Dometic EnviroComfort ECD16K-HV AC Retrofit Kit - 115V - 16,000 BTUEnviroComfort ECD16K HV AC Retrofit Kit 115V 16,000 BTU The Dometic Marine Air 16,000 BTU EnviroComfort Air Conditioning Retrofit Kit provides reverse cycle cooling and heating capability so you stay comfortable onboard year round. This 16,000 BTU unit replaces an older self contained air conditioner of comparable capacity in the 12,000 to 16,000 BTU range. All units have high velocity blowers with internal motors for a more compact installation