We have been using Climate Master for annual servicing of our Brivis L42 Cooler and Brivis He20i xa v3 Gas Heater since installation by ActewAGL 15 and 13 years ago, respectively. Climate Master Servicemen have been competent, courteous and helpful; one once noticed and fixed a small roof leak as a bonus for free in a few minutes! Over 15 years of annual servicing, extra issues have only been missed twice, and understandably in each case. All other services have been excellent.
Only two breakdowns have occurred in that time, both in the Cooler: the first, a solenoid switch for the Cooler refill and emptying valve; the second, the fan attachment nut for the Cooler sheared off and the fan came off after 15 years of reliable and quiet operation. A new nut assembly was needed, and fixed the problem. Cooler pads also needed replacement after 14 years mainly due to grime accumulation from Belconnen Way traffic exhaust over the years (about 150 metres upwind of our home). The Networker Controller for the Heater and Cooler has also been replaced once after 15 years for a fault in the temperature and time setting knob electronics. Cost of parts is a bit high but reasonable for the parts, in my view, and comparable with other products.
Cost of solenoid assembly was $90 approx from memory, cost of fan nut assembly $48, Networker Controller was $271, replacement pads, complete set for Cooler, about $500; callout $200 all including GST. The total of $519 below is a typical example for the following excellent service by Dave: fan nut assembly $48, Networker Controller replacement after 15 years $271, call out fee $200 (all prices GST included), call completed in about 20 minutes from arrival to departure.
I am a very satisfied customer, and I can recommend Climate Master from my experience of 15 years of service by the company.

Approximate cost: $519