Coolizi Coolzy: wall-mounted cooling and heating, without the installation
A wall unit that cools in summer and heats in winter, with no tools and no professional fitting. The maker publishes a coverage figure of 51 m² — a number this category rarely states at all — but withholds wattage and decibels. Sold for the German market, billed in euro.
- Cooling and heating in one unit, year-round
- Up to 51 m² coverage per the maker
- Mounts without tools — no professional installation
- Four modes, remote control and touch display
- 30 days money-back — return postage excluded
The checkout cites 8,910 verified customer reviews; the sales page repeatedly refers to more than 12,000 satisfied customers and more than 12,000 five-star reviews. Those are not the same figures, and no review platform is named. We reproduce them as the seller’s claim.
What the Coolizi Coolzy is
The Coolizi Coolzy is a wall unit with two modes: cooling in summer, heating in winter, both controlled by remote or touch display. The selling argument is the installation, or rather its absence — no core drilling, no outdoor unit, no landlord permission. For a rented flat that is precisely the point.
The 51 square metres, in context
51 m² is a published figure, and that is worth noting. Most sellers in this class state no area at all, or state one that contradicts physics. A concrete number can at least be checked — and it is in the right order of magnitude for what a unit of this form factor can do in a well-insulated room.
What is missing is the power draw. Without watts you cannot verify whether 51 m² is plausible, and you cannot budget the running cost. A customer account on the page describes a 42 m² room taken from 30 °C to 21 °C; that is a customer statement, not a measurement.
Full specification
| Type | Wall-mounted cooler and heater, year-round |
|---|---|
| Cooling | Brand-stated down to 16 °C |
| Heating | Brand-stated up to 45 °C |
| Coverage area | Up to 51 m² per the maker |
| Modes | Four adjustable modes |
| Control | Remote control and touch display |
| Installation | No tools, no professional fitting |
| Safety | Built-in safety functions (not further specified) |
| Noise | Described as whisper-quiet — no decibel figure published |
| Power draw | Not disclosed |
| Dimensions and weight | Not disclosed |
| Certification | None named |
| Manufacturer | Not established |
| Guarantee | 30 days money-back — return postage explicitly excluded |
| Shipping | €11.99, not included in the package price |
| Currency | Euro — the checkout bills in euro and ships to Germany |
Price and packages
Prices as shown at the seller’s checkout in July 2026, in euro. The checkout ships to Germany and bills in euro — no conversion is involved.
What the checkout adds on top
The package price is not the final total. On the two-pack, the tier marked as bestseller, the checkout arithmetic runs like this:
- Package price as selected: €249.98
- Shipping: €11.99 — not included in the package price
- “Journey Package Schutz” protection: €9.99 — switched on by default, you have to opt out
- Tax: €4.99
- Grand total: €276.95 — about €27, or 10.8%, above the advertised package price
The package protection is the line to watch: it arrives at checkout already enabled, not disabled. Anyone who does not notice the default pays for it.
Returns: the 30-day guarantee
The seller describes the guarantee as hassle-free and unconditional — with one limitation stated in the same paragraph:
- 30 days from receipt, full refund of the purchase price or a replacement unit at your choice.
- Return postage is explicitly excluded. On a wall unit of this size that is not a trivial amount.
- Not stated: the return address, how long a refund takes, or whether the unit must be unused.
A German company? What we found
The page states in several places that it is a 100% owner-managed German company, with German-language support and development in Germany. The checkout ships to Germany, bills in euro and the support replies in German — that part is consistent.
There is, however, an inconsistency worth knowing about. On the legal pages of another product under the same Coolizi brand — the PureAir Pro — four business names appear (Coolizi, COLAPA, Cola Technology International Co. Limited, Hilipert), along with two Hong Kong business addresses and Hong Kong governing law.
This is not an accusation and it proves nothing on its own: a brand can sell through different entities in different markets. It does mean the “German company” statement does not follow from what is publicly visible. If the corporate seat matters to you — for warranty or right of withdrawal — ask support for the registered name and address before ordering.
Who it fits
It fits if you rent and cannot install anything permanently; if you want one unit for both seasons; if your room is in the range of the stated 51 m²; and if euro billing with delivery inside Germany works for you.
Look elsewhere if you need the wattage to budget electricity; if you want a decibel figure for a bedroom; if you need certification paperwork; or if you expect a refund without paying return postage yourself.
FreezAir is an independent editorial resource. We do not make, stock or ship this product and we take no orders — payment, delivery, guarantee and refunds are handled by the seller. We may earn a commission when you buy through our links, at no extra cost to you. Specifications and prices reflect seller materials reviewed in July 2026 and may change.