around €1,199+

Retail prices are market snapshots and can change quickly; they are not quotes or recommended purchase prices.

The 2026 stock problem

The French Midea PortaSplit provides a particularly visible example. A July 2026 stock study recorded mainstream retail availability for only about 23% of the monitored period, with no mainstream website stock for roughly 96% of the time. Restock windows could disappear within minutes.

This should not become the business plan: conventional manufacturers are expected to react to the 2026 demand shock. The stronger thesis is that cooling adoption, extreme-heat exposure, installation bottlenecks and the need for simpler, portable and power-flexible systems remain.

V1 Technical Direction

V1 deliberately removes the battery. The target is a low-complexity 24V DC platform that can work from a suitable 24V solar source and fall back to a 24V power supply when grid power is available.

24V DC
solar-native electrical architecture
PSU
24V grid fallback
NO BATTERY
V1 complexity reduction

Candidate architecture includes MPPT, DC buck/boost regulation where required, low-voltage protection, BLDC compressor control, soft-start, PWM-controlled fans and temperature sensing. Refrigeration architecture and actual cooling performance still have to be validated experimentally.

The Founding 20: €6,000 Development Experiment

The initial concept is not to sell a €300 air conditioner. Twenty participants contribute €300 each to create a €6,000 development pool. The contribution is an early-stage development participation concept, not the price of a finished, certified consumer product.

Initial use Indicative €
Thermal / refrigeration prototypes1,500
PCB iterations / populated electronics1,200
Mechanical prototype700
Measurement / testing600
Power / solar experiments600
Documentation / infrastructure400
Contingency1,000
Total6,000

Funding Gates

Stage Indicative funding Purpose
Founding feasibility €6k 1–3 prototypes, PCB iterations, thermal measurement
Engineering pilot €15k–€25k ~5–10 improved systems, tooling and documentation
Pre-commercial pilot €50k–€100k ~20–50 systems, safety/compliance and supply-chain validation
Initial commercial batch €150k–€300k ~100–300 systems, working capital and support

These are planning gates, not supplier quotations, audited budgets or forecasts.

Local P2P Manufacturing Economics

The intended long-term model is a central technical platform with independent local micro-enterprises assembling, servicing and selling systems in their own markets. RC LWR can own and develop the circuit, PCB, firmware, CAD, software/API, documentation and test methodology, while local operators reduce distribution and service friction.

Illustrative unit economics at €749 consumer price

Item Illustrative €
German consumer price incl. VAT749
Revenue ex. German 19% VAT629.41
Validated platform / kit target360
Local assembly labour90
Local logistics / packaging35
Payment / warranty reserve25
Indicative contribution before fixed costs/tax119

These are target assumptions for economic modelling, not a validated BOM, margin promise or profit forecast.

Possible annual contribution by local builder

Systems / year Consumer sales Illustrative contribution
20€14,980€2,380
50€37,450€5,950
100€74,900€11,900
250€187,250€29,750

At network scale, 100 independent local enterprises producing 50 systems per year would represent 5,000 systems. At €749 each, that is €3.745 million in gross consumer sales before VAT, discounts, returns and other adjustments.

Market-Scale Scenarios

A simple reference calculation uses the roughly 63,900 portable-split units implied by applying the reported 16.5% portable-split share to Germany's 387,100 H1 mobile-unit sales. This is an inferred reference figure, not an independently reported addressable market.

Reference share Systems Net sales at €749 gross
0.1%~64~€40.3k
0.5%~319~€200.8k
1.0%~639~€402.2k

Mathematical scenarios only; these are not market-share forecasts.

EU Inc. and a European Builder Network

The European Commission presented EU Inc. in March 2026 as a proposed optional harmonised corporate regime — a possible “28th regime” intended to make company formation and cross-border operation easier. The proposal included digital incorporation, a target of incorporation within 48 hours, less than €100 formation cost, no minimum share capital and easier digital company lifecycle processes.

Important: EU Inc. is a proposal, not an available EU-wide legal form as of September 2026. Any future builder network must therefore use the legal forms and compliance structures actually available in each jurisdiction until the framework changes.

The economic idea is straightforward: RC LWR concentrates technical development and platform infrastructure, while small independent companies can participate locally wherever there is sufficient demand, manufacturing capacity or service need. The result could be a distributed European production and service network rather than a single central factory.

Compliance and Product Development

V1 is a research/development project, not a claim that a finished consumer product is already compliant or commercially ready. A future commercial refrigeration product will need a proper assessment of applicable EU product safety, EMC, environmental, refrigerant and other requirements.

In particular, refrigerant selection is a real engineering and regulatory issue. R290 (propane) can be an environmentally favourable option for small room cooling, but it is classified as A3 flammable, so refrigeration safety cannot simply be designed away.

Development Logic

  1. Observe: quantify the heat-resilience and supply mismatch.
  2. Prototype: build the smallest technically credible 24V system.
  3. Measure: validate cooling capacity, power draw, thermal behaviour and reliability.
  4. Engineer: develop PCB, controls, mechanical design, documentation and test methods.
  5. Scale locally: enable independent builders only after technical and regulatory gates are passed.
Libre Economicus principle: compress operational friction, distribute participation, and turn specialised technical infrastructure into an economic platform for small actors.