... installation easy 2.environmental protection 3.quiet 4.MOQ:1set All in one air source heat pump water heater1.installation easy 2. ... metal water heat exchanger, which resists the eerosion from chlorine in the water, creates a longer lifespan;2) Economical and high ... , compressor temperature, and evaporator temperature9) Color: White, steeless; Fashion all in one air source heat pump water heater