- Services
- Preventative Maintenance
Preventative Maintenance
Keep Your HVAC System Running at Its Best
Routine maintenance saves money, improves efficiency, and extends the life of your heating and cooling system.
Regular maintenance is the easiest way to prevent unexpected breakdowns, lower energy bills, and extend the life of your HVAC system. At Hollis Heating and Cooling, our preventative maintenance services are designed to catch issues early and keep your equipment in peak condition.
Whether it’s a yearly tune-up or seasonal check-ins, we’ll make sure your system runs safely, efficiently, and reliably — all year long.


Our Maintenance Checklist Includes:
- Cleaning coils and filters
- Inspecting electrical connections
- Checking refrigerant levels
- Testing thermostat operation
- Lubricating moving parts
- Verifying airflow and performance
Ideal For:
- Homeowners who want peace of mind
- Rental property managers
- Systems under warranty (many require routine service)
- Seasonal homeowners or properties with changing usage
Avoid costly repairs, improve air quality, and ensure your system is ready for whatever weather New England throws your way.
Our Services

Ready to Get Started
Contact DM Plumbing today for a free consultation. Let us help you with all your plumbing, heating, and remodeling needs.