Heat pumps · 7 models

CTA heat pumps

All 7 models from CTA in our database, with the key figures side by side. Every value comes from an official register or the manufacturer; the source is on the product page.

At a glance

Rated output 35 °C
7 to 21 kW
SCOP (35 °C)
4.67 to 7.28
SCOP (55 °C)
3.83 to 5.25
Energy label 35 °C
A+++ (3)
Outdoor unit sound power
48 to 53 dB(A)
Refrigerant
R290 (7)
COP A7/W35
5.31 to 5.53

This is an overview by data, not a test or recommendation. Models from other brands with the same technology are in the comparisons and on the category page.

All models

ModelSCOP (35 °C)1,2Outdoor unit sound power1Refrigerant2
AH CV 18a5.3351 dB(A)R290
AH CV 12a5.348 dB(A)R290
AH CL 21a4.6753 dB(A)R290
OH CT 12s7.28–R290
OH CT 6s7.28–R290
OH CT 18s7.06–R290
OH CT 9s7.06–R290

Compare all models →

Lists featuring CTA

Other brands

Sources

  1. European Product Registry for Energy Labelling (EPREL) – heat pumps — Europese Commissie · accessed 18 Oct 2026
  2. List of eligible heat pumps (BEG) — Bundesamt für Wirtschaft und Ausfuhrkontrolle (BAFA) · accessed 18 Oct 2026