Q: Why does the outdoor unit frost and defrost in winter? Is steam normal during defrosting?
A: Frost forms when extracting heat from cold humid air. Steam released during defrosting is normal, not equipment failure.
Q: How much maintenance does an air source heat pump require each year?
A: Annual maintenance includes cleaning filters and heat exchangers. Refrigerant service must be done by certified technicians. Do not add refrigerant by yourself.
Q: Unit low heating output, what should I check first?
A: Check filter clogging, water flow rate, air blockage on outdoor heat exchanger and antifreeze concentration. Contact local installer if these checks do not solve the problem.
Q: What is the expected service lifespan of Kolant heat pumps?
A: With regular professional maintenance, the whole unit can last 12–15 years. The compressor service life can reach 15+ years under proper working conditions.
Q: What warranty terms do you offer for heat pumps?
A: We provide full warranty for the whole unit and extended warranty for compressor. Warranty will be invalid if damage comes from unprofessional installation or unauthorized modification.
Q: Do you provide spare parts for overseas customers? How about lead-time of spare parts?
A: Yes, we supply genuine spare parts. Normal spare parts lead time is around 7–20 days based on items and destination port.
Q: How much can I save on heating bills compared with gas boiler / oil boiler / electric heating?
A: Heat pumps can cut heating cost by 40~70% in most regions. Actual saving depends on local electricity price, gas price and building insulation.
