Installation, maintenance and repair of heating, ventilation, air conditioning equipment and appliances, boilers, water heaters, generators [ and security systems ] ; oil burner and boiler regulation and repair services; plumbing services; chimney cleaning and maintenance services

Fuel delivery services

Inspection, testing and onsite analysis services of [ home security systems, and ] home heating, ventilation and air conditioning equipment; inspection, testing, and onsite analysis services of building [ security systems and ] heating, ventilation and air conditioning equipment for commercial, industrial and institutional properties

[ Alarm response and monitoring services of security systems, fire alarms, medical alarms; Alarm response and monitoring services of environmental detection systems for use in detecting floods, temperature fluctuations, and carbon monoxide poisoning for protection of property and individuals ]