Selection, cost, after-sales — the frequent questions, answered

Pricing is tiered by floor area, number of loops and level of fouling, and commonly falls in the range of tens of yuan per square metre including agent and on-site service. The final price follows an on-site survey and quotation; pricing is transparent with no hidden fees.

Generally every 3 to 5 years, depending on water quality and usage. When symptoms appear — larger return-temperature difference, slower warm-up — do not wait for the cycle; arrange a survey sooner.

Micro-bubble and power circulation are both gentle physical methods that do not rely on high pressure. Qualified pipes are not damaged under the proper procedure, and pressure and flow are recorded before and after each job.

Equipment and agents are developed and produced in-house; we survey first and give a written plan, deliver data with the acceptance sheet, and back both machine and work with a unified warranty. The difference is in the standard, not the price.

No. F8 is a coil cleaner-sanitizer for open, sprayable surfaces such as AC coils, drain pans and fan wheels only. For piping interiors use micro-bubble / power circulation, and if needed F3B circulation, then rinse, then F1 protection.

Yes. Machines are supplied direct from the source with operation training. Home users should learn the process first; commercial users are advised to take systematic training.

The unit carries a 3-year full-machine warranty, verified by the serial number.

Yes. Voltage, plug, nameplate, manual language and packaging are customizable. A CE-LVD test report and RoHS reports are available; EDTA restrictions in the destination country must be checked for the F3B cleaner.